CN211421046U - Seepage-proofing and water-stopping structure for channel cofferdam equipment - Google Patents

Abstract

The utility model discloses an anti-seepage and water-stopping structure for channel cofferdam equipment, wherein a cofferdam area (2) is enclosed between the cofferdam equipment (1), and the cofferdam equipment (1) on each side A water bag (3) is arranged on the lower part of the side wall of the water-facing side of the water bag, and a chain tape (8) is pasted on the surface of the water bag (3), and one end of the chain tape (8) protrudes and passes through the pressing plate (4). ) and bolts (6) are fixed with the cofferdam equipment (1); the water bladders (3) on the adjacent walls are connected by the zipper-type rubber pad (7). It overcomes the shortcomings of the prior art that the rubber arranged at the bottom of the cofferdam frequently contacts and rubs against the canal bottom, which causes the rubber to be aged or damaged in advance, and affects the overall effect of anti-seepage and water-stopping. In order to avoid the damage caused by the friction with the channel, the service life can be as long as 10 years.

Description

An anti-seepage and water-proof structure for channel cofferdam equipment

technical field

The utility model relates to the technical field of water retaining in water conservancy projects, in particular to an anti-seepage water-stopping structure for channel cofferdam equipment.

Background technique

For the cofferdam water stop, there are currently two methods: gravity water stop and anchored water stop; gravity water stop adopts a layer of watertight rubber at the bottom of the steel cofferdam equipment. When the cofferdam sinks to the bottom, it passes through the upper containment. The weight of the weir squeezes the rubber and presses the bottom of the channel to achieve the effect of preventing seepage and preventing water. The anchored water-stop water bag or air bag serves as the main body of the cofferdam and the water-stop structure at the same time. By presetting the base at the bottom of the canal, and using the anchoring device to fix the bag body on the base, it is closely connected with the canal bottom to achieve the water-stop effect. .

For the seepage and water prevention of the cofferdam equipment in the channel, the above two methods have certain problems and shortcomings:

①. When the gravity water stop method is adopted, since the rubber at the bottom of the cofferdam plays a supporting role at the same time, hard rubber needs to be selected, and the compression amount is less than 30%. Defects such as leveling and partial misalignment, the height difference can reach 1cm, and the rubber compression cannot handle the defects at the bottom of the canal, which will cause rubber damage.

②. Gravity water stop is generally used in the water depth range of 3m. For larger water depth, the rubber at the bottom of the cofferdam will be increased by the pressure of the water, which will cause the rubber to deform laterally, and affect the water stop effect and cause damage to the rubber.

③. The rubber set at the bottom of the gravity-type water-stop cofferdam frequently contacts and rubs against the canal bottom, which causes the rubber to age or damage in advance, which affects the overall effect of anti-seepage and water-stopping.

④. When the anchored water stop method is adopted, the base needs to be preset in the lining board at the bottom of the canal, and the lining board should be reconstructed. However, most of the lining boards of the diversion canal cannot be damaged, and the anchored water stop method is not applicable at this time.

⑤. The water-stopping method of anchoring the bag body acts as a cofferdam structure, and the size of the water bag or air bag is limited, and the diameter is generally less than 2m, so the water depth of this water-stop method is generally less than 2m, and the applicable surface is narrow.

SUMMARY OF THE INVENTION

The purpose of the present utility model is to overcome the shortcomings of the above-mentioned background technology, and propose a seepage-proof and water-stopping structure for channel cofferdam equipment.

The purpose of this utility model is implemented through the following technical solutions: an anti-seepage and water-stopping structure for channel cofferdam equipment, which includes cofferdam equipment, a cofferdam area, a water bladder, a pressure plate, a connecting tape, bolts, a zipper type Rubber pads, chain tapes and bearing blocks;

The cofferdam equipment is surrounded by a cofferdam area, and a water bag is provided at the lower part of the side wall of the water-facing side of the cofferdam equipment on each side. One end of the type tape sticks out and is fixed with the cofferdam equipment by pressing plates and bolts;

The water bladders on the adjacent wall surfaces are connected by the zipper-type rubber pad.

In the above technical solution: a pressure-bearing block is arranged at intervals between the bottom of the cofferdam equipment and the channel lining plate.

In the above technical solution: the cofferdam equipment can be spliced into a "U" shape or a "┗┛" shape with one end open, or a "□" shape fully closed; the water bladder has three or 4.

The utility model has the following advantages: 1. The utility model uses the water-filled water bladder as the water-stopping structure, and the shape has high fluidity. For the defect of the 1cm height difference at the bottom of the canal, the water bladder can adapt to its shape to achieve the effect of preventing seepage and preventing water. .

2. The utility model adopts the cofferdam equipment made of steel structure, and the water bladder is fixed on the side of the cofferdam to provide the anti-seepage and water-stop effect of the contact part between the cofferdam and the bottom of the canal, and will not be affected by the deformation caused by the water pressure. water effect.

3. The water bag of the utility model is not squeezed by the cofferdam equipment, and uses the water pressure to make the water bag close to the bottom of the canal, avoiding damage caused by rubbing against the canal, and the service life can be as long as 10 years.

4. The water bladder of the utility model is riveted to the cofferdam structure by bolts, with few connection points, convenient installation and disassembly.

⑤ The water bladder material of the utility model can be made of polytetrafluoroethylene, which has excellent corrosion resistance, good elasticity and tightness, high strength, and is suitable for deep water levels.

Description of drawings

Figure 1 is a cross-sectional view of the water-stop structure of the water bladder of the cofferdam equipment of the present invention.

FIG. 2 is a schematic structural diagram of the fixing mode of the water bladder in the utility model.

Figure 3 is a schematic diagram of the water stop structure of the water bladder connection part in the utility model.

Figure 4 is a schematic structural diagram of the pressure-bearing block of the cofferdam equipment in the utility model.

In the figure: cofferdam equipment 1, cofferdam area 2, water bladder 3, pressure plate 4, connecting tape 5, bolt 6, zipper pad 7, chain tape 8, pressure-bearing block 9.

Detailed ways

The implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present utility model, but are only examples; meanwhile, the advantages of the present utility model will become clearer and easier to understand through the description.

Referring to Figures 1-4: an anti-seepage and water-proof structure for channel cofferdam equipment, which includes cofferdam equipment 1, cofferdam area 2, water bladder 3, pressure plate 4, connecting tape 5, bolt 6, zipper type Rubber pad 7, chain tape 8 and pressure block 9;

The cofferdam equipment 1 is surrounded by a cofferdam area 2, a water bladder 3 is provided on the lower part of the side wall of the water-facing side of the cofferdam equipment 1 on each side, and the surface of the water bladder 3 is pasted with a chain tape 8. One end of the chain tape 8 stretches out and is fixed with the cofferdam equipment 1 through the pressing plate 4 and the bolt 6;

The water bladders 3 on adjacent walls are connected by the zipper-type rubber pad 7 .

A pressure-bearing block 9 is arranged at intervals between the bottom of the cofferdam equipment 1 and the channel lining plate.

The cofferdam equipment 1 can be spliced into a "U" shape or a "┗┛" shape with one end open, or a "□" shape fully closed; the water bladders 3 have three or four.

Referring to Figures 1-4, the specific use process of the technical solution of the present utility model is as follows:

①. Install the cofferdam equipment 1 on the water with the help of a crane. The cofferdam equipment 1 is in the shape of "┗┛" with one end open, and three water bladders 3 need to be installed.

②. Install the water bladder 3 on the side wall of the cofferdam equipment 1, align the holes of the pressure plate 4, the water bladder 3 and the connecting tape 5, and tighten and fix it with the side wall of the cofferdam equipment 1 through the bolts 6.

3. The contact parts between the water bladders 3 described on the adjacent two sides are connected with a circle of chain adhesive tapes 8 provided on the water bladder 1 by zipper-type rubber pads 7, and the width of the zipper-type rubber pads 7 is slightly larger than that of the water bladder. 3, when the water bladder 3 is submerged in the water, the zipper-type rubber pad 7 is closely attached to the water bladder 3 under the influence of water pressure, and the gap is filled to achieve a watertight sealing effect.

④. Use the ballast pump to fill the water bladders 3 with water, and the water bladders 3 are inflated.

⑤. Move the cofferdam equipment 1 to the designated cofferdam area 2, and the cofferdam equipment 1 sinks into place.

⑥. Pump water to the cofferdam area 2, and the water bladder 3 is communicated with the cofferdam area 2 through the pressure-bearing blocks 9 arranged at intervals at the bottom of the cofferdam equipment 1. The inner and outer sides of the cofferdam equipment 1 form negative pressure, and the water bladder 3 is blocked. Compression to achieve anti-seepage and water-proof effect.

The parts not described in detail above are all prior art.

Claims (3)

1. an anti-seepage and water-stop structure for channel cofferdam equipment, characterized in that: it comprises cofferdam equipment (1), a cofferdam area (2), a water bladder (3), a pressure plate (4), a connecting tape ( 5), bolts (6), zipper pads (7), chain tapes (8) and pressure blocks (9); A cofferdam area (2) is enclosed between the cofferdam devices (1), and a water bladder (3) is provided at the lower part of the side wall of the water-facing side of the cofferdam device (1) on each side. A chain tape (8) is attached to the surface of the bag (3), and one end of the chain tape (8) protrudes and is fixed to the cofferdam device (1) by a pressing plate (4) and a bolt (6); The water bladders (3) on the adjacent wall surfaces are connected by the zipper-type rubber pad (7). 2. A seepage-proof and water-stopping structure for channel cofferdam equipment according to claim 1, characterized in that: a pressure-bearing block ( 9). 3. A seepage-proof and water-stop structure for channel cofferdam equipment according to claim 1 or 2, characterized in that: the cofferdam equipment (1) can be spliced into a "U" shape or "┗┛" One end of the shape is open, or the "□" shape is completely closed; the water bladder (3) has three or four.

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