Abstract:

The general dynamic governing equation of soluble grouts transportatoin in the fissures and conduits in karst zones is achieved on basis of the basic assumption of the grout diffusion theory, the characteristics of the medium and grouts and the achievements made by other scholars. The general dynamic governing equation is rationally simplified and the diffusion of soluble grouts in the fissures and conduits in karst zones is obtained on basis of considering the characteristics of the soluble grouts and medium and their diffusion process. Numerical discretion is made on basis of finite volume method and by means of such as HQUICK, Central Difference, Crank-Nicolson and Admas-Bashforth The numerical solution is obtained by means of Possion Pressure equation. The theoretical basis of numerical simulation and software developping for the grout diffusion in the karst zone has been established. A new way of soluble grout diffusing in karst fractures and conduits is opened through the computational fluid dynamics theory.

Key words: soluble grout, grout diffusion in karst zone, numerical discretion, fluid dynamics