煤炭地下气化地质选区指标体系构建及有利区评价技术

周贺; 吴财芳; 蒋秀明; 王振至

doi:10.3799/dqkx.2021.112

Volume 47 Issue 5

May 2022

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Zhou He, Wu Caifang, Jiang Xiuming, Wang Zhenzhi, 2022. Construction of Geological Selection Index System and Evaluation Technology of Favorable Area for Underground Coal Gasification. Earth Science, 47(5): 1777-1790. doi: 10.3799/dqkx.2021.112

Citation:

Zhou He, Wu Caifang, Jiang Xiuming, Wang Zhenzhi, 2022. Construction of Geological Selection Index System and Evaluation Technology of Favorable Area for Underground Coal Gasification. Earth Science, 47(5): 1777-1790. doi: 10.3799/dqkx.2021.112

Citation:

Zhou He, Wu Caifang, Jiang Xiuming, Wang Zhenzhi, 2022. Construction of Geological Selection Index System and Evaluation Technology of Favorable Area for Underground Coal Gasification. Earth Science, 47(5): 1777-1790. doi: 10.3799/dqkx.2021.112

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Construction of Geological Selection Index System and Evaluation Technology of Favorable Area for Underground Coal Gasification

doi: 10.3799/dqkx.2021.112

Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process, Ministry of Education, China University of Mining and Technology, Xuzhou 221008, China

Received Date: 2021-12-05
Publish Date: 2022-05-25

Abstract

Abstract

In order to clarify the geological factors affecting underground coal gasification (UCG) and construct a scientific and quantitative geological index evaluation system, seven types of geological conditions and 41 geological indexes affecting UCG are systematically analyzed, graded and quantified, and then the geological selection index system is established in the paper. According to the importance of the selected area, each geological index is divided into two categories: basic geological index (A) and key geological index (B). Based on these two categories of indexes, two new quantitative evaluation methods for favorable areas of UCG are proposed, namely fine type (A+B) and general type (B). The weight of geological indexes involved in the two evaluation methods is determined using expert scoring method and analytic hierarchy process (AHP). According to the conditions of resources, mining technology, regional structure and environment, the qualitative classification scheme of evaluation results is determined, and the general steps of favorable area optimization are put forward by comprehensive quantitative evaluation and qualitative classification. Finally, a complete set of evaluation technical system for favorable areas of UCG is formed. The effective application of the evaluation technology system can provide important theoretical support for the scientific site selection and industrialization process of UCG.
- underground coal gasification,
- geological index system,
- fine evaluation method,
- general evaluation method,
- evaluation grade,
- petroleum geology

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References(72)

References

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Construction of Geological Selection Index System and Evaluation Technology of Favorable Area for Underground Coal Gasification

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