大型地下厂房水压致裂法地应力测量及地应力场反演分析  

In-situ Stress Measurement and In-situ Stress Field Inversion Analysis by Hydraulic Fracturing in Large-Scale Underground Plants

作　　者：马健 鄢双红 董志宏[3] 周春华[3] 张必勇 MA Jian;YAN Shuang-hong;DONG Zhi-hong;ZHOU Chun-hua;ZHANG Bi-yong(Hubei University of Technology,Wuhan 610072,Hubei Province,China;Yangtze River Survey,Planning and Design Research Co.,Ltd.,Wuhan 430010,Hubei Province,China;Key Laboratory of Geomechanics and Engineering,Ministry of Water Resources,Yangtze River Academy of Sciences,Wuhan 430010,Hubei Province,China)

机构地区：[1]湖北工业大学,湖北武汉610072 [2]长江勘测规划设计研究有限责任公司,湖北武汉430010 [3]长江科学院水利部岩土力学与工程重点实验室,湖北武汉430010

出　　处：《中国农村水利水电》2024年第6期252-258,共7页China Rural Water and Hydropower

基　　金：云南省重大科技专项计划项目(202102AF080001,202002AF080003);中央级公益性科研院所基本科研业务费项目(CKSF2023308/YT,CKSF2023316/YT)。

摘　　要：岩体初始地应力是地下工程研究中的重要内容,依托大型地下厂房工程,采用三维水压致裂法和常规水压致裂法对洞内孔ZK1和地表孔ZK2分别进行地应力测量,获得岩体初始地应力;基于实测数据利用三维数值模拟方法进行地应力场反演计算,获得所需工程区的地应力场分布规律。研究表明:水压致裂法可以有效地获得初始地应力,三维水压致裂法获得的地下应力情况更为准确且可以与垂直孔测试数据互相印证;数值模拟获取的地应力计算值和实测值具有一致性,厂房隧洞布置较为合理且工程区发生岩爆概率较低;现场原位测试结果与回归地应力场分布规律可为工程设计提供有效的科学支撑。The initial in-situ stress of rock mass is an important part of underground engineering research.Relying on the large-scale underground plant project,the three-dimensional hydraulic fracturing method and the conventional hydraulic fracturing method were used to measure the in-situ stress of hole ZK1 in the tunnel and surface hole ZK2 respectively to obtain the initial in-situ stress of rock mass.Based on the measured data,the three-dimensional numerical simulation method was used to calculate the in-situ stress field inversion,and obtained the distribution law of the in-situ stress field in the required engineering area.The results show that the initial in-situ stress can be effectively obtained by the hydraulic fracturing method,and the underground stress obtained by the three-dimensional hydraulic fracturing method is more accurate and can be confirmed by the vertical hole test data.The calculated value of in-situ stress obtained by numerical simulation is consistent with the measured value.The layout of plant tunnels is reasonable,and the probability of rock burst in the engineering area is low.The field in-situ test results and the regression in-situ stress field distribution rules can provide effective scientific support for engineering design.

关 键 词：三维水压致裂法 初始地应力场 反演分析 显著性检验 

分 类 号：TV743[水利工程—水利水电工程]