中文摘要：

为研究综放工作面在不同采高情况下富水覆岩破坏特征，以胡家河矿首采401101工作面为工程背景，采用物理相似模拟实验的方法，通过三次不同采高（10m、8m、6m）的实验，研究当工作面推进到180m时上覆岩层在不同采高下的破坏状况，导水裂隙带高度能否到达含水层。在此基础上，分析了采动岩体的周期破断和裂隙发展过程，以及支承压力分布的变化。结论可以为胡家河矿首采面提供可靠的采高参照，以避免发生大范围的顶板透水灾害。

英文摘要：

In order to study on the failure features of the watery overburden strata above the fully mechanized top coal caving face under the condition of the different mining height, taking No. 401101 coal mining face of the first coal mining face in Hujiahe Mine as the engineering background, a physical similar simulation experiment method was applied to three mining experiments with different mining heights （ 10m, 8m and 6m）. When the coal mining face was pushed forward to 180m, the overburden strata would be in failure status under the different mining height. Whether the height of the water flowing cracking zone would reach at the water bearing stratum or not, based on the circumstances, the periodical failure and the cracking development process of the mining strata were analyzed and the variation of the roof support pressure distribution was analyzed. The analysis conclusion would provide the references to the reliable mining height of the first coal mining face in Hujiahe Mine in order to the avoid the roof water permeable disaster.