蒲石河抽水蓄能电站地下厂房区三维地应力测量研究  

Measurements of Three-dimensional Geostress in Hydropower Station of Pushi River

作　　者：吴少华[1] 张文东[2,3] 李克绵 刘天鹏[2,3] 赵立旺 

机构地区：[1]南水北调中线干线工程建设管理局河北直管项目建设管理部,石家庄050035 [2]中水东北勘测设计研究有限责任公司,长春130061 [3]水利部寒区工程技术研究中心,长春130061

出　　处：《水利科技与经济》2012年第10期38-41,共4页Water Conservancy Science and Technology and Economy

摘　　要：为了解蒲石河抽水蓄能电站地下厂房区三维地应力情况,现场测试采用空心包体应变计法,共获得3个测点的三维应力数据,并综合考虑树脂弹模和泊松比、应变花位置、柱塞对环氧树脂套筒抗力和环氧树脂套筒与岩壁粘结情况等因素,修正了围压率定弹模计算公式。结果表明,考虑柱塞对环氧树脂套筒抗力等因素影响的弹模修正计算结果比一般应变计弹模修正计算结果大3.8%;该抽水蓄能电站下厂房区域是以构造应力为主的中等偏低的地应力场。In order to study stress state in underground powerhouse area of pumped storage power station of Pushi river,in-situ stress measurement is carried out by hollow inclusion strain gauge method,and three-dimensional stresses at three measuring points are obtained,and the confining pressure formulation is derived minutely considering the effect of elastic modulus and Poisson′ratio of epoxy、the position of strain gauge、resin layer resistance and the felt degree about rock and rosin layer.The results show that the calculation results of formulation(13) is bigger 3.8% than formulation(1).The initial geostress in underground powerhouse area of the pumped storage power station is a middle-and low stress and mainly to tectonic stress.

关 键 词：空心包体应变计 地应力测量 构造应力 弹模修正 

分 类 号：TV743[水利工程—水利水电工程]