综合电法在煤矿积水老空区探查中的应用

Application of Comprehensive Electrical Method in Detection of Old Gob with Water in Coal Mines

从煤矿老空区探测的必要性出发,对比分析了常规电法的特点,强调了综合物探方法的重要性,阐明不同方法可以相互补充、印证,以提高探测效果。以东庞矿9102工作面附近小窑积水采空区探测为例,采用瞬变电磁法和直流电法综合探测,取得了良好效果。实践表明,只要选取合理的探测方法和解释技术,深度250 m内、大面积积水采空区、小范围积水采空巷道探测可靠性均比较高;采用综合电法手段时,只要正确选择技术参数和装置,探测采空区的效果是良好的。

This paper, starting from the essentiality of the detection of old mined-out area, analyzed the characteristics of the conventional electrical methods, pointed out the importance of the comprehensive geophysical prospecting method, and expounded that different methods can complement and confirm each other so as to improve the detection effect. Transient electromagnetic method and D. C. electrical method were used for the detection of a small old mined-out area near 9102 working face in Dongpang Mine, better effect was achieved. The practice indicated that if rational detection methods and explanation technique were selected, the mined-out areas in depth range of 250m and with large amount of accumulated water and the worked -out roadway with small amount of accumulated water can be effectively and reliably detected; when comprehensive electrical method was used, good effect can be achieved in mined-out area detection as long as the technical parameters and device were correctly selected.