Study On Mechanism Of Direct Leakage Stoppage Of Fractured Rock

Leakage of water in underground engineering has been plagued by many engineers.Most people are the same as the main water leakage of the energy on the pre grouting.But now a lot of engineering structures have been built,if the construction of the completion of the project found the problem of leakage water,it can not be re-re construction.So the development of post grouting technology has become the focus of the control of water disaster in underground engineering.The direct plugging grouting technology is an upgrade in the traditional method,which has the characteristics of low cost,fast aging,material saving,simple process and so on.In this paper,the new post grouting technology,the theoretical formula derivation,numerical simulation and experimental verification.The principle of direct plugging grouting is discussed from the three fluid research methods.Research contents and main results are as follows:(1)from the surrounding rock fracture hydrodynamic conditions,to dip the single fracture were theoretical derivation of Newtonian type of slurry,from the theoretical level to direct grouting method to provide theoretical support.(2)using the FLUENT computational fluid dynamics software,the numerical simulation of the slurry diffusion in the single fracture hydrodynamic condition is carried out,and the diffusion law of the slurry is obtained.(3)the design and manufacture of a simple injection model,at the same time,the experimental results of the FLUENT simulation of slurry diffusion law is verified,from the side of the FLUENT calculation of the effectiveness of the.On the basis of the construction of the experimental platform of large direct plugging grouting experiment.