| 一种海底含气软土的室内模拟制样方法 |
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| 引用本文： | 韩珠峰,王勇,孙富学,陈楷文. 一种海底含气软土的室内模拟制样方法[J]. 实验室研究与探索, 2021, 0(1): 16-21 |
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| 作者姓名： | 韩珠峰 王勇 孙富学 陈楷文 |
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| 作者单位： | 1.桂林理工大学土木与建筑工程学院;2.中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;3.温州大学建筑工程学院 |
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| 基金项目： | 国家自然科学基金项目(51979269,51579237)。 |
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| 摘 要： | 基于沸石的微孔吸附特性,以沸石为中间介质研究模拟制备含气软土沉积物的方法;通过沸石对CH4、N2、CO2和H24种不同气体的吸附/脱附试验,探讨了沸石掺量与置换气量之间的关系,利用CT扫描试验检验了所制含气效果;基于微型十字板剪切试验,分析了土体不排水剪切强度与沸石掺量之间的关系.实验结果表明:在同等条件下,沸石掺量与...
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| 关 键 词： | 含气土 沸石 吸附性 浅层气 |
A Method of Preparing Submarine Gassy Soft Soil in Laboratory |
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| HAN Zhufeng,WANG Yong,SUN Fuxue,CHEN Kaiwen. A Method of Preparing Submarine Gassy Soft Soil in Laboratory[J]. Laboratory Research and Exploration, 2021, 0(1): 16-21 |
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| Authors: | HAN Zhufeng WANG Yong SUN Fuxue CHEN Kaiwen |
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| Affiliation: | (College of Civil Engineering and Architecture,Guilin University of Technology,Guilin 541004,Guangxi,China;State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;College of Civil Engineering and Architecture,Wenzhou University,Wenzhou 325035,Zhejiang,China) |
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| Abstract: | Based on the microporous adsorption characteristics of artificial zeolite,a method of preparing gassy soft soil by using zeolite was proposed.The relationship between the amount of zeolite and the amount of replacement gas was studied by zeolite adsorption/desorption tests on four different gases:CH4,N2,CO2 and H2.The gas distribution in soil samples was investigated by CT(Computed Tomography)scanning test.Based on the vane tests,the relationship between undrained shear strength of soil and the content of zeolite was analyzed.Results show thatunder the same condition,the amount of replacement gas(CH4,N2,CO2 and H2)is linearly proportional to the content of zeolite;the volume of yielding gas in CH4 and N2 are almost the same,followed by H2,and the amount of CO2 is the smallest;with a small amount of zeolite,the undrained shear strength of soil samples is not affected by the zeolite,and air bubbles are evenly distributed in the prepared soil.The method proposed in this work can be better applied to the quantitative and controlled preparation of gassy soil in laboratory. |
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| Keywords: | gassy soil zeolite adsorption shallow gas |
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