Stopping device for segment of pipe jacking machine and method of use thereof

Abstract

The invention relates to a retreat-preventing device for a tube sheet of a tube push bench and an application method thereof. The retreat-preventing device comprises counter-force racks, connecting plates and jacks, wherein the counter-force racks are fixed to a launch shaft base and are arranged on two sides of a hole excavated by the tube push bench, and the counter-force racks are provided withmounting faces opposite to a section excavated by the tube push bench; the connecting plates are detachably mounted on two sides of the tube sheet at the hole, and the connecting plates are located between the mounting faces and the section excavated by the tube push bench; and the jacks, corresponding to the connecting plates, are vertically mounted on the mounting faces, the jacks are electrically connected to controller sensors, and displacement changes of jack nodes of the jacks are induced by the sensors, so that controllers adjust thrusts acted to the connecting plates till the jackingnodes of the jacks no longer displace, so that the tube sheet is prevented from retreating. The retreat-preventing device solves the problem that the push tube is hard to prevent retreat in a deeply buried large push tube project effectively, can adjust the thrust of the retreat-preventing device precisely to keep balance of the thrust and the pressure of a soil surface so as to prevent aggravation of surface subsidence, so that the construction quality and the construction efficiency are improved.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a back-stopping device for a segment of a pipe jacking machine and an application method thereof. Background technique [0002] The pipe jacking machine is a commonly used equipment in the construction of underground transportation systems. The construction distance of the pipe jacking machine is the same as that of the shield machine, but the power device of the pipe jacking machine is located in the working well, so that the pipe jacking machine needs to cut off the power supply and The pipeline, the de-energized pipe jacking head and the installed segment will fall back under the earth pressure of the excavation face. [0003] In deep-buried large pipe jacking projects, the thrust received by the head of the pipe jacking machine is much greater than that received by the pipe jacking machine in ordinary projects. Most of the existing technologies use shear pins or support r...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, to provide a device for preventing the segment of the pipe jacking machine from retreating and its use method, which solves the problem of difficulty in stopping the retreat of the pipe jacking project in the deep-buried large pipe jacking project, and effectively prevents the segment from Back phenomenon, and can precisely adjust the thrust of the anti-retraction device, maintain the balance between the thrust and the soil surface pressure, avoid the aggravation of ground subsidence, and improve the construction quality and construction efficiency

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