摘要
为探究祁东矿8_(2)31工作面采后底板破坏影响范围,采用数值模拟及地质雷达探测法,对8_(2)31工作面底板破坏特征进行研究。结果表明,工作面底板破坏起始于工作面前方一定范围,随着工作面推进,煤层底板破坏深度不断增加,同时,回采巷道受掘进和采动的双重扰动,其底板破坏范围稍大于工作面底板破坏范围;8_(2)31工作面底板破坏深度数值模拟结果与地质雷达探测基本一致,其深度约为23.9~26.28 m;证明了应用地质雷达对底板破坏探测结果的可靠性,减少了底板破坏探测工作量,为相近煤层开采底板破坏超前预探提供了参考。
In order to study the influence range of floor failure after mining in the 8_(2)31 working face of Qidong Mine,the numerical simulation and geological radar methods were used to study the characteristics of floor failure in the working face.The results show that the floor failure of the working face starts at a certain range in front of the working face.With the advance of working face,the failure depth of coal floor increases continuously.At the same time,the entry is influenced by excavation and mining and the failure range of its floor is slightly greater than that of the working face floor.The numerical simulation results of floor failure depth of 8_(2)31 working face are basically consistent with those of the geological radar methods,the depth is about 23.9~26.28 m.Based on this,it is proved that the application of geological radar to floor failure detection results is reliable,the workload of the floor failure detection is reduced,and the reference is provided for the floor failure detection in advance in similar coal seam mining.
作者
付翔
杨勇
史文豹
FU Xiang;YANG Yong;SHI Wenbao(Qidong Coal Mine,Anhui Hengyuan Coal&Electric Company Limited,Suzhou 234000,China;School of Mining Engineering,Anhui University of Science&Technology,Huainan 232001,China)
出处
《建井技术》
2022年第1期30-34,共5页
Mine Construction Technology
关键词
底板
破坏深度
数值模拟
地质雷达
mining floor
failure depth
numerical simulation
ground penetrating radar
