Stacked multi-layer rubber bag sealing structure capable of meeting large gap requirement and use method thereof

Abstract

The invention discloses a stacked multi-layer rubber bag sealing structure capable of meeting a large gap requirement. The structure comprises an inner layer rubber bag, middle stackable rubber bags,an outer layer rubber bag, an outer layer rubber bag core bag, an inflation tube, an outlet one-way valve, a lengthening tube, an inner layer bag sealing gasket, a middle bag sealing gasket, an outerlayer bag sealing gasket, an inflation tube pressure gauge, an outlet one-way valve pressure gauge, a rubber bag pipe penetrating hole and a duct piece. The stacked multi-layer rubber bag structure isassembled according to an inner layer, a middle layer and an outer layer, the inner layer rubber bag is fixed in a duct piece mounting groove, the outer layer rubber bag is attached to a surroundingrock, and the number of the middle stackable rubber bags is determined according to actual needs. According to the structure, a large gap between the shield type TBM duct piece and the surrounding rock can be rapidly and effectively sealed, so that the blocking and sealing requirements of backfill grouting are met.

Description

technical field [0001] The invention relates to the field of deformation control of surrounding rock in underground engineering, in particular to a rapid support structure and construction method for surrounding rock of tunnel excavation pipe slices. Background technique [0002] After the rock mass is excavated in the tunnel (cave) project, the surrounding rock is deformed due to the readjustment of the stress. During the construction process, the shield TBM acts as a temporary support for the unlined excavated tunnel section, bears the pressure of the surrounding soil layer, and sometimes bears the groundwater pressure and keeps the groundwater out. After the excavation, the segments are spliced ​​quickly to form a ring, and the space between the segment and the surrounding rock is backfilled with grout to achieve the purpose of surrounding rock support. At the same time, in the actual construction process, the bean gravel and mortar stuck to the TBM equipment during the ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a stacked multi-layer rubber bag closure structure that can meet the large gap requirements. In the shield-type TBM segment expansion rubber bag support structure, it can solve the problem of tunnel construction in the above-mentioned background technology. There is a need for a large gap between the sheet and the surrounding rock, the rubber bladder is damaged and there is no backup measure, and the pressure inside the mold bag cannot be monitored in real time.

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