摘要
介绍了3个不同方向水压致裂三维地应力测试原理及在寺河煤矿的具体应用,将寺河煤矿水压致裂三维地应力测试结果和二维测试结果进行了比较,二者具有较好一致性。测试结果表明:寺河煤矿地应力以水平主应力为主,属于典型构造应力场类型,最大水平主应力在量值上属于中等应力值应力场,最大主应力方向为近水平东西向。根据最大水平主应力方向,建议主要巷道轴线尽可能沿东西向布置,有利于巷道支护及围岩的稳定。
It introduced three different directions hydraulic fracturing 3 -D in-situ stress measurement principle and it＇s application in Sihe coal mine, hydraulic fracturing 3 -D in-situ stress measurement results and 2 -D measurement results of Sihe coal mine were com-pared ,consistency of two results was better. The results showed that the main in-situ stress of Sihe coal mine is horizontal principal stress, it was typical tectonic stress filed, the value of the maximum horizontal principal stress belong to middle stress value filed, the direction of the maximum horizontal principal stress is nearly horizontal east west. According direction of the maximum horizontal princi-pal stress, roadway should be layout along east west direction, and its benefit for roadway supporting and surrounding rock stability.
出处
《煤矿开采》
北大核心
2017年第4期10-12,31,共4页
Coal Mining Technology
基金
国家自然科学基金煤炭联合基金重点项目(U1261211)
关键词
水压致裂
地应力
三维地应力测量
构造应力场
hydraulic fracturing
in-situ stress
3 -D in-situ stress measurement
tectonic stress filed
