Novel methods for quantitative analysis of kinematic stability and slope mass rating in jointed rock slopes with the aid of a new computer application

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Jagadish Kundu ◽  
Kripamoy Sarkar ◽  
A. K. Verma ◽  
T. N. Singh
Keyword(s):  
Quantitative Analysis ◽  
Jointed Rock ◽  
Computer Application ◽  
Rock Slopes ◽  
Slope Mass Rating ◽  
Novel Methods

scholarly journals An Energy-Based Discrete Element Modeling Method Coupled with Time-Series Analysis for Investigating Deformations and Failures of Jointed Rock Slopes

2021 ◽  
Vol 11 (12) ◽  
pp. 5447
Author(s):  
Xiaona Zhang ◽  
Gang Mei ◽  
Ning Xi ◽  
Ziyang Liu ◽  
Ruoshen Lin
Keyword(s):  
Time Series ◽  
Iterative Process ◽  
Discrete Element ◽  
Jointed Rock ◽  
Modeling Method ◽  
Discrete Element Modeling ◽  
Rock Slopes ◽  
Sliding Surface ◽  
Element Modeling ◽  
Displacement Based

The discrete element method (DEM) can be effectively used in investigations of the deformations and failures of jointed rock slopes. However, when to appropriately terminate the DEM iterative process is not clear. Recently, a displacement-based discrete element modeling method for jointed rock slopes was proposed to determine when the DEM iterative process is terminated, and it considers displacements that come from rock blocks located near the potential sliding surface that needs to be determined before the DEM modeling. In this paper, an energy-based discrete element modeling method combined with time-series analysis is proposed to investigate the deformations and failures of jointed rock slopes. The proposed method defines an energy-based criterion to determine when to terminate the DEM iterative process in analyzing the deformations and failures of jointed rock slopes. The novelty of the proposed energy-based method is that, it is more applicable than the displacement-based method because it does not need to determine the position of the potential sliding surface before DEM modeling. The proposed energy-based method is a generalized form of the displacement-based discrete element modeling method, and the proposed method considers not only the displacement of each block but also the weight of each block. Moreover, the computational cost of the proposed method is approximately the same as that of the displacement-based discrete element modeling method. To validate that the proposed energy-based method is effective, the proposed method is used to analyze a simple jointed rock slope; the result is compared to that achieved by using the displacement-based method, and the comparative results are basically consistent. The proposed energy-based method can be commonly used to analyze the deformations and failures of general rock slopes where it is difficult to determine the obvious potential sliding surface.

Discrete modelling jointed rock slopes using mathematical programming methods

2018 ◽  
Vol 96 ◽  
pp. 189-202 ◽  
Author(s):  
J. Meng ◽  
J. Huang ◽  
S.W. Sloan ◽  
D. Sheng
Keyword(s):  
Mathematical Programming ◽  
Jointed Rock ◽  
Rock Slopes ◽  
Discrete Modelling

Jointed Rock Slopes Stability Analysis Using PFC2D

2013 ◽  
Author(s):  
Jingjing Meng ◽  
Ping Cao ◽  
Ke Zhang
Keyword(s):  
Stability Analysis ◽  
Jointed Rock ◽  
Rock Slopes

A discussion on the adjustment parameters of the Slope Mass Rating (SMR) system for rock slopes

2016 ◽  
Vol 206 ◽  
pp. 42-49 ◽  
Author(s):  
Jun Zheng ◽  
Yu Zhao ◽  
Qing Lü ◽  
Jianhui Deng ◽  
Xiaohua Pan ◽  
...  
Keyword(s):  
Rock Slopes ◽  
Slope Mass Rating

scholarly journals Slope mass rating of rock slopes of the Malekhu River, central Nepal Lesser Himalaya

2014 ◽  
Vol 47 (1) ◽  
pp. 36-46
Author(s):  
Naresh Kazi Tamrakar ◽  
Jaya Laxmi Singh
Keyword(s):  
Rock Mass ◽  
Slope Stability ◽  
Failure Mode ◽  
Rock Mass Rating ◽  
Rock Slopes ◽  
Plane Failure ◽  
Central Nepal ◽  
Slope Mass Rating ◽  
Unstable Slope ◽  
Rock Mass Slopes

The Malekhu River is one of the major tributaries of the Trishuli Ganga River fl owing from the south in Malekhu region, central Nepal. Riverbank slope stability is a topic of concern as rock mass condition and slope stability of riverbank slopes are important parameters for riverbank erodibility. Fourteen sites in the Malekhu River were selected for rock mass rating (RMR) and then slope mass rating (SMR) by using a graphic method. The potentially vulnerable sites were identifi ed after conducting field study in different slopes. The results indicate that there occur modes of failures ranging from stable (good rock mass) to partially stable (normal rock mass) in all the study sites. The unstable (bad rock mass) and completely unstable (very bad rock mass) slopes are, however, distributed only in some slopes. The unstable slope of plane failure mode is Ka1, whereas the completely unstable slopes of plane failure mode are Rb2, Ml1 Slope 1 and Ml2. The unstable slope of toppling failure mode is Ml2. When wedge failure mode is considered, the slopes at Ti1 and Ka1 are unstable while the slopes at Kh1, Ka1, Ml1 Slope 1 are completely unstable. The rock slopes with unstable to completely unstable states are considered bad (SMR Class IV: 21–40) to very bad (SMR Class V: 0–20) rock mass with fair to poor rock mass rating, respectively. These bad to very bad rock mass slopes are vulnerable to slope movements and river erosion, and they require mitigative measures.

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