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。
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.
作者
祝建东
Zhu Jiandong(Jinneng Holding Coal Industry Group Majiliang Mining Machinery Excavation Team 5,Datong Shanxi 037000,China)
出处
《山西化工》
CAS
2024年第6期222-224,共3页
Shanxi Chemical Industry
关键词
水害防治技术
钻探
注浆加固治理
安全性评价
water hazard prevention and control technology
drilling
grouting reinforcement treatment
safety evaluation
