期刊
SOILS AND FOUNDATIONS
卷 53, 期 2, 页码 299-314出版社
JAPANESE GEOTECHNICAL SOC
DOI: 10.1016/j.sandf.2013.02.010
关键词
Methane hydrate-bearing sand; Triaxial compression test; High pressure; Temperature; Back pressure; Strength; Stiffness; Stability
A series of triaxial tests has been carried out on the mechanical properties and dissociation characteristics of sands containing methane hydrate using an innovative high pressure apparatus which has been developed to reproduce the in-situ conditions expected during proposed methane extraction methods. It was found that the strength of MH sand increased with MH saturation due to particle bonding. Dissociation by heating caused large axial strains for samples with an initial shear stress and total collapse for samples consolidated in the metastable zone. In the case of dissociation by de-pressurization, axial strains were generated by increasing effective stress until a stable equilibrium was reached. However, re-pressurization led to the collapse in the metastable zone. (C) 2013 The Japanese Geotechnical Society. Production and hosting by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据