Akira Mori

TL;DR: In this paper, the relation between the hydrofracturing pressure Pf and the strength of cohesive soils was investigated in terms of total stress, where Pf = min + qu σmin: the minimum principal stress, qu: the unconfined compression strength.

TL;DR: In this paper, the authors investigated the fracturing phenomena in sandy as well as cohesive soil caused by injecting viscous materials such as the mortar and found that the fracturing pressure generally increases as the flow value F of injection material increases.

TL;DR: In this article, the authors investigated the relationship between the permeability and the dilatancy of sands stabilized by chemical grout under triaxial compression tests, and concluded that the change of permeability depends upon density, grain size and the type of chemical grouting.

TL;DR: In this paper, the volume ratio a of grout entered into void space in each part of solidified region by chemical grouting for the sandy ground was investigated and it was shown that the pore gel in the solidified body is concentrated when the succeeding grouts penetrate the solidification body.

TL;DR: In this paper, the authors discuss the effects of different types of disasters on the environment, including hurricanes, floods, and landslides, and earthquakes, and propose a solution to deal with them.