岩体地下洞室块体稳定性分析及对策  

Stability Analysis and Countermeasures of Rock Block in Underground Cavern

作　　者：杨继华 张辉 崔臻[2] YANG Jihua;ZHANG Hui;CUI Zhen(Yellow River Engineering Consulting Co., Ltd, Zhengzhou 450003,China;Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071,China)

机构地区：[1]黄河勘测规划设计研究院有限公司,河南郑州450003 [2]中国科学院武汉岩土力学研究所,湖北武汉430071

出　　处：《广东水利水电》2021年第5期23-27,共5页Guangdong Water Resources and Hydropower

基　　金：国家自然科学基金资助项目(编号:52079133);黄河勘测规划设计研究院有限公司自主研究开发项目(编号:2018-ky10)。

摘　　要：针对地下洞室块体稳定问题,以江门地下实验站为背景,基于块体理论和块体稳定分析程序UNWEDGE,通过开挖过程中的节理统计,对不同节理组合条件下的块体进行了稳定分析,采用UNWEDGE计算得出了块体的安全系数,对于安全系数不满足要求的块体,提出了采用锚杆及喷射混凝土的支护加固措施,支护后块体安全系数均大于2.5,保证了块体的稳定。Aiming at the block stability problem in underground cavern,taking Jiangmen underground experimental station as the background,based on block theory and block stability analysis program UNWEDGE,the block stability under different joint combination conditions is analyzed through joint statistics during excavation.The safety factor of block is calculated by UNWEDGE.For blocks whose safety factor does not meet the requirements,the support and reinforcement measurement of bolt and shotcrete are proposed.The results show that the safety factor of the block is greater than 2.5,which ensures the stability of the block.

关 键 词：地下洞室 块体稳定性 UNWEDGE程序 安全系数 锚杆 喷射混凝土 

分 类 号：TU457[建筑科学—岩土工程]