限压循环放水技术在倾向开采工作面老空水防治中的应用

Application of pressure-limited circulation water release technology in the prevention and control of old goaf water in inclined mining workings

1358西工作面是开滦钱家营矿业有分公司的首个倾向开采工作面,回采结束后形成积水体积9520 m^(3)、积水标高-613.4 m、积水深7.3 m的积水空间,1358西工作面回采完毕后仍有0.2 m^(3)/min动水,对1359西风道掘进构成水害威胁。通过在1359西风道施工限压循环放水,解除了1359西工作面的水害威胁,保证了矿井安全生产,为今后煤层倾向开采防治水工作积累了宝贵经验。

1358 west working face is the first inclined mining face of Kailuan Qianjiaying Mining Branch,which formed a waterlogged space with a volume of 9,520 m^(3),waterlogged elevation of-613.4 m and waterlogged depth of 7.3 m.After the completion of 1358 west working face,there was still 0.2 m^(3)/min moving water,which posed a water hazard threat to the working face.Through the construction of pressure-limited cycle water release in 1359 west duct,the threat of water damage in 1359 west working face was lifted,which ensured the safe production of the mine and accumulated valuable experience for future water control work in coal seam mining.