现场热响应试验测定导热系数的影响因素分析

Analysis of influence factors for field heat response test of ground heat conduction coefficient

通过对嘉兴市一试验井分别进行连续15d和6．25d的岩土热响应试验，研究了测试时间、舍弃初始时间、加热功率对埋管深度范围内岩土体导热系数测试的影响。结果表明，测试时间为72-96h时测得的导热系数比较稳定；确定舍弃初始时间时要结合加热功率；加热功率越大，导热系数越小。

Studies the effect of testing time, abnegating initial time and heating power on heat conduction coefficient of ground rock and soil within the depth scope of buried pipe with consecutive 15 and 6.25 days of rock thermal response test on a test well in Jiaxing. The results show that the measured heat conduction coefficient is relatively stable when test time is from 72 to 96 hours. The abnegating initial time should be determined according to the heating power. The larger the heating power is, the smaller the heat conduction coefficient is.