蔚县矿区北阳庄矿东二采区皮带巷里段突水机理探讨

摘要

A water bursting accident has been happened during Sep 27~Nov 1, 2014 in the E2 winning district, Beiyangzhuang coalmine. The peak water inflow was 2015 m3/h, large amount gangue and fragments burst out at the same time. The water bursting pro⁃cess was long, with water temperature 30℃above, higher 3~4℃than previous two in the coalmine. The contents of Ga++and Mg++in the water are higher than in Ordovician limestone water, and basically consistent with the regional Jixian System limestone water quality type. Through the analyses of the area’s geological and hydrogeological conditions, discussed water bursting mechanism, have consid⁃ered that the main causation of this water bursting is structurally formed water conducted zone has led through the deep part paleokarst subsided column made the Jixian System Wumishan limestone karst water pass through subsided column and water conducted zone in⁃to the coalmine. The study has provided geological basis for mine water control works.%北阳庄矿东二采区皮带巷里段2014年9月27日～11月1日发生突水事故，峰值涌水量达2015 m3/h，同时喷出大量矸石和碎屑，突水过程时间长，水温高达30℃以上，比本矿井前两次突水水温高3～4℃，水中Ga++、Mg++含量也高于奥灰水，且与区域蓟县系灰岩水水质类型基本一致。通过对本区地质和水文地质条件分析，探讨了突水机理，认为本次突水主要是由于构造形成的导压裂隙带导通了深部古岩溶陷落柱，使蓟县系雾迷山岩溶水通过古陷落柱及导压构造裂隙带进入矿井而形成。该研究为矿井防治水工作提供了地质依据。