Anti-sliding device and method for large-gradient shield tunneling machine

Abstract

The invention belongs to the technical field of civil engineering construction and relates to an anti-sliding device for a large-gradient shield tunneling machine. The anti-sliding device comprises afixing block, a tensioning mechanism, a swing arm mechanism and an anti-sliding damping block; the anti-sliding damping block and the fixing block are connected through the swing arm mechanism; the two ends of the swing arm mechanism are hinged to the anti-sliding damping block and the fixing block correspondingly, thus a hinge structure is constituted by the fixing block, the swing arm mechanismand the anti-sliding damping block; the fixing end of the tensioning mechanism is connected with the fixing block, the tensioning movable end of the tensioning mechanism is connected with the swing arm mechanism, and the tensioning movable end pushes the swing arm mechanism to rotate and then drives the anti-sliding damping block to move; the swing arm mechanism comprises a first swing arm and a second swing arm which are parallel mutually; and the two ends of the first swing arm and the two ends of the second swing arm are hinged to the anti-sliding damping block and the fixing block throughrotating shafts correspondingly, and a quadrilateral hinge structure is constituted by the fixing block, the first swing arm, the second swing arm and the anti-sliding damping block. The structure issimple, the shield tunneling machine can be prevented from sliding downwards, and tunneling of the shield tunneling machine is stable and safe.

Description

technical field [0001] The invention belongs to the technical field of civil engineering construction, and relates to an anti-slip device, in particular to an anti-slip device and an anti-slip method for a large slope shield machine. Background technique [0002] The shield tunnel construction method refers to the use of a shield machine to control the excavation surface and surrounding rock from collapse and instability accidents, on the one hand to carry out tunnel excavation and slag discharge, and to complete the assembly of segments in the machine to form lining and implement A method of constructing a tunnel without disturbing the surrounding rock by grouting behind the wall. [0003] In the construction of large-slope shield tunneling, after entering from the shield tunneling machine, go down with a slope of 35‰. The slope is relatively large. When the battery car enters and exits, it is very easy to cause the car to slip and cause safety accidents. And when the shie...

AI Technical Summary

Problems solved by technology

[0003] In the construction of large-slope shield tunneling, after entering from the shield tunneling machine, go down with a slope of 35‰. The slope is relatively large. During the process of entering and exiting the battery car, it is very easy to cause the car to slip and cause safety accidents.

And when the shield machine goes down, the covering soil thickness is only 2.4 (left line) ~ 2.8m (right line), and the covering soil can only reach 6 meters after the left line is 120m, and the covering soil is shallow, which has a great impact on land subsidence; The earth pressure balance is not easy to establish during the excavation process. When the shield machine advances, it will cause surface uplift, slurry, and landslides. If there is water in the ground, it will be difficult to press the slope, the tunnel will float up, and the axis is difficult to control, which needs to be dealt with; The problem of construction slippage often occurs during construction operations. At present, there is no good solution in tunnel engineering; Seriously, it will cause huge safety accidents, threatening the lives and property safety of construction workers.

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