摘要
榆树坡煤矿5#煤层属于带压开采,存在底板突水危险。为评价该煤层底板带压开采危险性,对榆树坡煤矿5#煤层底板岩层进行水压致裂地应力测试,通过岩水应力关系理论计算突水临界指数。通过现场测试、结果计算及分析,榆树坡煤矿5#煤层底板突水临界指数均低于1,底板隔水层性能良好。
The mining process with water pressure in No.5 coal seam of Yushupo Coal Mine had water inrush risk in working face floor.In order to evaluate the risk of the mining process with water pressure, the geostress measurement by hydrofracturing was carried out in floor of No.5 coal seam, the critical index of water inrush were calculated by rock-water stress relation theory.The field test, results calculation and analysis showed that the critical index of water inrush of No.5 coal seam floor was less than1,and the water- resisting layer under floor had high performance.
作者
林旭东
Lin Xudong(Research Institute of Hydrogeology, Xi'an Research Institute of China Coal Technology& Engineering Group, Xi'an, Shaanxi 710054, China)
出处
《中国煤炭》
2019年第6期49-52,共4页
China Coal
基金
中煤科工集团西安研究院有限公司技术创新基金项目(2015(XAYMS16))
关键词
水压致裂
地应力测试
岩水应力关系
突水预测
突水临界指数
hydrofracturing
geostress measurement
rock-water stressrelation
water inrush prediction
critical index of water inrush
