"帷幕内灰岩双含水层"赋存条件及疏干治理

大帷幕区回风斜井下掘时发生突水，分析认为是“上层灰岩含水层”中地下水通过Bo破碎带连通，导致掘进工作面涌水，帷幕形成后与分枝矿体共同的阻水作用形成了“帷幕内灰岩双含水层”的独特水文地质特征。通过实施矿体外围高角度、大密度、大孔深钻孔截水工程，实现了双含水层的疏干，解决了水害威胁及作业面涌水问题。

Deposit Condition of Limestone Double-aquifer in Heavy Curtain and Its Unwatering

When the wind circling tilting well was picking in heavy curtain area limestone water gushed. The analysis considered that the water in upper limestone aquifer is connected through Bo breaking layer, so that it is into the working face. After the heavy curtain was constructed the special hydrological geology character of limestone double-aquifer in heavy curtain was formed with branched mineral mass for common waterproof. Through practicing cutting off water engineering with high angle, high density, deep drill in external of mineral mass the unwatering of double-aquifer can be achieved and the problems of springing water of working face can be solved.