Suitability Evaluation of Shallow Geothermal Energy on Analytic Hierarchy Process—As an Example in the Central Urban Area of Lanzhou City
Abstract: Based on the actual survey data and the test data, the shallow geothermal energy of Lanzhou city center (the area of 384.7 km2) is evaluated and classified by the way of analytic hierarchy pro- cess (AHP). In the evaluation system, 3 criteria and 10 indicators are established for underground water source heat pump, 3 criteria and 8 factors for soil source heat pump, all levels of judgment matrix are constructed and precision through consistency checking. The results show that the area of underground water source heat pump suitable and suitable for the survey area with a total area of 38.99%, which mainly distributed in the fault basin, Yellow River level I - III and the large parts basin of Heping and Dingyuan that the water rich water content is better, the single well water inflow 1000 - 5000 m3/d, the mineralization degree is less than 1.0 g/L. The soil source heat pump suitable and suitable areas for 68.57% of the total area of the survey area, which mainly distributed on both sides of the Yellow River level III - IV higher-order region and the Loess Hilly transition zone, Heping and Dingyuan basin, which aeration with fine grain layer thickness is greater than 20 - 40 m, groundwater depth more than 25 m. The rest of the survey area is not suitable for the construction of shallow geothermal energy. The research results have an important guiding role for the development and utilization of shallow geothermal energy in the central urban area of Lanzhou city.
文章引用: 魏林森 , 丁宏伟 , 王婷 , 范斌 , 康亮 (2016) 基于层次分析法的浅层地温能适宜性评价分析—以兰州市中心城区为例。 地球科学前沿， 6， 412-421. doi: 10.12677/AG.2016.65043
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