Rapid continuous construction method for diversion tunnel temporary plug

Abstract

The invention provides a rapid continuous construction method for a diversion tunnel temporary plug, and relates to a building construction method, in particular to a rapid continuous construction method for diversion tunnel temporary plug concrete used in the process of hydropower engineering construction. The construction method comprises the main steps that (1) scaffolds are built inside and outside a pouring cabin before constructing of the temporary plug concrete; (2) the two sides of the scaffolds inside the pouring cabin are adjacent to two concrete sidewalls; (3) an end formwork of the diversion tunnel temporary plug concrete uses a standard combined steel formwork; (4) the temporary plug concrete is constructed through temperature control; (5) pouring of the concrete on the top of the cabin is conducted; and (6) the concrete is conveyed into the top of the cabin through a concrete pump, the cabin is leveled and vibrated by labors, and a standby concrete conveying tail pipe is arranged. According to the rapid continuous construction method for the diversion tunnel temporary plug, the construction time is effectively shortened, and the construction conditions on a work site are improved.

Description

technical field [0001] The invention relates to a building construction method, in particular to a method for rapid and continuous construction of concrete for temporary plugging of diversion tunnels in the construction process of hydropower projects. Background technique [0002] During the construction of the hydropower station, as the gate is gradually lowered, the water level will become higher and higher. In order to prevent the gate from being leaked or even damaged under high water level conditions, it will pose a threat to the safety of the construction personnel in the cave, and even cause the hydropower station to fail. The failure of the lower sluice to store water has brought immeasurable losses. The current construction method is generally to add temporary plugs upstream of each diversion tunnel, but there are some technical difficulties in the construction of the temporary plugs at present. Later, the reservoir began to store water at the initial stage. As the ...

AI Technical Summary

Problems solved by technology

[0002] During the construction of the hydropower station, as the gate is gradually lowered, the water level will become higher and higher. In order to prevent the gate from being leaked or even damaged under high water level conditions, it will pose a threat to the safety of the construction personnel in the cave, and even cause the hydropower station to fail. The failure of the lower sluice to store water has brought immeasurable losses. The current construction method is generally to add temporary plugs upstream of each diversion tunnel, but there are some technical difficulties in the construction of the temporary plugs at present. Later, the reservoir began to store water at the initial stage. As the water level rose, the water level of the reservoir also rose rapidly. The safety problem of the construction was very prominent, and the construction period was also very tight. In addition, the bottom of the diversion tunnel outlet was heavily silted, which made the construction of the cofferdam more difficult. , pumping and draining and dredging in the cave takes a long time, which also increases the tension during the construction period, and the conditions of the processing and construction site are poor, so it is quite difficult to use temporary plugs