| A number of shallow geothermal energy projects have been built in Xianyang after 2009,which use groundwater heat pump technology.But due to the lack of research degree of the regional shallow geothermal energy distribution and occurrence, the lack of scientific evaluation of feasibility and suitability, which led to the development of blindness.This paper chooses the Xianyang City as the research area, through the analysis of the geology condition, hydrogeological condition and environment characteristics of shallow geothermal energy development and utilization in underground 200 m, to establish the suitability evaluation system of groundwater heat pump. The system is divided into 3 levels: the target layer, the middle layer, and the basic index layer. Including the lithology, aquifer structure, recharge capacity, corrosion, fouling, and geological disasters. And the Xianyang city groundwater heat pump suitability was evaluated by AHP and comprehensive index method, which is divided into 3 indicators. suitable area, relatively suitable area and unsuitable area. Suitable area located in the floodplain of Weihe River, Fenghe River and the first?second terrace of Weihe River, Fenghe River,area 128.78km2,accounted for 89.36% of assessment area; relatively suitable area located in the posterior portion of the third terrace of Weihe River,area 6.75km2,accounted for 4.68% of assessment area; unsuitable area located in front of three terraces,along the Zhao Cun, Yang Jia Tai area and other geological disasters region, area 4.95km2, accounted for 3.44% of assessment area. The research has great significance to the rational development, Application and scientific planning of shallow geothermal energy in Xianyang. |
PDF Full Text Request