Anti-collapse device for water conservancy project construction excavation

Abstract

The invention discloses an anti-collapse device for water conservancy project construction excavation. The anti-collapse device comprises a support component and a protection component. The protectioncomponent includes an operation platform frame, a steel plate protective cover located above the operation platform frame and an electric lifting mechanism fixedly installed on the operation platformframe. The operation platform frame is composed of a vertical bracket and a horizontal panel; several supporting structures are arranged between the vertical bracket and the steel plate protective cover; each supporting structure includes a slider, a stopping block, a telescopic rod and a compression spring; a plurality of support rods are arranged between the slider and the steel plate protective cover; and one end of each support rod is fixedly connected to the edge of the steel plate protective cover, and the other end of the support rod is hinged with the slider. By means of the anti-collapse device, a protective component is used for providing an operating platform and an operating space for construction personnel; and meanwhile, the protective component is used for ensuring the construction safety of the construction personnel in a base trench.

Description

technical field [0001] The invention belongs to the technical field of hydraulic engineering construction equipment, and in particular relates to an excavation anti-collapse device for hydraulic engineering construction. Background technique [0002] The footings of existing dams are generally built on the river bed. During specific construction, it is necessary to excavate the foundation pit of the concrete dam in the river bed. Because there is often flowing water in the river, different from the foundation pits of houses, the geology of the foundation pits of dams often has springs or silt layers. The existing temporary construction support methods generally use steel pipe piles, steel sheet piles or even temporary walls to support the foundation pit of the dam. The damage and impact caused by the construction support, especially the damage to the temporary construction support after the foundation pit suffered heavy rain, resulting in partial collapse of the foundation...

AI Technical Summary

Problems solved by technology

The existing temporary construction support methods generally use steel pipe piles, steel sheet piles or even temporary walls to support the foundation pit of the dam. The damage and impact caused by the construction support, especially the damage to the temporary construction support after the foundation pit suffered heavy rain, resulting in partial collapse of the foundation pit, and the technical experts in the industry have never given up research on such issues

[0003] The current excavation of foundation pits generally adopts mechanical excavation, but based on the construction requirements of "mechanical excavation, over-excavation is strictly prohibited", the local corners and slopes of the foundation pit must be manually excavated and corrected

For this reason, the partial subsidence of the aforementioned foundation pit is likely to cause safety hazards to workers and has great potential safety hazards.

However, for such safety risk sources, the existing technology is still unable to assess and control all danger sources, and only avoid them as much as possible, so there is a great potential safety hazard

Images