PERMEABILITY ROCK STAGNANT WATER GROUTING METHOD FOR BULK INJECTION TYPE

摘要

PURPOSE: A water grouting method for permeable bedrock using a bulk injection method is provided to install a cutoff wall in a permeable rock using a sheet pile. CONSTITUTION: A water grouting method for permeable bedrock using a bulk injection method is as follows. A cutoff wall is installed in permeable bedrock using a sheet pile(S100). A first borehole is formed by vertically boring from the front surface or the rear surface of the sheet pile to the ground(S110). A second borehole is formed on the bottom surface of the first borehole using a rod, and the rod is drawn out of the second borehole(S120). A packer having an injection pipe and a perforated pipe is fixed to the bottom of a casing and the top of the first borehole(S130). The injection pipe and the perforated pipe inject a grout material into the boreholes(S140). The injection pipe and the perforated pipe are drawn out of the boreholes, and the space is filled with mortar(S150).