TEMPORARY WORK OF CUT-OFF WALL IN GROUND USING POLY-URETHANE, ETC.

摘要

PURPOSE: To cut off spring water from the peripheral ground in an underground work site, etc. ;CONSTITUTION: For temporary construction of a cut-off wall in an underground work site, etc., a thin channel 7 is excavated in the peripheral ground of the underground work site by a wire saw, and the thin channel 7 is filled with a mixture 9 of hydrophilie single liquid type polyurethane prepolymer and water glass. According to the constitution, the mixture of hydrophile single liquid type polyurethane prepolymer and water glass is combined with water in the ground to form a polymerized and hardened cut-off wall, and ground water, etc., are not only sufficiently cut off, but noises or vibration, etc., from the underground work site are so prevented that they are not transferred to the outside because of its flexibility. There is no crack in the cut-off wall even in the case of vibration, etc.;COPYRIGHT: (C)1993,JPO&Japio