Development of Grout Injection Model to Single Fracture in Considering Inertia Term and Its Application on Parallel Plate Experiments
Kiyoshi KISHIDA, Kenichiro KOBAYASHI, Takashi HOSODA, Tomoo FUJITA, Hirokazu KISHI, Yuji KUZUHA and Jun NOBUTO
Abstract: In this research work, the grout injection model of a single fracture, in which non-Newtonian fluid and the inertia term are considered, has been developed. Then, the grout injection experiments of a single fracture have been conducted and the numerical simulations have been also carried out. As compared our proposed model with past one, the remarkable difference in grout penetration could not be clearly observed, except for the pressure at the aperture entrance and penetration velocity of the grout. Our proposed model could show the practical pressure behavior against previous model. Moreover, it can be also confirmed that the pressure at the fracture entrance had a temporary excess level against a set up level in the only initial time of simulations. And the behavior was considered as a passing phase in relation to the increase of shearing stress at the fracture entrance. Key Words:Rock fracture, Grout, Bingham flow, Parallel plate model, Inertia term