井陉县奥陶系灰岩浅层地温能开发利用潜力研究
投稿时间:2024-01-12  修订日期:2024-03-28  点此下载全文
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作者单位邮编
张永泽 河北省地质矿产勘查开发局国土资源勘查中心(河北省矿山与地质灾害应急救援中心) 050081
基金项目:河北省地质矿产勘查开发局重点项目“革命老区乡村振兴重点县(井陉)生态环境地质调查(13000022P00329410085N)
中文摘要:地下水地源热泵系统是浅层地温能开发利用的一种有效方式。为了研究井陉县奥陶系灰岩所蕴藏的浅层地温能,本次工作在井陉县段庄村所处的河谷内实施热响应试验钻孔一眼,钻孔完成后下入双U型地埋管,并测试了其岩土体物理力学、热物性参数及地温场特征。选取了地下水位埋深、地下水流速、含水层厚度、地层岩性、第四系厚度、导热系数、比热容和地温等8项指标对井陉县进行了地埋管地源热泵适宜性评价,将评价区划分为适宜区、较适宜区和不适宜区。为了更好的验证井陉县奥陶系灰岩所蕴藏的浅层地温能具有开发利用价值,本次工作安装了相关配套应用工程及监测设备,监测了在不同工况条件下的耗能量,通过与普通家用空调耗能量进行对比分析,得出了相关结论。
中文关键词:浅层地温能  层次分析法  适宜性评价  地下水地源热泵  浅层地温能实际应用
 
Research on development and utilization potential of shallow geothermal energy in Ordovician limestone of Jingxing County
Abstract:Groundwater ground source heat pump system is an effective way to develop and utilize shallow ground temperature energy. To investigate the shallow geothermal energy of the Ordovician limestone of Jingxing County, a thermal response test was conducted to drill a borehole in a valley of Duanzhuang village of Jingxing County. After drilling, a double U-shaped underground pipe was lowered to test the physical mechanics, thermal parameters and geothermal field characteristics of the rock and soil. Eight indicators, including underground water level depth, groundwater flow rate, aquifer thickness, formation lithology, fourth system thickness, thermal conductivity, specific heat capacity and ground temperature, were selected to evaluate the suitability of an underground piped ground source heat pump in Jingxing County, and the evaluation was divided into suitable, more suitable and unsuitable areas. In order to better verify that the shallow geothermal energy contained by the Ordovician limestone of Jingxing County is valuable for development and utilization, the project installed related application projects and monitoring equipment to monitor the energy consumption under different working conditions. By comparing with the energy consumption of ordinary household air conditioning, the relevant conclusions are drawn.
keywords:shallow geothermal energy  Analytic hierarchy process  Suitability evaluation  Ground source heat pump  Practical application of shallow geothermal energy
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