煤矿安全2017，Vol.48Issue(9)：145-148,4.DOI:10.13347/j.cnki.mkaq.2017.09.040
高瓦斯矿井极近距离煤层开采复合采空区自然发火综合防治技术
Comprehensive Prevention and Control Technology for Spontaneous Combustion of Compound Goaf in Extremely Close Distance Coal Seams Mining with High Gas
张立国1
作者信息
- 1. 神华神东煤炭集团有限责任公司,陕西榆林719315
- 折叠
摘要
Abstract
Taking high gas and very close distance coal seams mining as the background,the theoretical analysis,numerical simulation and field application are used to study the influence of gas extraction of composite goaf in extremely close distance coal seams on gas migration of goaf and distribution of three-dimensional "three zones".The results show that the gas extraction by ground drilling has a great influence on goaf oxidation zone;the larger of gas extraction amount by ground drilling is,the greater the oxidation zone range is.To choose the appropriate gas extraction amount can realize the effect of gas control,reduce air leakage in goaf,and reduce the scope of "oxidation zone".关键词
高瓦斯/极近距离煤层/自然发火/数值模拟/三带Key words
high gas/extremely close distance coal seams/spontaneous combustion/numerical simulation/three zones分类
矿业与冶金引用本文复制引用
张立国..高瓦斯矿井极近距离煤层开采复合采空区自然发火综合防治技术[J].煤矿安全,2017,48(9):145-148,4.
