GROUTING METHOD IN A PRE-STRESSED TUNNEL USING A DOUBLE PACKER AND A HYDRAULIC SUPPORT MEMBER INSERTING DEVICE WHICH DO NOT REQUIRE ADDITIONAL PRE-GROUTING

摘要

PURPOSE: A grouting method in a pre-stressed tunnel using a double packer and a hydraulic support member inserting device are provided to inject an injection material into the ground even if the ground has water.;CONSTITUTION: A grouting method in a pre-stressed tunnel using a double packer is as follows. A temporary packer(4) is installed in a linear support member and is inserted into the inlet of a hole. The support member is connected to the front end of a pipe having a main packer(5) and is inserted into a borehole of a tunnel excavation line. An injection material is injected into the temporary packer. A main injection material is injected into the main packer. After the injection, the pipe having the main packer is removed.;COPYRIGHT KIPO 2012