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《Chinese Journal of Geophysics》 2011-04
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Water transfer rules during methane hydrate formation and dissociation inside saturated coarse sand and loess

ZHANG Peng,WU Qing-Bai,WANG Ying-Mei State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou 730000,China  
In order to understand the kinetics mechanism of methane hydrate formation and dissociation inside porous media more comprehensively,a novel research apparatus with three pF-meter sensors which could detect water changes of soil was designed and manufactured and the water transfer rules during methane hydrate formation and dissociation inside two different saturated media were studied with the novel apparatus.It was experimentally proved that under the same formation condition,there were obvious differences in methane hydrate formation configuration and water transfer rules between inside the saturated coarse sand and inside the saturated loess during the same hydrate formation processes.During hydrate dissociation processes,the water transfer rules were abnormal and inconsistent with the conventional methane dissociation facts,which needed more studies to find out the real reasons.
【Fund】: 中国科学院知识创新重点项目(KZCX2-YW-330);; 国家自然科学基础人才培养基金(J0630966);; 中科院冻土工程国家重点实验室人才培养基金(52YOSF102)资助
【CateGory Index】: P618.13
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