煤矿安全2019，Vol.50Issue(10)：163-167,5.DOI:10.13347/j.cnki.mkaq.2019.10.038
准南煤田低煤阶煤层气甲烷风化带的确定及影响因素分析
Determination and Analysis of Influencing Factors of Coalbed Methane Weathering Zone in Zhunnan Coalfield
摘要
Abstract
By comparing the low-rank coalbed methane exploration and development data in the two major mining areas of Zhunnan Coalfield, it is found that the methane weathering zone in Liuhuanggou Mining Area is 670 m, while in the Fukang Mining Area is 450 m. The differences of hydrogeological conditions have led to large differences in the methane weathering zones of the two major mining areas. Further research found that the main controlling factor of causing the differences is the presence or absence of the aquifer in the fire areas: because of the existence of the fire areas in Fukang Mining Area, the permeability of the burnt-rock series in the fire zones is strongly modified, becoming the most direct surface water seepage compensation channel. On the one hand, the formed aquifer isolates oxygen effectively and avoids oxidation of the coal seam; on the other hand, the underwater seepage hinders the escape of coal-bed methane effectively and decreases the loss of coalbed methane. As a result, the methane weathering zone is shallower than those areas without fire zones in Liuhuanggou Mining Area.关键词
准南煤田/中-低煤阶煤层气/甲烷风化带/火烧区滞水层/水文地质特征Key words
Zhunnan Coalfield/medium-low rank coalbed methane/methane weathering zone/stagnant water in fire area/hydro-geological characteristics分类
矿业与冶金引用本文复制引用
石浩程,王海超,田继军,韩旭,崔德广,周磊..准南煤田低煤阶煤层气甲烷风化带的确定及影响因素分析[J].煤矿安全,2019,50(10):163-167,5.基金项目
新疆维吾尔自治区自然科学基金资助项目(2018D01C050) （2018D01C050）
