高地应力条件下岩体松弛时间效应检测  

Detection on Time-Effect of Rock Relaxation under High-Stressed Ground Condition

作　　者：廖伟[1] 何刚[1] 许海燕[2] 邓希贵[1] 

机构地区：[1]四川中水成勘院工程勘察有限责任公司,四川成都610072 [2]中国水电顾问集团成都勘测设计研究院,四川成都610072

出　　处：《工程地球物理学报》2011年第5期609-615,共7页Chinese Journal of Engineering Geophysics

摘　　要：锦屏一级水电站枢纽区位于构造应力与高自重应力叠加造成天然状态下的高地应力区。查明高地应力条件下大跨度地下洞室和高陡坝基开挖后各部位岩体波速以及松弛岩体随时间变化情况,正确评价高地应力区岩体开挖卸荷松弛程度和岩体质量,为指导施工开挖和岩体卸荷松弛加固设计提供依据。The Jinping hydropower complex is located in the high stressed area within the joint of tectonic stress and self-gravity stress.In order to understand the change of rock wave speed and rock release after the excavation of long-span caves and high-angle basement,it is important to evaluate the gradient of stress release and rock quality after excavation in high stress area for guiding the excavating work and consolidation design of stress-released rock.

关 键 词：高地应力 岩体松弛 长观孔 地下洞室 高陡坝基 

分 类 号：P631.4[天文地球—地质矿产勘探]