深孔预裂爆破在深井高瓦斯低透气性煤层瓦斯抽采中的应用  

Application of deep hole pre-splitting blasting to gas drainage at deep well and low permeability coal seam

作　　者：刘健[1,2,3] 刘泽功[1,2,3] 高魁[1,2,3] 周伟[1,2,3] 

机构地区：[1]淮南矿业(集团)有限责任公司,深部煤炭开采与环境保护国家重点实验室,安徽淮南232001 [2]安徽理工大学能源与安全学院,安徽淮南232001 [3]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《中国安全生产科学技术》2014年第5期148-153,共6页Journal of Safety Science and Technology

基　　金：国家自然科学基金资助项目(51004003);安徽省教育厅自然科学基金重点项目(KJ2010A091)

摘　　要：为解决潘一东矿深井低透气性高瓦斯煤层瓦斯抽采率低的问题,提出了运用深孔预裂爆破技术提高煤层透气性,进行瓦斯预抽,进而提高瓦斯抽采率,降低煤层突出危险性的方法。通过数值模拟阐述了深孔预裂爆破技术的作用机理,并对潘一东矿应用效果进行了现场考察。研究表明:在低透气性煤层实施深孔预裂爆破技术后,煤层透气性得以提高,平均瓦斯抽采量提高了3倍,有效地提高了瓦斯抽采率,降低了煤体瓦斯压力和含量,从而在一定程度上降低了煤与瓦斯突出的危险性。In order to solve the problem of low gas extraction rate at the low permeability and high gas seam in east-ern area of Panyi deep well mine , the approach of using deep hole pre-splitting blasting technology was presented to increase the coal seam permeability , then improve the gas extraction rate , and lessen outburst danger of coal seam . The mechanism of deep hole pre-splitting blasting technology was briefly described , and the effect of permeability was studied .The research shows that compared with before blasting , the average gas extraction volume by deep hole pre-splitting blasting increased by 3 times, and it improved the gas extraction rate effectively , reduced the coal gas pressure and the content , and lessened the danger of coal and gas outburst to a certain extent .

关 键 词：低透气性 深孔预裂爆破 强化抽采 深井 

分 类 号：X936[环境科学与工程—安全科学]