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Journal articles on the topic 'Rock mass evaluation'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Xie, Mowen, Weinan Liu, Yan Du, Qingbo Li, and Hongfei Wang. "The Evaluation Method of Rock Mass Stability Based on Natural Frequency." Advances in Civil Engineering 2021 (April 24, 2021): 1–9. http://dx.doi.org/10.1155/2021/6652960.

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The limit equilibrium method’s analysis index cannot be measured by on-site monitoring equipment and cannot be used for monitoring and early warning of rock instability. The existing rock stability evaluation methods based on vibration information cannot evaluate the stability of rocks quantitatively. In this paper, the slope’s constraints on the rock were simplified to springs and a three-dimensional analysis model of rock vibration was established. The equation for calculating the natural frequency of rock that includes the spring stiffness as an indicator was derived. The rock stability cal

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2

Wu, Shuliang, Xidong Du, and Shan Yang. "Rock Mass Quality Evaluation Based on Unascertained Measure and Intuitionistic Fuzzy Sets." Complexity 2020 (April 27, 2020): 1–14. http://dx.doi.org/10.1155/2020/5614581.

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Evaluation of rock mass quality is of great significance to the design and construction of geotechnical engineering. In order to evaluate the quality of engineering rock mass scientifically and deal with the fuzzy information in the rock mass quality evaluation reasonably, a model for evaluation of rock mass quality based on unascertained measure and intuitionistic fuzzy sets (UM-IFS) was proposed. First, the membership of rock mass quality evaluation index was determined by the single index measure function of unascertained measure (UM) theory. Based on the intuitionistic fuzzy sets (IFS) the

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3

Nikolai, Abramkin. "Empirical techniques for assessing rock mass condition." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal, no. 2 (April 20, 2022): 68–76. http://dx.doi.org/10.21440/0536-1028-2022-2-68-76.

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The relevance of the work is due to the existence of a large number of empirical methods for predicting the condition of a rock mass and the need to apply them at the design and operational stage of mining enterprises to minimize costs during construction and future maintenance. Research objective is to analyze and compare existing empirical methods for determining the strength and deformation properties of rock mass. Methods of research include the analysis, systematization and synthesis of existing empirical methods of rock mass condition assessment and their applicability to real-world site

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Khurshid, Muhammad Nasir, Ammad Hassan Khan, Zia ur Rehman, and Tahir Sultan Chaudhary. "The Evaluation of Rock Mass Characteristics against Seepage for Sustainable Infrastructure Development." Sustainability 14, no. 16 (2022): 10109. http://dx.doi.org/10.3390/su141610109.

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The determination of rock seepage characteristics is a complex phenomenon due to the variability, discontinuities, and formation age of rocks. The available literature on rock mechanics covers empirical relationships and approaches for the estimation of seepage characteristics from the rock mass parameters. In this study, an area comprising of infrastructure such as a water reservoir, embankments, roads, etc., constructed on mix rock mass formations was selected. The field and laboratory tests’ geo-mechanical data for the study area were evaluated. The data obtained from the field geo-mechanic

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Mohammed, Fahmy, Ghafor Hamasur, and Diary Al-Manimi. "Evaluation of Carbonate and Heterogenous Rock Masses for the Dam Foundation: A Case Study at Kanarwe River Basin, Sulaimaniyah, NE Iraq." Iraqi Geological Journal 56, no. 1F (2023): 155–83. http://dx.doi.org/10.46717/igj.56.1f.11ms-2023-6-19.

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Evaluating rock masses for dam foundations, especially heterogeneous rock (flysch), becomes imperative and requires accurate geomechanical classifications. The rocks at the Kanarwe river basin, especially at a proposed dam site (Goma-Qazan near Khewata, Sura Qalat villages), mainly consist of interlaying massive carbonate rocks of the Aqra Formation with flysch rocks of Tanjero Formation. Therefore, selecting appropriate dam types is challenging and very risky. This study conducted a detailed study of lithology, discontinuity condition, rock sampling and laboratory tests to determine the site

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Ismanda, Yayi, I. Gde Budi Indrawan, and Heru Hendrayana. "Evaluation of Engineering Geological Conditions for Slope Stability Analysis of Diversion Tunnel Portal of Jlantah Dam, Karanganyar, Central Java." Journal of Applied Geology 8, no. 1 (2023): 9. http://dx.doi.org/10.22146/jag.72438.

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This paper presents the research results carried out to analyze the slope stability of the diversion tunnel portal of Jlantah Dam based on the quality of the rock mass. The classification of the rock mass quality at the tunnel location refers to the Geological Strength Index (GSI) method while the analysis of portal slope stability is modelled numerically with the element method using Phase2 software. The modelling of the tunnel portal slope design with and without earthquake load was carried out to obtain the safety factor (SF) value. The results showed that the study area consists of residua

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7

Diwani, J. P., and G. I. Marliyani. "Empirical Method for Engineering Geological Evaluation of Pelosika Dam Diversion Tunnel Design, Southeast Sulawesi, Indonesia." IOP Conference Series: Earth and Environmental Science 1233, no. 1 (2023): 012007. http://dx.doi.org/10.1088/1755-1315/1233/1/012007.

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Abstract This paper explains a Pelosika Dam Diversion Tunnel in metamorphic rocks (quartz muscovite phyllite) and aims to find out excavation methods, stand-up time, and support systems for tunnel construction. The purpose of this research is that the development of science in tunnel construction with the characteristic of metamorphic rock will increase. Tunnel location in poort rock mass quality based on previous geology investigations. Based on current geology and engineering geological mapping results, diversion tunnel through poor rock mass of metamorphic rocks (phyllite) which have slight

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8

Liu, Wen-lian, Jia-xing Dong, Han-hua Xu, Su-gang Sui, Run-xue Yang, and Lun-shun Zhou. "Trajectory Analysis and Risk Evaluation of Dangerous Rock Mass Instability of an Overhang Slope, Southwest of China." Advances in Civil Engineering 2021 (June 24, 2021): 1–15. http://dx.doi.org/10.1155/2021/7153535.

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Analysis of the movement trajectory and risk assessment of the high-slope dangerous rock mass collapse are of great significance for preventing and controlling the geological disasters of collapse. This study firstly takes the dangerous rock mass of the high slope in Pu’erdu Town, Yanjin County, Zhaotong City, Yunnan Province, as the research object, calculates and analyzes the trajectory of collapse movement of several groups of dangerous rock mass with great threat, and RocFall are used to carry out numerical simulation analysis and verification. Secondly, the risk and vulnerability of the d

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9

Krisdianto, Panji, Hendy Setiawan, and Wawan Budianta. "Evaluation of post-excavation engineering geological condition at the diversion tunnel of Tiga Dihaji Dam Construction, South Sumatera, Indonesia." Journal of Physics: Conference Series 2945, no. 1 (2025): 012010. https://doi.org/10.1088/1742-6596/2945/1/012010.

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Abstract The diversion tunnel at Tiga Dihaji Dam used underground tunneling construction with a diameter of 7 meters and a tunnel length of 595 meters. The diversion tunnel was already excavated, and the support systems were installed. The underground condition of the tunnel depends on the rock mass characteristics. Hence, the engineering geological conditions must be evaluated after the excavation process. Five aspects were evaluated: geomorphology, lithology, geological structure, groundwater level, and rock mass quality. Two methods were used to evaluate all of the five aspects: geological

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10

Gart, Ibrahim, Ghafor Hamasur, and Mohammed Abood. "Assessment of Foundation Rocks of the Proposed Makhol Dam in the Northern Salah- Alddin, Iraq." Iraqi Geological Journal 56, no. 1F (2023): 135–54. http://dx.doi.org/10.46717/igj.56.1f.10ms-2023-6-18.

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This study was done as an assessment of the foundation rocks of the proposed Makhol dam in the northern Salah- Aiddin Governorate, Iraq. This study consists of field, laboratory, and office work. It was noticed in the field that the thirteen (13) different rock mass units comprised along the dam axis. Three rock mass classification systems were adopted (used) in the evaluation: Rock Mass Rating, Dam Mass Rating, and Geological Strength Index. The DMRSTA (RMR related to dam stability) values for the right bank range between 36.97- 73.8. These values indicate good stability of foundation rocks o

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Zhang, Qi, Qing Jiang, Yuanhai Li, Ning Wang, and Lei He. "Quality Evaluation of Rock Mass Using RMR14 Based on Multi-Source Data Fusion." Sensors 21, no. 21 (2021): 7108. http://dx.doi.org/10.3390/s21217108.

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The uncertainties in quality evaluations of rock mass are embedded in the underlying multi-source data composed by a variety of testing methods and some specialized sensors. To mitigate this issue, a proper method of data-driven computing for quality evaluation of rock mass based on the theory of multi-source data fusion is required. As the theory of multi-source data fusion, Dempster–Shafer (D-S) evidence theory is applied to the quality evaluation of rock mass. As the correlation between different rock mass indices is too large to be ignored, belief reinforcement and Murphy’s average belief

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12

Yuan, Haiping, Chenghao Chen, Yixian Wang, Hanbing Bian, and Yan Liu. "Joint Investigation and 3D Visual Evaluation of Rock Mass Quality." Advances in Civil Engineering 2020 (December 30, 2020): 1–16. http://dx.doi.org/10.1155/2020/8858322.

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In order to realize the high efficiency quality classification and three-dimensional visualization of engineering rock mass and to solve the technical difficulties of the traditional rock mass quality evaluation method such as high labor intensity, long process time consumption, many intervention processes such as scale measurement and manual calculation, and nonintuitive classification results, this paper puts forward a 3D visual rock mass quality evaluation method and system based on close-range photography, which optimizes the traditional rock mass quality evaluation method, makes the rock

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13

Sasangka, D. J. "Rock Slope Stability Evaluation on The Construction of New Road Shortcut 4 Border City of Singaraja – Mangwitani, Bali." IOP Conference Series: Earth and Environmental Science 940, no. 1 (2021): 012006. http://dx.doi.org/10.1088/1755-1315/940/1/012006.

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Abstract Shortcut 4 new national road development project on Singaraja - Mangwitani section Bali found a potential rock slide slope problem. An outcrop of igneous rock with an intensive joint was not expected to be encountered previously. The excavation work in road construction had to pay attention to the stability of the resulting rock slope considering that apart from the potential for slope failure, rock slope could also threaten the bridge abutment building in front of it. The location of the rock slope was on the edge of Lake Bratan which is geologically part of the early Holocene volcan

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Lee, Hyun-Koo, Myung-Kyu Song, Young-Oh Jeong, and Sean Seung-Won Lee. "Development of an Automatic Rock Mass Classification System Using Digital Tunnel Face Mapping." Applied Sciences 14, no. 19 (2024): 9024. http://dx.doi.org/10.3390/app14199024.

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To mitigate unforeseen incidents, such as key block failure or tunnel collapse during excavation, an appropriate support pattern that correlates with the geological conditions of the rock mass at the tunnel face should be designed. Rock mass evaluations should be conducted through geological face mapping during the construction phase, alongside predictions based on field investigations during the design phase. When marked discrepancies are identified, it is customary to convene an on-site evaluation involving a committee of experts. This study develops a digital tunnel face mapping system that

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15

Putera, Doni Apriadi, Heru Hendrayana, and I. Gde Budi Indrawan. "Engineering Geological Characteristics Based on Rock Mass Rating (RMR) and Geological Strength Index (GSI) in Jlantah Dam Intake Tunnel, Karanganyar District, Central Java Province." E3S Web of Conferences 325 (2021): 08003. http://dx.doi.org/10.1051/e3sconf/202132508003.

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This paper presents the results of a geological engineering investigation in the form of rock mass characterization at the Jlantah Dam Intake Tunnel. The study was carried out through technical geological mapping, core drill evaluation and supported by laboratory test data. The determination of rock mass classification at the research site has been carried out using the Rock Mass Rating (RMR) method, but it is necessary to use another method that is more suitable based on rock mass for weak rocks, namely using the Geological Strength Index (GSI) method.The rock mass quality will be used as a p

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16

Zhou, Xiaoyan, Yimin Jiang, Zhenyi Wang, and Yalei Wang. "Rockburst grade evaluation and parameter sensitivity analysis based on SSA-PNN framework: Considering rock mass strength." PLOS One 20, no. 6 (2025): e0325966. https://doi.org/10.1371/journal.pone.0325966.

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The occurrence of rockburst is closely related to the strength and stress conditions of rock mass. The Lalin Railway tunnel in China was taken as an example, the strength and stress parameters of rock mass at 22 rockburst locations were obtained by using the results of indoor and outdoor tests, including maximum in-situ stress, maximum tangential stress, uniaxial compressive strength of rock and uniaxial compressive strength of rock mass. These four parameters were then selected to form a rockburst grade evaluation index system. Furthermore, SSA (Sparrow search algorithm) and probabilistic neu

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17

Ruan, Yunkai, Jinzi Chen, Zhongmou Fan, et al. "Application of K-PSO Clustering Algorithm and Game Theory in Rock Mass Quality Evaluation of Maji Hydropower Station." Applied Sciences 13, no. 14 (2023): 8467. http://dx.doi.org/10.3390/app13148467.

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In this study, the K-means algorithm based on particle swarm optimization (K-PSO) and game theory are introduced to establish the quality evaluation model of a rock mass. Five evaluation factors were considered, i.e., uniaxial saturated compressive strength of rock, discontinuity spacing, acoustic velocity, rock quality designation (RQD), and integrity coefficient. The rock mass of an elevation adit at the abutment of Maji hydropower station was taken as a case study. The subjective weight of the evaluation factor was determined by the weighted least squares method, and the objective weight of

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18

Ootsuka, Yasunori, Takanori Ishikawa, Katsuhiro Tajima, et al. "Rock mass property evaluation based on the borehole wall images taken by using an ultrasonic scanner (USS)." Journal of Nepal Geological Society 55, no. 1 (2018): 1–6. http://dx.doi.org/10.3126/jngs.v55i1.22782.

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Discontinuities, such as faults and fractures exist even in Neogene soft sedimentary rocks. These discontinuities play an important role for determination of physical, mechanical and hydraulic properties of rock mass. For geological disposal of high-level radioactive waste, these data should be obtained for designs of the layout of repository, engineered barrier system and safety assessment. Rock mass properties are important information for quantitative rock mass classification as well as for design and construction of underground facilities and assessment of safe waste disposal. Ultrasonic w

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Ma, Chi, Peitao Wang, Jiajun Li, et al. "Support Patterns of Roadways Under Fractured Surrounding Rocks Based on the Quality Level of Rock Mass." Applied Sciences 14, no. 22 (2024): 10598. http://dx.doi.org/10.3390/app142210598.

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The roadway project of broken rock mass in the Shilu Iron Deposit was taken as the research object to discuss the stability control of the surrounding rocks using support patterns with broken rock mass. The grade evaluation of rock mass quality was conducted based on the geomechanical classification of rock mass. The roadway support effect in broken rock mass was calculated. Then, the section convergence characteristics of roadway surrounding rocks were analyzed under the current support scheme using displacement monitoring technology. The conclusions were described as follows: (1) The surroun

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Zhu, Xiaohong, Jianhong Jia, and Zhongwei Cai. "Classification Method and Application of Rock Fracture Ability by Supercritical CO2 Blasting." Shock and Vibration 2022 (January 11, 2022): 1–11. http://dx.doi.org/10.1155/2022/7973016.

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In order to study the fracture ability classification of rock mass under the cracking action of supercritical CO2 phase transition, based on the classification theory of rock mass in blasting engineering, an analytic hierarchy process (AHP)-entropy weight method (EWM) and the cloud model classification method for rock mass cracking under CO2 phase transformation are proposed. In this method, rock density, rock tensile strength, rock wave impedance, and rock mass integrity coefficient are used as the factors to determine the level of rock mass fracturing, and the evaluation index system of rock

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21

Kalouni, Suresh Raj, and Harendra Raj Kalouni. "Stability Evaluation of Rock Pillar Between Twin Tunnels Using Numerical Modelling." KTFT Journal 4 (October 4, 2024): 166–71. http://dx.doi.org/10.3126/ktftj.v4i1.70443.

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The stability of rock pillars between twin tunnels is a critical aspect of tunnel design and construction. To ensure the stability of rock pillars between twin tunnels, this study employ numerical modeling to assess pillar stability based on excavation method, tunnel geometry, determine pillar length based on rock mass quality, and quantify deformation, stress, and zone of influence of twin tunnels. To explore the role of rock mass quality in influencing pillar stability, the study considers factors such as rock strength, intactness, and discontinuity characteristics. Numerical modeling simula

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Tlashadze, Giorgi, Levan Gorgidze, and Mamuka Natsvlishvili. "Physical-mechanical Properties of Construction Site Bedrocks of Headworks and Powerhouse of “Khobi 2 HPP” Hydrotechnical Complex." Works of Georgian Technical University, no. 1(527) (March 21, 2023): 75–85. http://dx.doi.org/10.36073/1512-0996-2023-1-75-85.

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Modern methods of rock evaluation, such as Rock Quality Index (RQD), Rock Mass Rating (RMR) and Rock Mass Classification System (Q), are used within the field of geotechnical surveys. RQD was determined by D.U. Deere in 1963, as a simple classification system of rock mass stability. While using RQD index five classes of rocks (A-E) are determined. Q value can be determined in different ways: during mapping in underground excavations, on the surface or alternatively – on basis of core description. The most accurate values are obtained during underground geological mapping. Dividing the undergro

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23

Satria, Jabnes, I. Gde Budi Indrawan, and Nugroho Imam Setiawan. "Engineering geological characteristics based on rock mass rating (RMR) and geological strength index (GSI) in Tunnel Number 1 of the Sigli-Aceh toll road." E3S Web of Conferences 325 (2021): 01014. http://dx.doi.org/10.1051/e3sconf/202132501014.

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This paper presents engineering geological investigation results in the form of rock mass characteristics for tunnel number 1 of the Sigli-Aceh toll road. The investigation was carried out through geological mapping, core drill evaluation, and laboratory tests. In this research, the rock mass rating (RMR) and Geological Strength Index (GSI) were applied for the rock mass classifications. The measurement of rock mass quality is then used to determine the excavation method and tunnel support system on the SigliAceh toll road. The results showed that the research location consisted of calcareous

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Li, Zhuang, Hai Bo Han, Yi Feng Zheng, and Ming Li. "Acoustic Detection on Analysis of Rock Mass Integrality." Advanced Materials Research 859 (December 2013): 139–42. http://dx.doi.org/10.4028/www.scientific.net/amr.859.139.

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This paper briefly described borehole wave velocity test and the principle and method of wave velocity test technique, by using acoustic measurement and control technology of tunnel rock mass test, integrality index of rock mass is obtained, ultimately, we evaluate the rock mass integrity. The actual application effect is good and provides an important basis for the engineering rock mass quality evaluation.

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Zhang, Hai Bo, and Qun Yi Liu. "The Safety Status Evaluation of Rock Mass Element by Nonlinear Mechanics Model." Applied Mechanics and Materials 193-194 (August 2012): 675–78. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.675.

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Slope stability analysis is an important content in geotechnical engineering designing. And the safety factor is still the main index to evaluate the safety status of the whole slope, but the stability of each element of rock mass can not be reflected by the whole safety factor. Some scholars introduce the concept of point safety factor (PSF) to evaluate the stability of each element in rock-soil mass. However, the present work about PSF is remaining in the field of linear model, instead of nonlinear model. But in real situation, the nonlinear failure criterions are more adaptable used to desc

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Liu, Yu Ning, Li Juan Cao, and Zi Chang Shangguan. "Stability Evaluation and Analysis of Homogeneous Rock Slope Using Finite Element Method." Advanced Materials Research 838-841 (November 2013): 722–25. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.722.

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Rock mass is simplified as homogeneous material. Shear strength reduction approach is applied to evaluate stability of rock slope and calculate safety factor of sliding surface. Mohr-Coulomb fracture criterion is used to evaluate the sliding state of every element of finite element model for rock mass. The shear strength parameters of rock mass are evaluated from the laboratory tests and engineering analogy. The distributions of plastic zone at collapse state and safety factor of sliding surface are determined.

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Xiang, Wei, Hanlie Cheng, and David Cadasse. "Classification Method of Rock Structure and Rock Mass Quality of Surface Granite: Geological Disposal of High-Level Radioactive Waste in China." Adsorption Science & Technology 2022 (September 2, 2022): 1–11. http://dx.doi.org/10.1155/2022/7407532.

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The engineering quality of rock mass is a key factor to evaluate the long-term stability and safety of high-level radioactive waste (HLW) geological disposal engineering and is also the important basis for disposal site selection. Traditional rock mass quality classification methods, such as RMR and Q , can meet underground engineering but still should be studied further for the site evaluation in the HLW disposal engineering. In this study, rock mass structure rating (RMSG) was proposed based on the quantitative control index of rock mass structure which was from the rock mass quality classif

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Sokolov, Kirill, Larisa Fedorova, and Maksim Fedorov. "Prospecting and Evaluation of Underground Massive Ice by Ground-Penetrating Radar." Geosciences 10, no. 7 (2020): 274. http://dx.doi.org/10.3390/geosciences10070274.

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Data from geocryological studies of soil and rock massifs in permafrost zone are very important as a basis for predicting possible negative consequences associated with climate change. A promising technique for studying geocryological structures (various types of underground ice) is the ground-penetrating radar (GPR) method. This paper presents the applications of the GPR method to prospect and evaluate massive ice in a frozen rock mass. To study the features of GPR signals received during sounding of underground ice, a model of a single GPR trace for the structure “frozen rock-ice-frozen rock

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Sosnovskaya, E. L., and A. N. Avdeev. "Evaluation of the initial stressed state of rocks in the cryolitzone (on the example of Irokindinsky mining)." Mining informational and analytical bulletin, no. 3-1 (March 20, 2020): 208–15. http://dx.doi.org/10.25018/0236-1493-2020-31-0-208-215.

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In 2014-2017 at the Irokinda mine, due to the transition to new technological equipment, the thawing of permafrost rocks began, accompanied by manifestations of rock pressure. There was an urgent need to clarify the changed geotechnical conditions and evaluate the initial stresses of the rock mass. During the study, in situ stresses were measured for various cryogenic conditions of rocks: in permafrost, in transition zones of frozen rocks to thawed, thawed rocks. The measurements were made according the method of slotted relief based on the IM UB RAS by the author’s version of the segmented sl

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Fuławka, Krzysztof, Marcin Szumny, and Piotr Mertuszka. "Rock Mass Preconditioning Methods in Underground Mines and Ways of its Evaluation – state-of-the-art." Civil and Environmental Engineering Reports 34, no. 4 (2024): 381–402. https://doi.org/10.59440/ceer/196016.

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Currently, the most serious problem associated with underground mining of deposits is geomechanical hazard, which significantly disrupts the production process and exposes the mining crew to a threat to life and health. As recent achievements in the field of minimizing geomechanical hazards show, rock mass preconditioning is the most effective way to prevent the risk of rock bursts and mining-induced seismic activity in underground mines. In principle, rock mass preconditioning involves reducing rock mass strength parameters by the controlled creation in the fractured zones by introducing an e

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Kimour, Mohamed, Mohamed L. Boukelloul, Abdallah Hafsaoui, S. Narsis, Khadouja M. Benghadab, and Aissa Benselhoub. "Geomechanical characterization of rock mass rating and numerical modeling for underground mining excavation design." Journal of Geology, Geography and Geoecology 32, no. 1 (2023): 67–78. http://dx.doi.org/10.15421/112308.

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   The objective of the study is the geomechanical characterization of the rock mass rating RMR system and numerical modeling for mining underground excavation design of the Djebel El Ouahch tunnel, in Constantine (Algeria).The geological and geotechnical character- ization of the rock mass is important for the design of underground mining excavations. In this article, we present the results of the RMR characterization of the rock mass and the numerical modeling by the finite element method (FEM), under the conditions of the Djebel El Ouahch tunnel, Constantine (Algeria).The

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Yang, Shan, Zitong Xu, and Kaijun Su. "Variable Weight Matter–Element Extension Model for the Stability Classification of Slope Rock Mass." Mathematics 9, no. 21 (2021): 2807. http://dx.doi.org/10.3390/math9212807.

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The slope stability in an open-pit mine is closely related to the production safety and economic benefit of the mine. As a result of the increase in the number and scale of mine slopes, slope instability is frequently encountered in mines. Therefore, it is of scientific and social significance to strengthen the study of the stability of the slope rock mass. To accurately classify the stability of the slope rock mass in an open-pit mine, a new stability evaluation model of the slope rock mass was established based on variable weight and matter–element extension theory. First, based on the main

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Usanov, S. V., Yu P. Konovalova, E. Yu Efremov, О. D. Kharisova, and А. V. Usanova. "Unexpected deformation processes in the rock mass in surface mining: Emergence factors and prevention capabilities." Mining Industry Journal (Gornay Promishlennost), no. 1S/2022 (March 16, 2022): 111–18. http://dx.doi.org/10.30686/1609-9192-2022-1s-111-118.

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Unexpected abnormal deformation processes in rock masses lead to disruptions in the operation of mining facilities and endanger human life and health. The studies show that physiographic conditions, physical and mechanical properties of rocks, features of structural and tectonic structure of the rock mass can influence the unexpected character of the deformation phenomena. One of the important parameters that determines the development of catastrophic deformation processes is the geodynamic activity of the rock mass, which forms its stress state. The purpose of the research is to develop metho

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Magomedov, R. A. "EVALUATION OF STRESS-STRAIN STATE OF ROCK MASS." Herald of Dagestan State Technical University. Technical Sciences 41, no. 2 (2016): 132–38. http://dx.doi.org/10.21822/2073-6185-2016-41-2-132-138.

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Danuartha, MSH, K. W. Sadono, and T. T. Putranto. "Stability Evaluation of Bener Dam Diversion Tunnel During Construction." IOP Conference Series: Earth and Environmental Science 1098, no. 1 (2022): 012017. http://dx.doi.org/10.1088/1755-1315/1098/1/012017.

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Abstract Bener Dam Diversion Tunnel is located in two rock units such as andesite and andesite breccia. Based on the engineering geology investigation, the subsurface tunnel will penetrate andesite breccia with good rock mass quality (fresh-moderately weathered), while surrounding the tunnel consist of andesite breccias with moderate and poor rock mass quality. Geological and engineering geology conditions are used as the basis for stability analysis of excavation methods and determining primary tunnel support systems. Geological Strength Index is used for determining rock mass parameters. The

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Yue, Rui, Kegang Li, Qingci Qin, Mingliang Li, and Meng Li. "Study on the Weakening Law and Classification of Rock Mass Damage under Blasting Conditions." Energies 15, no. 5 (2022): 1809. http://dx.doi.org/10.3390/en15051809.

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To study the effects of declining mechanical parameters caused by blasting excavation on slopes, we introduced the damage degree index Ds, and established a relationship between Ds and the disturbance factor D in the Hoek–Brown criterion, along with a basic quality index BQ for the rock mass. We then explored the change law for the degree of rock damage Ds as a function of the disturbance factor D. We also used a phosphate mine slope in Guizhou Province for reference, and analyzed the process of damage evolution of the slope based on the RHT (Riedel-Hiermaier-Thoma Constitution) in LS-DYNA (Yu

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Wu, Xiao Guang, Zhi Qiang Yang, Qian Gao, and Duo Heng Ba. "The Classification and Quality Evaluation of Rock-Mass Based on Limited Geological Information." Applied Mechanics and Materials 580-583 (July 2014): 870–74. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.870.

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This paper takes the No. 1 ore body of Jinchuan 3rd mining area as an example, obtains the corresponding relation of surrounding rock quality evaluation index and spatial location.Through RMR rock classification method , using Rockware modeling system and limited geological informations, the statistical analysis of RMR and RQD showed that the rock of No. 1 ore body belongs to III~V type. Its rock mass is between normal to unstable. Through Rockware modeling system, we established the 3D rock properties model of UCS, RQD and RMR, and found that in the 5 to 6 rows of east hanging wall exists roc

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He, Peng, Shang-qu Sun, Gang Wang, and Wei-teng Li. "Gaussian Process Model of Surrounding Rock Classification Based on Digital Characterization of Rock Mass Structure and Its Application." Mathematical Problems in Engineering 2020 (October 18, 2020): 1–15. http://dx.doi.org/10.1155/2020/5264072.

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As the important data basis of surrounding rock classification, rock mass structural information obtained by traditional image processing and feature extraction algorithms could not be quantitatively analyzed because of the uncertainty and geometric randomness of structural planes. In this paper, based on straight line detection, intelligent scissors, and morphological edge detection algorithms, the multiple interpretation system of rock mass image including linear bunching extraction, magnetic tracking extraction, and multiparameter characterization was researched and developed, and the actua

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Hanif, Ikfi Maasyi, and I. Gde Budi Indrawan. "The Evaluation of the Stability of Donan Cave, Pangandaran, West Java, Based on the Classification of Rock Mass." Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) 7, no. 4 (2021): 241. http://dx.doi.org/10.22146/jpkm.47107.

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Assessment of rock mass quality was conducted to estimate the stability of Donan Cave. This research involved geological mapping, cave geometry mapping, rock mass quality zoning by scanline survey based on the Q-system rock mass classification, and cave stability estimation based on the rock mass quality, ratio of cave roof thickness to width, and load. The research results indicate that Donan Cave is composed of limestone of the Kalipucang Formation. Several faults are located in the vicinity of Donan Cave. Donan Cave is dominated by good to very good quality rock masses and is estimated to b

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Chen, Xiang, Xiao Bo Qi, and Zhao Yi Xu. "Surrounding Rock Mass Quality Evaluation of Huangdao Water Sealed Underground Oil Tank." Advanced Materials Research 261-263 (May 2011): 1877–81. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.1877.

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Huangdao water sealed underground oil tank, which lies in Qingdao, Shandong province, is one of strategic reservoir of oil in China. Targeting at a real pragmatic problem that sometimes the rock mass integrity index is more than 1 and taking Huangdao water sealed underground oil tank as an example, the rock sample wave velocity-stress relation tests are carried out. Then unloading index is put forward and formula of raock integrity index is modified so as to improve rock quality classification method. In the end, the improved rock quality classification method is applied to Huangdao water seal

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Lin, Fang, Hebing Luan, Yanhua Zeng, and Zhibin Zhong. "Some New Correlations of Q-Value with Rock Mechanics Parameters in Underground Oil Storage Caverns." Civil Engineering Journal 3, no. 8 (2017): 537–46. http://dx.doi.org/10.28991/cej-2017-00000111.

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Q-system is a preferred alternative method of rock mass classification for underground oil storage caverns where stable lithological rocks are widely distributed. In this paper, correspondences between important input rock mechanics parameters (friction angle, cohesion, tensile strength, Poisson’s ratio, deformation modulus) and Q values were investigated, thereby bringing convenient to rapidly obtain available parameters when it’s hard to collect measured field data in underground storage projects basically with similar lithology. The proposed correlations were verified through numerical simu

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Zhang, Liguo, Dong Wang, Guanghe Li, Jiaxing Dong, and Junpeng Zhang. "Stability Analysis and Reliability Evaluation in Cataclastic Loose Rock Mass Blocks." Advances in Civil Engineering 2021 (January 2, 2021): 1–9. http://dx.doi.org/10.1155/2021/5314937.

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Cataclastic rock masses with multiple failure modes and mechanisms are critical geological problems in the construction of rock slopes. Cataclastic rock masses are widely distributed in slopes of a hydropower project located on Lancang River, which is located in Tibet, China. In this study, the potentially unstable block of the slope is divided into key block and secondary key block based on the key block theory, and the system reliability evaluation theory is introduced. The method for quantitatively analyzing the rock mass stability of cataclastic slopes with sliding failure is established.

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Fereidooni, Davood, Gholam Reza Khanlari, and Mojtaba Heidari. "Assessment of a Modified Rock Mass Classification System for Rock Slope Stability Analysis in the Q-system." Earth Sciences Research Journal 19, no. 2 (2015): 147–52. http://dx.doi.org/10.15446/esrj.v19n2.49127.

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<p>This paper explores the applicability of a modified Q classification system and its component parameters for analysis and conclusion of site investigation data to estimate rock slope stability. Based on the literature, Q classification system has high applicable potential for evaluation of rock mass quality. Therefore, in this study, it was used with RMR and SMR rock mass classification systems to assess stability or instability of different rock slopes along the Hamedan-Ganjnameh-Tuyserkan road, Hamedan province west of Iran. Furthermore, a modified rock mass classification system na

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Azad, Md Alquamar, Neelratan Singh, S. K. Singh, and Apurva Alok. "Evaluation of a Preliminary Support Design of Railway Tunnel Adit in Inner Lesser Himalaya India: An Empirical Analysis." IOP Conference Series: Earth and Environmental Science 1032, no. 1 (2022): 012019. http://dx.doi.org/10.1088/1755-1315/1032/1/012019.

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Abstract This article addresses the excavation method and support design for the adit tunnel in the Rudraprayag District, Lesser Himalayas of India, using Rock Mass Rating (RMR), Tunneling Quality Index (Q), and New Austrian Tunneling Method (NATM). Based on ONORM B 2203 correlations with RMR and Q systems, the New Austrian Tunneling Method rock structure classes were developed. Because the geology was constantly changing, NATM concepts were applied. The RMR-based rock mass estimates were overestimated, but the qualitative investigation was correct. The NATM method is more appropriate for a Ga

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Hrubesova, Eva, and Marek Mohyla. "Back Analysis Methods in Geotechnical Engineering." Advanced Materials Research 1020 (October 2014): 423–28. http://dx.doi.org/10.4028/www.scientific.net/amr.1020.423.

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The paper deals with the back analysis method in geotechnical engineering, that goal is evaluation the more objective and reliable parameters of the rock mass on the basis of in-situ measurements. Stress, deformational, strength and rheological parameters of the rock mass are usually determined by some inaccuracies and errors arising from the complexity and variability of the rock mass. This higher or lower degree of imprecision is reflected in the reliability of the mathematical modelling results. The paper presents the utilization of direct optimization back analysis method, based on the the

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Ma, Qiang, Guang Jie Li, and Yuan Hong. "The Evaluation of Stability of Rock Mass Slope Based on the Block Theory and DDA Numerical." Applied Mechanics and Materials 353-356 (August 2013): 1051–56. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.1051.

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The instability of rock mass in a large scale is caused by the geological interaction and movement over a long period of time, of which rock mass system cut by structural plane and free surface. Firstly the block theory and Kinematics vector analysis are applied to program the analysis of stability in rock mass slope in order to be fully utilised in the pragmatic constructions. Through Matlab compilation to calculate out the movable blocks then by DDA analysis method to analyse the movable blocks inconsecutively. The resultant force of rock blocks and strain can be solved to measure the stabil

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Liu, Hongyan, and Xiaoping Yuan. "A Compressive Damage Constitutive Model for Rock Mass with a Set of Nonpersistently Closed Joints under Biaxial Conditions." Mathematical Problems in Engineering 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/136971.

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One of the most problems faced by the practical rock engineering is to evaluate the rock mass strength. Now the existing theoretical evaluation of the mechanical property of jointed rock mass has no satisfactory answer yet because of the great number of variables involved. One of them is the nonpersistent joints which inherently affect the rock mass mechanical behavior. The previous models for rock mass can only reflect the effect of joint geometrical property on its mechanical behavior. Accordingly, this paper presents a new theoretical model to evaluate the mechanical behavior of the rock ma

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Merzlikin, Artem, Victor Nazimko, and Igor Єfremov. "Evaluation of high rock pressure zone parameters under conditions of an active mining panel." Naukovyi visnyk Donetskoho natsionalnoho tekhnichnoho universytetu 1, no. 14 (2025): 103–22. https://doi.org/10.31474/2415-7902-2025-1-14-103-122.

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Purpose. The aim of this study is to quantitatively assess the spatial and stress characteristics of the high rock pressure zone under the conditions of an active mining panel, taking into account the temporal evolution of the stress state and the sequence of extraction of adjacent seams. Particular attention is paid to identifying the nature of the rock pressure gradient variation within the rock mass in the vicinity of the active longwall face. Methodology. The finite element method was employed for three-dimensional modeling of the stress–strain state of the rock mass. The numerical model i

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Arianto, Benny, I. Gde Budi Indrawan, and I. Wayan Warmada. "Multi-Rock Mass Classification Systems for the Assessment of Excavation Method and Support Design of Spillway Tunnel, Sidan Dam, Bali, Indonesia." E3S Web of Conferences 468 (2023): 02004. http://dx.doi.org/10.1051/e3sconf/202346802004.

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This paper presents the implementation of rock mass classification systems to determine the excavation method and the support design of the Spillway Tunnel, Sidan Dam, Bali, Indonesia. In order to mitigate the uncertainty associated with using single rock mass classification during designing tunnels, this study provides an evaluation by applying multiple rock mass classifications. Rock Mass Rating (RMR), QSystem, Geological Strength Index (GSI), Japan Society of Civil Engineering (JSCE), and Rock Mass Index (RMi) were among the rock mass classification systems used for comprehensive analysis.

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Dai, Bing, Danli Li, Lei Zhang, Yong Liu, Zhijun Zhang, and Shirui Chen. "Rock Mass Classification Method Based on Entropy Weight–TOPSIS–Grey Correlation Analysis." Sustainability 14, no. 17 (2022): 10500. http://dx.doi.org/10.3390/su141710500.

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The accurate and reliable classification of rock mass is the basis of a reasonable engineering design. In the Xishan mining region of Sanshandao Gold Mine, three conventional rock mass classification methods of Tunneling Quality Index (Q), Rock Mass Rating (RMR) and China National Standard-basic quality (BQ), were compared in the burial depth area above 780 m, and it was discovered that the classification results of different rock mass classification methods had a low coincidence rate in the deep area; Therefore, this paper adopted entropy weight method, TOPSIS method and grey correlation anal

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