沿空循环限压放水技术实践

Practice of Circulating Pressure-limited Water Release Technology Along Goaf

针对运河煤矿7300工作面受两侧采空区积水威胁,通过对采空区积水精准探查,合理优化放水孔施工设计,优化排水方案,应用循环限压放水工艺对两侧采空区积水疏放,采用物探、钻探验证疏放效果,消除了老空区积水威胁,取得了良好的效果。

In view of the threat of stagnant water in goaf area on both sides of the 7300 working face of Yunhe Coal Mine,through accurate exploration of stagnant water in goaf area,reasonable optimization of construction design of drainage hole,optimization of drainage scheme,and application of circulating pressure-limited water release technology to release stagnant water in goaf area on both sides,geophysical exploration and drilling are used to verify the drainage effect,the threat of stagnant water in the old goaf area has been eliminated,and good results have been achieved.