首采工作面矿压显现模拟试验研究

基于相似模拟理论，对黄玉川煤矿4号煤4101首采工作面矿压显现进行了相似模拟研究，确定首采面模拟工作面共推进192 m，经历1次初次来压和8次周期来压的来压步距，同时得出整个来压期间的增载系数为1.32，在初次来压、第6次及第8次周期来压时靠煤壁侧顶板岩层的断裂线延伸至支架上方，造成支架载荷急剧增加现象。试验研究为首采面正式回采后的安全开采提供技术保障。

Research on simulation test of strata behavior on first mining face

Based on analog simulation theory，similar simulation research was carried out on strata behavior on 4101 first mining face of Huangyuchuan Coal Mine. It was determined that，initial mining surface simulation working face has advanced 192 m，and the pressure intervals of 1 first weighting and 8 periodic weightings were also determined，at the same time，it was concluded that load coefficient in the whole period is 1.32. When first weighting，No.6 and No.8 periodic weightings happen，strata fracture line has extended to the upper part of supports near coal wall，load of support is increasing sharply. These result can provide technical basis for safety production after the normal coal winning of first coal mining face.