淮南煤田地热地质特征分析:以顾北煤矿为例
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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.
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.
引文
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[21]熊亮萍,张菊明.热流的折射和再分配的数学模拟[J].地质科学,1984(4):445-454.XIONG Liangping,ZHANG Juming.Mathematical simulation of refract and redistribution of heat flow[J].Chinese Journal of Geology,1984(4):445-454.
[2]潘国林.安徽省地热资源特征及远景区划[J].中国地质灾害与防治学报,2011,22(2):130-134.PAN Guolin.Geothermal resources characteristics and prospect regionalization in Anhui province[J].Chinese Journal of Geological hazards and Prevention,2011,22(2):130-134.
[3]吴海权,杨则东,疏浅,等.安徽省地热资源分布特征及开发利用建议[J].地质学刊,2016,40(1):171-177.WU Haiquan,YANG Zedong,SHU Qian,et al.Distribution characteristics of geothermal resources and suggestions for exploitation and utilization in Anhui province[J].Geology Journal,2016,40(1):171-177.
[4]王桂梁,曹代勇,姜波,等.华北南部的逆冲推覆、伸展滑覆与重力滑动构造[M].徐州:中国矿业大学出版社,1992.
[5]琚宜文,卫明明,薛传东.华北盆山演化对深部煤与煤层气赋存的制约[J].中国矿业大学学报,2011,40(3):390-398.JU Yiwen,WEI Mingming,XUE Chuandong.Control of basin-mountain evolution on the occurrence of deep coal and coal bed methane in North China[J].Journal of China University of Mining&Technology,2011,40(3):390-398.
[6]庞冯秋,周天健,吴长贵,等.铜陵市朱村地区水文地质条件及地热特征研究[J].地下水,2018,40(3):31-33.PANG Fengqiu,ZHOU Tianjian,WU Changgui,et al.Study on hydrogeological conditions and geothermal characteristics of Zhucun area in Tongling[J].Ground Water,2018,40(3):31-33.
[7]庞菊梅,王树芳,孙彩霞,等.雄县地热田示踪试验的解释及分析[J].城市地质,2011,6(2):12-17.PANG Jumei,WANG Shufang,SUN Caixia,et al.Interpretation and analysis of the tracer test in geothermal field[J].Urban Geology,2011,6(2):12-17.
[8]朱昌淮,魏健.顾北井田小型层滑构造的分类及其发育规律[C]∥中国煤炭学会矿井地质专业委员会2008年学术论坛文集.2008.
[9]彭涛,樊敏,吴佩,等.淮南朱集井田现今地温场特征及其影响因素分析[J].西安科技大学学报,2016,36(2):243-248.PENG Tao,FAN Min,WU Pei,et al.Distribution characteristics and influential factors of present geo-temperature field in Zhuji mine area of Huainan[J].Journal of Xi'an University of Science and Technology,2016,36(2):243-248.
[10]任自强,彭涛,沈书豪,等.淮南煤田现今地温场特征[J].高校地质学报,2015,21(1):147-154.REN Ziqiang,PENG Tao,SHEN Shuhao,et al.The distribution characteristics of current geothermal field in Huainan coalfield[J].Geological Journal of China Universities,2015,21(1):147-154.
[11]谭静强,琚宜文,侯泉林,等.淮北煤田宿临矿区现今地温场分布特征及其影响因素[J].地球物理学报,2009,52(3):732-739.TAN Jingqiang,JU Yiwen,HOU Quanlin,et al.Distribution characteristics and influence factors of presentgeotemperature field in Sulin mine area,Huaibei coalfield[J].Chinese Journal of Geophysics,2009,52(3):732-739.
[12]何争光,刘池洋,赵俊峰,等.华北克拉通南部地区现今地温场特征及其地质意义[J].地质论评,2009,55(3):428-434.HE Zhengguang,LIU Chiyang,ZHAO Junfeng,et al.Characteristics of the present geothermal field in the southern part of the North China Craton and its geological significance[J].Geological Review,2009,55(3):428-434.
[13]张菊明,熊亮萍.有限单元法在地热研究中的应用[M].北京:科学出版社,1986.
[14]于常武,王宇林,李宪杰.平庄盆地北部地温场ANSYS数值模拟[J].黑龙江科技学院学报,2005,15(3):179-181.YU Changwu,WANG Yulin,LI Xianjie.ANSYS-based numeric simulation of ground temperature field in north of Pingzhuang basin[J].Journal of Heilongjiang Institute of Science&Technology,2005,15(3):179-181.
[15]郭江峰,姚多喜.基于ANSYS数值模拟的丁集矿地温研究[J].煤矿安全,2014,57(9):193-196.GUO Jiangfeng,YAO Duoxi.Research on ground temperature of Dingji mine based on ANSYS numerical simulation[J].Coal Mine Safety,2014,57(9):193-196.
[16]张树东,于常武,郭秀杰.大地热流和地温ANSYS数值模拟研究[J].西部探矿工程,2006(12):121-123.ZHANG Shudong,YU Changwu,Guo Xiujie.ANSYSnumerical simulation of geothermal flow and temperature[J].West-China Exploration Engineering,2006(12):121-123.
[17]于常武.平庄盆地地热地质特征及地热勘查远景区研究[D].阜新:辽宁工程技术大学,2002.
[18]徐胜平.两淮煤田地温场分布规律及其控制模式研究[D].淮南:安徽理工大学,2014.
[19]彭涛,张海潮,任自强,等.两淮煤田煤系地层岩石热导率特征[J].高校地质学报,2014,20(3):470-475.PENG Tao,ZHANG Haichao,REN Ziqiang,et al.Characteristics of rock thermal conductivity of coal measure strata in Huainan-Huaibei coalfield[J].Geological Journal of China Universities,2014,20(3):470-475.
[20]熊亮萍,高维安.隆起与拗陷地区地温场的特点[J].地球物理学报,1982,25(5):448-456.XIONG Liangping,GAO Weian.Characteristics of geo-therm in uplift and depression[J].Chinese Journal of Geophysics,1982,25(5):448-456.
[21]熊亮萍,张菊明.热流的折射和再分配的数学模拟[J].地质科学,1984(4):445-454.XIONG Liangping,ZHANG Juming.Mathematical simulation of refract and redistribution of heat flow[J].Chinese Journal of Geology,1984(4):445-454.