Underwater manhole waterproof sealing cover plate structure and construction method thereof

Abstract

The invention discloses an underwater manhole waterproof sealing cover plate structure and a construction method thereof. The underwater manhole waterproof sealing cover plate structure comprises channel steel buried in a concrete beam on the periphery of a manhole, the manhole is covered with a waterproof cover plate buckled with a channel steel table opening, a containing chamber is defined by the edge of the waterproof cover plate and the channel steel table opening, and the waterproof cover plate and the channel steel are connected in a fastening mode after a fastener penetrates through the containing chamber; a waterproof concrete cover plate covers the waterproof cover plate, so that the whole cover plate structure forms a waterproof sealing system. Compared with a traditional sealing cover plate, the sealing cover plate is simple in structure, convenient to construct and good in durability, and the defects that a common sealing cover plate needs to be maintained frequently and cannot bear water flow force and pulsating pressure generated by flood washing are overcome; meanwhile, the sealing cover plate is of a concrete profile steel structure, concrete provides protection for profile steel, the profile steel provides support for the concrete, and the combined structure of the concrete and the profile steel is good in resistance effect, high in safety and capable of being buried underwater for a long time.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower, in particular to an underwater manhole waterproof sealing cover plate structure and a construction method thereof. Background technique [0002] In order to integrate the surrounding natural landscape, the water conservancy project hides the buildings underwater. The gate is generally driven by the bottom shaft, but due to the force of the structure and the limitation of the capacity of the opening and closing equipment, the width of the gate is generally controlled at about 100 meters. If the river surface is wider (exceeding the gate length), a multi-hole gate needs to be arranged. Therefore, a gate pier (the top elevation is lower than the operating water level) needs to be installed in the river channel, and a hoisting machine room is installed in the gate pier, and the hoisting machine room is equipped with hoisting and closing equipment. . The hydraulic cylinder o...

AI Technical Summary

Problems solved by technology

The structure size of the conventional sealing cover or sealing door is small, which cannot meet the sealing requirements of the opening of about ten meters; and the frequency of use of the inspection hole is low, often lasting more than ten years, and the water sealing of the conventional sealing cover or sealing door is easy. Ineffective, the steel cover plate is easy to corrode and requires frequent maintenance; at the same time, the sluice needs to discharge flood every year, and the flood velocity is high, which puts forward higher requirements for the conventional maintenance door to withstand the pulsating pressure and impact force

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