淮南煤田地热地质特征分析-以顾北煤矿为例
投稿时间:2019-01-08  修订日期:2019-01-08  点此下载全文
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作者单位E-mail
穆金霞 中国煤炭地质总局第一水文地质队 448051222@qq.com 
基金项目:中国地质调查局项目“特殊用煤资源潜力调查评价”(编号:DD20160187)资助。
中文摘要: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;分析了岩性变化对现今地温场分布的影响。
中文关键词:顾北煤矿  盖层  热储层  地温梯度  数值模拟
 
Analysis of Geothermal Geological characteristics in Huainan Coalfield-a case study of Gubei Mine
Abstract: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 to carry out the numerical simulation of Gubei Coal Mine and the heat transfer characteristics of the geothermal field, and draw 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.
keywords:Gubei coal mine  caprock  thermal reservoir  geothermal gradient  numerical simulation
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