| 中国大陆科学钻探主孔动态地温测量 |
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| 引用本文： | 何丽娟,胡圣标,杨文采,汪集旸,杨树春,袁玉松,程振炎.中国大陆科学钻探主孔动态地温测量[J].地球物理学报,2006,49(3):745-752. |
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| 作者姓名： | 何丽娟 胡圣标 杨文采 汪集旸 杨树春 袁玉松 程振炎 |
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| 作者单位： | 1.中国科学院地质与地球物理研究所, 北京 100029 2 中国地质科学院地质研究所, 北京 100037 |
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| 基金项目： | 国家重大基础科研973项目（2003CB716505）资助. |
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| 摘 要： | 介绍了大陆科学钻探主孔完钻后4次的钻井测温数据，地温梯度随深度的变化趋势，系统的热导率测试结果及其温压校正. 地温测量显示，浅部（100m以上）的4次测量结果有较大的区别，而100m以下测量温度趋于一致.在900～1600m井段，温度略有波动，可能存在地下水活动.到了深部，温度与深度呈现良好的线性关系. 在0～500m,500～2700m,2700～3600m及3600m以下这4个井段范围内，地温梯度随深度降低或增加的趋势交替变化，平均地温梯度248±34℃/km. 198块岩芯样品测试结果表明，热导率变化范围在1711～36 W/(m·K)，平均2716±0403 W/(m·K). 依据实测的温度-深度进行温压校正后，热导率为1989～3652 W/(m·K)，平均2808±0363 W/（m·K）. 热导率随深度的变化趋势与地温梯度的变化趋势并不能完全相互补偿，表明影响地温梯度的其他因素不容忽视. 大陆科学钻探温度测量，为今后进一步研究超高压变质带深部地热场及其地球动力学含义提供了可靠的基础数据.
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| 关 键 词： | 中国大陆科学钻探主孔 地温测量 地温梯度 热导率 |
| 文章编号： | 0001-5733（2006）03-0745-08 |
| 收稿时间： | 2005-08-23 |
| 修稿时间： | 2005-08-232006-02-08 |
Temperature measurement in the main hole of the Chinese Continental Scientific Drilling |
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| HE Li-Juan,HU Sheng-Biao,YANG Wen-Cai,Wang Ji-Yang,YANG Shu-Chun,YUAN Yu-Song,CHENG Zhen-Yan.Temperature measurement in the main hole of the Chinese Continental Scientific Drilling[J].Chinese Journal of Geophysics,2006,49(3):745-752. |
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| Authors: | HE Li-Juan HU Sheng-Biao YANG Wen-Cai Wang Ji-Yang YANG Shu-Chun YUAN Yu-Song CHENG Zhen-Yan |
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| Institution: | 1.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2 Institute of Geology, Geological Academy of China, Beijing 100037, China |
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| Abstract: | This paper presents the temperature measurements in the main hole of Chinese Continental Scientific Drilling, the variation trend of temperature gradient with depth, and systemic thermal conductivity data together with the temperature_pressure correction. Four temperature profiles indicate that the measured temperatures in four times show great differences in the shallow depth (above 100m), but tend to be consistent downward. However, between 900～1600m, the temperatures show fluctuation again, possibly due to effects of groundwater activities. The deeper temperature in the borehole shows quite good linear relationship with the depth. In four depth ranges, 0～500m, 500～2700m, 2700～3600m, and below 3600m， the temperature gradient increases or decreases alternatively, with a mean of 248±34℃/km. The thermal conductivities based on 198 core samples range from 1711 to 36 W/(m·K), with an average of 2716±0403 W/(m·K). After temperature_pressure correction, the thermal conductivities range between 1989 and 3652 W/(m·K), with a mean of 2808±0363 W/(m·K). The variation of thermal conductivity with depth could not compensate the variation of temperature gradient, indicating that other factors influencing temperature gradient could not be neglected. Temperature measurements and its long_period observation will provide reliable basic data for geothermal and geodynamical study of the ultra_high pressure metamorphic belt. |
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| Keywords: | Main Hole of Chinese Continental Scientific Drilling Temperature measurement Temperature gradient Thermal conductivity |
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