基于CO_(2)深孔预裂爆破增透技术研究  

Study on Anti-reflection Technology Based on CO_(2) Deep Hole Presplitting Blasting

作　　者：宋佳林 SONG Jialin(China Coal Technology and Engineering Group Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Safety Technology,Fushun 113122,China)

机构地区：[1]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122 [2]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《煤炭技术》2022年第6期102-104,共3页Coal Technology

基　　金：国家科技重大专项资助项目(2016ZX05067-004-003;2016ZX05045-004-004);中国煤炭科工集团有限公司科技创新基金资助项目(2014QN006)。

摘　　要：针对我国煤矿区煤层透气性差,开展CO_(2)深孔预裂爆破增透技术,研究了爆破应力波在煤体中传播、致裂过程,以及爆生气体在煤体裂隙开裂过程中的传播特性,形成CO_(2)气体爆破煤层增透机理;完善的CO_(2)气体爆破工艺流程;采用CO_(2)爆破致裂后煤层透气性系数提高为原来的27倍,流量提高4.2~6.9倍,瓦斯预抽率提高3.87倍;能大幅度增加煤层瓦斯的涌出量与抽采量,改善煤层瓦斯抽采效果。In view of the poor permeability of coal seams in coal mines in China, anti-reflection technology of CO_(2)deep-hole pre-splitting blasting was developed to study the propagation and cracking process of blasting stress wave in coal body, as well as the propagation characteristics of blasting gas in coal body crack cracking process, thus forming the anti-reflection mechanism of CO_(2)gas blasting coal seam. Perfect CO_(2)gas blasting process flow;the permeability coefficient of the coal seam increased by 27 times, the flow rate increased by 4.2-6.9 times, and the pre-gas extraction rate increased by 3.87 times after CO_(2)blasting was used to crack the coal seam. It can greatly increase the amount of coal seam gas emission and extraction and improve the coal seam gas extraction effect.

关 键 词：低透气性 煤层增透技术 CO_(2) 爆破 

分 类 号：TD713[矿业工程—矿井通风与安全]