Gate water-stop dam face unevenness underwater measuring device and method

Abstract

The invention discloses a gate water-stop dam face unevenness underwater measuring device and method. In specific, the measuring device is a measuring frame, uniformly ranked measuring needles are arranged on a portion, corresponding to a gate water-stop dam face, of a downstream face of the measuring frame, and the measuring needles are movably connected with the measuring frame and can telescope along the direction perpendicular to the dam face. The measuring method includes steps of achievement of deepwater guide in-placement of the measuring frame, measurement, data analysis and the like. After the measuring frame is put in place, the measuring needles are pushed along the direction perpendicular to the dam face and pulled out of the water surface after tightening and fixing, a curved surface formed by the measuring needles is the water-stop dam face to be blocked, measurement data of the measuring needles are analyzed and processed to obtain dam face unevenness within a water-stop zone, and the unevenness can be used as a basis for designing a floating gate water seal, so that the basis problem of designing the floating gate water seal is solved. According to the gate water-stop dam face unevenness underwater measuring device and method, a plurality of novel techniques such as a gilling truss structure, deepwater guide in-placement, and one-step modeling of thousands of unevenness height values within the range of the water-stop zone are created in design.

Description

technical field [0001] The invention belongs to the technical field of hydropower station maintenance, and relates to a measurement method, in particular to an underwater measurement device and measurement method for the unevenness of a sluice stop dam surface. Background technique [0002] After many years of operation of the hydropower station and the erosion of sand-entrained water, some discharge structures have been damaged. If they are not repaired in time, the operation safety of the power station will be directly affected. However, these scuppers or drains are located tens or even hundreds of meters underwater, and the construction is difficult. Currently, the technology adopted is to design a floating maintenance gate on the upstream dam surface outside the bell mouth of the drain hole or the inlet of the drain. , Create dry land construction conditions for the repair of damaged parts. [0003] The technical key to the blockage of the floating gate of the release c...

AI Technical Summary

Problems solved by technology

[0002] After years of operation of the hydropower station and the erosion of sand-entrained water, some discharge structures have been damaged. If they are not repaired in time, the operation safety of the power station will be directly affected

However, these scuppers or drains are located tens or even hundreds of meters underwater, and the construction is difficult. Currently, the technology adopted is to design a floating maintenance gate on the upstream dam surface outside the bell mouth of the drain hole or the inlet of the drain. , to create dry land construction conditions for the repair of damaged parts

[0003] The technical key to the blockage of the floating gate of the release channel is the water-stopping effect of the gate, and the water-stop surface of the floating gate of most large and medium-sized hydropower station's scupper and discharge channel restoration projects is due to the construction quality problems at that time, or due to the long-term erosion and erosion of the water flow. , there are local pits, bosses and penetrating grooves, bumps and other defects that cause the unevenness of the dam surface. Such dam surface defects will affect the water sealing effect of the floating gate, thereby affecting the quality of the repair project

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