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,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。
The burnt rock is a special type of metamorphic rock produced by the influence of combustion metamorphism and gas-liquid metamorphism under the complicated conditions coal field fire zone as the main environmental background.At present,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.To promote the study of burnt rock,the mineral composition and coloration of burnt rock were analyzed for sandstone samples.Detection using burnt rock as the medium and its limitations were summarized.The thermal energy recovery of the rock formation and the resource utilization were discussed.Results show that the mineral composition of new burnt rock in the active fire area changed significantly with temperature,and the color depended on iron and manganese oxides with temperature rising.Based on the mineral and thermal characteristics,the burnt rock could be used as a basis for detecting coal fire,but the methods are currently imperfect.The thermal characteristics show that the burnt rock contains a large amount of heat energy that can be used and also are useful after cooling down.
作者
王志宇
史波波
刘鹏
WANG Zhi-yu;SHI Bo-bo;LIU Peng(School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China)
出处
《科学技术与工程》
北大核心
2020年第15期6004-6010,共7页
Science Technology and Engineering
基金
江苏省自然科学基金(BK20170277)
国家自然科学基金(51704283)。
关键词
煤田火灾
烧变岩
探测
热回收
资源
coalfield fire
burnt rocks
detection
heat recovery
resource
作者简介
第一作者:王志宇(1995-),男,汉族,山西阳泉人,硕士研究生。研究方向:矿井火灾防治、煤火防治与热能利用。E-mail:934013730@qq.com;通信作者:史波波(1987-),男,汉族,山西长治人,博士,副教授。研究方向:地下工程通风与火灾防治、热害防治与热能资源化利用。E-mail:shibobo@cumt.edu.cn。
