Open and closed chest soil pressure balance dual-mode single-shield TBM heading machine

Abstract

The invention provides an open and closed chest soil pressure balance dual-mode single-shield TBM heading machine. The heading machine comprises a soil tank, a soil connection ring, a soil inlet and atelescopic oil cylinder. A soil outlet is formed on the tank wall of the soil tank. The soil connection ring comprises a fixed ring and a moving ring which are coaxially arranged. The fixed ring is fixed to the shell of the heading machine leaving from the soil outlet, and the first end ring port of the fixed ring is connected to the soil outlet. The outer ring surface of the moving ring attachesto and is slidably arranged on the inner ring surface of the fixed ring. The first end ring port of the moving ring is covered with a baffle plate. The outer edge of the baffle plate is protruded from the outer ring surface of the moving ring and is extended to form a circle of sealing edge. The sealing edge has a sealing surface used for sealing the port edge of the first end ring port of the fixed ring. The soil inlet is arranged on the ring body of the moving ring. The first end of the telescopic oil cylinder is fixedly connected to the shell of the heading machine. The second end of the telescopic oil cylinder is fixedly connected to the moving ring. The TBM heading machine is suitable for the two modes of open and closed chest soil pressure balance, and in the event of sudden water inrush, the closing of the soil connection ring can be rapidly realized, and the sealing of the soil tank is realized too.

Description

technical field [0001] The invention relates to the field of shield construction, in particular to an open-chest and closed-chest earth pressure balance dual-mode single-shield TBM roadheader. Background technique [0002] With the large-scale development of underground space, especially many underground projects, the construction interval is generally dominated by one kind of geology, and there are other transitional strata and complex geology at the same time. In the prior art, the soil bin of the TBM roadheader with a single hard rock geological adaptability is open, and the belt conveyor of the host machine is used to excrete the muck. When encountering a local water-rich rock formation with well-developed cracks, problems of gushing and geological subsidence will occur. , which will have a significant impact on the project, which is extremely risky in complex and changeable strata or in strata with unknown local geological information engineering. Therefore, it is nece...

AI Technical Summary

Problems solved by technology

In the prior art, the soil bin of the TBM roadheader with a single hard rock geological adaptability is open, and the belt conveyor of the host machine is used to excrete the muck. When encountering a local water-rich rock formation with well-developed cracks, problems of gushing and geological subsidence will occur. , which will have a significant impact on the project, which is extremely risky in complex and changeable strata or in strata with unknown local geological information engineering

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