辽宁工程技术大学学报（自然科学版）2017，Vol.36Issue(9)：897-902,6.DOI:10.11956/j.issn.1008-0562.2017.09.001
综放工作面采空区瓦斯抽采对氧化升温带影响
Influence of gas extraction on oxidation zone in goaf for fully-mechanized top-coal caving face
摘要
Abstract
In order to solve the problems that gas emission quantity is large in fully mechanized caving coal face during extraction stage,and gas extraction caused air leakage which increases the risk of spontaneous combustion in goaf,this paper studied the comprehensive control of spontaneous combustion and gas drainage at working face 5-2S in Hongmiao coal mine by adopting the method of in-situ monitoring combined with numerical simulation.COMSOL software was used to study the influence laws of different extraction amount and different extraction location for oxidation zone.The results show that the change laws of numerical simulation for spontaneous combustion “three zones” in goaf are consistent with in-situ monitoring data.Gas extraction quantity and extraction location are positively correlated with spontaneous combustion risk in goaf.The advancing speed of working face 5-2S increases from 3rn/d to 3.28m/d,and the limit gas extraction quantity increases from 31.71m3/h to 120 m3/h.The position with 10～20m from breaker line of working face is the best extraction position in goaf.关键词
采空区/自燃/瓦斯抽采/氧化升温带/极限抽采量Key words
goaf/spontaneous combustion/gas extraction/oxidation zone/limit gas extraction quantity分类
资源环境引用本文复制引用
周西华,李昂,白刚,宋东平..综放工作面采空区瓦斯抽采对氧化升温带影响[J].辽宁工程技术大学学报（自然科学版）,2017,36(9):897-902,6.基金项目
国家自然科学基金(51274115、51274113) （51274115、51274113）
辽宁省教育厅基金(L2012122) （L2012122）
