承压水上开采煤层突水分析及防治技术

 通过对新义煤矿水文地质条件分析、奥陶系灰岩含水层观测孔水位观测、工作面突水水质化验分析比对及工程验证，认为新义煤矿12011工作面突水水源主要为顶板砂岩水，有少量奥陶系灰岩水有少量参与；其导水通道为工作面回采形成的顶板导水裂缝带及底板隐伏构造带。通过采用以疏为主，其他为辅的治理措施，保证了高承压水上回采工作面安全生产。

The cause and control method of the artesian water-inrush in the flexible mine face

By analyzing Hydrogeological Conditions, observing the water-level of the ordovician limestone rockwater and testing the water in new Yima coal, we judge 12011 new Yima coal face roof water burst water main for the water sandstone, ordovician limestone broke into a small amount of water. Its recovery water guide channel for the face to form the roof and floor with hydraulic conductivity crack damage zone. Its water channel guide is the lead roof and floor with water damage with a crack. By using the sparse-based, supplemented by other control measures to ensure normal production flexible coal face.