水文地质工程地质2017，Vol.44Issue(5)：158-163,6.DOI:10.16030/j.cnki.issn.1000-3665.2017.05.24
天津地区地层热物性特征及影响因素分析
An analysis of the characteristics of thermal physical properties and their influencing factors in the Tianjin area
摘要
Abstract
In order to analyze the regional distribution and plane distribution regulations of thermal physical parameters of the strata in the Tianjin area,the authors use 88 exploration holes,collect 1 076 soil samples,analyze thermal conductivity,specific heat and thermal diffusion coefficient of formation in the laboratory and carries out statistical analyses of the test data.The results show that the heat conductivity of rock and soil body in the Tianjin area is 1.26 ～ 1.70 W/(m·K),the specific heat capacity ranges from 2 050 to 2 090 J/(kg·K),and the thermal diffusion coefficient varies from 0.45 × 10-6 to 0.74 × 10 6 m2/s.The specific heat of different rocks in the same region is different:clay is the smallest and silt is the biggest.The situation is contrary for the thermal conductivity.The thermal diffusivity and the specific heat capacity are of the same changes.Difference in thermal physical parameters in different parts of the same rocks is not large.In the Tianjin region the heat capacity and the thermal conductivity are roughly in an opposite trend,i.e.,the areas of high value of thermal conductivity is located in the easttern parts of Jixian,Baodi and Ninghe county,the western part of Wuqing,the southern part of Jinghai and the middle part of the Binhai new area;the areas of high value of the specific heat capacity lie mainly in the western part of Jixian,Baodi and Ninghe county,the eastern part of Wuqing,the northern part of Jinghai and the most part of the Binnhai new area.关键词
地热地质/热导率/比热容/热扩散系数/水文地质/地层热物性/天津地区Key words
geothermal geology/thermal conductivity/specific heat/thermal diffusion coefficient/hydrogeology/thermal physical properties/Tianjin area分类
天文与地球科学引用本文复制引用
阮传侠,冯树友,牟双喜,程万庆,赵苏民..天津地区地层热物性特征及影响因素分析[J].水文地质工程地质,2017,44(5):158-163,6.基金项目
国家自然科学基金项目(41502256) （41502256）
