多层采空区综合物探方法研究

随着开采条件的复杂化,煤层会存在2层或2层以上的采空区.为探查多层采空区存在条件下,预防煤层突水事件的发生,通过在山西朔州某矿区4 #煤层与9 #煤层的地面勘探数据分析,研究瞬变电磁法对多层采空区的响应特征.经对数据进行处理,绘制视电阻率平面图、断面图,结合地质资料和钻孔资料,并且与直流电法图件进行比较,可以推断出9 #煤层采空区的富水性强弱.探测结果表明,瞬变电磁法在地面探测多层采空区具有一定的效果,是解决煤矿水文地质问题的一种快捷、高效、安全勘查方法.

Research of comprehensive geophysical prospecting method for multi-layer goaf

With the complexity of mining conditions,there may have 2 layers or more goaf in the coal seam.In order to prevent the coal seam water inrush under the condition of multi-player goaf existing,based on the ground data analysis of 4# and 9# coal seam in some mine of Shuozhou,Shanxi,the paper researches the response characteristics of transient electromagnetic method on multi-layer gob area.After processing the data,drawing the apparent resistivity plan and section profile,combining with the geological data & drilling data and comparing with the DC map,the water abundance degree in the 9# seam goaf can be inferred.The prospecting result indicates,the transient electromagnetic method has a certain effect in ground detecting the multi-layer goaf,and it is a fast,efficient and safe prospecting method to solve mine hydrogeological problems.