西安市浅层地温场垂向分布特征及其影响因素分析

Study of Characteristics and influencing factors in a vertical direction of the shallow geothermal field in xi'an city

根据西安市内布设的12口长观孔监测的一年内的月平均地温,绘制不同时期地温随深度变化曲线,系统分析西安市浅层地温场垂向上的分布特征及其影响因素。分析得出:西安市垂向上的分布特征有两种类型:渐变升温型和升温降温交替型。影响其分布的主要因素是地质构造、地下水活动以及岩性。在开发利用过程中要针对浅层地温场不同的变化类型因地制宜地进行调查评价工作,合理开发西安市浅层地温能。

According to the 12 long hole of monthly average ground temperature in a year in xi ＇an city,drawed the curves of ground temperature with depth in different periods,and then systematic analysised of xi ＇an shallow ground temperature field of vertical distribution characteristics and its influencing factors. Analysis： vertical distribution characteristics of xi ＇an shallow geothermal field has two types： Gradient heating type and Heating cooling alternate type. The main factors affecting the activities of xi ＇an region are geological structure,underground water and lithology. In the process of development and utilization on the shallow,for the shallow earth temperature field changes in different types,adjust measures to local conditions to investigate the evaluation work. So we can rationally development of xi ＂ an of shallow geothermal energy.