摘要
为提高高瓦斯低透气性松软煤层的瓦斯抽采能力,结合适当的钻孔布置开发了一种利用静态破碎技术来压裂煤体、提高煤层透气性的技术方法,并在五阳矿7601掘进工作面进行了实际应用。实践结果表明:深孔定向静态破碎卸压增透技术卸压增透效果显著,比同等条件下的普通钻孔抽采效果成倍提高,为高瓦斯、低透气性松软煤层的瓦斯高效抽采提供了可靠的技术保障。
In this paper, to improve the gas extraction efficiency of soft coal seam with high gas con-tent and low air permeability, combining with proper borehole layout, we have developed a static creaking technique to fracture coal mass and improve seam permeability, and applied to the practice in No.7601 Driving Face of Wuyang Coal Mine. The practice results show that the deep-hole directional static cracking technique has higher depressurization and antireflection effect than that of common ways, which will provide reliable technical guarantee for high efficient gas extraction in soft coal seams with high gas and low air permeability.
出处
《采矿与安全工程学报》
EI
北大核心
2013年第4期600-604,共5页
Journal of Mining & Safety Engineering
基金
国家重点基础研究发展计划(973)项目(2011CB201205)
国家科技支撑计划项目(2012BAK04B07)
国家自然科学基金项目(51074161)
关键词
低透气性煤层
静态破碎技术
定向破碎
卸压增透
瓦斯抽采
low air permeability coal seam
static cracking technology
directional blasting
pressurerelief and permeability improvement
gas drainage
