瓦斯突出预测构造-地球化学理论与方法初探

发布时间：2018-03-29 05:35

本文选题：构造-地球化学　切入点：瓦斯突出　出处：《煤炭学报》2015年06期

【摘要】：基于煤与瓦斯突出预测现状分析,指出煤变形变质过程中元素迁移与聚集的构造-地球化学过程是值得重视的新领域,提出了煤变形构造-地球化学研究的思路、方法、内容及技术流程;通过宿县矿区的实例研究,揭示了挤压构造背景下逆冲推覆构造对不同类型构造煤微量元素迁移聚集的控制作用,并将微量元素分为显著分异和阶段分异2种类型;研究成果显示了构造应力作用下煤变形变质过程中存在元素迁移与聚集的地球化学作用。因此,不同应力-应变环境和构造条件下构造煤中敏感元素迁移与聚集的构造-地球化学机理是重要的研究方向,并通过应力敏感元素指标体系的建立,为煤与瓦斯突出预测提供新的思路、理论与方法。
[Abstract]:Based on the analysis of the present situation of coal and gas outburst prediction, it is pointed out that the tectonic-geochemical process of element migration and accumulation in the process of coal deformation and metamorphism is a new field worthy of attention, and the train of thought and method for the study of coal deformation tectono-geochemistry are put forward. Through the case study of Suxian mining area, the controlling effect of thrust nappe structure on the migration and accumulation of trace elements in different types of tectonic coal is revealed. The trace elements are divided into two types: significant differentiation and stage differentiation. The results show that there are geochemical processes of element migration and accumulation in the process of deformation and metamorphism of coal under tectonic stress. The tectonic-geochemical mechanism of the migration and accumulation of sensitive elements in tectonic coal under different stress-strain environments and tectonic conditions is an important research direction, and through the establishment of stress-sensitive element index system, It provides new ideas, theories and methods for coal and gas outburst prediction.
【作者单位】：中国矿业大学资源与地球科学学院;中国矿业大学煤层气资源与成藏过程教育部重点实验室;河南理工大学资源环境学院;
【基金】：国家自然科学基金重点资助项目(41430317) 国家科技重大专项资助项目(2011ZX05034)
【分类号】：TD713.2

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