寒区不同材质垂直埋管测温方式差异性分析

doi:10.7522/j.issn.1000-0240.2016.0153

冰川冻土 ›› 2016, Vol. 38 ›› Issue (5): 1308-1316.doi: 10.7522/j.issn.1000-0240.2016.0153

寒区不同材质垂直埋管测温方式差异性分析

汪恩良^1,2, 包天鹅¹, 刘兴超¹, 张安琪¹

1. 东北农业大学水利与土木工程学院, 黑龙江哈尔滨 150030;
2. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室, 甘肃兰州 730000

收稿日期:2016-05-01 修回日期:2016-07-20 出版日期:2016-10-25 发布日期:2017-01-22
作者简介:汪恩良(1971-),男,河北滦南人,教授,2008年在哈尔滨工业大学获博士学位,从事工程冻土和水工建筑物冻害防治研究.E-mail:HLJWEL@126.com.
基金资助:
国家自然科学基金项目（51541901）；黑龙江省自然科学基金项目（E201405）；冻土工程国家重点实验室开放基金项目（SKLFSE201207）资助

Divergence analysis of the temperatures measured in different material vertical buried pipes in cold regions

WANG Enliang^1，2, BAO Tian'e¹, LIU Xingchao¹, ZHANG Anqi¹

1. School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China;
2. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2016-05-01 Revised:2016-07-20 Online:2016-10-25 Published:2017-01-22

摘要/Abstract

摘要：

寒区土壤温度场观测多采用垂直埋管方式，常用管材有铁管、PVC管、PPR管、PE管等，在实践中发现同一地点不同材质测管所测温度场存在较大差异.为研究几种常用测温管材测试值的差异性，2014年11月3日至2015年4月29日对四种材质垂直埋管与土壤直埋传感器的测温方式进行了现场比对试验.结果表明：（1）不同材质垂直埋管因其物理性质的差异，在测温过程中对温度场有不同程度的影响，PVC管和PPR管的测温值分别偏高于相应土层温度约0.8℃和0.3℃，而铁管和PE管则分别偏低于相应土层温度约0.4℃和0.6℃.（2）管材中温度场数据与土壤温度场数据相关性由高到低排序为：铁管 > PPR管 > PVC管 > PE管.（3）通过最小二乘法，求得铁管-土壤各层埋深温度场的转换系数，并得到铁管-土壤温度场拟合方程，经证实相关性显著.

关键词: 寒区, 垂直埋管, 铁管、PVC管、PPR管、PE管, 差异性分析

Abstract:

Vertically buried pipes are often used to measure temperature field of frozen soil. In this study, iron pipe, PVC pipe, PE pipe and PPR pipe, which are often used in temperature observation, are investigated. It is found that there is significantly different among the temperature fields measured in pipes of different materials. Comparative tests of temperature measurements by the sensors placed inside the four types of pipe and a measurement by the sensors directly inserted into the soil were conducted from November 3, 2014 to April 29, 2015. The measuring depths were 5, 20, 40, 80, 120 and 160 cm. The measured soil temperatures in the pipes and directly in the soil were compared. The comparative analysis showed that:(1) Owing to the difference in physical properties, different materials of the pipes have different influence on the measured temperature field; the measured temperature in PVC pipe and PPR pipe are slightly higher than the true soil temperature about 0.8℃and 0.3℃, respectively, but that in PE pipe and iron pipe are slightly lower than the true soil temperature about 0.4℃ and 0.6℃ respectively; (2) After analysis and comparison, the measured temperatures in iron pipe, PVC pipe, PPR pipe and PE pipe are correlated with the true soil temperature with the order:iron pipe > PPR pipe > PVC pipe > PE pipe; (3) Using the least square method, transfer coefficient from the measured temperatures in iron pipe to the true soil temperature of each layer can be obtained. Thus, a fitted equation can be established between the measured temperatures in iron pipe and the true soil temperature, which is verified having significant correlation.

Key words: cold regions, vertically buried pipe, iron pipe, PVC pipe, PPR pipe, PE pipe, difference analysis

中图分类号:

S152.8

汪恩良, 包天鹅, 刘兴超, 张安琪. 寒区不同材质垂直埋管测温方式差异性分析[J]. 冰川冻土, 2016, 38(5): 1308-1316.

WANG Enliang, BAO Tian'e, LIU Xingchao, ZHANG Anqi. Divergence analysis of the temperatures measured in different material vertical buried pipes in cold regions[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2016, 38(5): 1308-1316.

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寒区不同材质垂直埋管测温方式差异性分析

Divergence analysis of the temperatures measured in different material vertical buried pipes in cold regions

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