水力割缝技术在提高瓦斯抽采效果中的应用  

Application of Hydraulic Slot Cutting Technology to Improve Gas Drainage Effect

作　　者：陈喜恩[1,2] 崔新益[1,2] 涂冬平 张连军 

机构地区：[1]平顶山天安煤业股份有限公司十三矿,河南平顶山467100 [2]河南理工大学安全工程学院,河南焦作454000 [3]徐州博安科技发展有限责任公司,江苏徐州221008

出　　处：《煤炭工程》2011年第8期34-36,共3页Coal Engineering

摘　　要：为了提高低透气性煤层的瓦斯抽采效率,文章提出了用水力割缝技术扩大钻孔的直接影响范围的思路,研究了水力割缝技术对扰动煤体的体积、表面积、单孔瓦斯抽采量、钻孔影响半径等参数,对比分析了水力割缝技术和普通钻孔抽采技术的数据,结果表明水力割缝技术扰动煤体体积可提高6～16倍,影响煤体表面积可提高5.3～8.8倍,单孔抽采流量可提高2.0～2.5倍。同时水力割缝技术可增大单孔有效影响半径,在一定程度上可减少施工工程量。In order to improve the gas drainage efficiency of the low permeability seam,the hydraulic slot cutting technology was provided to expand the direct influence scope of the borehole and the paper had a study on the hydraulic slot cutting technology disturbed to the seam volume,superficial area,the gas drainage value of a single borehole,the borehole influence radius and other parameters.A comparison analysis was conducted on the data between the hydraulic slot cutting technology and the conventional borehole gas drainage technology.The results showed that the disturbance of the hydraulic slot cutting technology could increase the coal seam volume by 6 ~ 16 times,the superficial area of the seam could be increased by 5.3~8.8 times and the gas drainage value of a single borehole could be improved by 2.0~2.5 times.Meanwhile,the hydraulic slot cutting technology could enlarge the effective influence radius of a single borehole and could reduce the construction engineering on a certain degree.

关 键 词：水力割缝 瓦斯抽采 封孔工艺 注浆 抽采孔影响半径 

分 类 号：TD712[矿业工程—矿井通风与安全]