Patent ID: 8293325

Claim:
A polymer injection method for blocking piping in dikes and dams, comprising the steps of: (a) providing a transferring device comprising an injection gun, an injector, and a hollow tube, wherein said injection gun connects with an entrance end of said hollow tube through said injector; (b) inserting an outlet end of said hollow tube into an entrance of a piping channel of a dike or dam; (c) transporting two components of polymeric material to said injection gun respectively; (d) mixing and injecting the polymeric material from said injection gun with pressure, through said injector, into said entrance end of said hollow tube, wherein the mixed material starts a chemical reaction; and (e) pushing the mixed and reacted material to enter said entrance of said piping channel of said dike or dam from said outlet end of said hollow tube, wherein the mixed and reacted material expands and becomes foamed solid from liquid to block said pipe channel of said dike or dam.