Temporary access gallery structure and whole-period construction method thereof

Abstract

The invention discloses a temporary access gallery structure and a whole-period construction method thereof. The temporary access gallery structure comprises a gallery main body, wherein the extending-direction section of the gallery main body is trapezoidal; the gallery main body comprises a gallery outer port and a gallery inner port, which are formed in the two ends, wherein the gallery outer port and the gallery inner port penetrate through each other, and the mutual penetrating-direction section of the gallery outer port or the gallery inner port is trapezoidal, the gallery inner port communicates with an in-dam gallery, and the gallery outer port is connected with a behind-dam platform channel to form a temporary safety traffic channel inside and outside a dam body; a water stop sheet is arranged at the periphery of the gallery outer port or the gallery inner port; a layer of reinforcing meshes is separately arranged on each of the two side walls and the top plate of the gallerymain body; and each reinforcing mesh comprises a vertical stressed reinforcing steel bar and a horizontal distributed reinforcing steel bar which are mutually connected. The method comprises the following steps of: clearing a basic plane, measuring and sampling, erecting an edge wall and a top plate scattered steel template, binding reinforcing meshes at the side walls and the top plate, embeddingthe water stop sheets, forming key slots, clearing a bin, checking and accepting, pouring concrete, dismounting the scattered steel template, and moisturizing and curing.

Description

technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering, and in particular relates to a temporary traffic corridor structure applied after a gravity dam and a full-term construction method thereof. Background technique [0002] In recent decades, roller compacted concrete dams have developed rapidly, and the design and construction techniques have been perfected and matured. RCC dams are mostly built in the alpine valleys of rivers. Due to the dam foundation, the curtain grouting of the left and right bank abutments, the drainage of the dam body, the operation and maintenance, and the structural requirements of the dam body, it is necessary to set up grouting corridors and drainage channels in the dam body. Corridors and safety monitoring corridors, etc., and many corridors are combined to play a role; one corridor can be set up for low dams, and 2 to 3 corridors can be set up for medium and high dams, and the grouting corrid...

AI Technical Summary

Problems solved by technology

[0003] Generally, in the early stage of RCC dam construction, the slope corridors on the left and right banks have not been fully formed or the passage is not smooth, especially for some mechanical equipment for grouting, corridor dredging, construction waste, safety monitoring and operation and maintenance, etc. The traffic is very inconvenient. In order to solve the problems of grouting equipment, monitoring facilities, cleaning and transportation of construction waste, and inconvenient passage for personnel in the corridor of the dam roller compacted concrete dam, the inventor considered setting up a temporary Traffic corridor, the inner port of the traffic corridor is connected with the grouting corridor or drainage corridor or traffic corridor in the dam, and the outer port is connected with the platform channel behind the dam, forming a temporary safe passage inside and outside the dam body, which will be used in the later stage of the dam Choose an opportunity to permanently block before water storage

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