地质学报2024，Vol.98Issue(3)：680-691,12.DOI:10.19762/j.cnki.dizhixuebao.2023064
基于居里面深度对中国东北部大地热流的研究
Study on heat flow in Northeast China based on the depth of Curie surface
摘要
Abstract
The heat flow is an important parameter that characterizes the Earth's thermal state and is also the most basic data for deep geothermal prediction and evaluation of geothermal resources in a region.However,due to the influence of borehole temperature measurement,there is no measured heat flow value in areas without borehole temperature measurement outside the basin.At present,the relevant heat flow values are obtained by extrapolating based on the measured values of adjacent basins.Due to the close correlation between the depth of the Curie surface and temperature,the surface heat flow value can be studied through the depth of the Curie surface.Based on the existing depth distribution map of residential areas in Northeast China,and combining measured rock thermal conductivity,rock heat generation rate data,and corresponding crustal stratification conditions,this paper calculated the heat flow value and redraw a detailed map of the heat flow distribution in Northeast China.The overall heat flow of the Northeast region is between 42.5 and 95 mW/m2,the high value of heat flow is located in the Wudalianchi and Dunhua-Mishan fault zones,and there are also local high heat flow values within the Songliao basin,the Xiaoxing'anling and Changchun Yanji suture zones.The high heat flow value can correspond one-to-one with the uplifted area of Curie surface,that is,high heat flow at the raised area of the Curie surface but the heat flow in the depression area of Curie surface is relatively low.This study effectively fills the gap in measured heat flow values in Northeast China and provides more accurate parameters for deep geothermal temperature prediction and geothermal resource evaluation in the area.关键词
居里面/大地热流/岩石热导率/岩石生热率/地热资源Key words
Curie surface/heat flow/thermal conductivity of rocks/rock heat generation rate/geothermal resources引用本文复制引用
邱楠生,许晴,朱传庆,宋佳霖,李潇..基于居里面深度对中国东北部大地热流的研究[J].地质学报,2024,98(3):680-691,12.基金项目
本文为国家重点研发计划"变革性技术关键科学问题"项目(编号2021YFA0716000)资助的成果. （编号2021YFA0716000）
