Stability of methane hydrate bearing sands and efficient production method in methane hydrate exploitation from deep seabed

点击翻译按钮获取中文摘要

High pressure and low temperature plane strain testing apparatus was developed for visualizing deformation of methane hydrate bearing sand due to methane hydrate production. Using this testing apparatus, plane strain compression tests and methane hydrate dissociation test by depressurization method were performed. By using image analysis, shear band of methane hydrate bearing sand was observed. The constitutive model for MH bearing soils which was developed in the previous study was applied to FEM and was analyzed the same problem as the experiment. The analytical results had good corresponding with the experimental results.