淮南煤田地热地质特征分析:以顾北煤矿为例  

Analysis of geothermal geological characteristics in Huainan coalfield:a case study of Gubei coal mine

作　　者：穆金霞[1] MU Jinxia(First Hydrological Team,China National Administration of Coal Geology,Handan 056004,China)

机构地区：[1]中国煤炭地质总局第一水文地质队,河北邯郸056004

出　　处：《中国矿业》2019年第1期85-91,共7页China Mining Magazine

基　　金：中国地质调查局地质调查项目"特殊用煤资源潜力调查评价"资助(编号:DD201601870)

摘　　要：本文以顾北煤矿为研究对象,研究了该区域的地热地质特征,盖层为新生界松散层,热储层为第三纪砂层、太原组灰岩和奥陶系灰岩;采用ANSYS软件对顾北煤矿的地温场特征和大地热流传导进行了二维数值模拟,并绘制了矿井地温等值线图。结果表明:大地热流在矿井中部重新再分配,数值模拟的平均地温梯度3.00℃/hm与系统测温平均地温梯度3.02℃/hm基本吻合,地温梯度整体表现为南北高中间低,地温呈马鞍形分布。此外还分析了岩性变化对现今地温场分布的影响。In this paper,the geothermal geological characteristics of Gubei coal mine are studied.The caprock is a Cenozoic loose layer,and the thermal reservoir is Tertiary sand layer and Ordovician limestone,and Taiyuan formation limestone.Using ANSYS software to carry out the numerical simulation of Gubei coal mine and the heat transfer characteristics of the geothermal field,and drew the temperature isoline map of mine.The results show that the geothermal flow redistributes in the middle of the mine,the average geothermal gradient of the numerical simulation is 3.00 ℃/hm,which is basically consistent with the average geothermal gradient of the system measured at 3.02 ℃/hm,and the overall geothermal gradient is high on both sides and low in the middle and saddle shape distribution.The influence of lithologic change on the distribution of geothermal field is analyzed.

关 键 词：顾北煤矿 盖层 热储层 地温梯度 数值模拟 

分 类 号：TD163.1[矿业工程—矿山地质测量]