带压开采煤层底板破坏突水规律

Water Inrush Laws of Floor Failure in Coal Seam with Pressure Mining

针对随着开采深度不断加深而带来的承压水威胁进一步增加这一现状,根据具体地质条件,利用相似材料模拟试验以及自主设计的承压水导升模拟装置,观测了承压水在开采不同阶段的导升情况和底板破坏情况,深入研究了从开采伊始到逼近断层时底板从细微破坏到最终导水通道形成的规律;利用对模型进行分层拆解的方法,了解了裂隙的内部发育情况。

Aiming at the present situation that the pressure water threat brought by the continuous deepening of mining depth increases further, according to the specific geological conditions, the lifting of confined water and floor failure in different stages of exploitation were observed by using similar material simulation tests and self-designed confined water lifting simulation device.From the beginning of mining to the time of approaching fault, the laws of floor from slight damage to final water-conducting formation are deeply studied. The internal development of cracks was studied by the method of stratified dismantling of the model.