“三软”煤层中高低压配合长短孔煤层注水应用

Application of "three-soft" coal in medium-high-low pressure assisting long-short coal bed water injection

针对宋楼煤矿井田煤层的现状,采用静压中长孔预注水、煤巷维修浅孔高压预注水等煤层注水方式,从而解决了扩修时巷道顶煤和帮煤冒落问题,减少了扩修安全事故的发生,降低了职工劳动强度。

In the light of the coal bed status of Songlou coal mine,the paper applies static pressure medium-long pre-water injection and high-pressure pre-water injection of coal bed maintenance shallow hole and other coal bed water injection methods.As a result,it solves gallery coal piling and coal dropping in expansion and maintenance problems,reduces the expansion maintenance accidents and lowers down labor strength.