生态脆弱区烧变岩研究现状及方向

烧变岩是地质历史时期煤层自燃形成的一种特殊类型的岩体。烧变岩的研究有益于对煤层形成以来所经历的构造运动、古气候和古地理的研究。同时,它也是重要的水文地质勘查对象。50年来,烧变岩的研究多集中于其勘查方法,尤其是较多的论述了其磁性特征与物探确定烧变岩体边界问题。近年来,研究了其水文地质特征。笔者论述了烧变岩的研究现状,提出了烧变岩是一种特殊类型的岩体,空隙、裂隙发育,具有形成富水区的有利条件,是陕北煤炭开发区良好的供水水源。提出了应加强烧变岩内部结构、非均质性特征和空间分布形态的研究,系统开展烧变岩水文地质勘查,评价烧变岩地下水资源,为合理开发利用烧变岩奠定基础。

Research Status and Research Directions of Burnt Rocks in Vulnerable Ecological Region

Burnt rock is a special type of rock formed by coal seam spontaneous combustion during the geological history.The study of burnt rocks is benefit to discuss the tectonic movement,the paleo-climate,and the palaeo-geography that the coal seam experienced since its formation.Meanwhile,burnt rocks are also important hydro-geological exploration targets.The study of burnt rocks mainly focused on surveying methods in the near 50 years,especially,the discussion on magnetic properties and the definition of the burnt rock boundary by geophysical prospecting.The hydro-geological characteristics have been researched recently.This paper addressed the research status and pointed out the research direction of burnt rock including patterns of spatial distribution,development characteristics of fracture,hydro-geological conditions of burnt rocks,and its properties and utilization as building materials.