摘要
为了解深圳抽水蓄能电站高压隧洞裂隙密集区岩体变形特性,针对衬砌前隧洞围岩开展了钻孔变形和岩体声波试验工作。与前期勘探平硐内承压板变形试验结果对比,分析了裂隙产状对试验结果的影响,认为陡倾角裂隙对钻孔变形试验结果影响较大、裂隙区的岩体变形模量普遍降低。研究成果对提高岩体现场变形试验的准确性及代表性具有一定的参考价值。
In order to understand the rock mass deformation characteristics in densely fractured zone of high pressure tunnel in Shenzhen Pumped Storage Power Station,the borehole deformation and rock acoustic test were carried out to the tunnel surrounding rock mass before lining,and the test results were compared with bearing plate deformation test in the earlier exploratory stage.The influence of fracture occurrence on test results is analyzed and it is concluded that the steep dip fracture has significant influence on borehole deformation test and the deformation modulus in fracture zone is usually decreased. The research results can be a reference for the accuracy and representativeness improvement of in-situ rock deformation test.
出处
《人民长江》
北大核心
2016年第15期87-90,共4页
Yangtze River
基金
中央级公益性科研院所基本业务费(CKSF2015040/YT
CKSF2016041/YT)
关键词
岩体
原位变形试验
高压隧洞
裂隙
深圳抽水蓄能电站
rock mass
in-situ deformation test
high pressure tunnel
fracture
Shenzhen Pumped Storage Power Station
