| 淮南煤田现今地温场特征 |
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| 引用本文： | 任自强,彭涛,沈书豪,张海潮,徐胜平,吴基文.淮南煤田现今地温场特征[J].高校地质学报,2015,21(1):147-154. |
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| 作者姓名： | 任自强 彭涛 沈书豪 张海潮 徐胜平 吴基文 |
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| 作者单位： | 1. 安徽理工大学地球与环境学院,淮南,232001
2. 安徽省煤田地质局第三勘探队,宿州,234000 |
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| 基金项目： | 国家自然科学基金项目，安徽省国土资源科技项目，高等学校博士学科点专项科研基金 |
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| 摘 要： | 在系统分析淮南煤田大量地面钻孔井温测井数据和井下巷道围岩温度测试数据的基础上,结合58块岩石样品的热导率测试结果,全面阐述了该区现今地温梯度和大地热流的分布特征。研究表明,淮南煤田现今地温梯度的众值介于2.50~3.50℃/hm之间,平均地温梯度为2.9℃/hm;大地热流值变化范围为31.87~83.9 m W/m2,平均热流值为63.69 m W/m2,地温梯度和热流值区均高于淮北煤田;大地热流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,整体表现为中东部高,西部其次,东南部最小的特征。分析揭示,区内现今地温场和热流分布主要受区域地质背景和区内构造格局的控制。
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| 关 键 词： | 现今地温场 地温梯度 大地热流 分布特征 淮南煤田 |
The Distribution Characteristics of Current Geothermal Field in Huainan Coalfield |
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| REN Ziqiang,PENG Tao,SHEN Shuhao,ZHANG Haichao,XU Shengping,WU Jiwen.The Distribution Characteristics of Current Geothermal Field in Huainan Coalfield[J].Geological Journal of China Universities,2015,21(1):147-154. |
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| Authors: | REN Ziqiang PENG Tao SHEN Shuhao ZHANG Haichao XU Shengping WU Jiwen |
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| Institution: | REN Ziqiang;PENG Tao;SHEN Shuhao;ZHANG Haichao;XU Shengping;WU Jiwen;School of Earth and Environmental, An Hui University of Science and Technology;No.3 Exploration Team,Anhui Bureau of Coal Geology; |
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| Abstract: | On the basis of systematically analyzing quantities of logging temperature data of surface boreholes and the measured temperature data of surrounding rocks of the underground roadway in Huainan Coalfield, and the measured thermal conductivity of 58 rock samples, this paper comprehensively investigates the current geothermal gradient and heat flow in this region. The study shows that the mode of current geothermal gradient in Huainan Coalfield is between 2.50°C/hm and 3.50°C/hm with an average of 2.9°C/hm. The heat flow value ranges from 31.87 mW/m2 to 83.9 mW/m2 with an average of 63.69 mW/m2. The geothermal gradient and the heat flow values are higher than that in Huaibei Coalfield. Heat flow is controlled by geothermal gradient obviously. The variation in geothermal distribution is similar to that of the distribution of geothermal gradient and, as a whole, it shows that the highest temperature occurs in the mid-east region, and the second highest temperature occurs in the west. The analysis shows that the distributions of current geothermal field and heat flow in the region are mainly controlled by regional geological background and regional tectonic framework. |
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| Keywords: | current geothermal field geothermal gradient heat flow distribution characteristics Huainan coalfield |
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