中国煤系矿产近现代地质研究进展与走向

Advances and trends of modern research on the geology of coal-measure minerals in China

  • 摘要:
    背景 煤系矿产是我国矿产资源供给安全的重要保障,回顾中国煤系矿产地质研究进展与走向,极具历史意义,也有现实价值,还可能为未来研究提供启迪。
    进展 考证史实,梳理脉络,将研究进展凝练为五个方面。一是煤系矿产地质学理论体系日趋完善,中国煤田地质经典理论体系形成在20世纪后半叶,进入21世纪以来逐渐形成了以煤、煤系气和煤系关键金属为主的煤系矿产地质学理论体系。二是煤起源和成因研究成果推动了国际煤地质学发展,提出新的煤变质作用学说,发现世界上最年轻软褐煤,揭示晚期煤化作用跃变,建立了普通有机岩石学分支学科,全面揭示了煤的形成演化机理。三是煤系矿产聚集分布成矿理论独具特色,建立了多种沉积控煤模式和构造控煤模式,揭示了海域聚煤作用基本格局,发现多种类型煤系关键金属矿床,提出控煤大地构造和煤系关键金属成矿区带划分方案,形成了煤层气地质理论体系。四是特殊用煤资源地质调查与评价成果显著,建立了特殊煤种、优质环保型、洁净煤炭资源地质预测评价方法体系,以及富油煤和煤炭地下气化资源潜力评价方法体系,初步摸查了相关用途煤炭资源家底。
    展望 分析认为,国家重大需求决定煤系矿产地质研究走向,建议未来地质研究聚焦在煤炭资源精准勘查开发、煤系气勘查和有序开发、关键金属矿产勘查开发以及煤炭原位流态化开采地质保障四个方向。同时,也应关注煤系氦气富集机理探索和资源预测方法研究。

     

    Abstract:
    Background Coal-measure minerals (CMMs) play a significant role in ensuring the safe supply of mineral resources in China. Reviewing the advances and trends of research on the geology of CMMs in China holds great historical significance and practical value while potentially providing some insights into subsequent research.
    Advances  Based on textual research and the analysis of logical relations, this study generalized the advances in research on the geology of CMMs in China into four aspects: (1) Increasingly improved geological theory system of CMMs. China's classic theoretical system of coal field geology was formed in the second half of the 20th century, and the geological theory system focusing on coals, coal-measure gas, and coal-measure critical metals has been gradually developed since the 21st century; (2) Research on the origin and genesis of coals, advancing the international coal geology. The advancements include the development of the new coal metamorphism theory, the discovery of the world's youngest soft lignite, the reveal of late-stage coalification jumps, the establishment of the ordinary organic petrology, and the comprehensive ascertainment of the formation and evolutionary mechanisms of coals; (3) The unique CMM accumulation, distribution, and metallogenic theory. The specific outcomes include the establishment of multiple sedimentary and structural coal-controlling patterns, the reveal of the fundamental framework of coal accumulation in sea areas, the identification of deposits of various coal-measure critical metals, and the determination of the division schemes for coal-controlling geotectonic units and the metallogenic zones of coal-measure critical metals, and the development of a geological theory system for coalbed methane; (4) Significant achievements in the geological surveys and assessment of special coal resources. Specifically, the methodological system for the geological prediction and assessment of special coal types and high-quality, eco-friendly, and clean coal resources has been developed, the methodological system for the resource potential assessment of tar-rich coals and underground coal gasification has been formed, and the coal resources for related purposes have been preliminarily investigated.
    Prospects  The analytical results indicate that major national demands determine the trends of research on the geology of CMMs. It is recommended to focus on four aspects in future geological study: the precise exploration and exploitation of coal resources, the exploration and orderly production of coal-measure gas, the exploration and exploitation of critical metals, and the geological guarantee for in situ fluidized coal mining. Additionally, it is necessary to pay attention to the accumulation mechanisms and resource prediction methods for helium in coal measures.

     

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