收稿日期: 2009-04-01
修回日期: 2009-06-19
网络出版日期: 2009-08-10
基金资助
中国科学院知识创新重点项目 (编号: KZCX2-YW-330); 国家自然科学基础人才培养基金项目“冰川冻土学特殊学科点”(编号: J0630966)联合资助.
Water Characteristics Inside Loess During Formation and Dissociation Processes of Methane Hydrate
Received date: 2009-04-01
Revised date: 2009-06-19
Online published: 2009-08-10
张鹏, 吴青柏, 王英梅 . 粉土内甲烷水合物形成与分解过程中的水分特征[J]. 天然气地球科学, 2009 , 20(4) : 616 -619,626 . DOI: 10.11764/j.issn.1672-1926.2009.04.616
Water changes inside loess during the formation and dissociation processes of methane hydrate were studied with a pF-meter sensor which could detect water changes inside soil. It was proved that the new research method with pF-meter sensor could instantly detect the water changes inside loess in the experiment, effectively. It was experimentally shown that hydrate formation could cause a kind of suction which could pump the water inside loess toward hydrate and the water release from hydrate dissociation could increase water content of loess and the water existing in the capillaries of loess could flow down following temperature rise. Additionally, the scope of secondary methane hydrate formation in loess was larger than that of the initial hydrate formation.
Key words: Methane hydrate; Formation and dissociation; Loess; Water
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