Construction technology of relay jacking for glass fiber reinforced plastics sand-inclusion pipe-jacking and apparatus thereof

Abstract

Disclosed is a construction technique of mechanical jacking between intermediate pipe jacking with sand-filled glass fiber reinforced plastics and the intermediate device thereof. The device is to install a widened pressure equalizing steel ring at the end of the front and rear glass fiber reinforced plastic sand-filled jacking pipes in the steel sleeve of the relay room. The inner walls of the front and rear glass fiber reinforced plastic sand-filled jacking pipes are fixed to ensure that the relay jacks evenly distributed between the front and rear widened pressure equalizing steel rings can work normally. The key point of this process is to use the above-mentioned device to carry out relay jacking on the glass fiber reinforced plastic sand-filled pipe. After the current root jacking pipe is in place, the jack in the relay room will start jacking. After the jacking is completed, release the cylinder of the jack in the relay room. Make the jack in the relay room at the back continue to jack, and so on, until the front jacking pipe is completely in place; then remove the subsequent relay room components, seal the installation hole on the steel sleeve of the relay room, and use The main jack or the jack between the relays at the back will continue to jack the rear jacking pipe to fill the gap occupied by the original relay.

Description

technical field [0001] The invention relates to the pipe jacking technology in underground pipeline engineering, in particular to a construction technique of mechanical jacking between intermediate pipe jacking with glass fiber reinforced plastic and sand and an intermediate device thereof. Background technique [0002] As a non-excavation underground pipeline construction method, pipe jacking construction can easily lay underground pipelines across roads, railways, houses, rivers, etc. It has little impact on traffic, less excavation and high mechanization. It is a modern underground pipeline laying method, and more and more underground projects adopt this construction method. However, in the traditional concrete pipe and steel pipe jacking construction technology, there are still many problems to be solved urgently, the more important ones are soft foundation countersunk, difficulty in deviation correction, etc. In addition, the corrosion resistance of...

AI Technical Summary

Problems solved by technology

If it is still sealed with concrete, if it is thin, that is, it is equivalent to the wall of the FRP sand-filled pipe, the construction may be more difficult, and some other mechanical properties and sealing performance will be worse than the FRP sand-filled pipe section; It will cause a sudden change in the diameter of the pipe and affect the water flow; if it is sealed with glass fiber reinforced plastic, the cost will be too high

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