The Theory and Application of Deep Hole Pre-splitting Blasting Improving Gas Extraction

摘要：

　　At present,during extracting damp in loose and low permeability and high gas content coal seam,the conventional extraction methods used are not ideal.In Zhangcun coal mine,we take use of deep-hole controlled pre-splitting blasting technique to promote the permeability of coal seam and gas permeability.Through this method,gas drainage has been greatly improved,the permeability coefficient of the coal seam increases by five times and the capacity of single span gas extraction increases by three times.Therefore,the working environment of the working face is improved effectively and safe production is realized.

关键词： presplitting blasting gas drainage low permeability

作者: Liu Dong Liang Bing Sun Weiji

作者单位: Liaoning Technical University, Fuxin, 123000, China

会议类型: 国际会议

会议名称: International Symposium on Rock Mechanics and Mine Dynamic Disaster Prevention(岩石力学与矿井动力灾害防治国际学术研讨会)

会议地点: 辽宁阜新

会议语种:英文

页码: 300-305

在线出版日期: 2013-07-13（万方平台首次上网日期，不代表论文的发表时间）