摘要
为解决伊犁一矿施工过程中遇到的岩层强度低、岩石层间聚合力差、巷道变形、矿山压力影响严重等问题,开展了矿井地应力测试。在矿井+1 137 m石门、3号煤回风上山等地点施工3个地应力测试孔,通过施工导孔、测量孔、安装应力传感器、测试等步骤,利用应力解除法测得3个钻孔的应力解除数据。通过专用软件对数据进行分析,得出了矿井地应力分布规律。结果表明,最大水平应力的方向为NE2.3°~10.1°,最大水平主应力为垂直应力的1.513~1.621倍,最大水平主应力为最小水平主应力的1.255~1.498倍。
To solve the problem of ow formation strength, poor cohesion between layers, roadway deformation and high mine pressure in the mining of No. 1 Mine, ground stress test was conducted, which was located in three places, stress relief data for three holes were measured using the stress relief method by constructing guide holes, measuring holes, installing stress sensors and testing. The data were processed and analyzed by special software, which resulted in a regular distribution of stresses in the mine ground. The results showed that the direction of maximum horizontal stress was NE2.3°~10.1°;maximum horizontal principal stress was 1.513 ~ 1.621 times of vertical stress;maximum horizontal principal stress was 1.255~1.498 times of minimum horizontal principal stress.
作者
任冬冬
王海亮
周忠广
Ren Dongdong;Wang Hailiang;Zhou Zhongguang(No.1 Mine,Xinwen Mining Group(Yili)Energy Development Corporation Ltd.,Yili 835000 China)
出处
《煤炭与化工》
CAS
2020年第5期1-4,8,共5页
Coal and Chemical Industry
关键词
伊犁一矿
地应力分布
应力解除
应力测试
Yili mine
ground stress distribution
stress relief
stress test
