Quick treatment method for jam of shield screw conveyer and pile casing

Abstract

The invention provides a quick treatment method for jam of a shield screw conveyer. The method comprises the following steps of S10, determining a jam area; S20, determining a cut dimension in the jamarea and cutting the pile casing to form an overhaul cut, and cleaning a jam foreign matter in the screw conveyer through the cut; S30, finishing cleaning; and S40, closing the cut again by using a cut plate. According to the quick treatment method for jam of the shield screw conveyer, based on original inspection, an opening of a certain specification is cut in a proper position in a side surface of the pile casing of the screw conveyor, gravels and lonestones inside are cleaned, and finally, the cut is welded and closed again. The quick treatment method prevents a worker from cleaning the inside directly, so that the operation risk of constructors is reduced greatly, the treatment efficiency is high, and the problem of project delay caused by jam is solved well. The plugging method is simple and feasible, can solve emergencies ruly, efficiently and safely in coping with a contingency plan, is of certain guiding significance to existing shield construction, and is worth being popularized.

Description

Technical field [0001] The invention relates to the technical field of shield construction of underground tunnels, in particular to a quick processing method and a protecting tube of a shield screw conveyor. technical background [0002] Shield machine, as the pioneer of urban subway construction, has become the primary construction method of underground tunnel construction in China because of its high degree of mechanization, fast tunneling speed and little disturbance to stratum. The composition of shield machine is complex. As an integral part of shield machine, screw conveyor can discharge the muck in the silo on the one hand, so that the shield can move forward continuously in the stratum. On the other hand, it can control the pressure at the bottom of the conveyor, maintain the earth pressure balance on the shield excavation face, and ensure the normal tunneling of shield machine. It plays an important role. At the same time, our country has a vast territory. When shield tu...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, it is time-consuming and labor-intensive to clean the debris by manually entering the soil bin or the exit of the screw machine, and it is difficult to ensure the safety of the construction personnel. Or adding a sleeve to separate the gravel, clay, etc. It also takes a long time. Once the shutdown time is long, it will not only affect the construction period, but also cause the shield machine to sink when the geological conditions are relatively bad, which will affect the original line design of the shield section, and the cost will be even greater.

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