摘要
为解决大同矿区四台矿石炭系太原组首采面8号煤层短距离急剧起伏变化以及工作面顶底板水害问题,在80207工作面范围内实施了坑透、音频电法和槽波等物探工程,共发现13个物探异常区,其中坑透异常区与槽波勘探1号和2号异常区重叠,1号异常区为切眼处断层所致,判定2号异常区为隐伏构造异常。结合上述物探异常区分析结果,施工了26个探查孔,对存在出水现象的2个钻孔进行了注浆堵水与效果检验,经工作面回采验证,探查效果理想,特别是查明了2号异常区存在3条与工作面走向近一致的隐伏断层,最终实现了首采面8号煤层的安全回采。
In order to solve the short-distance rapid undulation of the No.8 coal seam of the first mining face of the Carboniferous Taiyuan Formation in the Sitai Mine of Datong mining area and the problem of water damage on the roof and bottom of the working face,geophysical surveys such as pit penetration,audio frequency electrical method and channel wave were implemented within the scope of the No.80207 working face project,a total of 13 geophysical bnormal areas were found,among which the pit penetration anomaly overlapped with channel wave exploration No.1 and No.2 anomalies,and No.1 anomaly area was caused by a fault at the eye-cut,and No.2 anomaly area was determined to be a hidden structural anomaly.Combining the above analysis results of geophysical abnormal areas,26 exploration holes were constructed,and grouting water blocking and effectiveness testing were conducted on 2 boreholes with water leakage phenomenon.After the verification of the working face stoping,the detection effect was satisfactory.In particular,it found that there were 3 hidden faults in the No.2 anomaly area that are nearly consistent with the strike of the working face.Finally,the safe stoping of the No.8 coal seam of the first mining face was realized.
作者
郭方严
刘师文
谷松
刘科学
陈佃华
田茂江
陈江峰
Guo Fangyan;Liu Shiwen;Gu Song;Liu Kexue;Chen Dianhua;Tian Maojiang;Chen Jiangfeng(School of Resources and Environment,Henan Polytechnic University,Jiaozuo 454003,China;Sitai Coal Mine,Jinneng Holding Group Co.,Ltd.,Datong 037000,China)
出处
《能源与环保》
2023年第11期154-159,165,共7页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家自然科学基金项目(51774110)。
关键词
综合物探
无线电波透视
音频电法
槽波
钻探与回采验证
comprehensive geophysical prospecting
radio wave perspective
audio frequency electrical method
slot wave
drilling and stoping verification
