Distribution Characteristics of Current Geothermal Field and Terrestrial Heat Flow in Huaibei Coalfield
Peng Tao
Wu Jiwen
Ren Ziqiang
Xu Shengping
Zhang Haichao
Abstract：The problem of high temperature in Huaibei coalfield is going to be more and more terrible,however,the research on the characteristics of geothermal field and the distribution of terrestrial heat flow in this region is extremely rare.On the basis of systematical analysis of temperature logging data of surface boreholes and the tested data of temperature of surrounding rock of underground roadway in Huaibei coalfield,combining the tested results of thermal conductivity of 72 rock samples,the cur-rent geothermal gradient and terrestrial heat flow in this region are comprehensively expounded.The study shows that the mode of current geothermal gradient in Huaibei coalfield is between 1.80 and 2.80 ℃/hm and the average is 2.42 ℃/hm.The terrestrial heat flow value ranges from 39.52 to 74.12 mW/m2 and the average is 55.72 mW/m2 .The geothermal gradient and the terrestrial heat flow value are lower than those in Huainan coalfield and other basins in North China.Terrestrial heat flow is controlled by geothermal gradient obviously.The variation of geothermal distribution is similar to the distribution of geothermal gradient and it shows as a whole that the temperature in the south is higher than that in the north and the temperature in the west is al-so higher than that in the east.The analysis shows that the distribution of current geothermal field and heat flow in the region is mainly controlled by regional geological background and regional tectonic framework.
Keywords：geothermal fieldsgeothermal gradientterrestrial heat flowstructural controlHuaibei coalfield
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 1083-1092 )