Exploration and research on geological abnormal area of No.221303 belt transportation roadway in Xiaojiawa Coal Mine
Wang Qiming;Duan Kai;Zhang Zhihua
以山西锦兴能源有限公司肖家洼煤矿221303胶运顺槽为工程背景,运用瞬变电磁法和普钻探测法对221303胶运顺槽地质异常区开展了探测试验,经过试验数据的处理、分析,并与地质资料进行对比,揭示了肖家洼煤矿221303胶运顺槽地质异常区分布情况。结果表明,查清了221303胶运顺槽裂隙带异常区域富水情况,结合矿井瞬变电磁法和普钻探测法综合效果,验证了矿井瞬变电磁法的可靠性和准确性;利用221303胶运顺槽瞬变电磁物探,发现了221303胶运顺槽迎头正前方至左侧40 m范围内煤层顶板20~40 m层位富水性较强,为裂隙水富集区;根据顶、底板探测钻孔涌水量、水压观测分析,221303胶运顺槽迎头为破碎带,局部富水区不均匀分布,裂隙带成为局部导水通道,判定钻孔出水水源均为顶板裂隙水。
Based on the engineering background of No.221303 belt transportation roadway in Xiaojiawa Coal Mine of Shanxi Jinxing Energy Co., Ltd., transient electromagnetic method and conventional drilling detection method were used to detect the geological abnormal area of No.221303 belt transportation roadway. After processing and analyzing the test data, and comparing with the geological data, the distribution of the geological abnormal area of No.221303 belt transportation roadway in Xiaojiawa Coal Mine was revealed. The results showed that the water abundance situation in abnormal area of the fracture zone of No.221303 belt transportation roadway was found out, and the reliability and accuracy of the mine transient electromagnetic method were verified by combining the comprehensive effect of the mine transient electromagnetic method and the general drilling detection method. Using the transient electromagnetic geophysical prospecting of No.221303 belt transportation roadway, it was found that the 20-40 m layer of the coal seam roof in the range from the front of No.221303 belt transportation roadway to the left 40 m was abundant in water, which was a fracture water enrichment area. According to the observation and analysis of water inflow and water pressure of roof and floor detection drilling holes, the head of No.221303 belt transportation roadway was a fracture zone, and the local water abundance area was unevenly distributed. The fracture zone became a local water conducting channel, and it was determined that the water source of the drilling hole was roof fracture water.
transient electromagnetic method;geological abnormal area;detection;mine water disaster;low-resistance abnormal area
主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会