底板巷水射流网格式割缝强化增透技术研究及应用  

Research and Application of Strengthened Permeability Enhancement with Waterjet Grid Slotting

作　　者：张震[1,2] 林柏泉[1,2] 邹全乐[1,2] 刘厅[1,2] 闫发志[1,2] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221116 [2]煤炭资源与安全开采国家重点实验室,江苏徐州221116

出　　处：《煤炭工程》2014年第8期61-63,共3页Coal Engineering

基　　金：国家重点基础研究发展计划(973计划)资助项目(2011CB201205);国家科技支撑计划课题(2012BAK04B07);国家自然科学基金资助项目(51074161)

摘　　要：针对杨柳矿抽放巷普通穿层钻孔布置掩护煤巷掘进增透效果差、卸压不充分的问题,提出了水射流网格式割缝强化增透技术,并在杨柳矿1063机巷抽放巷实施现场试验,现场试验表明:高压水射流通过在煤层进行割缝形成卸压空间,促使煤体发生膨胀变形,煤体渗透性得到改善,促进瓦斯的解吸流动,提升瓦斯抽采效果;通过割缝孔网格式布置掩护巷道掘进能够实现强化增透及局部高效消突。Aiming at the poor effect of permeability enhancement and insufficient pressure relief in ordinary boreholes grid layout covering coal roadway driving in Yangliu mine drainage roadway, the water jet grid slot improved anti - reflection technology was proposed. In order to investigate the effect of permeability enhancement and gas drainage of water jet rigid slotting, field test was conducted in Yangliu mine 1063 drainage tunnel, and the result show that the high pressure water slotting can form pressure relief space, which leaves the coal mass rheology and the permeability is enhanced, prompting the desorption and transportation of gas, and improving the drainage effect. Grid strengthen permeability enhancement and local effective outburst elimination can be realized through arrangement of slotting boreholes.

关 键 词：底板巷 水射流割缝 消突 穿层钻孔 网格式 卸压增透 

分 类 号：TD712.62[矿业工程—矿井通风与安全]