煤层钻孔瓦斯抽采与注水降尘一体化应用  

The integration application of gas drainage and water injection in coal seam drilling

作　　者：韦善阳[1,2] 董利辉[3] 郭鹏飞[4] 康怀宇[1,2] WEI Shan-yang DONG Li-hui GUO Peng-fei KANG Huai-yu(Key Lab of Mine Disaster Prevention and Control, Sanhe 065201, China School of Safety Engineering, North China Institute of Science Technology, Sanhe 065201, China School of Resource and Safety Engineering, China University of Mining and Technology （Beijing）, Beijing 100083, China Mining College, Guizhou University, Guiyang 550025, China)

机构地区：[1]矿井灾害防治重点实验室,河北三河065201 [2]华北科技学院安全工程学院,河北三河065201 [3]中国矿业大学(北京)资源与安全工程学院,北京100083 [4]贵州大学矿业学院,贵州贵阳550025

出　　处：《中国矿业》2016年第10期114-117,共4页China Mining Magazine

基　　金：中央高校基本科研业务基金项目资助(编号:3142014012);河北省矿井灾害防治重点实验室开放基金项目资助(编号:KJZH2013K08)

摘　　要：本文应用理论分析、数值模拟和现场试验的方法研究煤层钻孔瓦斯抽采与注水降尘一体化效应,得出在煤层瓦斯压力为0.63MPa,工作面孔隙率0.069,煤层渗透率为1.5×10^(-3)μm^2,在钻孔直径95mm,抽采负压为13kPa时,80m深的瓦斯抽采钻孔有效影响半径为3m,对相同钻孔进行注水降尘48小时后,注水湿润半径为6m。从实际的注水降尘效果可以看出,不同工序下的降尘率均超过了56%,降尘效果明显,实现钻孔"一孔两用"的目标。This paper researched the integration application effects of gas drainage and water injection in coal seam drilling by using theory analysis,numerical simulation and field test.It concluded that the effective influencing radius of 80 meters depth drilling was 3 meters on the condition of 0.63 MPa of gas pressure,0.069 porosity of coal seam,1.5×10-（-3）μm-2 of permeability of coal seam,95 mm of drilling diameter and 13 kPa of extraction pressure.The water injection wetting radius became 6m when injected water into the same drilling 48 hours.As can be seen from the actual effect,dust fall rate were more than56% at different work stages and achieved the aim of＂double efficacies of one drilling＂.

关 键 词：瓦斯抽采 煤层注水 一体化应用 

分 类 号：TD712[矿业工程—矿井通风与安全]