煤矿古巷灾害及用天然交变电场法探测预防

THE COAL PALAEOADIT DISASTER AND IT'S FORECAST BY THE NATURAL ELECTRIC FIELD METHOD

本文论述了古巷灾害的类型及起因，并介绍了一种在地面探测地下古空、古巷的地球物理方法─－天然交变电场法。该方法除能对古巷进行定位测量外，还能对古巷是不充水做出准确判定。笔者曾应用该方法在我国东北、华北、华东地区的中生代及古生代煤田作了大量工作。经工程验证，探测结果均与实际情况相吻合，使国家避免了巨额的经济损失。

The palaeoruins of a large number firefathers coal minal were distributived in underground of some mine area, it was namcd the palaeoadit or the old mined-out area. Geologic disaster caused by it is called palaeoadit disaster, the direct economic losses caused nearly came up to 1 billion. If the palaeoadit and the old mined-out area can be proved ing to play a great of positive role in prevention, avoid, lessen disaster's loss. This text not only expound type and cause of the palaeoadit, but also introduce a new electromagnetic method detecting underground palaeoadit and old mined-out area-the natural electric field method. Besided fixed position measure the palaeoadit, the method can still not. Author used to apply the method to do a large number of work in Mesozoicera era and paleozoic era coal basin in Northeast, North, East china etc, came true by the engineering, the detecting result coincide with the actual situation, and avoid the great pecuniary losses for countzy.