时空效应下不同孔径超前钻孔有效排放半径研究  

Study on effective discharge radius of advanced borehole with different diameters under time-space effect

作　　者：程磊[1,2] 程志楷 连少朋[3] 郝殿 万剑峰[5] CHENG Lei;CHENG Zhikai;LIAN Shaopeng;HAO Dian;WAN Jianfeng(School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China;Henan Collaborative Innovation Center of Coal work Safety and Clean-efficiency Utilization,Jiaozuo Henan,454003,China;Pingdingshan Tian’an Coal Industry Co.,Ltd.,Pingdingshan Henan 467000,China;Science and Technology Research Institute of Jiaozuo Coal Industry Group Co.,Ltd.,Jiaozuo Henan 454002,China;School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China)

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454003 [2]河南理工大学煤炭安全生产与清洁高效利用省部共建协同创新中心,河南焦作454003 [3]平顶山天安煤业股份有限公司,河南平顶山467000 [4]焦作煤业集团有限责任公司科学技术研究所,河南焦作454002 [5]河南理工大学机械与动力工程学院,河南焦作454003

出　　处：《中国安全生产科学技术》2021年第9期72-76,共5页Journal of Safety Science and Technology

基　　金：NSFC—河南联合基金重点项目(U1904210)。

摘　　要：为解决煤矿在施工过程中局部防突问题,进行现场实测并结合数值模拟计算,研究瓦斯排放钻孔影响半径在不同排放时间和不同超前钻孔直径影响下的变化规律。研究结果表明:对于同一孔径的钻孔,在一定时间内影响半径随着时间的增加而增加,不同直径的钻孔呈不同的函数关系;对于不同的孔径,影响半径随着钻孔直径的增加而增加,研究结果可为矿井作业中治理煤与瓦斯局部突出提供重要参考。In order to solve the problem of local outburst prevention in the construction process of coal mine,the field measurement and numerical simulation were combined to study the variation laws of the influencing radius of gas drainage borehole under the influence of different drainage time and different advanced borehole diameters.The results showed that for the boreholes with the same diameter,the influencing radius increased with the increase of time in a certain period of time,and the boreholes with different diameters presented different functional relationships.For the boreholes with different diameters,the influencing radius increased with the increase of borehole diameter.The conclusion provides important reference for the control of local coal and gas outburst in the mine operation.

关 键 词：超前钻孔 排放半径 局部防突措施 数值模拟 

分 类 号：X936[环境科学与工程—安全科学]