煤矿工作面水害防治技术及安全性评价
Water Hazard Prevention and Control Technology and Safety Evaluation in Coal Mine Working Face
祝建东1
作者信息
- 1. 晋能控股煤业集团马脊梁矿机掘五队,山西 大同 037000
- 折叠
摘要
为降低煤矿工作面底板灰岩的水害威胁,实现其安全开采.本文针对物探、钻探发现的 5 个异常区,采取底板钻探探查和注浆加固相结合的治理措施,施工钻孔48个,完成注浆量 49.85 t;顺层加固钻孔14个,共注水泥52.6 t,并通过应用钻探方法,探查验证和治理这 5 个物探异常区.最后通过分析评价煤层隔水层隔水性能、隔水层厚度、突水系数和水害防治技术,结果表明该工作面可以进行带压安全开采.
Abstract
In order to reduce the water damage threat to the bottom limestone of coal mine working faces and achieve safe mining.This article focuses on the 5 abnormal areas discovered by geophysical exploration and drilling,and adopts a combination of bottom plate drilling exploration and grouting reinforcement measures.48 construction boreholes were drilled,and a grouting volume of 49.85 tons was completed.14 boreholes were reinforced along the layers,with a total of 52.6 tons of cement injected.Through the application of drilling methods,these 5 geophysical anomaly areas were explored,verified,and treated.Finally,by analyzing and evaluating the water resistance performance,thickness,water inrush coefficient,and water hazard prevention technology of the coal seam waterproof layer,the results show that the working face can be safely mined under pressure.
关键词
水害防治技术/钻探/注浆加固治理/安全性评价Key words
water hazard prevention and control technology/drilling/grouting reinforcement treatment/safety evaluation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据