淮南煤田现今地温场特征及热储分析  

Analysis of the Characteristics of Current Geothermal Field and Geothermal Bearing in Huainan Coalfield

作　　者：彭涛[1] 孙建锋 刘凯祥 吴基文[2] PENG Tao1, SUN Jian -feng1 , LIU Kai -xiang1, WU Ji -wen2(1. College of Geology and Environment, Xi＇an University of Science and Technology, Xi＇ an Shaanxi 710054, China;2. School of Earth and Environment, Anhui University of Science and Technology, Huainan Anhui 232001, Chin)

机构地区：[1]西安科技大学地质与环境学院,陕西西安710054 [2]安徽理工大学地球与环境学院,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2018年第2期16-21,共6页Journal of Anhui University of Science and Technology:Natural Science

基　　金：安徽省国土资源科技基金资助项目(2011-K-13);西安科技大学培育基金资助项目(6310216008);西安科技大学博士启动基金资助项目(2016QDJ024)

摘　　要：为了探索深部地温的分布规律和矿井热害防治工作,在系统分析淮南煤田22个井田钻孔井温测井数据的基础上,全面阐述了该区现今地温梯度及各水平地温的分布特征,并对该区地热资源进行了评价。研究表明:淮南煤田现今地温梯度众值介于0.25~0.35℃/km之间,平均地温梯度为0.29℃/km,高于同处华北板块东南缘的淮北煤田;温度与埋藏深度呈明显的正相关性,各个水平地温分布受地温梯度控制明显,其变化特征和地温梯度分布较为相似,整体表现为北高南低、东高西低的特征;根据地热资源评价结果,该区热储层资源总量为2.52×10^(15)kcal,可采热能储量为6.31×10^(14)kcal,合标准煤0.9亿吨,开展地热资源利用能够带来非常可观的经济和社会效益。On the basis of systematically analysing logging temperature data of 22 boreholes of minefield in Huainan Coalfield,this paper comprehensively expounded the current geothermal gradient and the geothermal distribution characteristics at each level in this region and evaluated the geothermal resources in the region. The study showed that the mode of current geothermal gradient in Huainan Coalfield was between 0. 25℃/km and 0. 35℃/km and the average was 0. 29℃/km,which was higher than that in Huaibei Coalfield which is also located in the southeast margin of North China. The temperature and burial depth showed significantly positive correlation and geothermal distribution was obviously controlled by geothermal gradient at each level. The variation of geothermal distribution was similar to the distribution of geothermal gradient,with the temperature in the north higher than that in the south and the temperature in the east higher than that in the west as a whole. According to the evaluation results of geothermal resources,the amount of resources of thermal reservoir in this region was 2. 52 × 10^15 kcal and the reserve of recoverable thermal energy was 6. 31 × 10^14 kcal,equivalent to 0. 9 hundred million tonsof standard coal. The utilization of geothermal resources could bring considerable economic and social benefits.

关 键 词：现今地温场 分布特征 地热资源 热储分析 淮南煤田 

分 类 号：P314[天文地球—固体地球物理学]