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首页> 外文期刊>Energy Conversion & Management >Assessing the permafrost temperature and thickness conditions favorable for the occurrence of gas hydrate in the Qinghai-Tibet Plateau
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Assessing the permafrost temperature and thickness conditions favorable for the occurrence of gas hydrate in the Qinghai-Tibet Plateau

机译：评估有利于青藏高原天然气水合物发生的多年冻土温度和厚度条件

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摘要

Permafrost accounts for about 52% of the total area of the Qinghai-Tibet Plateau, and the permafrost area is about 140 × 10~4 km~2. The mean annual ground temperature of permafrost ranges from -0.1 to -5 ℃, and lower than -5 ℃ at extreme high-mountains. Permafrost thickness ranges from 10 to 139.4 m by borehole data, and more than 200 m by geothermal gradients. The permafrost geothermal gradient ranges from 1.1 ℃/100 m to 8.0 ℃/100 m with an average of 2.9 ℃/100 m, and the geothermal gradient of the soil beneath permafrost is about 2.8-8.5 ℃/100 m with an average of 6.0 ℃/100 m in the Qinghai-Tibet Plateau.rnFor a minimum of permafrost geothermal gradients of 1.1 ℃/100 m, the areas of the potential occurrence of methane hydrate (sl) is approximately estimated to be about 27.5% of the total area of permafrost regions in the Qinghai-Tibet Plateau. For an average of permafrost geothermal gradients of 2.9 ℃/100 m, the areas of the potential occurrence of methane hydrate (sl) is approximately estimated about 14% of the total area of permafrost regions in the Qinghai-Tibet Plateau. For the sll hydrate, the areas of the potential occurrence of sll hydrate are more than that of sl methane hydrate.
机译：多年冻土约占青藏高原总面积的52％，多年冻土面积约140×10〜4 km〜2。多年冻土的年平均地面温度在-0.1到-5℃之间，在极高的高山上低于-5℃。根据钻孔数据，多年冻土厚度范围从10到139.4 m，根据地热梯度，永久冻土厚度超过200 m。多年冻土的地热梯度范围为1.1℃/ 100 m至8.0℃/ 100 m，平均为2.9℃/ 100 m，多年冻土下土壤的地热梯度约为2.8-8.5℃/ 100 m，平均为6.0在青藏高原的/ 100℃处。rn对于永久冻土的最低地热梯度为1.1℃/ 100 m处，甲烷水合物（sl）潜在发生面积的估计大约为青藏高原总面积的27.5％。青藏高原的多年冻土区。对于平均2.9℃/ 100 m的多年冻土地热梯度，估计潜在的甲烷水合物（sl）发生面积约为青藏高原多年冻土地区总面积的14％。对于矿渣水合物，矿渣水合物潜在发生的面积大于矿渣甲烷水合物的面积。

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  • 来源
    《Energy Conversion & Management》 |2010年第4期|P.783-787|共5页
  • 作者

    Wu Qingbai; Jiang Guanli; Zhang Peng;

  • 作者单位

    State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;

    State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;

    State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Qinghai-Xizang Plateau; permafrost; natural gas hydrate; geothermal gradients;

    机译：青藏高原多年冻土;天然气水合物;地热梯度;

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