基于示踪试验及动态数据的北京小汤山地区地热资源量评价  

Tracer test and geothermal resource quantity evaluation based on dynamic data in the Xiaotangshan area of Beijing

作　　者：杨亚军[1] 丁桂伶 徐巍[1] 李海京[1] 鲁鹤 王雨石[1] 张俊华 王翊虹[1] YANG Yajun;DING Guiling;XU Wei;LI Haijing;LU He;WANG Yushi;ZHANG Junhua;WANG Yihong(Beijing Geological Engineering Survey Institute, Beijing 100048, China)

机构地区：[1]北京市地质工程勘察院,北京100048

出　　处：《水文地质工程地质》2020年第5期196-200,共5页Hydrogeology & Engineering Geology

摘　　要：北京市地热资源丰富,开发历史悠久,用户众多。为科学合理评价地热资源潜力,更好地可持续开发利用地热资源。结合实际开采利用情况,充分考虑了回灌的影响,并以小汤山热田详细勘察资料和长序列的监测数据为基础,采用示踪试验和数值计算方法,给出了典型地热井要保持100 a温度不下降可持续开发利用的地热流体资源量为340 m^3/h;结合地热流体温度监测数据,发现年均净开采量与年均水位下降成对数相关性,且在保持地热流体温度不发生显著变化的前提下,年均水位下降2.0 m,可以保障的最少年均可开采量为365.1×104m^3。结合小汤山热田多年的开发利用资料和经验,提出合理科学可持续的开发利用地热资源,必须坚持“以热定采,以灌定采”模式。Geothermal resources are very rich in Beijing with a long development history and many user companies.In order to scientifically and rationally evaluate geothermal resources,the actual exploitation and utilization and the influence of recharge are fully considered.Based on the detailed survey data and the long series of monitoring data of the Xiaotangshan geothermal field,tracer tests are used to calculate the resources of a typical geothermal heating project in the Xiaotangshan area,and the available resources are estimated as 340 m^3/h under the current temperature kept for 100 years.At the same time,the long-term dynamic monitoring data are used to analyze the whole thermal field in the Xiaotangshan area.The results show that the average annual net production is correlated with the average annual groundwater level decrease,and the geothermal resources are 365.1×104 m^3 while the annual groundwater level decline is controlled at 2.0 m.Combined with the development and utilization data and experience of the Xiaotangshan geothermal field for many years,it is considered that the reasonable and scientific development and utilization of geothermal resources must adhere to the mode of“fixed mining by heat and irrigated mining”.

关 键 词：地热资源 示踪实验 动态监测 资源评价 

分 类 号：P314[天文地球—固体地球物理学]