煤田火区烧变岩成岩机理与利用
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TD752

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江苏省自然科学基金资助项目(BK20170277),国家自然科学基金资助项目(51704283)。


Formation and Utilization of Burnt Rock in Coalfield Fire Area
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    摘要:

    烧变岩是一种在以煤田火区为主要环境背景的复杂条件下,受燃烧变质作用和气液变质作用等影响产生的变质岩类。目前研究多聚焦于死火区岩层的岩石性质及水文地质意义,而缺乏对活火区烧变岩利用体系的研究。为了促进对烧变岩的研究,本文以砂岩为例分析了烧变岩的矿物成分与呈色,总结了以烧变岩为媒介探测火区的方法及其局限性,最后讨论了烧变岩层的热能回收及资源化利用。结果表明:在活火区新生的烧变岩其矿物成分随温度变化明显,而颜色随温度上升主要由铁、锰氧化物控制;根据矿物特性及热特征,烧变岩可以作为对煤火的探测依据,但探测方法均存在缺陷;热特征也体现了烧变岩蕴含一定体量的热能,可进行回收利用,而冷却后的烧变岩也具有丰富的用途。

    Abstract:

    The burnt rock is a kind of metamorphic rock produced by the influence of burnt metamorphism and pneumatolytic metamorphism under the complicated conditions with the coalfield fire area as the main environmental background. At present, the research focuses on the properties and hydrogeological significance of the rock formations in the extinct fire area, but lacks the research in the active fire area. In order to promote the study of burnt rock, this paper analyzes the mineral composition and coloration of burnt rock by taking sandstone as an example. Then, the detection method of using burnt rock as medium and its limitations are summarized. Finally, the thermal energy recovery of the rock formation and the resource utilization are discussed. The results show that the mineral composition of the new burnt rock in the active fire area changes significantly with temperature, and the color is mainly controlled by iron and manganese oxide with temperature rising. According to the mineral and thermal characteristics, the burnt rock can be used as a basis for detecting coal fire, but the methods are currently defective. The thermal characteristics also show that the burnt rock has a large amount of heat energy, which can be recycled, and also has the use value after cooling.

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王志宇,史波波,刘鹏. 煤田火区烧变岩成岩机理与利用[J]. 科学技术与工程, 2020, 20(15): 6004-6010.
Wang Zhiyu, Shi Bobo, Liu Peng. Formation and Utilization of Burnt Rock in Coalfield Fire Area[J]. Science Technology and Engineering,2020,20(15):6004-6010.

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历史
  • 收稿日期:2019-08-29
  • 最后修改日期:2020-06-14
  • 录用日期:2019-11-11
  • 在线发布日期: 2020-06-24
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