高压水射流割缝技术卸压增透机理及应用研究  

Study on Pressure Relief and Transmittance Mechanism and Application of High Pressure Water Jet Slitting Technology

作　　者：李岩 Li Yan(Lu'an Group Yuwu Coal Industry Co.,Ltd.,Shanxi Changzhi 046103)

机构地区：[1]潞安集团余吾煤业有限公司,山西长治046103

出　　处：《山东煤炭科技》2020年第7期81-83,86,共4页Shandong Coal Science and Technology

摘　　要：基于余吾煤业高瓦斯矿井受瓦斯灾害困扰严重难题,提出了高压水射流割缝技术的卸压增透方法,对该技术切割机理、卸压增透机理进行了理论上的可行性分析,结合现场工业性试验对煤样的观察和瓦斯抽采浓度的对比,验证了该技术对煤层的卸压增透效果显著,有利于低透气性煤层的瓦斯预抽采。Based on the serious problem of gas disaster in Yuwu Coal Mine,the pressure relief and permeability increasing method of high pressure water jet slotting technology is proposed.The theoretical feasibility analysis of the cutting mechanism and pressure relief and permeability increasing mechanism of the technology is carried out.Combined with the observation of coal samples and comparison of gas drainage concentration in field industrial test,it is verified that the technology has significant effect on pressure relief and permeability enhancement of coal seam,which is conducive to gas pre drainage in low permeability coal seam.

关 键 词：低透气煤层 水射流割缝 卸压增透 瓦斯抽采 

分 类 号：TD712.6[矿业工程—矿井通风与安全]