安家庄井田地温分布特征及其影响因素  

Distribution Characteristics and Influencing Factors of Geothermal Temperature in Anjiazhuang Mine Field

作　　者：吕新 刘燕 LYU Xin;LIU Yan(Gansu Provincial Coal Geological Exploration Institute,Lanzhou 730000,China;Institute of Soil and Water Conservation Science in Gansu,Lanzhou 730000,China)

机构地区：[1]甘肃煤炭地质勘查院,兰州730000 [2]甘肃省水土保持科学研究所,兰州730000

出　　处：《煤炭技术》2020年第11期105-108,共4页Coal Technology

摘　　要：通过分析、处理安家庄井田内46个钻孔的测温数据,绘制了井田的地温-深度曲线以及地温梯度分布图,分析了地温的分布特征及其影响因素,并以1203孔为例分析了地下水对测温曲线及地温梯度的影响。研究结果表明,安家庄井田内垂向上地温曲线主体呈线性,表现出以传导为主导的传热过程;井田内地温梯度介于2.28℃/(100 m)~3.83℃/(100 m),平均值为3.05℃/(100 m),在背斜区较高,在北部向斜区相对较低。分析表明,井田总体上的高地温梯度受区域地质背景的控制,井田内地温梯度受褶皱构造影响明显,局部受地下水活动影响。By analyzing and processing the temperature measurement data of 46 boreholes in Anjiazhuang mine field, the geothermal-depth curve and geothermal gradient distribution map of the mine field are drawn, the characteristics and influencing factors of geothermal distribution are analyzed,and taking borehole 1203 as an example the influence of groundwater on temperature curve and geothermal gradient was analyzed. The results show that the vertical geotherm curve in Anjiazhuang mine field is linear, and the heat transfer is a conduction-dominated process;the temperature gradient in the mine field is between 2.28 ℃/(100 m) and 3.83 ℃/(100 m), with an average value of 3.05 ℃/(100 m);it is higher in the anticline and lower in the northern syncline. The results show that the overall high geothermal gradient of the mine field is controlled by the regional geological setting, the temperature gradient in the mine field is affected by the fold structure obviously and the groundwater activity locally.

关 键 词：安家庄井田 钻孔测温 地温特征 影响因素 地下水 

分 类 号：P314[天文地球—固体地球物理学]