EXCAVATION EARTH RETAINING METHOD FOR CHANNEL. ETC.

摘要

PROBLEM TO BE SOLVED: To provide an earth retaining method capable of constructing an earth retaining wall with high strength excellent in stability having high work efficiency, constructing an underground structure within a short period of time by using the earth retaing wall for a main body of the underground structure such as a channel, etc., and giving no bad influence on the existing structure without causing the settlement or looseness of the ground. ;SOLUTION: In an excavation earth retaining method for a channel, etc., a pair of both right and left posts 1 and 1 are pressed or erected in the ground, an upper beam 19 is fixed to both right and left posts 1 and 1 in the shape of a portal, both front and rear ends are interlocked with both front and rear posts 1 and 1 to press or erect earth retaining plates 9 in the ground, a bearing beam 4 is mounted to both right and left posts in a detachable manner in the lower position than the upper beam 19, the ground between both right and left posts 1 and 1 and earth retaining plates 9 and 9 is excavated up to the required depth to form an underground structure such as a channel, etc. Gaps between the posts 1 and earth retaining plates 9 are sealed with a cylindrical cut-off material containing high pressure fluid in a water-tight state.;COPYRIGHT: (C)1998,JPO