本文選題：寒區(qū) + 垂直埋管　； 參考：《冰川凍土》2016年05期

【摘要】：寒區(qū)土壤溫度場觀測多采用垂直埋管方式,常用管材有鐵管、PVC管、PPR管、PE管等,在實踐中發(fā)現(xiàn)同一地點不同材質(zhì)測管所測溫度場存在較大差異.為研究幾種常用測溫管材測試值的差異性,2014年11月3日至2015年4月29日對四種材質(zhì)垂直埋管與土壤直埋傳感器的測溫方式進行了現(xiàn)場比對試驗.結果表明:(1)不同材質(zhì)垂直埋管因其物理性質(zhì)的差異,在測溫過程中對溫度場有不同程度的影響,PVC管和PPR管的測溫值分別偏高于相應土層溫度約0.8℃和0.3℃,而鐵管和PE管則分別偏低于相應土層溫度約0.4℃和0.6℃.(2)管材中溫度場數(shù)據(jù)與土壤溫度場數(shù)據(jù)相關性由高到低排序為:鐵管PPR管PVC管PE管.(3)通過最小二乘法,求得鐵管-土壤各層埋深溫度場的轉(zhuǎn)換系數(shù),并得到鐵管-土壤溫度場擬合方程,經(jīng)證實相關性顯著.
[Abstract]:The observation of soil temperature field in cold region mostly adopts vertical buried pipe, and the commonly used pipes are iron pipe, PVC pipe, PPR pipe and PE pipe, etc. In practice, it is found that there are great differences in the temperature field measured by different materials in the same site. In order to study the difference of the measured values of several kinds of commonly used temperature measuring pipes, the field comparison tests between four kinds of vertical buried pipes and soil directly buried sensors were carried out from November 3, 2014 to April 29, 2015. The results show that: (1) due to the difference of physical properties of vertical buried pipes of different materials, the temperature measurement values of PVC pipes and PPR pipes are higher than those of the corresponding soil layer temperature about 0.8 鈩，

本文編號：2085488