CN212561431U

CN212561431U - Underwater repair device for bottom plate of stilling pool

Info

Publication number: CN212561431U
Application number: CN202020715258.0U
Authority: CN
Inventors: 练继建; 燕翔; 刘润; 练冲; 刘昉; 王孝群
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-02-19
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses an underwater repairing device for a bottom plate of a stilling pool, which comprises a device body, wherein the device body consists of a hollow cylinder body with a closed top and an open bottom, and a tower barrel which covers the top end of the cylinder body and is communicated with the cylinder body; the top cap downside of barrel is provided with six branch storehouse boards of equalling divide the barrel around the barrel centre of a circle is fixed at least, is provided with the intercommunication valve with the inside intercommunication of barrel on the top cap between each branch storehouse board, and the skirt bottom mounting of barrel is provided with the sealing washer. The utility model aims at providing a can carry out the construction under water and restore, simplify the construction flow, improve the prosthetic efficiency of absorption basin bottom plate, realize the prosthetic devices under water of the dry storehouse construction of absorption basin bottom plate.

Description

Underwater repair device for bottom plate of stilling pool

Technical Field

The utility model relates to a hydraulic engineering technical field especially relates to a stilling pool bottom plate prosthetic devices under water.

Background

The hydropower industry in China develops rapidly, and a large amount of high dam large storehouses are built and put into production for operation. At present, more than 30m reservoir dams with more than 200 seats are built in China, wherein more than 100m dams with more than 200 seats, and a good operation and maintenance mechanism is a main problem which needs to be concerned in development of the future hydropower industry.

In many hydraulic buildings, stilling ponds are one of the indispensable elements. The stilling pool plays a role in eliminating the energy of the downward-discharging water flow during the flood discharge, and the stability of the stilling pool is the key for realizing energy dissipation and impact prevention. Due to the high-speed water flow and the complexity of interaction with the structure, the absorption basin has been seriously damaged at home and abroad, such as the absorption basin bottom plate of Sayano-Shushenskaya of the former Soviet Union, Libby of the United states, Bhakra of India, Malpaso of Mexico and hydropower stations of Wuqiangxi, Ankang, fishpond and the like of China. Therefore, an effective stilling pool bottom plate repairing technology is one of the more concerned subjects in academic and engineering circles.

The stilling pool is usually in a water state, if dry construction is adopted, the water in the stilling pool must be discharged, the construction progress is slow, the normal operation of a hydropower station is seriously influenced, and the cost is high. Accordingly, some subsea repair materials such as PBM polymers, SR barrier modules, SXM subsea sealants, etc. have been proposed and used in succession. However, the above-mentioned techniques and materials only guarantee underwater construction to a certain extent, but the cost is still high and the techniques are still immature. At present, no efficient and low-cost construction technology is available for effectively solving the problem of underwater repair of the stilling pool bottom plate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the above-mentioned prior art, aim at providing one kind and can carry out the construction under water and restore, simplify the construction flow, improve the prosthetic efficiency of absorption basin bottom plate, realize the prosthetic devices under water of the dry storehouse construction of absorption basin bottom plate.

In order to achieve the purpose, the utility model is realized by the following technical proposal:

an underwater repairing device for a bottom plate of a stilling pool comprises a device body, wherein the device body is composed of a hollow cylinder body with a closed top and an open bottom and a tower barrel which covers the top end of the cylinder body and is communicated with the cylinder body; the top cap downside of barrel is provided with six branch storehouse boards of equalling divide the barrel around the barrel centre of a circle is fixed at least, is provided with the intercommunication valve with the inside intercommunication of barrel on the top cap between each branch storehouse board, and the skirt bottom mounting of barrel is provided with the sealing washer.

Further, the diameter of the cylinder is 5m-30m, the height of the apron board of the cylinder is 2m-7m, and the bin distribution plate is 0.2m-0.5m shorter than the apron board of the cylinder.

Further, the diameter of the cylindrical part of the tower barrel is 2m-6 m.

Further, the cylinder and the tower barrel are both made of steel.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses realize dry storehouse construction under the unchangeable condition of assurance absorption basin water level, greatly simplified the construction flow, improve the efficiency of construction. Firstly, when the water body is pumped out of the cylinder, the pressure of the water body is skillfully utilized to apply pressure to the cylinder, so that the cylinder, the water stopping pool and the surface layer of the absorption basin are tightly combined, and a good water sealing effect is achieved; the interior of the cylinder body is divided into bins, and the sinking, floating and leveling work of the cylinder body are realized by changing the air pressure in the bins, so that the reutilization of the cylinder body and the convenience of construction are realized; in addition, utilize a tower section of thick bamboo to carry out the discrepancy of personnel, material, it is more swift effective. In a word, the device and the method do not need to discharge water in the absorption basin, realize the underwater repair of the absorption basin flushing pit, have simple design and manufacture, have the recycling function and have good application prospect.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

FIG. 2 is a schematic top view of the structure of FIG. 1;

FIG. 3 is a schematic structural diagram of the steps of the construction repairing method of the present invention;

FIG. 4 is a schematic structural diagram of the second step of the construction repair method of the present invention;

FIG. 5 is a schematic structural diagram of the third step of the construction repair method of the present invention;

FIG. 6 is a schematic structural diagram of the procedure IV of the construction repairing method of the present invention;

FIG. 7 is a schematic structural view of a fifth step of the construction repair method of the present invention;

fig. 8 is a schematic structural diagram of the steps of the construction repair method of the present invention.

Reference numerals:

1-cylinder, 2-sealing ring, 3-bin plate, 4-communicating valve, 5-tower, 6-material conveying ship, 7-concrete pier, 8-pit, 9-side wall, 10-stilling pool and 11-stilling pool bottom plate.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and 2, the underwater restoration device for the floor of the stilling pool comprises a device body, wherein the device body is composed of a hollow cylinder body 1 with a closed top and an open bottom, and a tower cylinder 5 which covers the top end of the cylinder body 1 and is communicated with the cylinder body 1; at least six bin dividing plates 3 for equally dividing the barrel 1 are fixedly arranged on the lower side of the top cover of the barrel 1 around the circle center of the barrel 1, a communicating valve 4 communicated with the interior of the barrel 1 is arranged on the top cover between the bin dividing plates 3, and a sealing ring 2 is fixedly arranged at the bottom end of a skirt of the barrel 1; the diameter of the cylinder body 1 is 5m-30m, the diameter of the cylinder body 1 in the embodiment is 10m, the apron board height of the cylinder body 1 is 2m-7m, the apron board height in the embodiment is 4m, the bin distributing plate 3 is 0.2m-0.5m shorter than the apron board of the cylinder body 1, and the bin distributing plate 3 in the embodiment is 0.2m shorter than the bottom end of the cylinder body 1; the diameter of the columnar part of the tower tube 5 is 2m-6m, the diameter of the tower tube 5 in the embodiment is 4m, and the height is 18 m; the barrel 1 and the tower tube 5 are both made of steel.

The utility model discloses a construction repair method, the step is as follows:

firstly, as shown in fig. 3, the position of a flushing pit 8 in a bottom plate 11 of the absorption basin to be repaired is detected in advance, a prefabricated barrel structure is arranged at the junction of the flushing pit 8 in the absorption basin 10 and the bottom plate 11 of the absorption basin, and each communicating valve 4 is opened to enable water to freely sink in the barrel 1.

Secondly, as shown in fig. 4, the cylinder body 1 is sunk to the bottom of the stilling pool 10, more than half of the projection area of the bottom end of the cylinder body 1 is positioned on a stilling pool bottom plate 11, the bottom end area of the skirt board of the cylinder body 1 which is not supported on the stilling pool bottom plate 11 is grouted by a material conveying ship 6, a concrete pier supported between the bottom end of the skirt board of the cylinder body 1 and a flushing pit 8 is formed, and finally the cylinder body 1 is balanced, so that the sealing ring 2 at the bottom end of the skirt board of the cylinder body 1 is completely attached to the stilling pool bottom plate 11 and the concrete pier 7.

Thirdly, as shown in fig. 5, each communicating valve 4 on the top cover of the cylinder body 1 is opened, a water pipe is placed through the tower cylinder 5 to pass through the valve to the bottom of the flushing pit 8, the sealing ring 2 and the water body in the area of the flushing pit 8 surrounded by the bottom plate 11 of the stilling pool and the concrete pier 7 are pumped out, air enters the cylinder body 1 from the top end of the tower cylinder 5 until the cylinder body 1, the tower cylinder 5 and the water body in the flushing pit 8 are completely pumped out, a dry chamber bin is formed between the bin plates 3 in the cylinder body 1, water buoyancy is overcome through the self weight of the device body and the water pressure of the water body to the curved surface at the bottom of the tower cylinder 5, the device is always submerged at the bottom of the stilling pool 10, the cylinder body 1 is continuously pressurized by the external water body, the pressure of the sealing ring 2 is continuously compacted, and the sealing ring 2 is in sealing contact with the bottom plate 11.

And fourthly, as shown in fig. 6, conveying constructors and building materials from the top end of the tower 5 to the barrel 1 on the water surface of the stilling pool 10 through the material conveying ship 6, performing dry warehouse construction, and performing repair work.

Fifthly, as shown in fig. 7, after the restoration is completed, personnel, materials and equipment are transported out through the tower tube 5, a water pump is used for filling water into the barrel 1 until the water surface height in the tower tube 5 is consistent with the water surface height of the external stilling pool 10, the sealing between the sealing ring 2 and the stilling pool bottom plate 11 is relieved, then air pumps are connected to the communication valves 4 on the top cover of the barrel 1, high-pressure air is simultaneously pressed into the communication valves 4 through the air pumps, the high-pressure air positioned at the top of the barrel 1 is used for continuously extruding the water on the lower side of the barrel 1 until the water on the bottom is extruded out of the bottom of the barrel 1.

Sixthly, as shown in fig. 8, the gas in the cylinder 1 with the closed top is continuously increased by continuously pressing high-pressure gas into the cylinder 1, the buoyancy applied to the device body is increased by continuously pressing and discharging the water in the cylinder 1, the integral floating of the device is kept by controlling the gas amount in the cylinder 1, and the device is towed to the next repairing point by a towing ship to repair after the integral floating to the water surface.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a stilling pool bottom plate is prosthetic devices under water, includes the device body, its characterized in that: the device body consists of a hollow cylinder with a closed top and an open bottom and a tower barrel which covers the top end of the cylinder and is communicated with the cylinder; the top cap downside of barrel is provided with six branch storehouse boards of equalling divide the barrel around the barrel centre of a circle is fixed at least, is provided with the intercommunication valve with the inside intercommunication of barrel on the top cap between each branch storehouse board, and the skirt bottom mounting of barrel is provided with the sealing washer.

2. The underwater floor restoration device of a stilling pool as claimed in claim 1, wherein: the diameter of the cylinder is 5m-30m, the height of the apron board of the cylinder is 2m-7m, and the bin distribution plate is 0.2m-0.5m shorter than the apron board of the cylinder.

3. The underwater floor restoration device of a stilling pool as claimed in claim 1, wherein: the diameter of the cylindrical part of the tower barrel is 2m-6 m.

4. The underwater floor restoration device of a stilling pool as claimed in claim 1, wherein: the barrel and the tower barrel are both made of steel.