Hongyi Coal Mine, Ningxia Hongdunzi Coal Industry Co., Ltd.

针对红一煤矿为新建矿井,还未进行工作面覆岩破坏方面的研究,1150401首采工作面上覆顶板可能会对工作面的正常生产活动造成影响的问题,需要准确探查该区域导水断裂带发育高度。以1150401工作面为工程背景,通过经验公式计算、数值模拟得到导水断裂带发育高度,并与井下仰斜钻孔观测装置得到的实测数据进行对比和相互印证,注重安全考虑,最终确定红一煤矿4号煤层1150401工作面采高1.7m条件下,导水断裂带高度为26.24~34.62m,为矿井安全生产和煤层顶板支护提供了科学依据和参数,同时为类似的工作面实测导水断裂带高度提供了可行性研究方法。

Aiming at the problem that Hongyi Coal Mine is a newly built coal mine, which has not yet conducted research on the aspect of overburden damage of the working face, the overlying roof of the 1150401 first mining working face may affect the normal production activities of the working face, it is necessary to accurately explore the development height of the water conducting fracture zone in this area. Taking the 1150401 working face as the engineering background, the development height of the water conducting fracture zone is obtained through empirical formula calculation and numerical simulation. It is compared and mutually corroborated with the measured data obtained from the downhole upward inclined drilling observation device, focusing on safety considerations. Finally, under the condition of a mining height of 1.7 m in the 1150401 working face of No. 4 coal seam in Hongyi Coal Mine, the height of the water conducting fracture zone is determined to be 26.24-34.62 m. This provides scientific basis and parameters for the safety production of the mine and the support of the coal seam roof. At the same time, it provides a feasible research method for the measured height of the water conducting fracture zone in similar working faces.