CAJ | 학술논문

目前现场测量岩土导热系数方法需要首先确定回填材料导热系数、埋管管壁的导热系数、埋管管间距、钻孔直径、循环水出入口温度以及加热功率等，这些参数测定的准确性影响岩土导热系数测量的准确性。本文分析了上述因素测量准确性对岩土导热系数测试结果的影响规律。研究表明：回填材料导热系数、埋管管间距和加热功率测量的准确性对岩土导热系数测试结果影响较大；而埋管管壁导热系数、钻孔直径和循环水出入口温度测量值的影响较小。
목전현장측량암토도열계수방법수요수선학정회전재료도열계수、매관관벽적도열계수、매관관간거、찬공직경、순배수출입구온도이급가열공솔등，저사삼수측정적준학성영향암토도열계수측량적준학성。본문분석료상술인소측량준학성대암토도열계수측시결과적영향규률。연구표명：회전재료도열계수、매관관간거화가열공솔측량적준학성대암토도열계수측시결과영향교대；이매관관벽도열계수、찬공직경화순배수출입구온도측량치적영향교소。
Presentground therm alconductivity In situ m easuring m ethods usually need to firstly determ ine the therm al conductivities ofthe backfillm aterial,and the pipe w all,shank spacing,borehole diam eter,the tem perature variation of the circulating w ater, and the heating pow er, etc. The accuracy of the determ ination of these param eters affects the accuracy ofthe m easurem entofthe ground therm alconductivity.Thispaperhasanalyzed the m easurem entaccuracy of the influence of these factors on the ground therm al conductivity m easurem ent. The results show ed that the backfill therm al conductivity, shank spacing, and the heating pow er have greater im pact on the m easured ground therm al conductivity. H ow ever, the pipe w all therm al conductivity, borehole diam eter, the tem perature of the circulating w ater has little effecton the m easured ground therm alconductivity.