地面钻井抽采远距离保护层卸压瓦斯模拟分析  

Simulation Analysis on Pressure Relief Gas of Long Distance Protective Layer in Surface Drilling Extraction

作　　者：张帅 肖峻峰 朱彭辉 赵言 ZHANG Shuai;XIAO Junfeng;ZHU Penghui;ZHAO Yan(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601

出　　处：《兰州工业学院学报》2023年第2期21-26,共6页Journal of Lanzhou Institute of Technology

基　　金：国家自然科学基金项目(51974006);安徽省课程思政教学团队(2020kcszjxtd17);安徽省高校协同创新项目(GXXT-2019-029)。

摘　　要：为研究地面钻井抽采远距离保护层卸压瓦斯效果,以朱仙庄矿Ⅱ1055工作面为例,运用Fluent模拟研究地面钻井抽采下采空区瓦斯分布状况和钻井的抽采效果。结果表明:高浓度卸压瓦斯会堆积在裂隙带和弯曲下沉带内,采空区中部的瓦斯受地面钻井的影响要小于进、回风侧。随着地面钻井距工作面距离的增加,钻井抽采纯量和抽采浓度都会出现先升高后降低的趋势,钻井布置在回风侧且距工作面60~70 m时抽采效果最佳。In order to study the pressure relief effect of remote protective layer in surface drilling drainage,taking the II 1055 working face of Zhuxianzhuang Mine as an example,FLUENT was used to simulate the gas distribution in goaf and the drainage effect of drilling under surface drilling drainage.The results show that the high concentration of pressure relief gas will accumulate in the fracture zone and bending subsidence zone.The gas in the middle of goaf is less affected by surface drilling than those of the inlet and return air sides.With the increase of the distance from the surface drilling to the working face,both the pure amount of drilling and the extraction concentration of drilling will increase first and then decrease.The best extraction effect is at the drilling arranged on the return air side and 60~70 m away from the working face.

关 键 词：卸压瓦斯 地面钻井抽采 数值模拟 下保护层开采 

分 类 号：X932[环境科学与工程—安全科学]