摘要
针对低透气性煤层瓦斯抽放率低问题,将聚能爆破技术应用于煤层增透中,制定了聚能爆破增透工艺,并将增透工艺分为选址、打钻、装药、封孔、引爆5个步骤.在深孔聚能爆破致裂机理研究的基础上,进一步分析了煤层深孔爆破影响半径及其与装药不耦合系数的关系.以郑州大平煤矿13091工作面为例,对煤层深孔聚能爆破增透瓦斯抽放工艺技术可行性进行了验证.
Based on the gas drainage in low permeability coal bed, the cumulative blasting technology was applied in improving the coal bed permeability, and the technical process of cumulative blasting to improve permeability was formulated. The technical process was divided into location, drilling, loading, sealing and detonation. On the basis of the study of splitting mechanism of coal bed deep-hole cumulative blasting to improve permeability, further, the relation between decoupling coefficient and radius of demolition influence was analyzed. Taking 13091 working face of Daping Mine as an example, the technical feasibility was tested.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2009年第8期1086-1089,共4页
Journal of China Coal Society
基金
国家自然科学基金资助项目(40772098)
教育部科学技术研究重点资助项目(108025)
关键词
聚能爆破
煤层裂隙
增透工艺
瓦斯抽放
cumulative blasting
coal bed fracture
increase permeability technical
gas drainage
