Shear Behaviour and Localized Deformation of Methane Hydrate-Bearing Sand using High Pressure Plane Strain Shear Tests
Shear Behaviour and Localized Deformation of Methane Hydrate-Bearing Sand using High Pressure Plane Strain Shear Tests
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发表时间：
2015-07
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通讯作者：
S. Kajiyama;A. Nishimura;M. Hyodo
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作者：
S. Kajiyama;A. Nishimura;M. Hyodo
日本正在研究和开发甲烷水合物（以下简称MH）。为了研究宿主砂的特性对含氢砂剪切性能的影响，在由四种材料组成的试样中人工制备了含氢砂。本研究采用高应力低温三轴平面应变试验装置。在所有轴承材料中都观察到刚度和强度的显著增加。随着MH饱和程度的增加，剪切带角度增大，剪切带宽度变窄。
Methane Hydrate (hereafter referred to as MH) is being researched and developed in Japan. In order to investigate the effect of the characteristics of a host sand on the shear behaviour of MH-bearing sands, MH was artificially produced in specimens composed of four kinds of material. In this study, a high stress and low temperature triaxial plane strain testing apparatus was used. A marked increase in stiffness and strength was observed in all MHbearing materials. An increase in degree of MH saturation led to an increase in the angle of the shear band and the width of the shear band became narrower.