摘要
为了分析在复杂地质条件下大型地下洞室群的稳定性,以某水电站地下洞室群工程为研究对象,阐述了其工程地质赋存条件,指出了影响其开挖稳定的三大因素(高应力、大尺寸、复杂地质条件),概化了其典型地质剖面,并依此建立了数值仿真分析模型,进行开挖后洞室群稳定性分析。通过对计算结果分析,提出了相应的支护措施,并根据位移监测结果、声波测试结果对数值计算结果进行了相应的验证,结果表明,数值分析结果可信度较高,可作为工程稳定分析依据。
In view of the underground cavities of a hydropower station, the engineering geological conditions of underground cavities are illustrated for the stability analysis, three factors （high stress, large scale, complex geological conditions） affecting the stability of excavation are pointed out, and the numerical simulation model is set up based on the generalization of the typical geological sections. Moreover, the corresponding support measures are proposed through the stability analysis, and the calculations are verified according to displacement monitoring and acoustic wave tests. The result shows that the numerical analysis is highly reliable, which can provide a basis for engineering stability analysis.
出处
《人民长江》
北大核心
2012年第3期39-42,共4页
Yangtze River
关键词
地下洞室群
数值仿真
稳定性分析
声波测试
underground cavities
numerical simulation
stability analysis
acoustic wave test
