松辽盆地增强型地热系统开发选区评价

干热岩是一种新型清洁能源,其开发利用区的确定十分重要。笔者首先通过对松辽盆地热源、资源量、导热、聚热、地震活动5个方面资料的收集,提出了松辽盆地增强型地热系统开发选区适宜性评价方法;然后选取8项评价因子,利用ArcGIS 10.2平台将松辽盆地划分为26个评价单元,根据打分法和层次分析法(AHP)求取每个因子的权重;最后,对26个选区进行综合评价,将其分成适宜、较适宜、一般适宜、较不适宜和不适宜5个等级。结果表明:松辽盆地干热岩开发适宜区和较适宜区主要集中在盆地中部的大安—大庆一带,确定的适宜选区范围对今后干热岩开发工作具有一定指导作用。

Evaluation of Development Selection for Enhanced Geothermal System in Songliao Basin

The hot dry rock (HDR) is a new clean energy,which is buried in the deep subsurface.It is important to locate the depth and location of HDR before exploration.Firstly,according to the data of heat flow rate,quantity of energy,thermal conductivity,poly heat,seismic activity,a new method is developed to locate the position of HDR in the Songliao basin.Secondly,26 units are defined in the Songliao basin via the platform of ArcGis 10.2.Analytic hierarchy process and expert marking are applied to assemble decision matrix and evaluate the weights of each factors.Finally,26 districts are classified into five levels:suitable,more suitable,general suitable,less suitable and not suitable.The results showed most suitable HDR area is mainly located in Daan-Daqing,the central depression of Songliao basin,which provides a base for the HDR development work in the future.