黑龙江某地热响应试验数值计算模型研究及应用  

Research on numerical modeling of thermal response test and its application in Heilongjiang Province

作　　者：高阳 张延军[1,2] 潘逸轩[1] 袁学兵 GAO Yang;ZHANG Yanjun;PAN Yixuan;YUAN Xuebing(College of Construction Engineering,Jilin University,Changchun 130026,China;Key Laboratory of Groundwater Resource and Environment,Ministry of Education,Jilin University,Changchun 130026,China)

机构地区：[1]吉林大学建设工程学院,长春130026 [2]吉林大学地下水资源与环境教育部重点实验室,长春130026

出　　处：《世界地质》2022年第2期386-393,共8页World Geology

基　　金：国家重点研发计划项目(2019YFC0604905-03);国家自然科学基金项目(41772238);吉林省省校共建计划专项(新能源专项)项目(SXGJSF2017-5-5)联合资助。

摘　　要：根据试验数据,建立了三维岩土热响应试验数值计算模型,并验证了其准确性。在此模型基础上探究了加热功率与回填材料性质对热响应试验结果的影响以及试验对地温场的影响。结果表明:试验持续2 d内温度场影响范围达2.4 m,在试验结束后2 d内岩土体温度恢复速度最快,8 d后基本恢复;回填材料性质对试验有一定影响,而加热功率对岩土综合导热系数基本无影响;在冬季运行工况下,设备每日运行期间最低温度及非运行期最高温度不断降低,经计算U型管每延米换热量为33.7 W/m,运行180 d后温度影响范围达到5.7 m。Based on the test data,the authors establish a three-dimensional thermal response test numerical model and verify its accuracy.Based on this model,the influence of heating power and backfill material properties on the thermal response test results and the influence of the test on the ground temperature field are explored.The results show that the temperature field affects the range of 2.4 m within 2 days of the test,and the rock and soil temperature recovers the fastest within 2 days after the end of the test,and basically recovers after 8 days.The properties of the backfill materials have a certain impact on the test,and the heating power affects the rock and soil.The overall thermal conductivity has basically no effect.In winter operating conditions,the minimum temperature during the daily operation of the equipment and the maximum temperature during the non-operation period continue to decrease.The U-tube heat exchange per linear meter is calculated to be 33.7 W/m,and after 180 days of operation,the temperature influence range reaches 5.7 m.

关 键 词：热响应试验 数值模型 岩土综合导热系数 岩土体温度场 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]