Gotowe bibliografie tematyczne / Slope

Gotowa bibliografia na temat „Slope”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 25 maja 2024

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Artykuły w czasopismach na temat "Slope"

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I. A. Ahmed, Abdalla, Ibrahim M. Eldoma, Elsadig ElMahdi A. H. Elaagip i Fujiang Hou. "Effects of Indigenous Cultivation Practices on Soil Conservation in the Hilly Semiarid Areas of Western Sudan". Water 12, nr 6 (29.05.2020): 1554. http://dx.doi.org/10.3390/w12061554.

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In dry regions, it is customary for farmers to use soil water conservation and/or water harvesting techniques. These practices have now become applicable to agriculturalists combating the adverse effects of drought on food production. In the semiarid areas of Zalingei in western Sudan, we quantified the soil erosion using traditional conservation measures, and conducted experiments in two consecutive rainy seasons (2013 and 2014). A split-split plot design was used to quantify the respective influences of each variable on reducing soil erosion: A) three gentle gradients (Slope1 (0.98%), Slope2 (1.81%), and Slope3 (3.1%)); B) two cropping systems (mono-crop and mixed-crops); and C) five indigenous conservation tillage practices—chisel ploughing (CHP), cross slope tied bonding (CSTB), contour ridge with stone bonds (CRSB), cross slope bonding (CSB), and zero tillage (ZT). Our results showed that there were significant differences between the slopes in season 2 (2014); the soil eroded at Slope3 was more than that of Slope1 and Slope2 by 71% and 27%, respectively. Over two seasons, there were no significant differences between the cropping systems. Conversely, the erosion level observed with CHP was higher than with the other practices. However, the CSTB and CSB erosion levels were only higher in season 2 when compared with those of CRSB and ZT. The study concluded that under the above conditions, the rate of soil erosion was severe and exceeded the erosion tolerance. Based on these results, in western Sudan, CRSB and ZT may be the more effective indigenous conservation practices for the protection of agricultural soils and productivity.
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Shen, Y., R. Lindenbergh, B. Hofland i R. Kramer. "CHANGE ANALYSIS OF LASER SCANS OF LABORATORY ROCK SLOPES SUBJECT TO WAVE ATTACK TESTING". ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences IV-2/W4 (13.09.2017): 139–47. http://dx.doi.org/10.5194/isprs-annals-iv-2-w4-139-2017.

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For better understanding how coastal structures with gentle slopes behave during high energy events, a wave attack experiment representing a storm of 3000 waves was performed in a flume facility. Two setups with different steepness of slope were compared under the same conditions. In order to quantify changes in the rock slopes after the wave attack, a terrestrial laser scanner was used to obtain 3D coordinates of the rock surface before and after each experiment. Next, through a series of processing steps, the point clouds were converted to a suitable 2D raster for change analysis. This allowed to estimate detailed and quantitative change information. The results indicate that the area around the artificial coast line, defined as the intersection between sloped surface and wave surface, is most strongly affected by wave attacks. As the distances from the sloped surface to the waves are shorter, changes for the mildly sloped surface, slope 1 (1 : 10), are distributed over a larger area compared to the changes for the more steeply sloped surface, slope 2 (1 : 5). The results of this experiment show that terrestrial laser scanning is an effective and feasible method for change analysis of rock slopes in a laboratory setting. Most striking results from a process point of view is that the transport direction of the rocks change between the two different slopes: from seaward transport for the steeper slope to landward transport for the milder slope.
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Friday, Sara. "Writing Slopes: Folding Slope". Physiotherapy 74, nr 7 (lipiec 1988): 346. http://dx.doi.org/10.1016/s0031-9406(10)63261-0.

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Burt, T. P. "Slopes and slope processes". Progress in Physical Geography: Earth and Environment 9, nr 4 (grudzień 1985): 582–99. http://dx.doi.org/10.1177/030913338500900405.

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Burt, T. P. "Slopes and slope processes". Progress in Physical Geography: Earth and Environment 10, nr 4 (grudzień 1986): 547–62. http://dx.doi.org/10.1177/030913338601000404.

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Burt, T. P. "Slopes and slope processes". Progress in Physical Geography: Earth and Environment 11, nr 4 (grudzień 1987): 598–611. http://dx.doi.org/10.1177/030913338701100408.

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Burt, T. P. "Slopes and slope processes". Progress in Physical Geography: Earth and Environment 12, nr 4 (grudzień 1988): 583–94. http://dx.doi.org/10.1177/030913338801200405.

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Allison, Robert J. "Slopes and slope processes". Progress in Physical Geography: Earth and Environment 14, nr 3 (wrzesień 1990): 373–87. http://dx.doi.org/10.1177/030913339001400305.

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Allison, Robert J. "Slopes and slope processes". Progress in Physical Geography: Earth and Environment 15, nr 4 (grudzień 1991): 423–37. http://dx.doi.org/10.1177/030913339101500405.

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Allison, Robert J. "Slopes and slope processes". Progress in Physical Geography: Earth and Environment 17, nr 1 (marzec 1993): 92–101. http://dx.doi.org/10.1177/030913339301700108.

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Rozprawy doktorskie na temat "Slope"

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Reeves, Bryan Anthony. "Slope stability radar /". [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17049.pdf.

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Larsson, Martin. "Road Slope Estimation". Thesis, Linköping University, Automatic Control, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-53884.

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Knowledge about the current road slope can improve several applications in a heavy-duty vehicle such as predictive cruise control and automated gearbox control. In this thesis the possibility of estimating the road slope based on signals from a vehicles air suspension system has been studied. More specifically, the measurement consists of a pressure signal measuring the axle load, and a vertical distance sensor.

A variety of suspension systems can be mounted on a Scania truck. During this thesis, two discrete-time models based on two different rear axle air suspension systems have been proposed. The models use the effect of alternating axle load during a change in the road slope and the estimates are computed using an extended Kalman filter.

The first model is based on a rear axle suspension known as the 2-bellow system. This type of suspension is strongly affected by the driveshaft torque, which results in a behaviour where the rear end is pushed upwards and thus decreasing the rear axle load during uphill driving. A model was developed in order to compensate for this behaviour. Unfortunately, the estimates showed less promising results and all attempts to determine the error was unsuccessful.

The latter model is based on the 4-bellow system. This suspension system is not affected by the driveshaft torque and a less complex model could be derived. The experimental results indicated that road slope estimation was possible and with a fairly accurate result. However, more work is needed since the estimate is affected by road surface irregularities and since the algorithm requires knowledge about the vehicles mass and the location of the centre of gravity.

All the presented results have been estimated based on real data from a test track at Scania Technical Centre in Södertälje.

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Firat, Seyhan. "Critical assessment of existing slope stability formulae and application to slope stabilisation". Thesis, University of South Wales, 1998. https://pure.southwales.ac.uk/en/studentthesis/critical-assessment-of-existing-slope-stability-formulae-and-application-to-slope-stabilisation(339ddd93-e0c1-466d-8278-143beca4fb20).html.

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In this research, extensive use has been made of limit equilibrium methods of analysis for studying the stability of slopes. For the determination of the factor of safety (FOS) of slopes, the usual two-step process has been adopted; (a) assuming a slip surface for the soil mass, and (b) using the appropriate limit equilibrium equation(s). Eight wellknown limit equilibrium methods have been programmed to calculate different FOS values. The comparative performance of the various analyses has been carried out successfully using case studies. The innovative use of Gauss quadrature to calculate the FOS values has been shown to reducet he iterative sequencesd ramatically with no loss of accuracy. A visco-plastic flow model has been proposed to estimate lateral forces on piles used for slope stabilisation. The present research data occupies an "in-between" position to the previously reported values, with the variation trend being confirmed satisfactorily in all cases. Slope stabilisation due to the presence of a row of piles has been investigated using two distinct lateral load estimations. These include theories of plastic deformation and the proposed visco-plastic flow which are modelled and implemented in a computer program. Eight well-known methods of slope stability analyses have been adopted and computer coded to re-calculate FOS values for a slope reinforced by a row of piles. A Finite Element computer program has been developed to evaluate the displacement, bending moment and shear force along the pile axis. The pile is analysed at two levels above and below the slip failure surface.
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Tsaparas, Ilias. "Field measurement and numerical modelling of infiltration and matric suctions within slopes". Thesis, Durham University, 2002. http://etheses.dur.ac.uk/1715/.

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Fitton, Timothy, i tfitton@hotmail com. "Tailings beach slope prediction". RMIT University. Civil, Environmental and Chemical Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080212.120813.

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Tailings (mining waste) disposal is a significant consideration for the mining industry, with the majority of the ore processed in most mining operations ending up as tailings. This creates large volumes of tailings, which must be handled and stored responsibly to avoid potential environmental catastrophes. The most common form of tailings storage facility is the impoundment, where tailings are contained within a basin, with beaches forming around the perimeter of the impoundment and a pond standing in the middle. A relatively new method of tailings storage is to create a 'stack', whereby the tailings solids form a large heap, with the discharge of tailings slurry from the apex of the heap. It is of significant value for mine operators and tailings engineers to be able to predict the shape of the beach that forms in either of these disposal scenarios. The key to being able to do this relies on a method of prediction of the beach slope. The aim of this work is to develop a method of tailings beach slope prediction for tailings slurries that are sub-aerially discharged from a pipe. In this thesis a literature review is undertaken, investigating existing methods for the prediction of tailings beach slopes. These methods are validated against relevant industrial and experimental data. Two separate phases of experimental work have taken place in an effort to investigate tailings deposition behaviour, one at mine sites and the other in a laboratory on a small scale. Three new tailings beach slope prediction models are presented; a simple empirical model enabling quick approximate predictions; an a priori tailings beach slope prediction model based on existing theories of open channel flow, sediment transport and rheology, which is more powerful due to the greater degree of theory in its foundation; and a new semi-empirical model that shares some of the theoretical aspects of the a priori model but offers better predictions due to its empirical calibration to the experimental data. The experimental results, along with 3 other independently collected sets of relevant industrial and experimental data, are used to validate the beach slope prediction models found in the literature, as well as the new beach slope models presented in this thesis. Statistical evaluation of the performance of all of these models is presented to enable comparison. Finally, a new beach shape model is presented for the three dimensional geometric forecasting of the beach surface of a tailings stack. Historic tailings discharge data is run through the beach shape model, and the shapes predicted by the model are compared with aerial survey data of a real tailings stack for validation of the shape model. This work not only presents a new method of tailings stack shape prediction, but also a plausible theory for explaining the concavity of tailings beaches. The stack shape model also has the potential to be developed further for the three dimensional modelling of tailings beaches formed in other types of storage facilities, such as impoundments or valleys.
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VanGilder, Joyce A. "Promenade Down the Slope". Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/10002.

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This project is an investigation into issues surrounding the placing of a building into the context of a sloped site. The study manifests itself through the design of a farmer's market, restaurant and retail space on a site defined by a change on volumetric disposition, movement pattern and structural system.
Master of Architecture
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Habgood, Edward Leslie. "Along-slope and down-slope sediment transport proceses in the Gulf of Cadiz". Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273808.

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Pedemonte, Aguilar Iván. "Evaluation of open pit slope deformation using novel numerical modeling software slope model". Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/159333.

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Magíster en Minería
A medida que las minas a cielo abierto crecen y se profundizan la estabilidad de sus taludes toma un papel importante y crítico, es por eso que la estimación previa del comportamiento de la roca en cada una de las etapas de la construcción de la mina es crucial para asegurar la estabilidad en el largo plazo. Una correcta estimación permite diseños más empinados, y una mejora en la ratio de remoción estéril/mineral, lo que debería reflejarse en el mejoramiento del VAN del proyecto. El objetivo de esta tesis es validar el nuevo software Slope Model, para el análisis de estabilidad de taludes, mediante la comparación de este con el software ya validado 3DEC. El fin del proyecto es mejorar el conocimiento respecto el comportamiento de macizos rocosos fracturados. En la actualidad existen diferentes programas de modelamiento numérico para la estimación del comportamiento de taludes mineros, los cuales van desde el método de equilibrio límite (LE) hasta enfoques matemáticos analíticos más complejos. La elección de usar un método u otro depende de varios factores como son el nivel de detalle que se le quiere dar a la zona a estudiar, las propiedades de las rocas y la cantidad de discontinuidades presentes. Los métodos utilizados más comunes son los continuos, discontinuos e híbridos. En el marco de los modelos discontinuos se observó que los softwares actuales no son capaces de reproducir la creación y propagación de nuevas fracturas mediante la rotura de roca intacta, hecho que si ocurre en la realidad. Por este motivo se eligió el nuevo software Slope Model (SM), de la empresa ITASCA, el cual sí reproduce dichos fenómenos, muy importantes para el estudio geotécnico del área analizada. Siendo SM un software en desarrollo, los resultados fueron comparados con un modelamiento usando el software 3DEC. En la presente tesis se llevó a cabo la representación simplificada de un talud de una mina ubicada en Chile. Utilizando los mismos parámetros de entrada, los resultados de SM representan correctamente los principales desplazamientos, habiendo diferencias en la magnitud de los valores. Los factores de seguridad obtenidos en SM son levemente menores que en 3DEC, lo que concuerda con la teoría ya que SM tiene la capacidad de representar la rotura de roca intacta y propagación de fracturas, resultando en una menor resistencia de la roca.
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Presbitero, Alan Ludovice, i n/a. "Soil Erosion Studies on Steep Slopes of Humid-Tropic Philippines". Griffith University. Australian School of Environmental Studies, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040906.151808.

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An in-situ water-induced soil erosion study of two years duration was conducted at a low slope of about 10%, and also on steep slopes of about 50%, 60% and 70% at the experimental site located at a soil and water research area contiguous to the Department of Agricultural Engineering and Applied Mathematics of the Visayas State College of Agriculture (ViSCA). ViSCA is located in the town of Baybay at the island of Leyte in humid tropical Philippines (latitude of 10 degrees 44' north and longitude of 124 degrees 48' east). The study has the following aims, namely: 1) to investigate the effect of local farming practices on soil erosion, particularly at steep slopes; 2) to study the hydrology and soil erosion processes in steep slope conditions in humid tropical climate; and 3) to apply and determine the limitations of a physical process-oriented sediment transport model for water-induced soil erosion model (Griffith University Erosion System Template, GUEST) to a very permeable soil under very high rainfall conditions. In the context of the steep slope experiments at ViSCA: a) across the slope planting of corn is equally effective in controlling soil loss as hedged farming alone or in combination with peanut intercrop; b) across the slope planting of corn in hedged runoff plots is as effective in controlling soil loss as when combined with peanut intercrop; c) farmer’s practice of planting a rowcrop like corn along the slope (providing ready-made downslope pathways for runoff water thus, encouraging flow-driven soil erosion) produces significant soil loss, often larger than from a bare runoff plot; d) hedgerows significantly reduced sediment concentration provided they remain intact; e) "failure" in hedgerows, often results in massive soil loss, being even greater than that in a comparable bare runoff plot. (Failure is manifested by runoff breaching the litter barrier at the base of the hedgerow in a localized position, leading to concentrated flow and extension of rills upslope from base of hedgerow) of hedged runoff plot (even though contour planted) and f) application of stubble in combination with across slope planting in hedged runoff plots (with or without a closely growing intercrop) provided both maximum surface cover (aerial and contact) and protection against soil loss in steep slopes. These conclusions are likely to apply to crops similar to corn, with an intercrop similar to peanut in morphology and root system. These conclusions might also be expected to apply to low slopes, though the effect of such protection might not be as pronounced as in steep slope runoff plots. Soil erosion mechanisms in steep slopes are dominated mainly by the runoff-driven processes of entrainment and re-entrainment. Average sediment concentration c and total soil loss M are shown to be functions of positive coefficient runoff related regressors and a parameter that measures rills formed and permanently imprinted on soil surface, and of negative coefficient regressors related to surface contact cover, at least for the steep slopes considered in this study. The relatively high streampower associated with overland flow on steep slopes suggests that overland flow dominates over rainfall impact as a source of soil sediment concentration. This was confirmed by the low value of the measured ratio of soil sediment concentration shed by net-rainfall detachment trays to that lost from the bare runoff plots. On the effect of surface contact cover on average sediment concentration c, the following findings were made, namely: a) surface contact cover of only about 20% to 30% is sufficient to reduce c to low levels, assuming the cover is well distributed; b) an "exponential-decay" form of relationship existed between surface contact cover and the average sediment concentration from the non-bare soil without normalizing with respect to sediment concentration from a reference bare soil runoff plot; and c) such nonlinear relationship is indicative of the dominating runoff processes of entrainment and re-entrainment compared to the linear form of relationships if rainfall –driven processes of detachment and re-detachment dominate. In runoff dominated soil erosion processes, surface contact cover (including both living and dead vegetative cover close enough to the soil surface to impede overland flow) is more significant in curtailing soil erosion than aerial surface cover. ...continued.
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Presbitero, Alan Ludovice. "Soil Erosion Studies on Steep Slopes of Humid-Tropic Philippines". Thesis, Griffith University, 2003. http://hdl.handle.net/10072/366622.

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An in-situ water-induced soil erosion study of two years duration was conducted at a low slope of about 10%, and also on steep slopes of about 50%, 60% and 70% at the experimental site located at a soil and water research area contiguous to the Department of Agricultural Engineering and Applied Mathematics of the Visayas State College of Agriculture (ViSCA). ViSCA is located in the town of Baybay at the island of Leyte in humid tropical Philippines (latitude of 10 degrees 44' north and longitude of 124 degrees 48' east). The study has the following aims, namely: 1) to investigate the effect of local farming practices on soil erosion, particularly at steep slopes; 2) to study the hydrology and soil erosion processes in steep slope conditions in humid tropical climate; and 3) to apply and determine the limitations of a physical process-oriented sediment transport model for water-induced soil erosion model (Griffith University Erosion System Template, GUEST) to a very permeable soil under very high rainfall conditions. In the context of the steep slope experiments at ViSCA: a) across the slope planting of corn is equally effective in controlling soil loss as hedged farming alone or in combination with peanut intercrop; b) across the slope planting of corn in hedged runoff plots is as effective in controlling soil loss as when combined with peanut intercrop; c) farmer’s practice of planting a rowcrop like corn along the slope (providing ready-made downslope pathways for runoff water thus, encouraging flow-driven soil erosion) produces significant soil loss, often larger than from a bare runoff plot; d) hedgerows significantly reduced sediment concentration provided they remain intact; e) "failure" in hedgerows, often results in massive soil loss, being even greater than that in a comparable bare runoff plot. (Failure is manifested by runoff breaching the litter barrier at the base of the hedgerow in a localized position, leading to concentrated flow and extension of rills upslope from base of hedgerow) of hedged runoff plot (even though contour planted) and f) application of stubble in combination with across slope planting in hedged runoff plots (with or without a closely growing intercrop) provided both maximum surface cover (aerial and contact) and protection against soil loss in steep slopes. These conclusions are likely to apply to crops similar to corn, with an intercrop similar to peanut in morphology and root system. These conclusions might also be expected to apply to low slopes, though the effect of such protection might not be as pronounced as in steep slope runoff plots. Soil erosion mechanisms in steep slopes are dominated mainly by the runoff-driven processes of entrainment and re-entrainment. Average sediment concentration c and total soil loss M are shown to be functions of positive coefficient runoff related regressors and a parameter that measures rills formed and permanently imprinted on soil surface, and of negative coefficient regressors related to surface contact cover, at least for the steep slopes considered in this study. The relatively high streampower associated with overland flow on steep slopes suggests that overland flow dominates over rainfall impact as a source of soil sediment concentration. This was confirmed by the low value of the measured ratio of soil sediment concentration shed by net-rainfall detachment trays to that lost from the bare runoff plots. On the effect of surface contact cover on average sediment concentration c, the following findings were made, namely: a) surface contact cover of only about 20% to 30% is sufficient to reduce c to low levels, assuming the cover is well distributed; b) an "exponential-decay" form of relationship existed between surface contact cover and the average sediment concentration from the non-bare soil without normalizing with respect to sediment concentration from a reference bare soil runoff plot; and c) such nonlinear relationship is indicative of the dominating runoff processes of entrainment and re-entrainment compared to the linear form of relationships if rainfall –driven processes of detachment and re-detachment dominate. In runoff dominated soil erosion processes, surface contact cover (including both living and dead vegetative cover close enough to the soil surface to impede overland flow) is more significant in curtailing soil erosion than aerial surface cover. ... [continued].
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Australian School of Environmental Studies
Faculty of Environmental Sciences
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Książki na temat "Slope"

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Kirk, Andy. Slope Graph. 1 Oliver’s Yard, 55 City Road, London EC1Y 1SP United Kingdom: SAGE Publications, Ltd., 2016. http://dx.doi.org/10.4135/9781529777147.

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Slope tectonics. London: Geological Society, 2011.

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Stevenson, Janet. The slope. Portland, Or: Privately printed for the Walk of the Heroines, 2009.

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Slope move. Atlanta, GA: Coconut Books, 2012.

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Stevenson, Janet. The slope. Portland, Or: Privately printed for the Walk of the Heroines, 2009.

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Yagi, Norio, Takuo Yamagami i Jing-Cai Jiang. Slope Stability Engineering. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203739600.

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Huang, Yu, Min Xiong i Liuyuan Zhao. Slope Stochastic Dynamics. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9697-8.

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Changwei, Yang, Zhang Jingyu, Lian Jing, Yu Wenying i Zhang Jianjing. Slope Earthquake Stability. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-2380-4.

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Wyllie, Duncan C. Rock Slope Engineering. Fifth edition. | Boca Raton : Taylor & Francis, CRC Press, 2017.: CRC Press, 2017. http://dx.doi.org/10.4324/9781315154039.

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Chowdhury, Robin. Geotechnical slope analysis. Boca Raton: CRC Press, 2010.

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Części książek na temat "Slope"

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Cheng, Jing, Ziyao He, Zhong Liu i Lei Zhang. "Slope Reliability Analysis Based on Nonlinear Stochastic Finite Element Method". W Advances in Frontier Research on Engineering Structures, 337–53. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8657-4_30.

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AbstractIn slope stability reliability analysis, the deterministic analysis method is usually used to calculate the safety factor to measure the stability of the slope, but the traditional deterministic analysis method cannot fully consider and describe the natural spatial variability of soil, which leads to the failure probability calculation of the slope is not accurate enough. Aiming at the problem of spatial variability of soil mechanical parameters in slope stability analysis, this paper proposes a stochastic finite element method for calculating the distribution of FS (factor of safety) of dam slopes, and MC (Monte Carlo) strength reduction combined method and MC direct method are proposed to calculate the reliability of slope. Taking isotropic two-dimensional slope as an example: firstly, the random field is sampled to get the corresponding random field of material properties, and then the slope displacement, stress and plasticity zone results are calculated; then on the basis of NMC times sampling of random field, there are: (i) Combined method (M1): the strength reduction method is used to get the reduction coefficient of each sample, and then its distribution, slope failure probability and reliability index are calculated; (ii) MC direct method (M2): using the viscop lastic method to solve and judge the instability of slopes, and the instability cases under all sample conditions are counted to obtain the failure probability and reliability index of slopes. The results show that the slope stability analysis considering the random field of material properties can obtain the real and reliable slope stability analysis results by comprehensively evaluating the slope safety through the mean value, variance, distribution and reliability index of the slope safety factor.
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Weik, Martin H. "slope". W Computer Science and Communications Dictionary, 1605. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_17606.

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Hirota, Kiyoharu, Yasuhisa Suganuma, Tomoharu Iwasaki i Takeshi Kuwano. "How to Teach Remotely the Vegetation Works to Protect Slopes Against Mass Wasting: A Case of Using Video Materials in Bhutan". W Progress in Landslide Research and Technology, Volume 1 Issue 2, 2022, 361–70. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-18471-0_26.

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AbstractThis paper describes the outline of the video tutorial prepared for vegetation workers and relevant officers in Bhutan to learn how vegetation works are to be done in remote areas. The Japan International Cooperation Agency (JICA for short) took a project on cutting unstable slopes in Gangthangkha, Wangdue, Bhutan, so that they should be gentler than 45° to improve slope stability with vegetation works. Particularly stabilizing slopes along Prime National Highway No. 1 (PNH-1 for short) was the overriding priority because slope failures along this highway have reportedly occurred in rainy seasons. Before vegetation works were carried out on the studied slope of the project, the authors conducted germination tests to choose seeds and methods suitable for the vegetation works. They chose Paspalum Atratum, Ruzi grass, and GM mixed (Grass Mixture seed formulating of Cock’s foot 70% and Italian Ryegrass 30% of 100 kg) based on their test results. The soil thickness associated with sowing was set at 5 cm. The authors tried the following types of vegetation methods on the studied site. Type A is arranging on the slope stripes of soil mixed with seeds and fertilizer, Type B is spreading out a five cm-thick seeds-mixed soil layer over the slope, and Type C is transplanting germination beds. In conclusion, Type C is the best in terms of its performance because the whole slope is quickly covered with already grown plants. In Type B, it is not until grass covers the entire slope that the slope is finally stabilized. Type A is good for seeds-mixed soil stripes, but it takes time for the grass to spread gradually over the whole slope.
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Lu, Xingya, Peng Li, Shengrui Su, Haibo Jiang i Fu Dong. "Optimization Design of Sand and Loess High Slope Based on Combination of Wide and Narrow Platfom——A Case Study of a High Slope in Yulin City". W Lecture Notes in Civil Engineering, 147–61. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2532-2_13.

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AbstractDue to the limited land resources available for engineering construction in Northern Shaanxi, engineering activities such as mineral resources development, basic engineering construction, slope reduction and building houses, and farming are often accompanied by the formation of a large number of Manually Excavated high slopes. Effective high slope design can reduce the waste of land resources, mitigate the damage to the natural environment, and reduce the project cost to a certain extent. Therefore, this paper takes a high sand loess slope in Yulin City, Shaanxi Province as an example, through field investigation, system theoretical analysis and numerical simulation calculation, comprehensively considering the anti scouring property, overall stability and excavation volume of the slope, the design scheme that meets the requirements and consumes the least capital is compared and selected, so as to obtain the optimal slope shape. The conclusion shows that the optimal single slope height of sand loess high slope in Northern Shaanxi is 7–8 m, and the slope ratio is 1:0.75. The setting of wide platform can change the stress distribution of high slope and weaken the continuity of effective plastic strain. The optimal slope shape of the high side slope includes the single slope of 8 m, the slope ratio of 1:0.75, the narrow platform of 3 m wide, 3 wide platforms are arranged, the location of ③④⑤, the width of 10 m, and the excavation volume of 696 m3 (per linear meter).
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Su, Yan, Lingjun Yang, Chuan Lin, Guolin Guo, Yanfeng Tang, Yangmin Lin, Xiudong Xie i Lidan Hong. "Study on Seepage Mechanism and Stability of Unsaturated Slope Based on Trefftz Method". W Lecture Notes in Civil Engineering, 555–64. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2532-2_47.

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AbstractThis paper proposes a space–time Trefftz method (STM) to study the seepage mechanism and stability of unsaturated slopes. The groundwater flow under transient conditions is important in engineering practice for solving practical problems such as assessing the stability of unsaturated soil slopes. Based on the transient groundwater equation, we derived the Trefftz basis functions by splitting the variables. The solutions are approximated using Trefftz basis functions in the space–time domain. The Stabl software is subsequently employed to analyze the stability of the slope under the rainfall recharge condition with the combined reservoir water level fall. The results demonstrate that the steeper the hydraulic slope drop under combined reservoir water level fall and rainfall infiltration, the more unstable the slope becomes.
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Arbanas, Željko, Josip Peranić, Vedran Jagodnik, Martina Vivoda Prodan i Nina Čeh. "Remedial Measures Impact on Slope Stability and Landslide Occurrence in Small-Scale Slope Physical Model in 1 g Conditions". W Progress in Landslide Research and Technology, 197–220. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-44296-4_9.

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AbstractPhysical modelling of landslides by analysing the behaviour of small-scale landslide models subjected to artificial rainfall can be divided into modelling under 1 g conditions and under increased acceleration (n times gravity) in a centrifuge. Physical modelling of landslide initiation began in 1970s in Japan on scaled natural slope models and after initial experiences with field and laboratory research, the small-scale landslide modelling has found a wide application around the world in different aspects of landslide investigations, analysing different types of landslides, different types of slope materials and landslide movements. The main task of landslide physical modelling is research of initiation, motion and accumulation of fast flow-like slides caused by infiltration of surface water or by shaking on a shaking table. Studies that have included landslide mitigation measures into small-scale physical models are rare and have not established correlations with a behaviour of on-site mitigation constructions. This paper discusses the behaviour of small-scale slope models supported by remedial measures under artificial rain in 1 g loading conditions. Models of slope built of different materials, with and without applied remedial measures (gravity retaining wall, gabion wall, pile wall) were exposed to identical intensities of artificial rainfall. The results of the simulations indicated that the slopes supported by remedial measures retained stability of the slope in the same conditions in which the sandy slope collapsed, as well as under significantly prolonged precipitations. At the end of the simulations, significantly higher rainfall intensities were applied to the supported slopes, exceeding the infiltration capacity of the slope material and affecting surface runout. The combination of surface erosion and saturation of superficial layer of a slope caused initiations of flow processes, while complete saturation of a slope when ground water level reached slope surface caused forming of a surface of rupture and consequently movements of the formed landslide body. The data obtained from the geodetic and geotechnical monitoring system enabled understanding of the overall process of rainfall infiltration and soil strength reduction to the development of the surface of rupture in a slope.
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Guo, Ying, Yating Du, Wei Shan i Chengcheng Zhang. "Numerical Analysis of the Effect of Rainfall on the Stability of Sandstone-Covered Mudstone Cutting Slopes". W Progress in Landslide Research and Technology, 285–95. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-44296-4_15.

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AbstractLandslides caused by rainfall are easily produced when excavating is made in sandstone-covered mudstone strata. The expansion project of the Heishan Village to the Jixi section of the Dan-A Highway is used as an example, this International Consortium on Landslides (ICL) 030 paper studies the formation and damage mechanism of rainfall-induced landslides in sandstone-covered mudstone cutting slopes. The finite element numerical method is used to analyze the stability of the slope for the three different rainfall-influencing factors of rainfall intensity, duration, and rainfall form. The study indicates that the increases in the rainfall time and its intensity will decrease the stability of the cutting slope, and that the effect of rainfall on the slope is lagging behind. When rainfall intensity is 80 mm, rainfall duration is 1 day, and stagnation is 5 h, the slope instability is in the critical state. The front slope toe is the first unstable part in the process of slope instability. Rock and artificial construction are important reasons for this phenomenon.
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Galloway, William E., i David K. Hobday. "Slope and Base-of-Slope Systems". W Terrigenous Clastic Depositional Systems, 186–230. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-61018-9_8.

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Høeg, Kaare. "Slope Stability". W Encyclopedia of Natural Hazards, 919–24. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-1-4020-4399-4_322.

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Hay, William W. "Continental Slope". W Encyclopedia of Marine Geosciences, 1–5. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-6644-0_156-3.

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Streszczenia konferencji na temat "Slope"

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Hassan, M. S. K., i V. H. Loo. "Effect of Slope Geometries on 3D Slope Stability under the Influence of Infiltration". W The HKIE Geotechnical Division 42nd Annual Seminar. AIJR Publisher, 2022. http://dx.doi.org/10.21467/proceedings.133.5.

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Rainfall-induced slope failure is the most common type of slope failure in Malaysia. Many studies have been carried out to assess the correlation of infiltration to 2D geometric features such as slope inclination. However, the relationship between infiltration and 3D slope geometric features has not yet been widely studied. The aim of this study is to assess the effect of varying slope geometries on slope stability with the influence of rainfall, and to compare the results of the 2D and 3D slope analysis. Seepage and slope stability analysis of homogenous slopes for normal, curved surface and turning corner slopes of varying angles were modelled using the numerical software PLAXIS LE. The 3D analysis demonstrated that multiple shallow failures spread across the sloped surface, which could not be captured by the 2D analysis. The failure modes are similar for the various geometric types of slopes. The results also indicate that the safety factor from the 3D analysis decreases more significantly with the rainfall duration as compared to the 2D analysis. This study changes the perception that a 2D analysis is more conservative than a 3D analysis, which is not always true.
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Trandafir, Aurelian C. "Seismic Coefficients for Simplified Deepwater Slope Stability Assessment Under Earthquake Loading". W Offshore Technology Conference. OTC, 2021. http://dx.doi.org/10.4043/31056-ms.

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Abstract Pseudostatic limit-equilibrium based slope stability analyses are carried out on a routine basis to evaluate stability of submarine slopes under earthquake loading. For slopes in deepwater settings, a major challenge in performing pseudostatic slope stability analyses is selection of an appropriate seismic coefficient. Most published displacement-based methodologies for seismic coefficient selection were developed using simplified sliding block models for seismic slope performance evaluation that are unable to capture the complex deformation mechanism of deepwater slopes during earthquakes. To address this challenge, this study employs two-dimensional dynamic finite-element based deformation analysis to investigate the earthquake response of submarine clay slopes characterized by morphology, stratigraphic architecture and geotechnical properties representative for the deepwater environment. Finite-element computed seismic slope performance indicators, including horizontal peak ground acceleration at the seafloor and earthquake-induced maximum shear strain within the slope, along with horizontal seismic coefficients required to trigger slope instability in limit-equilibrium based pseudostatic stability analyses are used to develop a rational shear strain-based correlation relationship for deepwater slope seismic coefficient selection.
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Bubel, Julian, Marc-André Pick i Jürgen Grabe. "Stability of Artificial Subaqueous Slopes in Sandy Soils Under Wave Loads". W ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41827.

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Shallow foundation structures in marine environments can rarely be placed on top of the sea floor. Weak soils usually need to be excavated to place the structure on more stable ground. Steep but stable slopes of the resulting pit meet both economic and ecologic aims as they minimise material movement and sediment disturbance. This paper focuses changes of geometry of submarine slopes in non-cohesive soils (erosion, sedimentation, breach failure, liquefaction failure) due to surface waves. After Terzaghi the angle between slope and the horizontal of the ground surface of cohesionless soil is at most equal to the critical state friction angle, as obviously true for dry soil. However, it can be observed that natural submarine slopes of sandy soils are always mildly sloped. During the construction of artificial submarine pits under offshore conditions it should be considered that the long-term slope-inclination is less than onshore due to hydrodynamic actions (e. g. flow, waves, earthquakes). Large surface waves cause excess pore water pressures within the soil body, leading to a reduction of effective stresses and in case of submarine slopes to changes of the slope geometry depending on wave length L, wave height H, water depth h and soil properties (permeability k, relative density Dr). During our preliminary work we investigated such processes based on the coupling of linear wave theory and linear quasistatic consolidation theory (e.g. [1]). With the help of numerical modelling we solved corresponding equations considering also materially nonlinear consolidation. However, deformations were always limited by used Lagrangian-FEM. Recent developments at our Institute enable the use of an Eulerian-FEM approach with an u-p-Formulation for fully saturated soil [2]. This allows larger deformations of the subaqueous slope to be numerically investigated.
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Zhang, Junyun. "Shallow Slope Stability Analysis Method for Vegetated Slope". W Second International Conference on Geotechnical and Earthquake Engineering. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784413128.046.

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Mendes, Saulo, i Jérôme Kasparian. "Slope Effect on the Evolution of Kurtosis Over a Shoal". W ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-107884.

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Abstract Shoaling surface gravity waves induce rogue wave formation, but are reduced to water waves passing over a step. We show that non-equilibrium physics allows finite slopes to be considered in this problem. A spatially varying energy density describes the dependence of the rogue wave amplification as a function of the slope steepness. Increasing the slope increases the amplification of rogue wave probability, until this amplification saturates at steep slopes. In contrast, the increase of the down slope of a subsequent de-shoal zone leads to a monotonic decrease in the rogue wave probability. In view of the central role played by the excess kurtosis in estimating rare event probabilities, we find an effective theory for the excess kurtosis evolving over a shoal.
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Adzim, Abdul, i Hafizzi Abdullah. "Finite Element Modelling for Refined Assessment of Subsea Slope Stability". W Offshore Technology Conference Asia. OTC, 2024. http://dx.doi.org/10.4043/34854-ms.

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Abstract This paper presents work undertaken at the project front-end stage of reducing to ALARP the risk of subsea flowline rupture from impact of debris flow upon collapse of a slope due to a seismic event. The scope involved soil sample testing, novel finite-element analysis techniques and development of site-specific probabilistic seismic hazard assessment (PSHA). The subsea flowline traverses a route which has steep local slopes in close vicinity. Preliminary seismic slope stability assessment indicated the slopes have marginal factors of safety and would fail during a seismic event, causing mass gravity flow. Seabed topography will channel the mass gravity flow to impact the flowline. Landslide runout modelling of the slope failure quantified the mass gravity flow impact forces onto the flowline, and subsequent calculation demonstrated the flowline would instantaneously rupture under these impact forces. Finite-element modelling was used to refine the preliminary slope stability assessment, to remove the conservatism assumed in initial work and obtain a more representative actual stability of the slope. ABAQUS software was used to build a model of the slope. Site specific geotechnical input parameters were required for the model. As such, a suite of specialized tests on borehole samples were performed to generate these parameters and used in the model. A site response dynamic analysis was run using a purpose-built non-linear program to analyze the response of the slope under seismic acceleration forces. Initial input motions for the dynamic analysis were derived from the PSHA of an adjacent site. Concurrent work was performed to develop site-specific PSHA for later comparison. The dynamic slope stability demonstrated that the slope remains stable under the most onerous motions of a 4000-year return period Abnormal Level Earthquake (ALE), with significant margin. Additional analyses were performed to assess the severity of an event that might be required to cause slope failures by factoring the acceleration time histories by factors of up to 3.6. The slopes still remained stable throughout the intensified accelerations. The site-specific PSHA acceleration time histories were compared to those used in the analysis. It was found that input motions used in the analysis exceeded the site-specific 10,000-year return period seismic event motions, and in the case of the analysis using the factor of 3.6, by a very large margin. This provided project confidence that the steep slopes within the vicinity of the flowline are indeed stable under a seismic event. The flowline is demonstrated to be free from the threat of a mass gravity flow impact.
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Gray, D. H. "Influence of Slope Morphology on the Stability of Earthen Slopes". W Geo-Congress 2013. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784412787.191.

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Zhang, Yanxiang, Jialing Wu i Qingqin Liu. "The Sloped Shoes: Influence Human Perception of the Virtual Slope". W 2022 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW). IEEE, 2022. http://dx.doi.org/10.1109/vrw55335.2022.00264.

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Zhang, Zhaopeng, Jingshan Bo i Feng Qiao. "The Influence of Slope Shape on Slope Seismic Stability". W 2018 2nd International Conference on Applied Mathematics, Modelling and Statistics Application (AMMSA 2018). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/ammsa-18.2018.62.

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Shajitha, A. U., i K. Niranjana. "Slope Stability Analysis and Slope Stability Improvement by Plaxis". W International Conference on Emerging Trends in Engineering & Technology (ICETET-2015). Singapore: Research Publishing Services, 2015. http://dx.doi.org/10.3850/978-981-09-5346-1_ce-517.

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Raporty organizacyjne na temat "Slope"

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Couture, R., i W. Sladen. Slope movement monitoring. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2013. http://dx.doi.org/10.4095/293170.

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Jones, Marshall B. Slope-Controlled Performance Testing. Fort Belvoir, VA: Defense Technical Information Center, lipiec 1989. http://dx.doi.org/10.21236/ada211041.

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Roos, R. North Slope investigation report. Office of Scientific and Technical Information (OSTI), kwiecień 1990. http://dx.doi.org/10.2172/7138522.

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Rohr, K. M. M., M. Riedel, S. R. Dallimore i M. M. Côté. Slope-fan and glacial sedimentation on the central Beaufort continental slope, Arctic Canada. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/326068.

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Gavillot, Yann G. Landslide inventory and slope map of Jefferson County, southwest Montana. Montana Bureau of Mines and Geology, listopad 2022. http://dx.doi.org/10.59691/djry7545.

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This landslide inventory and slope map identifies new and existing landslides that demonstrate evidence of gravity-driven slope movement based on lidar data, geomorphic and topographic analyses, field checks, and, when available, published geological maps.
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Dinovitzer, Aaron. PR-214-154503-R01 Pipeline Strains Induced by Slope Movement. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), sierpień 2019. http://dx.doi.org/10.55274/r0011609.

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Pipeline integrity may be affected by the action of the external soil loads that can be generated by ground movements or slope failures and the structural integrity threat of these geotechnical failures is not well understood. The threat presented to a pipeline by a localized slope failure is not directly related to magnitude of the soil movement involved, but related to the stress and strains induced in the pipeline by the moving soil block. This project demonstrated and applied advanced pipe-soil interaction numerical modeling tools in the assessment of slope movements directed long the pipeline axis. The geotechnical hazard assessments completed in this project provide a conservative means of estimating the pipeline axial strain accumulation resulting from slope movements. These modeling results are presented such that an understanding of the influence of pipeline, slope and operational parameters on strain accumulation is demonstrated and the relative importance of each parameter is demonstrated. The relationship between surface expression of a geotechnical event and the subsurface parameters to facilitate conservative characterization of the event is defined. The data describing axial strain as a function of ground movement magnitude presented in this project may be compared to the axial strain capacity (resistance) engineering tools to evaluate the significance of slope movements on pipeline integrity.
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Willingham, A. L., i T. M. Herriott. Photogrammetry-derived digital surface model and orthoimagery of Slope Mountain, North Slope, Alaska, June 2018. Alaska Division of Geological & Geophysical Surveys, luty 2020. http://dx.doi.org/10.14509/30419.

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Helsel, Frederick M., Darielle Dexheimer i Daniel A. Lucero. North Slope of Alaska ARM Facilities. Office of Scientific and Technical Information (OSTI), październik 2016. http://dx.doi.org/10.2172/1431186.

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Piper, D. J. W., i R. Sparkes. Pliocene - Quaternary Geology Central Scotian Slope. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/130866.

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Pratson, Lincoln F. Modeling of Selected Continental Slope Processes. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 1999. http://dx.doi.org/10.21236/ada630380.

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