基于层次分析法的广安主城区地埋管地源热泵适宜性评价

Suitability evaluation of ground source heat pump based on analytic hierarchy process in the main urban area of Guang′an

为了给研究区的浅层地温能开发利用提供地质基础支撑,在研究浅层地温能背景条件的基础上,选取地形坡度、地层岩性、卵石层厚度、地下水位埋深、地下水水质、导热系数、比热容、初始地温等8个评价指标构建了评价指标体系,采用层次分析法,并结合综合指数法和GIS空间分析,进行地埋管地源热泵适宜性评价。将研究区划分为地埋管地源热泵适宜、较适宜、适宜性差三个区;适宜区面积为416.55 km^(2),约占研究区面积的68.47%;较适宜区面积为188.51 km^(2),约占研究区面积的30.98%;适宜性差区面积为3.29 km^(2),约占研究区面积的0.55%。

In order to provide geological foundation support for the development and utilization of shallow geothermal energy in the study area,on the basis of studying the background conditions of shallow geothermal energy,the terrain slope,stratum lithology,thickness of pebble layer,buried depth of groundwater,groundwater quality,thermal conductivity were selected.The evaluation index system was constructed with 8 evaluation indexes including,specific heat capacity and initial ground temperature,and the analytic hierarchy process was used,combined with the comprehensive index method and GIS spatial analysis,to evaluate the suitability of the buried pipe ground source heat pump.The study area is divided into three areas:suitable,relatively suitable,and poor suitable for buried pipe ground source heat pump;the suitable area is 416.55 km^(2),accounting for about 68.47%of the research area;the more suitable area is 188.51 km^(2),accounting for about 30.98%of the research area;the area of poor suitability area is 3.29 km^(2),accounting for about 0.55%of the study area.