张飞燕, 韩颖, 吕帅,等.基于残余瓦斯含量的顺层钻孔抽采有效半径阶梯式测定法[J].河南理工大学学报（自然科学版）,2021,40(6):10-16.

ZHANG F Y, HAN Y, LYU S,et al. Staged testing method for gas drainage effective radius of hole drilled along seam based on residual gas content[J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(6):10-16.

基于残余瓦斯含量的顺层钻孔抽采有效半径阶梯式测定法

张飞燕1,2, 韩颖3,4,5, 吕帅3, 刘德宝3, 程虹铭6

1.河南理工大学 安全科学与工程学院，河南 焦作 454000;2.河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基 地，河南 焦作 454000;3.河南理工大学 能源科学与工程学院，河南 焦作 454000;4.中原经济区煤层（页岩）气河南省协同创新中心，河南  焦作 454000;5.深井岩层控制与瓦斯抽采国家安监局科技支撑平台，河南 焦作 454000;6.山西大同大学 教学实验与实训中心，山西  大同  037003

摘要:为确定瓦斯抽采合理钻孔间距，有效减少或消除抽采空白带，基于瓦斯抽采相关标准与行业规范，以突出煤层采煤工作面瓦斯含量临界值、采煤工作面回采前煤体可解吸瓦斯含量、采煤工作面瓦斯抽采率和预抽率作为抽采达标的4项基本指标，根据4项基本指标计算得出残余瓦斯含量最小值，将其作为考察指标，对顺层钻孔瓦斯抽采有效半径测定方法进行探索，提出阶梯式测定法。使用该测定法对山西霍尔辛赫煤业有限责任公司3号煤层瓦斯抽采有效 半径进行现场测试，同时基于含瓦斯煤的流固耦合动态模型对测试结果进行数值模拟验证。结果表明：阶梯式测定法现场测试结果与数值模拟结果基本吻合，在该矿合理预抽期内，抽采有效半径为1.52 m，合理钻孔间距为2.50 m。研究结果对于完善瓦斯抽采有效半径测定方法、确保瓦斯抽采达标具有参考作用。

关键词:残余瓦斯含量;顺层钻孔;瓦斯抽采;有效半径;阶梯式测定法

doi:10.16186/j.cnki.1673-9787.2020030042

基金项目:国家自然科学基金资助项目（51974108，51404093）；河南省高校基本科研业务费专项资金资助项目（NSFRF210315 ）；河 南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地开放基金资助项目（WS2012A09， WS2017B11）； 国家安全生产监督管理总局安全生产重大事故防治关键技术科技项目（henan-0025-2015AQ，henan-0007-2015AQ）；河南 省博士后科研项目（001701014）；河南理工大学博士基金资助项目（B2008-15，B2012-093）

收稿日期:2020/03/12

修回日期:2020/06/23

出版日期:2021/11/15

Staged testing method for gas drainage effective radius of hole drilled along seam based on residual gas content

ZHANG Feiyan1,2, HAN Ying3,4,5, LYU Shuai3, LIU Debao3, CHENG Hongming6

1.College of Safety Science and Engineering， Henan Polytechnic University， Jiaozuo  454000 ， Henan， China;2.State Key Laboratory Cultivation Base for Gas Geology and Gas Control， Jiaozuo  454000 ， Henan， China;3.School of Energy Science and Engineering， Henan Polytechnic University， Jiaozuo  454000 ， Henan， China;4.Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region （ Henan Province）， Jiaozuo  454000 ， Henan， China;5.State Administration of Work Safety Technology Platform of Deep Mine Strata Control and Methane Drainage， Jiaozuo  454000 ， Henan， China;6.Teaching Center of Experiment and Practice， Shanxi Datong University， Datong  037003 ， Shanxi， China

Abstract:In order to reasonably determine the spacing of gas drainage boreholes and effectively reduce or eliminate the drainage blank zone ， based on the relevant standards and industry specifications ， the critical value of gas content in outburst coal seams ， the amount of desorbed gas from coal before mining ， gas pre-drainage and drainage efficiency of coal face were taken as four basic indexes to determine whether the drainage standard shave been realized in this paper， then the minimum value of residual gas content calculated according to four indexes was selected as the inspection index to explore the new technology for determining the effective radius of hole drilled along seam ，and the staged method was put forward. Secondly ， the effective radius of No.3 coal seam in Huoerxinhe coal mine was measured by using the staged method ， and numerical simulation was carried out to verify the test results based on the fluid-solid coupling dynamic model. The results showed that the values of field tests based on staged testing method and that of numerical simulation were in good agreement with each other ， the new testing technique of effective radius was feasible ，the effective radius was 1.52 m and the spacing of borehole arrangement was 2.50 m during the reasonable pre-drainage period. The conclusion had reference significance for improving the method of measuring effective radius and for ensuring the drainage effect.

Key words:residual gas content;hole drilled along seam;gas drainage;effective radius;staged testing method

 基于残余瓦斯含量的顺层钻孔抽采有效半径阶梯式测定法_张飞燕.pdf