Expressway reconstruction and extension project embankment settlement prevention and treatment structure and prevention and treatment method thereof

Abstract

The expressway reconstruction and extension project embankment settlement prevention and treatment structure comprises a plurality of sets of grouting lifting structures which are buried on steps arranged at the joint of a new roadbed and an old roadbed; each set of grouting lifting structure comprises a grouting system and a plurality of lifting systems; wherein the grouting system comprises a grouting outer pipe; the movable grouting device comprises a grouting inner pipe, a grouting chamber and a slurry suction pipe. A plurality of grouting side pipes; the lifting system comprises a lifting pipe which is located in the old roadbed and is perpendicular to the grouting outer pipe. And the waterproof geotextile bag is located in the new roadbed and is perpendicular to the grouting outer pipe. According to the expressway reconstruction and extension project embankment settlement prevention and treatment structure and method, the grouting system and the lifting system are pre-buried at the reconstruction and extension roadbed, lifting of soil bodies on the two sides of the lifting system is achieved, the grouting inner pipe and the pulley are matched, movement of the grouting chamber in the grouting outer pipe can be achieved, and multi-position grouting construction can be achieved.

Description

technical field [0001] The invention belongs to the technical field of old road reconstruction and expansion projects, and relates to an embankment settlement prevention structure and a prevention method for expressway reconstruction and expansion projects. Background technique [0002] With the continuous development of my country's transportation industry, the highways designed and constructed in the early stage can no longer meet the increasing traffic volume, and it is urgent to rebuild, expand and upgrade the original roadbed. Because the settlement of the original subgrade has been basically completed, there is uneven combination and uneven settlement between the old and new subgrades, which makes the subgrade splices poor in water tightness, difficult to construct, and poor in compactness. The problem of settlement reduces the driving texture of the road. [0003] At present, the main solutions to the problem of uneven settlement in the reconstruction and expansion o...

AI Technical Summary

Problems solved by technology

It solves the problem of being unable to perform positioning grouting during the current roadbed soil grouting and lifting construction, and the problem that a single grouting in the grouting pipe will block the grouting pipe, making it impossible to perform multi-position grouting

Images