采煤工作面水力预裂处理端头悬顶技术

Technology of Hydraulic Pre-cracking for Treatment of Roof Suspension in Coal Mining Face

为了解决采煤工作面两端头采空区悬顶面积过大,避免造成工作面漏风、采空区内瓦斯氧气积聚及采空区悬顶突然垮落的冒落事故,保证作业人员的人身安全。根据传统的放炮处理采空区悬顶的方法,提出了水力预裂处理两端头采空区悬顶的方法,结果表明水力预裂的方法不仅有效的解决了采空区悬顶的问题,还避免了瓦斯爆炸事故的发生。

In order to solve excessively large suspended roof area of the goaf at both ends of the coal mining face,according to the traditional method of blasting to treat the suspended roof of the goaf,a hydraulic pre-splitting method is proposed to treat the suspended roof of the goaf at both ends.The results show that the hydraulic pre-splitting method not only effectively solves the problem of the suspended roof of the goaf,but also avoided the occurrence of gas explosion accidents.