Current Situation and Prospect of Coal and Gas Outburst Forecast Technology

摘要

In this paper,the current situation and prospect of coal and gas outburst forecast technology is comprehensively analyzed.At present he drillingmethods for coal and gas outburst forecast such as,drilling yields S,initial velocity of gas emission in drilling hole q are widely used in china at present,andthey make an enormous contribution to the coal and gas outburst forecast of China.But there are some problems that need to be solved,for instance,the drillingmethods need to cost plenty of men power and materials and drill holes for testing.The drilling method is not only very complicated for execution and thereliability is lower,but also influences the excavating velocity and with some latent dangers,in recent years,some new methods are put forward in coal and gasoutburst forecast such as Geo-dynamic division method;On the other hand many geophysical methods are also come forward,such as acoustic emission (AE),electromagnetic radiation (EMR),microseism,infrared,et al.and the EMR method is a promising non-contact forecast method.The EMR method will not beinfluenced by man and the poekety of coal seam of working face and which need no drilling.It is simple to operate and with high veracity,and less influence onproduction.So the expenses for outburst forecast will reduce largely.The non-contact forecast methods will be the prospective development trend with theprogress of technology.