探测老窑采空区的范围,是煤田地质勘探工作中常遇到的一项任务。我们先后试用了电剖面和电测深法,在条件适宜的情况下,取得一定的效果。近几年来,采用充电法探测积水老窑范围,得到较好的效果,现将其工作情况简述如下: 一、工作原理及应具备的条件充电法一般都是用来探测导电率比围岩大的多的矿体。老窑中积水的导电率,通常比围岩大的多,因此可将充满积水的老窑视为良导体,对老窑水进行充电。在施工时可利用废弃的老窑口或见老窑的钻孔,供入较强的直流电。由于老窑水的导电率高,其电位降相 Detecting the area of ​​the old kiln goaf is a task often encountered in coalfield geological exploration. We have tried the electric profile and electric sounding method, in the case of appropriate conditions, to achieve a certain effect. In recent years, the use of charging method to detect the scope of Sekisui old kiln, get better results, now its work is summarized as follows: First, the working principle and the conditions should be prepared Generally used to detect the conductivity ratio Wai Large rock ore body. The conductivity of old water in stagnant water, usually much larger than the surrounding rock, it can be filled with water old kiln as a good conductor, charging the old kiln water. During construction, the old kiln mouth or the old kiln drilling hole can be used for supplying strong DC power. Due to the high conductivity of old kiln water, its potential phase-down