随机块体对泰山抽水蓄能电站地下厂房稳定性的影响分析

发布时间：2018-03-11 16:48

本文选题：抽水蓄能电站　切入点：关键块体理论　出处：《现代隧道技术》2017年03期 　论文类型：期刊论文

【摘要】：关键块体的稳定性决定着岩体地下洞室的整体稳定性,因此确定洞室围岩关键块体的位置、大小以及关键块体失稳模式对控制及预测洞室的安全性至关重要。泰山抽水蓄能电站地下厂房围岩受到不连续面切割,存在稳定性问题,故对其长期稳定性进行了深入研究。在获得研究区节理裂隙产状概率特征的基础上,采用赤平极射投影法确定该区地下厂房概率最大失效模式,搜索厂房区关键块体的位置,并对其长期稳定性进行分析预测,给出关键块体安全性的定量指标。同时将强度折减法与关键块体理论相结合,对地下厂房长期稳定性及风险进行了有效预测,研究成果可为泰山抽水蓄能电站后续加固方案的制定提供借鉴与依据。
[Abstract]:The stability of the key blocks determines the overall stability of the underground caverns, so the location of the key blocks in the surrounding rock mass of the caverns is determined. The size and the instability mode of the key blocks are very important to control and predict the safety of the cavern. The surrounding rock of underground powerhouse of Taishan pumped storage power station is cut by discontinuous surface, which has the problem of stability. On the basis of obtaining the probability characteristics of the occurrence of joints and fractures in the study area, the maximum failure mode of probability of underground powerhouse in this area is determined by the method of plane projection, and the location of the key blocks in the powerhouse area is searched. At the same time, the long-term stability and risk of underground powerhouse are effectively predicted by combining the strength reduction method with the key block theory. The research results can be used for reference and basis for the subsequent reinforcement scheme of Taishan Pumped-storage Power Station.
【作者单位】：山东泰山抽水蓄能电站有限责任公司;山东大学土建与水利学院;
【基金】：国家自然科学基金项目(41272325) 国家电网新源公司项目(SGXY-2014FJ04-73,GXY-2014FJ04-74) 国家留学基金项目(201306225024)
【分类号】：TV223.1;TV731.6

【参考文献】