中文摘要：

通过工作面压架前后长观测孔的水位变化和工作面的涌水情况,结合工作面的矿压观测结果,认定采动裂隙已波及到第四松散承压含水层,在较高的水压下使四含水通过采动裂隙流入回采面;在此基础上,建立了四含水条件下基本顶周期破断与液压支架相互作用的模型并进行了力学分析。分析表明,四含水的均匀传载特性,使得基本顶上方承受均布的恒定载荷,导致周期来压异常强烈,工作面现有支护技术难以满足要求。

英文摘要：

According to the water table variation in the deep measuring borehole and the water inrush in the coal mining face before and after the powered support jammed by the strata pressure,the paper held that the mining fissures had affected to the No.4 soft pressurized water beating zone in combination with the strata pressure measuring results.At high water pressure,the water in the pressurized zone would flow to the coal mining face with the mining fissures.At this cireumstance,a model on main roof period break...