【摘要】 以武汉市某大型地源热泵项目两个不同回填工艺施工的地埋管热响应试验孔为研究对象,通过埋设温度传感器和进行长期地温监测,研究和分析地层受施工热扰动后的地温恢复机理和影响因素,论证原始地温恢复快慢与钻孔回填材料的沉淀密实速度密切相关,给出热响应试验孔成孔后的静置时间建议值和岩土初始平均温度确定方法。此外,还对热响应试验后的试验孔地温恢复特性进行研究,为确定两次不同加热功率热响应试验之间的间隔时间提供依据。更多还原

【Abstract】 Temperature sensors are laid along the TRTB and a long term ground temperature observation has been car-ried out after construction of the TRTB. Ground temperature recovery mechanism and its influencing factors have beenstudied. The results showed that the temperature recovery speed has good relationship with the rate for backfilling materi-als to precipitate and compact in the TRTB. Recommended borehole standing time,and the method to obtain initial aver-age temperature of a TRTB have been given. Meanwhile temperature recovery characteristics of the borehole after thermalresponse test have been studied for determine the time interval between two thermal response tests in different heatingpowers in a same borehole.更多还原