Self-balanced double-wall box cofferdam for canal side slope

Abstract

The invention discloses a self-balanced double-wall box cofferdam for a canal side slope. The self-balanced double-wall box cofferdam comprises a straight guide foundation; inclined guide foundationsmatched with inclination angle of the side slope are arranged at two ends of the straight guide foundation, and the straight guide foundation and the inclined guide foundations are molded integrally to form a cofferdam foundation; slots with upwards openings are arranged on the periphery of the cofferdam foundation, a plurality of barrier plates connected in sequence are inserted in the slots respectively, the adjacent barrier plates as well as the barrier plates and the bottoms of the slots are connected hermetically, the barrier plates connected end to end to encircle to form a containing cavity with an upwards opening, and the containing cavity is filled with counter weights; the barrier plates on the two inclined guide foundations extend upwards to the side slope to form a constructionspace, and outer support arms used for being connected to the side slope are arranged on the barrier plates in the construction space. According to the self-balanced double-wall box cofferdam, inclination angle and height of the cofferdam can be regulated conveniently to meet needs of different actual engineering, and accordingly the cofferdam is easy and convenient to operate without influence on normal running of the canal, is economic and safe, and has good stability.

Description

technical field [0001] The invention belongs to the technical field of repairing cracks on canal side slopes, in particular to a self-balancing double-wall box cofferdam for canal side slopes. Background technique [0002] Due to uneven settlement and other reasons during the operation of the canal, a large number of slope cracks often occur in the lining of the slope. The existence of side slope cracks will cause water seepage on the slope, which seriously affects the safe operation of the canal. is a technical problem. [0003] At present, the commonly used methods for repairing the cracks on the side slope of the channel are: divers directly carry out underwater operation to repair the cracks on the side slope, but the repair work is difficult, time-consuming and labor-intensive, and can only repair some small side slope cracks, which has great limitations; A traditional steel box cofferdam was built on the site as a water retaining structure to provide construction spac...

AI Technical Summary

Problems solved by technology

[0002] Due to uneven settlement and other reasons during the operation of the canal, a large number of slope cracks often occur in the lining of the slope. The existence of side slope cracks will cause water seepage on the slope, which seriously affects the safe operation of the canal. is a technical problem

[0003] At present, the commonly used methods for repairing the cracks on the side slope of the channel are: divers directly carry out underwater operation to repair the cracks on the side slope, but the repair work is difficult, time-consuming and labor-intensive, and can only repair some small side slope cracks, which has great limitations; Build a traditional steel box cofferdam as a water retaining structure to provide construction space for workers to repair slope cracks

However, due to the water pressure of the steel box cofferdam, it is difficult for the steel box cofferdam to achieve force balance at the cracks of the slope. Box cofferdam top covered with heavy objects

It is inconvenient to operate when placing heavy objects, and hoisting equipment is required, and a bottom plate for placing heavy objects is also installed on the top of the steel box cofferdam, which brings a lot of inconvenience to the construction

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