泗河冲洪积扇松散岩土体地温场自恢复能力研究  

Study on Geothermal Field Recovery Ability of Soil in Alluvial-proluvial Fan in Sihe River

作　　者：胡波[1] 黎逢良 谭秀全[1] 

机构地区：[1]山东省鲁南地质工程勘察院,山东济宁272100

出　　处：《山东国土资源》2017年第7期55-60,共6页Shandong Land and Resources

基　　金：基金项目:山东省国土资源厅;济宁市浅层地温能调查评价;鲁国土科字(2015)002号

摘　　要：泗河冲洪积扇区域分布厚层松散岩土体,浅层地温能开发利用潜力巨大,查明地温场的温度自恢复能力并分析其影响因素,对地源热泵工程换热器的设计具有重要参考价值。笔者开展了多组现场热响应试验,并采用高精度测温线缆,长期监测地埋管换热器周边不同岩性、不同深度岩土体温度变化情况,以查明其变化规律。研究表明:在同种工况下,砂性土的温度恢复能力要远强于粘性土,地温的恢复主要发生在负荷停止的初期。研究区粘性土温度自恢复能力差,岩土体热物性参数、地下水径流条件、埋管循环水温度、气温及变温带深度是影响地温场恢复能力的因素。The rock and soil mass with great thickness distributed in the alluvial proluvial fan in Sihe River. Shal-low geothermal energy has enormous exploitation and utilization potentiality. Finding out the temperature self- recovery capacity of the rock and soil mass and analyzing the influencing factors will provide important reference for engineering design of ground - source heat pumps. Many groups of thermal response tests have been carried out. By adopting high precision temperature measuring cables, changes in the temperature of the rock and soil mass with different lithologies and different depths around the ground heat exchanger have been monitored in a long period. It is showed that the temperature recovery ability of sandy soil is much stronger than that of cohesive soil under the same conditions, and the recovery of soil temperature mainly occurs at the early stage of load stopping. The cohesive soil in the study area has bad temperature self recovery capacity, main factors that influence the geothermal field self - recovery include thermophysical parametersof the rock and soil,runoff conditions of underground water, bur-ied pipe circulating water temperature, air temperature and the depth of temperature changing zones.

关 键 词：松散岩土体 地源热泵 地温恢复 泗河冲洪积扇 

分 类 号：P619.241[天文地球—矿床学]