Slurry balanced jacking pipe equipment grouting tail sleeve device

Abstract

The invention discloses a slurry balanced jacking pipe equipment grouting tail sleeve device, and relates to the technical field of slurry balanced jacking pipe equipment. The device aims to solve theproblems that according to an existing slurry balanced jacking pipe equipment grouting tail sleeve device, when thixotropic slurry is injected, the length of an injection pipe needs to be continuously increased in the pushing process of a jacking pipe, the operation complexity is increased and injection pipes are not easy to connect during length increase. The device comprises a tail sleeve and the jacking pipe, the tail sleeve sleeves the outer surface of the jacking pipe, a through channel is formed in the wall surface of the tail sleeve, and a grouting pipe is sleeved with the through channel. Due to the design of the tail sleeve and the grouting pipe, the thixotropic slurry is injected conveniently between the jacking pipe and a soil layer, so that the frictional resistance between the jacking pipe and the soil layer is reduced. Through the design of a rolling disc and a mud blocking steel coil, a slurry outlet can be conveniently blocked through the mud blocking steel coil in thejacking process of the jacking pipe, and therefore the thixotropic slurry is prevented from flowing back into the tail sleeve through the slurry outlet.

Description

technical field [0001] The invention relates to the technical field of mud-water balance pipe jacking equipment, in particular to a grouting tail sleeve device for mud-water balance pipe jacking equipment. Background technique [0002] The mud-water balanced pipe jacking is a mechanical and automatic pipe jacking construction method that cuts the soil body at a full section, uses mud-water pressure to balance the earth pressure and groundwater pressure, and uses mud-water as the medium for transporting spoil. Compared with manual pipe jacking, mud-water balance pipe jacking has higher construction costs, but when the geological conditions are quicksand, it is safer to use mud-water balance mechanical pipe jacking than manual pipe jacking. When the mud-water balance pipe jacking on the market is jacking, due to the high friction between the sand layer and the pipe, the resistance is greater than the compressive strength of the pipe, which causes the pipe to burst and the jack...

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a mud-water balance pipe jacking equipment grouting tail sleeve device, which solves the need to continuously increase injection during the pipe jacking process when the existing mud-water balance pipe jacking equipment grouting tail sleeve device injects thixotropic mud The length of the tube increases the complexity of the operation, and there is also the problem that the injection tubes are not easily connected to each other when the length is increased

Images