徐州市主城区浅层地温能开发适宜性分区研究

浅层地温能以其分布广、储量大、高效无污染的特点,越来越多地被用于城市建筑供暖与制冷,但制约浅层地温能开发应用的因素很多,主要有地质、水文地质、岩土体热物理性质以及施工条件。目前徐州市浅层地温能处于无序开发状态,造成了极大的资源浪费和环境地质问题。该文重点进行了地埋管地源热泵开发利用适宜性分区研究,通过对徐州市主城区岩土样采集及现场热响应试验,认为在仅考虑热物性条件的前提下,可开展地埋管地源热泵的开发利用,并就其开发利用的钻探成本进行区域适宜性分区,划分为适宜区、较适宜区和不适宜区。

Study on suitability zoning of shallow geothermal energy development in the main urban zone of Xuzhou City

Shallow geothermal energy is increasingly used in heating and cooling for urban buildings due to its characteristics of wide distribution, large reserves, high efficiency and no pollution. But there are many factors restricting the development and utilization of shallow geothermal energy, which mainly include geology, hydrogeology, thermophysical property of rocks and soils as well as construction conditions. Now, the development of shallow geothermal energy in Xuzhou is disordered, which causes extreme waste of resources and serious geological environment problems. The buried tube ground-source heat pump is the research emphasis of this paper. Through the collection of rock and soil samples and on-site thermal response test, the authors found out that under the premise of only considering the thermophysical conditions, all areas are suitable to develop and utilize buried tube ground-source heat pump. So, the major restricting factor of shallow geothermal energy development is the drilling cost. According to the drilling cost, the authors made the regional suitability zoning for buried tube ground-source heat pump, and the study area is divided into the favorable zone, suitable zone and unsuitable zone.