摘要
煤炭原位流态化开发是一项改善我国“相对富煤,缺油少气”能源现状的重要举措,以沙帐断褶带A矿区为例,在评价研究区富油煤资源情况基础上,利用层次分析法-熵权法,开展了研究区煤炭流态化开发地质有利区优选。结果表明:(1)研究区富油煤资源量仅为1670.05万t,占研究区总煤炭资源量比例较低,不利于地下原位热解开发,可开展煤炭地下气化开发煤基天然气,以达到充分利用煤炭资源的目的;(2)从煤岩煤质条件、煤层赋存条件、围岩条件以及水文地质条件多角度判识,认为纱帐断褶带A矿区具备煤炭地下气化开发有利地质条件;(3)基于层次分析法-熵权法构建了煤炭地下气化有利区综合评价指标体系,基于6个大类地质指标和20个亚类地质指标,进行了煤炭地下气化有利区优选,划分出研究区煤炭地下气化有利区面积2.54 km^(2),较有利区面积9.04 km^(2),主要分布于研究区的北部。
In-situ fluidized development of coal is an important measure to improve China's energy situation characterized by"relative abundance of coal,scarcity of oil and gas".Takes the A mining area in the Shazhang fault-fold belt as an example,based on the evaluation of the oil-rich coal resources in the study area,a comprehensive evaluation index system for the favorable areas of coal underground fluidized development was constructed using the analytic hierarchy process(AHP)and entropy weight method.The results show:(1)the amount of oil-rich coal resources in the study area is only 16.701 million tons,which accounts for a low proportion of the total coal resources in the study area,and is not conducive to underground in-situ pyrolysis development.It is feasible to carry out underground coal gasification for the development of coal-based natural gas to fully utilize coal resources;(2)through a multi-criteria analysis of coal petrological and quality parameters,coal seam occurrence characteristics,surrounding rock conditions,and hydrogeological settings,it is concluded that mining area A in the Shazhang fault-fold belt exhibits geologically favorable conditions for underground coal gasification development;(3)based on the AHP-entropy weight method,a comprehensive evaluation index system for favorable areas of underground coal gasification was established,and the favorable areas were selected from 6 major geological indicators and 20 sub-indicators.The favorable area for underground coal gasification in the study area is 2.54 km^(2),and the relatively favorable area is 9.04 km^(2),mainly distributed in the northern part of the study area.
作者
黄超
李鑫
张亚斌
HUANG Chao;LI Xin;ZHANG Yabin(School of Geology and Mining Engineering,Xinjiang University,Urumqi 830017,China;Xinjiang Key Laboratory for Geodynamic Processes and Metallogenic Prognosis of the Central Asian Orogenic Belt,Xinjiang University,Urumqi 830017,China)
出处
《煤炭技术》
2025年第6期120-124,共5页
Coal Technology
基金
国家自然科学基金资助项目(42002188)。
关键词
沙帐断褶带
煤炭地下气化
评价指标
层次分析法
熵权法
Shazhang fault-fold zone
underground coal gasification
evaluation indicators
analytic hierarchy process
entropy weight method
