Stability analysis and reinforcement on three-dimensional slope based on long-term strength of rock mass

2014 ◽  
pp. 763-766
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Three Dimensional ◽  
Term Strength

Study of the Three-Dimensional Global Limit Equilibrium Method Applied to the Stability of Rock Slope

2012 ◽  
Vol 249-250 ◽  
pp. 1099-1102
Author(s):  
Yi Sheng Huang ◽  
Jian Lin Li
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Slip Surface ◽  
Limit Equilibrium ◽  
Limit State ◽  
Three Dimensional ◽  
Limit Equilibrium Method ◽  
Equilibrium Method ◽  
The Stability ◽  
Loose Rock

Amending the normal stress over the slip surface based on the stress field by numerical analysis, applying the three-dimensional global limit equilibrium method to the stability analysis of tension-slackened rock mass in the right bank of Yagen hydropower station. Stability analysis shows that if do not take any measures, the loose rock mass stability can cater to the Specification demand, but some small sliders is in the limit state under the water and earthquake condition, if use the cutting slope and unloading scheme, the whole loose rock mass and the all small sliders can meet the Specification standard stability requirements.

Research and Application of Slope Stability Analysis Method Based on Engineering Mechanics and Engineering Materials

2014 ◽  
Vol 886 ◽  
pp. 432-435
Author(s):  
Shao Jie Feng ◽  
Shi Guo Sun ◽  
Xue Fang Zhao ◽  
Liang Tan
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Slope Stability ◽  
Slip Surface ◽  
Three Dimensional ◽  
Field Method ◽  
Slope Stability Analysis ◽  
Analysis Method ◽  
Rock Mass Failure ◽  
Slope Rock

Considering the features of slope rock mass failure, this paper applies residual thrust method and linear programming theory on the basis of finite element method, to assess safety of each cell of slope rock mass in dangerous zone. According to the slip field method to determine three-dimensional slope slip surface, to deduce three-dimensional stability analysis method based on symmetry breaking, a C++ based 3D-slope program is developed for purposes of three-dimensional slope stability analysis. Finally get the most dangerous landslide geometry and its safety factor, In the paper, combining with the engineering examples, the calculating results are comfortable to the practical failure.

scholarly journals Discontinuous mechanical analysis of manifold element strain of rock slope based on open source Gempy

2021 ◽  
Vol 248 ◽  
pp. 03084
Author(s):  
Jie Wu ◽  
Bingyang Sun
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Open Source ◽  
Interpolation Method ◽  
Data Use ◽  
Three Dimensional ◽  
Geological Model ◽  
Geological Modeling ◽  
Fault Surface ◽  
Interactive Operation

Three-dimensional geological modeling is an important means to transparently study the three-dimensional geological spatial structure and change trend of major complex rock mass projects, and plays a very important role in the decision-making and mining of major projects. Today’s modeling methods rely too much on the required data, the process is cumbersome and the time is relatively long. Therefore, based on the above discussion, this article uses a complete open source code geological modeling method here, based on the implicit potential field interpolation method of the open source GemPy package, using this interpolation algorithm can be relatively simple to build a complex full three-dimensional geological model, Including fault network, fault surface interaction, unconformity and dome structure. The article describes in detail how to construct the faults and strata of the 3D geological model, and how to add topographic maps, and use the generated model as input data, use MOOSE to voxelize it, and export the required data, use NMM Perform stability analysis. This method has the advantages of simple operation, fast modeling speed, and visual interactive operation. The establishment of a three-dimensional geological model of the fractured rock mass was very effective, laying a solid foundation for the subsequent stability analysis.

scholarly journals Angren coal pit Centralny landslide slope stability analysis based on a three-dimensional geological-geophysical model

2020 ◽  
pp. 39-49
Author(s):  
Mikhail Karablin ◽  
◽  
Sergei Prostov ◽  
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Slope Stability ◽  
Water Saturation ◽  
Three Dimensional ◽  
Friction Angle ◽  
Slope Stability Analysis ◽  
Geophysical Model ◽  
Landslide Stability ◽  
Adjacent Rock

Introduction. In the course of mining mineral deposits by opencast, natural stress state of adjacent rock mass changes giving rise to geomechanical processes which lead to pit slopes deformation. It can be prevented by mean of detecting landslide-hazardous zone by using three-dimensional geological-geophysical models based on the data bases from prospecting surveys and geophysical sounding of the adjacent rock. Research aim is to develop and evaluate basic provisions of the methods of forecasting slope stability based on three-dimensional geological-geophysical models which include the following information: the results of geophysical sounding (waterlogged zones boundaries); databases of exploration wells (physicalmechanical properties of soils in the zones of water saturation and natural moisture content, and the relief of the natural surfaces of weakness); design and actual position of mine workings. Methodology. In order to find the most hazardous section in the adjacent rock mass an algorithm of forecasting has been proposed and adjacent rock mass stability has been analyzed based on threedimensional geological-geophysical models. Results. A three-dimensional geological-geophysical model of Centralny landslide has been constructed as a result of analyzing geological survey databases, surveying instrumental observations over the deformations, and electrical sounding of the adjacent rock mass. Values of the friction angle and cohesion were found with using the inverse calculation method. Centralny landslide stability forecast has been analyzed as of the year of 2018 and after the final completion of the first stage of loading-out the front section in 2025. Summary. Developed an algorithm of slope stability analysis makes it possible to solve the task of finding the most hazardous section or landslide area by means of computer-based realization.

scholarly journals Creep Fracture Characteristics of Fractured Rock Mass Strengthened with Toughened Epoxy Resin

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Jun Wang ◽  
Junjie Xu ◽  
Zhipeng Nie ◽  
Lin Liu ◽  
Min Qin ◽  
...  
Keyword(s):  
Rock Mass ◽  
Epoxy Resin ◽  
Fractured Rock ◽  
Creep Model ◽  
Term Strength ◽  
Fractured Rock Mass ◽  
Opening Displacement ◽  
Toughened Epoxy ◽  
Powder Content

For improving the toughness and long-term strength of the fractured rock mass reinforced with epoxy resin and reducing the opening displacement of the crack tip, three types of converging cracks are established according to the deformation and failure characteristics of the rock mass, structural planes, and epoxy resin composite structure. The stress intensity factor of the type II compound crack and the analytical formula of the crack surface tip opening displacement are obtained. An improved Kelvin nonlinear creep model is proposed. Through the creep isochronous curve, the time and long-term strength of accelerated creep failure are obtained, as well as creep rupture coupling characteristics. The ductile plastic deformation is used to characterize the toughness, and the toughness of epoxy resin is enhanced by adding mud powder, and the relationship between toughness and long-term strength is established. Combined with experimental verification, when the drying mud powder content is 20%, the toughness of the epoxy resin has a good correlation with the long-term strength; when the mud powder content exceeds 30%, its ductility and long-term strength decrease, and at the same time the toughness effect is significantly weakened. The research results can provide a useful reference for toughened epoxy resin to strengthen fractured rock mass engineering.

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