Reliability Analysis of Rock Block Stability and Support for Underground Water-Sealed Storage Caverns

被引：0
|
作者：
Qiao L.-P. [1 ]
Lu W.-L. [1 ]
Min Z.-S. [2 ]
Wang Z.-C. [3 ]
机构：
[1] School of Resources & Civil Engineering, Northeastern University, Shenyang
[2] Liaohe Oilfield Exploration and Development Research Institute, Panjin
[3] Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2023年 / 44卷 / 04期
关键词：
failure probability; Monte Carlo method; optimization; parameter inspection; parameter uncertainty; support reliability; underground water-sealed storage cavern;
D O I：
10.12068/j.issn.1005-3026.2023.04.012
中图分类号：
学科分类号：
摘要：
The stochastic distribution of geometrical and mechanical parameters of rock joints causes a high degree of uncertainty in the stability of rock mass engineering.Taking a project of underground water-sealed storage caverns as an example, and considering the uncertainty of dip directions, dip angles, cohesion and friction angles, the reliability of surrounding rock block stability and support system are studied using the reliability theory and numerical simulation, and the support parameters are tested and optimized.The results show that the reliability indexes of the surrounding rock blocks of Grade Ⅰ to IV are 4.23, 1.68, 0.65 and-0.07, respectively.After the support system is applied to Grade II, III and IV surrounding rocks, the reliability indexes of the surrounding rock blocks are 3.3, 3.0 and 2.0, respectively.The row spacing between supports is optimized, and the recommended values are 2.8, 2.0 and 1.6 m for the surrounding rock blocks of Grade II, III and IV, respectively. © 2023 Northeastern University.All rights reserved.
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页码：544 / 550
页数：6
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