基于环境承载力的中深层地热资源评估方法

Evaluation Method of Medium and Deep Geothermal Resources Based on Environmental Carrying Capacity

中深层地热资源在我国分布广泛、资源禀赋良好、储量大。目前地热资源评价方法主要用于评价浅层地热能,并且未考虑环境承载力、开采经济性等因素,难以用于指导中深层地热资源的开发。从多角度量化中深层地热资源开发潜力,将资源环境承载力评价体系应用于中深层地热资源评价。本体系集合地热资源禀赋、环境影响、社会经济技术条件三类因素,综合考虑了热储埋深、温度等因素,并结合层次分析法及统计学方法明确了分级指标和权重赋分。基于提出的中深层地热资源评价体系对典型区域的中深层地热资源进行潜力和远景评估,可为中深层地热资源开发提供理论指导。

Medium-deep geothermal resources are widely distributed in China,with good resource endowment and large reserves.The current geothermal resource assessment methods are mainly used to evaluate shallow geothermal energy,and do not consider factors such as environmental carrying capability and extraction feasibility,making it difficult to guide the development of deep geothermal resources.This paper quantifies the development potential of medium and deep geothermal resources from multiple perspectives and applies the resource and environmental carrying capacity evaluation system to the evaluation of medium and deep geothermal resources.This study system integrates three types of factors including geothermal resource endowment,environmental impact,and socio-economic and technical conditions,takes into account factors such as thermal reservoir depth and temperature,and combines hierarchical analysis and statistics to clarify the grading indexes and weight assignments.Based on the evaluation system of medium-deep geothermal resources proposed in this paper,the potential and prospect of medium-deep geothermal resources in typical regions are evaluated,which can provide theoretical guidance for the development of medium-deep geothermal resources.