中国煤系矿产近现代地质研究进展与走向

Modern and contemporary geological research progress and trends of minerals in coal measures of 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 measures minerals (CMMs) are an important guarantee for the security of mineral resource supply in China. Reviews for the progress and trends of geological research on CMMs of China has both historical significance and practical value, and may also provide enlightenment for future research.Advances By verifying historical facts and sorting out the logical relationship, the progress is condensed into five aspects. One is that the theoretical system of CMMs geology is becoming increasingly perfect. The classic system of coal geology theory in China was formed in the second half of the 20th century, and since the beginning of the 21st century, the theoretical system of CMMs geology, mainly composed of coal, coal measures gas and key metals, has gradually formed. Secondly, the understanding on the origin and genesis of coal has promoted the development of international coal geology, with discovering the world's youngest soft brown coal, revealing the coalification jumps during late coalification stage, proposing the new theory of coal metamorphism, establishing a branch discipline of ordinary organic petrology, and comprehensively revealing the formation and evolution mechanism of coal. Thirdly, the ore-forming theory of CMMs resource accumulation and occurrence has unique characteristics. Multiple sedimentary and structural coal-controlling models have been established, and the basic pattern of coal accumulation in the China’s sea area has been identified. Multiple types of key metal deposits in coal measures have been discovered, and the zoning schemes for coal-controlling tectonics and key metal mineralization zones in coal measures has been proposed, and a theoretical system of coalbed methane geology has been formed. Fourthly, significant achievements have been made in the geological survey and evaluation of special coal resources. The geological prediction and evaluation method systems for special coal types, environmentally friendly and clean coal resources have been established, as well as the evaluation method systems for the potential of oil-rich coal and underground coal gasification resources. Preliminary investigations have been conducted on the coal resources for related purposes. It is considered that major national demands determine the direction of geological research on CMMs resources. Prospects TTherefore, It is suggested that future geological research focus on four directions, including the precise exploration and development of coal resources, exploration and orderly development of coal measures gas, exploration and development of key metal minerals, and geological support for fluidized in-suit mining of coal. At the same time, attention should also be paid to exploring the mechanism of helium enrichment in coal measures and researching resource prediction methods.

     

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