Gotowe bibliografie tematyczne / Slopes

Gotowa bibliografia na temat „Slopes”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 2 marca 2023

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Artykuły w czasopismach na temat "Slopes"

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Xu, Zaixian, Chao Li, Fang Fang i Fufei Wu. "Study on the Stability of Soil–Rock Mixture Slopes Based on the Material Point Strength Reduction Method". Applied Sciences 12, nr 22 (15.11.2022): 11595. http://dx.doi.org/10.3390/app122211595.

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In this paper, the material point strength reduction method is used to investigate the stability of soil–rock mixture (SRM) slopes and the whole process of large deformation occurring after destabilization. A comparative study with homogeneous soil slopes is conducted. First, a material point slope model with typical shapes, a homogeneous soil slope, and an SRM slope with stones of different sizes distributed inside is established. Next, gravity is linearly added to establish the initial state of the slopes. Then the material strength of the slope is discounted according to the criterion of strength discounting. The material point method (MPM) simulations of the two slopes are carried out separately until the slope’s displacement changes abruptly to determine the slope’s safety factor. The final accumulation form of the slope after the damage is studied. Finally, the deformation characteristics of the two slopes under extreme conditions are explored. The research shows that the stones are beneficial to the slope in maintaining slope stability, and due to the presence of stones, the slope presents different characteristics from the pure soil slope when damage occurs.
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Soehady Erfen, Hennie Fitria Wulandary, i Amirul Adlie bin Mohd Rosli. "SLOPE STABILITY ASSESSMENT USING MODIFIED D-SLOPE METHOD OF WESTERN PART OF SANDAKAN, SABAH". Geological Behavior 4, nr 1 (4.03.2020): 13–17. http://dx.doi.org/10.26480/gbr.01.2020.13.17.

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Slope stability assessment using modified D-Slope method is been conducted on five (5) rock slopes from Sandakan, Sabah. D-slope method comprises of G-Rating determination and Potential Instability. G-Rating includes 17 parameters of field observation and laboratory analysis to assess the slope condition. Kinematic analysis is used for Potential Instability analysis to determine the type of failures for each slope. This later is to determine the level of slope’s risk: No Risk, Low Risk, Moderate Risk or High Risk. Based on the results of G-Rating, only slope C1 and C2 have value more than 0.4 while other slopes have less than 0.4 which indicates stable slopes. Based on kinematic analysis, slope C1 and C3 experienced wedge failures, slope C4 with toppling failure, slope C5 with wedge/planar failures and no failure shown for slope C2. D-slope analysis indicates that slope C1 is considered as Low Risk with mitigation suggestions of stream system inspection and vegetation on exposed area of the slopes, while other slopes (C2, C3, C4 and C5) have no suggestion for mitigation as been assessed as No Risk.
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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 "Slopes"

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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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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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Ross, Andrew Neil. "Gravity currents on slopes". Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621127.

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Stevens, W. Richard(William Richard). "Pore water pressure in rock slopes and rockfill slopes subject to dynamic loading". Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/191872.

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A simplified method for simulating the response of rockfill and rock slopes subject to a dynamic load is presented. A pore pressure analysis is incorporated into a dynamic slope stability computer program, the Linear Acceleration Dynamic Response of Slopes -- Multiple Degrees of Freedom (LADRS-MDF), developed by Dr. C.E. Glass of the University of Arizona. LADRS-MDF is based on Barton's empirical shear strength criteria and uses the entire acceleration time history. The dynamic water pressure analysis depends on the slope conditions. Only the transient water pressure is present in material where the excess pore pressure dissipation exceeds the excess pore pressure generation. When excess pore pressure generation is greater than the dissipation, a water pressure buildup is present along with the transient pore water pressure.
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Bernardi, Lorenzo. "Centrifuge Modeling of Sandy Slopes". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amslaurea.unibo.it/125/.

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Slope failure occurs in many areas throughout the world and it becomes an important problem when it interferes with human activity, in which disasters provoke loss of life and property damage. In this research we investigate the slope failure through the centrifuge modeling, where a reduced-scale model, N times smaller than the full-scale (prototype), is used whereas the acceleration is increased by N times (compared with the gravity acceleration) to preserve the stress and the strain behavior. The aims of this research “Centrifuge modeling of sandy slopes” are in extreme synthesis: 1) test the reliability of the centrifuge modeling as a tool to investigate the behavior of a sandy slope failure; 2) understand how the failure mechanism is affected by changing the slope angle and obtain useful information for the design. In order to achieve this scope we arranged the work as follows: Chapter one: centrifuge modeling of slope failure. In this chapter we provide a general view about the context in which we are working on. Basically we explain what is a slope failure, how it happens and which are the tools available to investigate this phenomenon. Afterwards we introduce the technology used to study this topic, that is the geotechnical centrifuge. Chapter two: testing apparatus. In the first section of this chapter we describe all the procedures and facilities used to perform a test in the centrifuge. Then we explain the characteristics of the soil (Nevada sand), like the dry unit weight, water content, relative density, and its strength parameters (c,φ), which have been calculated in laboratory through the triaxial test. Chapter three: centrifuge tests. In this part of the document are presented all the results from the tests done in centrifuge. When we talk about results we refer to the acceleration at failure for each model tested and its failure surface. In our case study we tested models with the same soil and geometric characteristics but different angles. The angles tested in this research were: 60°, 75° and 90°. Chapter four: slope stability analysis. We introduce the features and the concept of the software: ReSSA (2.0). This software allows us to calculate the theoretical failure surfaces of the prototypes. Then we show in this section the comparisons between the experimental failure surfaces of the prototype, traced in the laboratory, and the one calculated by the software. Chapter five: conclusion. The conclusion of the research presents the results obtained in relation to the two main aims, mentioned above.
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Chan, Peter D. S. "Soil-pipeline interaction in slopes". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0019/MQ49672.pdf.

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Nicolaou, Maria. "Gait adaptations to transverse slopes". Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32931.

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The purpose of the study was to identify the lower limb kinematic adaptations made in normal gait to accommodate to static transverse slopes. Five male subjects were asked to walk along a platform at 0%, 5% and 10% slope. Kinematic data for the ankle, knee and hip were collected at 60Hz using the Ultratrak RTM (Polhemus Inc., Burlington, VT, USA) electromagnetic tracking system. Results indicated that significant (p < 0.05) joint angle changes occurred in both the uphill (UH) and downhill (DH) lower limbs. The adaptations served as compensatory changes to functionally shorten the UH limb and lengthen the DH limb.
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Kilford, Lloyd James Peter. "Slopes of overconvergent modular forms". Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397650.

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Jacobs, Daniel. "Slopes of compact Hecke operators". Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397675.

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Książki na temat "Slopes"

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Slopes. London: Wayland, 2009.

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Rush, Caroline. Slopes. Austin, Tex: Raintree Steck-Vaughn, 1997.

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Bromhead, E. N. The stability of slopes. Glasgow: Surrey University Press, 1986.

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The stability of slopes. Wyd. 2. London: Blackie Academic & Professional, 1992.

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Dunn, Andrew. Simple slopes. New York: Thomson Learning, 1993.

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Alexander, Tania. Undiscovered slopes. London: Macdonald / Queen Anne, 1989.

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Conlin, B. H. Tailings beach slopes. S.l: s.n, 1989.

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Wietek, Bernhard. Slopes and Excavations. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-35853-2.

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Vogel, Burkhard. Slopes and Levels. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99443-3.

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Copyright Paperback Collection (Library of Congress), red. Hitting the slopes. New York: Golden Books Pub. Co., 1999.

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Części książek na temat "Slopes"

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Hargitai, Henrik. "Slopes". W Encyclopedia of Planetary Landforms, 1–6. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9213-9_560-1.

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Wittke, Walter. "Slopes". W Rock Mechanics, 567–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-88109-1_15.

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Wietek, Bernhard. "Slopes". W Slopes and Excavations, 7–62. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-35853-2_2.

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Hargitai, Henrik. "Slopes". W Encyclopedia of Planetary Landforms, 1987–91. New York, NY: Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4614-3134-3_560.

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Howard, Alan D., i Michael J. Selby. "Rock Slopes". W Geomorphology of Desert Environments, 123–72. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-015-8254-4_7.

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Young, Robert, i Ann Young. "Curved Slopes". W Springer Series in Physical Environment, 39–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-76588-9_3.

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Salgado, Rodrigo. "Soil slopes". W The Engineering of Foundations, Slopes and Retaining Structures, 885–933. Wyd. 2. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/b22079-17.

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Howard, Alan D., i Michael J. Selby. "Rock Slopes". W Geomorphology of Desert Environments, 189–232. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-5719-9_8.

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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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Goldberg, Paul, i Richard I. Macphail. "Hydrological systems I: Slopes and Slope Deposits". W Practical and Theoretical Geoarchaeology, 72–84. Malden, MA USA: Blackwell Publishing Ltd., 2013. http://dx.doi.org/10.1002/9781118688182.ch4.

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Streszczenia konferencji na temat "Slopes"

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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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Bubel, Julian, Christina Rudolph i Ju¨rgen Grabe. "Stability of Temporary Submarine Slopes". W ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-50157.

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Shallow foundation structures for offshore wind turbines offer ecological benefits compared to pile foundations as less noise is emitted at sea floor level during construction process. On the other hand, shallow offshore foundations can rarely be placed on top of the sea floor. Weak soils usually need to be excavated to place the foundation structure on more stable ground and thus, anthropogenic submarine slopes result. Steep but stable slopes meet both economic and ecologic aims as they minimise material movement and sediment disturbance. After Terzaghi [1] the angle β between slope and the horizontal of the ground surface of coarse-grained soil is at most equal to the critical state friction angle φc. However, it can be observed that natural submarine slopes of sandy soils are always much more shallow. Particularly fine-grained, cohesionless or almost cohesionless soils failed in the past, although the slope angle was much smaller than the critical state friction angle φc. Artificial (temporary) slopes do not appear and behave as natural submarine slopes, since the latter are already shaped by perpetual loads of waves, tide and mass movements. Physical simulations of different scales are used to analyse the stability of artificial submarine slopes with sandy soil of the North Sea. The study focuses on gravitational forces and impacts from the excavation processes. The simulations and theoretical considerations result in suggested slope angles for future shallow offshore foundations of wind farms in the North Sea.
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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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Joo, Jungseock, i Kimmo Kärkkäinen. "Gender Slopes". W MM '20: The 28th ACM International Conference on Multimedia. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3422841.3423533.

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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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Barlow, J. Peter. "Influence of Gradually Moving Slopes on Pipelines". W 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27348.

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The river valleys in the plains of Western Canada and the Northwestern United States are relatively young in a geological time scale and often have extensive landslide activity on the valley slopes. Depending on the geology, these landslides can have very low movement rates and show little or no visible signs of slope movement, but still be relevant for the integrity of pipelines. Pipelines installed in gradually moving landslide terrain are subject to some risk of damage, depending on the details of the installation and the level of activity of the slide. Directionally drilled pipeline installations can be particularly vulnerable to this type of slope movement relative to long term integrity. A number of case histories are reviewed that involved pipeline installations on slopes that were moving at slow but persistent rates. Measures were successfully implemented at several of the slopes to lower the risk to the pipelines. Many of these cases involved relatively low cost drainage measures that significantly reduced the risk of pipeline damage.
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"Sustainable Constructed Slopes". W 2014 ASABE Annual International Meeting. American Society of Agricultural and Biological Engineers, 2014. http://dx.doi.org/10.13031/aim.20141896553.

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Hatton, Ross L., i Howie Choset. "Sidewinding on slopes". W 2010 IEEE International Conference on Robotics and Automation (ICRA 2010). IEEE, 2010. http://dx.doi.org/10.1109/robot.2010.5509875.

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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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Chen, Hongzhou, Guohai Dong i Yuxiang Ma. "Parameterization for Nonlinearity of Random Waves Over Slopes". W ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10232.

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Nonlinearity of gravity waves in coastal region plays crucial role in the wave evolution and the sediment transport. Parameterization of the nonlinear characteristics of random waves is an efficient and important way to descript the wave process. It is well known that coastal topography has a key effect on the wave transformation. However, the related previous studies have ignored the slope effects. It is the primary motivation of the research. To implement this aim, physical experiments of random waves propagating over three slopes (1/15, 1/30, 1/45) were carried out in a wave flume with 50m long, 3m wide and used with a water depth of 0.52m. About 20 random wave simulations based on JONSWAP spectra with varying wave height and peak frequency were considered. The wavelet based bispectrum is adopted to obtain the nonlinear parameters, bicoherence, biphase, skewness and asymmetry. On each slope bottoms, several empirical relationships between these parameters and the local Ursell number are derived using the least square method. The results indicate that the bicoherence and the asymmetry of waves relate to the slope. However, the slopes have negligible effect on the formulae of the skewness. Then, the empirical formulae on the bicoherence and asymmetry combining with the bottom slope are constructed.
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Raporty organizacyjne na temat "Slopes"

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Struik, L. C. Living with slopes. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2015. http://dx.doi.org/10.4095/295686.

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Hogg, Nelson G. Topographic Waves on Slopes. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2003. http://dx.doi.org/10.21236/ada628713.

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Hogg, Nelson. Topographic Waves on Slopes. Fort Belvoir, VA: Defense Technical Information Center, sierpień 2002. http://dx.doi.org/10.21236/ada626443.

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De Moustier, Christian. Mapping Bathymetric Slopes from Bathymetry Data. Fort Belvoir, VA: Defense Technical Information Center, maj 1993. http://dx.doi.org/10.21236/ada265923.

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LÜFTENEGGER, Roland, Roman MARTE, Florian SCHARINGER i Helmut SCHWEIGER. Arching effect for building pits in slopes. Cogeo@oeaw-giscience, wrzesień 2011. http://dx.doi.org/10.5242/iamg.2011.0146.

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Hughes, Steven A. Estimating Irregular Wave Runup on Rough, Impermeable Slopes. Fort Belvoir, VA: Defense Technical Information Center, lipiec 2005. http://dx.doi.org/10.21236/ada437084.

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Nowell, Arthur R., Robert A. Wheatcroft i Richard W. Sternberg. Sediment Transport Events on Slopes and Shelves (STRESS). Fort Belvoir, VA: Defense Technical Information Center, lipiec 1992. http://dx.doi.org/10.21236/ada252951.

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Fan, Jen-Chen. Prediction of Erosion on Cut or Fill Slopes. West Lafayette, IN: Purdue University, 1988. http://dx.doi.org/10.5703/1288284314141.

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Dyke, L. D. Stability of permafrost slopes in the Mackenzie valley. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2000. http://dx.doi.org/10.4095/211928.

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Danforth, Lawrence W. Down the Slippery, Snowy Slopes of Colombia We Go. Fort Belvoir, VA: Defense Technical Information Center, styczeń 2003. http://dx.doi.org/10.21236/ada442513.

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