中国干热岩资源主要赋存类型与成因模式

 干热岩资源作为地热资源重要的组成部分,以其清洁、稳定、可再生的资源优势及巨大的高温发电潜力,越来越受到关注。中国自20 世纪90 年代开始对干热岩资源进行调查研究,并在不同地质背景条件预测或勘查到干热岩资源,然而至今仍未对干热岩资源的赋存形式进行分类及开展干热岩资源成因机制研究,阻碍了中国干热岩资源的调查与精细潜力评价。在阐述干热岩资源赋存的指标参数的基础上,通过对国内外已发现干热岩资源的成因模式分析,结合中国地壳结构背景,将中国干热岩资源的赋存类型分为高放射性产热型、沉积盆地型、近代火山型和强烈构造活动带型。并在此基础上研究了不同类型干热岩资源的成因机制,比较不同类型干热岩资源成因机制之间的差别,提出干热岩资源赋存的有利前景区。

Research on the occurrence types and genetic models of hot dry rock resources in China

As a significant part of geothermal resources, hot dry rock (HDR) resources have attracted increasing attention due to their clean, stable, reproducible characteristics and huge potential of high temperature geothermal power generation. China started research on HDR resources since the 1990s, and has successfully explored and predicted quite a few HDR resources deposits. However, until now, we have not classified HDR resources and studied the genetic mechanisms of their occurrence, which hinders the exploration and precise potential estimation of HDR resources in China. Based on the geological indicators of the occurrence of HDR resources and genetic analysis of them in the world and the crustal structure in China, this paper divides the HDR resources into four types, i.e. the high radioactive heat production type, the sedimentary basin type, the modern volcano type and the intraplate active tectonic zone type. The genetic mechanisms of different types of HDR resources are analyzed and compared, and the prospect regions of HDR resources are proposed, which may provide references for precise potential estimation of the HDR resources in China.