基于块体理论的平硐围岩稳定性分析  

Stability Analysis of Surrounding Rock in Adit Based on Block Theory

作　　者：聂进 尤鸿 王连培 Nie Jin;You Hong;Wang Lianpei(Yunnan Institute of Water&Hydropower Engineering Investigation,Design and Research,Kunming,China)

机构地区：[1]云南省水利水电勘测设计研究院,云南昆明

出　　处：《科学技术创新》2024年第11期17-20,共4页Scientific and Technological Innovation

摘　　要：在平硐开挖过程中,平硐围岩以块体方式出现破坏失稳,平硐内破坏的部分被称为“关键块体”。本文以某平硐为例,根据关键块体理论的基本原理,采用赤平投影法识别可能的关键块体,并采用矢量分析法对其结论进行引证,为平硐围岩稳定性评价提供依据。得出如下结论:1.确定了组合1、2构成的局部块体为可动块体;2.赤平投影法分析与矢量分析法得到结果一致。In the process of tunnel excavation,the surrounding rock of the tunnel is damaged and unstable in the form of block,and the damaged part in the tunnel is called"critical block".This paper takes a tunnel as an example,according to the basic principle of the key block theory,identifies the possible key block by the eradial projection method,and uses the vector analysis method to cite the conclusion,which provides the basis for the stability evaluation of the surrounding rock in the tunnel.The following conclusions are drawn:1.The local blocks composed of combinations 1,2 are movable blocks;2.The results obtained by erector projection method are consistent with those obtained by vector analysis method.

关 键 词：块体理论 赤平投影法 矢量分析法 

分 类 号：TD353[矿业工程—矿井建设]