关闭煤矿煤炭地下气化地质条件评价体系构建与实践

殷全增; 陈中山; 侯腾飞; 梁杰; 耿丽娟; 李博; 梁君龙; 宋朋印

关闭煤矿煤炭地下气化地质条件评价体系构建与实践

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出版历程
- 发布日期: 2023-04-19

Construction and practice of geological condition evaluation system for underground coal gasification in closed coal mines

摘要

摘要: 为厘清影响关闭煤矿煤炭地下气化的地质因素，以河北省典型关闭煤矿为例，构建科学、系统的地质指标评价体系，针对煤炭地下气化规划到生产的几个阶段，对设立的4个地质一级指标、22个地质二级指标进行了系统分析和量化，建立了地质条件评价体系。采用层次分析和模糊综合评价法，建立了评价指标重要程度矩阵，确定了指标权重，并结合剩余资源量过少、煤层构造极其复杂、涌水量过大等实际情况，对评价结果进行一票否决，最终形成了一套科学、系统的地质指标评价体系。该评价体系在河北省典型关闭煤矿中的应用表明：林南仓煤矿8-1、11、12、14煤层，宣东二井Ⅲ₃、Ⅴ₂煤层，北阳庄矿5煤层，崔家寨矿1、5、6煤层以及显德汪矿1、9煤层比较适宜煤炭地下气化。
- 关闭煤矿 /
- 煤炭地下气化 /
- 地质评价体系 /
- 地质因素 /
- 适宜性
Abstract: In order to clarify the geological factors affecting underground coal gasification（UCG） of closed coal mines and build a scientific and systematic geological index evaluation system, in this paper, we take a typical close coal mine in Hebei Province as a study case to establish an evaluation system of geological conditions. This evaluation system systematically analyzed and quantified 4 first-level geological indexes and 22 second-level geological indexes, corresponding to the several stages from planning to production of UCG. By using analytic hierarchy process and fuzzy comprehensive evaluation method, the importance matrix of evaluation index is established and the index weight is determined. Combined with the actual situation of too little remained resources, extremely complex coal seam structures and excessive water inflow, the evaluation result is one-vote veto, and a set of scientific and systematic geological index evaluation system is finally formed. The application of the evaluation system in typical closed coal mines in Hebei Province（coal seams 8-1, 11, 12, 14 in Linnancang Coal Mine, coal seams Ⅲ₃, Ⅴ₂ in Xuandong No.2 well, coal seam 5 in Beiyangzhuang Mine, coal seams 1, 5, 6 in Cuijiazhai Mine and coal seams 1, 9 in Xiandewang Mine）ｓhows that it is suitable for UCG.
- closed coal mine /
- underground coal gasification /
- geological evaluation system /
- geological factors /
- suitability

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