蟠龙抽水蓄能电站地下厂房区初始地应力场反演  

Inversion Analysis of Initial Geostress Field for the Underground Powerhouse Zone of Panlong Pumped-storage Power Station

作　　者：王槐 苏超[2] 吕超洋 王路遥 WANG Huai;SU Chao;LV Chaoyang;WANG Luyao(Chongqing Panlong Pumped Storage Power Plant Co . , Ltd . , Chongqing 401452, China;College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, Jiangsu, China)

机构地区：[1]重庆蟠龙抽水蓄能电站有限公司,重庆401452 [2]河海大学水利水电学院,江苏南京210098

出　　处：《水力发电》2019年第8期42-46,共5页Water Power

基　　金：国家自然科学基金面上基金项目资助(51279053)

摘　　要：岩体初始地应力场是地下工程数值模拟与稳定分析的基础,是地下洞室群围岩变形的主要“荷载”。重庆蟠龙抽水蓄能电站地下厂房区域存在6层泥岩或粉砂质泥岩与泥质粉砂岩,抗压强度较低,属于软岩。结合实测地应力资料,采用有限元法结合多元线性回归分析,反演了工程区域的初始地应力场。结果表明,地应力反演计算值与实测值在量值大小和分布方向上吻合较好,通过反演得到的地应力场是合理可靠的。The initial geostress field of rock mass is a necessary condition for numerical simulation and stability analysis of underground engineering, and it is the main “Load” that results in surrounding rock deformation of underground caverns. There are six layers of mudstone or silty mudstone and siltstone at the underground powerhouse zone of Chongqing Panlong Pumped-storage Power Station. These rock mass are low in compressive strength and belong to soft rock. According to measured geostress data, the inversion analyses on initial geostress field of engineering area are carried out by using finite element method combined with multiple linear regression method. The result shows that the calculated values of geostress agree well with the measured values in magnitude and distribution direction, which proves the rationality and reliability of geostress field obtained by inversion analysis.

关 键 词：地下厂房区 初始地应力场 回归反演 蟠龙抽水蓄能电站 

分 类 号：TV223[水利工程—水工结构工程] TV2719