新郑矿区钻孔地温特征及其受控机制  

Drilling temperature distribution in Xinzheng mining area and its controlling mechanism

作　　者：朱绍军[1] 孟召平[1] 刘亮亮[1] 于倩倩[1] 

机构地区：[1]中国矿业大学资源与地球科学系

出　　处：《煤田地质与勘探》2008年第2期47-51,共5页Coal Geology & Exploration

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB209405);国家自然科学基金项目(40772100);全国优秀博士学位论文作者专项资金(200247);高等学校博士学科点专项科研基金(20050290009)

摘　　要：地温是影响煤炭开采的重要地质因素之一。通过对新郑矿区911钻孔稳态测温及理论分析表明,911孔位于新郑矿区主体构造滹沱背斜的轴部,具有高热流、高梯度的温度分布特征。钻孔的温度分布主要受构造起伏的影响和地下水垂向对流的控制双重作用。矿区构造起伏使来自地壳深部的热流重新分配并向背斜轴部集中,从而导致911孔出现高热流高梯度的温度特征;地下水的垂直对流运动使钻孔的温度分布进一步产生差异性。The ground temperature is one of the main important geologic factors affecting the coal mining. It is shown that Borehole No.911 lies in the Hutuo anticlinal axis, the main structure of Xinzheng mining area and has the distribution characteristics of high heat flow and high geothermal gradient through measurement in steady state and theory analysis. The temperature of the borehole mainly affected by double controlling factors including the tectonic fluctuation and the groundwater vertical convection. The heat flow coming from deep crust is reapportioned by the fluctuation of the mining area and made concentrating to anticlinal axis and the temperature characteristics of high heat flow and high geothermal gradient of Borehole No.911 is resulted in. More different distribution to the drill temperature is impelled by the vertical convection movement of groundwater, and the distribution and controlling mechanisms of the ground temperature field are revealed.

关 键 词：钻孔地温 地温异常 影响因素 受控机制 

分 类 号：P641.5[天文地球—地质矿产勘探]