某地下洞室围岩松动区深度的测试与分析  

Test and Analysis for Surrounding Rockmass Disturbed Zone of Underground Cavern

作　　者：董燕君[1] 黄志鹏[2] 陈赛超[1] 

机构地区：[1]中南勘测设计研究院,湖南长沙410014 [2]水利部岩土力学与工程重点实验室重庆岩基研究中心,重庆400014

出　　处：《岩土工程技术》2009年第1期44-47,共4页Geotechnical Engineering Technique

摘　　要：地下洞室开挖后,地应力重新分布,在洞室围岩周围形成一定深度的松动区,松动区深度的确定对评价围岩稳定性和指导洞室支护设计都具有重意义。利用围岩超声波测试成果和施工期位移监测成果,通过对比分析确定出某洞室围岩松动区的深度范围,为选择合理的围岩支护参数提供依据。The excavation of the underground chamber causes the redistribution of the geostress, and certain thickness of the disturbed zone produced surrounding rockmass. It is important to measure out the thickness of the disturbed zone for evaluating the stability of the surrounding rockmass and designing the support of tunnel. Comparing the results of supersonic test with the results of monitoring the displacement during the construction, the scope of the tunnel wall rocks disturbed zone can be measured,and the fit parameters is offered for support of the wall rocks.

关 键 词：围岩松动区厚度 声波测试 位移监测 

分 类 号：TU452[建筑科学—岩土工程] TU454[建筑科学—土工工程]