... injection injection borehole urayasu city injection waterflooding upstream oil & gas saturation degree earthquake soil improvement In-situ applicability test of soil improvement for housing sites using Micro-Bubbles against soil liquefaction in URAYASU Koichi Nagao Sato Kogyo co.,ltd. Atsugi...

...) and the plane (P) waves were measured on Toyoura sand samples at different relative densities with confining pressures and saturation degrees. Factors effecting on the wave velocities of Toyoura sand samples were investigated by comparing the test results. The variations of the P and S waves are discussed...

..., and higher cost performance than any other methods. And also, in ecological aspect, the method will provide better performance. micro bubble liquefaction saturation degree injection method waterflooding enhanced recovery micro bubble water liquefaction resistance test countermeasure diameter...

... hydrate formation. However, synthetic sediment from ice-sand mixture showed no significant increase in the strength at less than 25% of the saturation degree of methane hydrate, whereas the sediment strength by water-sand mixture rose successively with the methane hydrate saturation. Moreover, the effects...