立体网格抽采技术在严重突出区域的应用

Application of Three-dimensional Grid Drainage Technology in Region with Serious Outburst Hazard

对于瓦斯含量高、瓦斯压力大、煤层透气性系数低且无保护层可采的严重突出区域,瓦斯抽放是主要的防突措施之一。孟津煤矿11011工作面采用本煤层顺层钻孔与底板巷穿层大面积预抽钻孔相结合的立体网格抽采技术进行卸压,取得了较好的效果,为严重突出区域的瓦斯治理提供了一条有效途径。

For the serious outburst mining area which is with high gas content, high gas pressure,low permeability of coal seam and without protection layer, gas drainage is one of the major outburst-prevention measures. Three-dimensional grid drainage technology was ap- plied on 11011 working face in Mengjin Coal Mine,whose purpose is to release pressure by combining coal seam holes and pre-drilled boreholes through large areas of floor roadway. The application of this technology has achieved good results, and provides an effective way for gas control in regions with serious outburst hazard.