利用层次分析法评价东营市浅层地热能适宜性

利用定性、半定量相结合的层次分析法(AHP),建立地埋管换热系统适宜性递阶层次结构模型,在野外试验、室内测试等基础数据的基础上,选取地下水埋藏深度、砂层厚度、成孔难易程度、地面沉降、热扩散率、比热容、综合热导率等7个评价指标,将东营市浅层地热能开发利用划分为适宜区、较适宜区。这是东营地区第一次利用实测数据开展浅层地热能适宜性评价,为今后的合理开发利用提供了科学依据。

Suitability Assessment of Shallow Geothermal Energy in Dongying City Based on Ananalytic Hierarchy Process

By using analytical hierarchy process method (AHP method) which combines qualitative analysis and semi-quantitative analysis together, the hierarchical structure model of the suitability of ground heat exchange system has been established. Based on datas acquired from field and indoor tests, choosing seven evaluation indicators, such as depth of groundwater, depth of sand, difficulty degree of drilling holes, ground subsidence, thermal diffusivity, specific heat capacity and heat conductivity, suitability of shallow geothermal energy in Dongying city can be divided into well suitable region and suitable region. This is the first time to analyze the suitability of shallow geothermal energy by using experimental data in Dongying city. It will provide a scientific basis for reasonable application of shallow geothermal energy in the future.