CN215329724U

CN215329724U - Anti-scouring and anti-vibration bidirectional water-retaining rubber dam for severe cold area

Info

Publication number: CN215329724U
Application number: CN202120592878.4U
Authority: CN
Inventors: 郭伟; 高鑫; 任宇晓; 曾文倩; 黄俊绚; 于克深
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-12-28
Anticipated expiration: 2031-03-24

Abstract

The utility model discloses an anti-scouring and anti-vibration bidirectional water-retaining rubber dam for severe cold areas, which comprises a concave foundation slab poured at a riverbed, wherein a rubber dam bag is installed in a groove in the middle of the foundation slab in a through-length manner, the left side and the right side of the rubber dam bag are fixed by double anchoring lines, and the front end and the rear end of the rubber dam bag are sealed and waterproof by adopting a plug type structure; the rubber sheets are arranged at equal intervals along the axial direction of the rubber dam, and a plurality of side grooves are formed in two sides of the groove of the foundation bottom plate and used for fixing two ends of the rubber sheets above the rubber dam; the rubber sheet comprises a heating rubber sheet arranged in the middle and common rubber sheets connected to the left side and the right side of the heating rubber sheet; the water charging and discharging pipeline is embedded in the foundation slab and is communicated with the plurality of water charging and discharging ports on the bottom wall of the middle groove; when the rubber dam is inflated, the heating rubber sheet and the top of the rubber dam can be tightly attached together. The system is suitable for severe cold areas and has the functions of vibration prevention and scour prevention.

Description

Anti-scouring and anti-vibration bidirectional water-retaining rubber dam for severe cold area

Technical Field

The utility model relates to a bidirectional water retaining rubber dam hydraulic structure in a severe cold area, in particular to a combined structure of a rubber dam body and a heating type rubber sheet as an intercepting and water storage device in the severe cold area.

Background

At present, for the problem of vibration of a rubber dam, a rubber flow-deflecting water tongue is arranged at the top of a dam bag to change the flow state of overflow water flow and reduce the energy of the water flow and the probability of hydraulic jump generation. For the ice melting and freezing prevention problem of the rubber dam, measures such as arranging a row of spoilers with blade wheels on the surface of an upstream water retaining water area, a compressed air bubble blowing method, a pressure water jet method and the like are mainly adopted, so that nearby water is in a local flowing state, and the freezing point of local water is increased. The above anti-vibration method has the following disadvantages: firstly, when the overflow flow is large, the flow-picking water tongue loses the vibration reduction function; secondly, the flow tongues need to be in seamless lap joint, so that the manufacturing difficulty and cost of dam bags are increased; thirdly, the dam bag is not stressed uniformly, if the water tongue is broken, the water tongue cannot be maintained effectively, and the using effect and the service life are difficult to guarantee. The above anti-freezing damage method has the following disadvantages: firstly, the equipment cost is high, and the operation energy consumption is large; secondly, the function is single, and the function of vibration prevention and loss reduction is not realized when the dam is collapsed and the flow is discharged; and thirdly, the installation is time-consuming and labor-consuming, and the manual dismantling is needed after the cold season, so that the economic investment is increased.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides an anti-freezing, anti-scouring and anti-vibration bidirectional water-retaining rubber dam for severe cold areas.

The utility model relates to an anti-scouring and anti-vibration bidirectional water-retaining rubber dam for severe cold areas, which comprises a concave foundation bottom plate poured at a riverbed, wherein a rubber dam bag is arranged in a middle groove of the foundation bottom plate in a through-length manner, the left side and the right side of the rubber dam bag are fixed in the groove of the foundation bottom plate through a double-anchoring line system, and the front end and the rear end of the rubber dam bag are sealed and waterproof by adopting a plug type structure;

a plurality of side grooves are respectively arranged on the top walls of the left and right convex edges of the foundation slab at intervals in the front and back direction, an n-shaped buckle is fixed on the inner wall of one side of each side groove close to the rubber dam bag, and a rotating stainless steel groove cover is connected to each side groove;

the left side wall and the right side wall of the n-shaped buckle are respectively embedded with at least two groups of stainless steel press-in type spring positioning beads, a stainless steel rod is connected in the front n-shaped buckle and the rear n-shaped buckle of each side groove, and the stainless steel rods are clamped in clamping grooves of the front n-shaped buckle and the rear n-shaped buckle through the stainless steel press-in type spring positioning beads; a rubber sheet is connected between two stainless steel rods in each group of side grooves which are arranged oppositely at the left and right sides, the rubber sheet is positioned above the rubber dam bag, and the left and right ends of each rubber sheet are fixedly connected with the two stainless steel rods which are arranged oppositely at the left and right sides;

each rubber sheet comprises a heating type rubber sheet arranged in the middle and common rubber sheets connected to the left side and the right side of the heating type rubber sheet, each rubber sheet is of an integral structure, the heating type rubber sheet comprises a first outer waterproof rubber layer, a first canvas, a first inner rubber layer, a heating wire, a second inner rubber layer, a second canvas and a first inner waterproof rubber layer which are sequentially arranged from outside to inside, the heating wire is connected with a power line, and the common rubber sheets comprise a second outer waterproof rubber layer, a third canvas, a third inner rubber layer, a fourth canvas and a second inner waterproof rubber layer which are sequentially arranged from outside to inside; the bottom wall of the middle groove is provided with a plurality of charging and discharging ports, the charging and discharging pipeline is embedded in the foundation slab and is communicated with the charging and discharging ports, and when the rubber dam is inflated, the heating rubber sheet can be tightly attached to the top of the rubber dam.

The utility model has the beneficial effects that:

1. the construction cost is low, the structure of each part is simple, the manufacture is convenient, the construction is convenient and fast, the construction period is short, and the device can be repeatedly used.

2. The method is simple to operate, can be adjusted to different heat productivity according to the thickness of the ice layer to quickly complete melting and freezing when facing a severe cold freezing period, is good in timeliness, saves energy, protects environment, and does not need secondary dismantling and a large amount of investment of personnel and machinery.

3. The rubber sheet fixed during the overflow of the dam crest can be used as a turbulence device to change the flow state of water flow, reduce the water flow pulsating pressure and scouring force and prevent the dam bag from being damaged by vibration and the downstream foundation bed from being damaged by scouring.

4. Each rubber sheet can be independently overhauled and installed, the replacement is rapid and convenient, and the rubber sheets are not influenced by each other. The damaged heating rubber sheets can be repeatedly used for reducing vibration and reducing damage of dam top overflow in a non-freezing period, and the functions of intercepting and storing water and disturbing flow and reducing vibration of the rubber dam in a severe cold season are effectively exerted.

Drawings

FIG. 1 is a schematic structural view of a vibration-proof and erosion-proof bidirectional water-retaining rubber dam composite structure for severe cold areas, which is arranged on a foundation slab and is installed completely;

FIG. 2 is a detailed view of the heated rubber sheet and a conventional rubber sheet of the apparatus shown in FIG. 1;

FIG. 3 is a view showing the structure of a side groove for fixing a rubber sheet of the apparatus shown in FIG. 1;

FIG. 4-1 is a detailed view of an n-shaped automatic buckle for fixing a stainless steel rod of the device shown in FIG. 3;

FIG. 4-2 is a schematic cross-sectional view of the automatic buckle of the device shown in FIG. 1;

fig. 5 is a schematic view of the overall structure of the device of the present invention at the stage of use.

Detailed Description

In order that those skilled in the art may better understand the present invention, the following detailed description of the utility model is provided in conjunction with the accompanying drawings.

As shown in the attached drawings, the heating type scour prevention and vibration prevention bidirectional water retaining rubber dam device for the severe cold area comprises a concave foundation slab 2 poured at a riverbed, a rubber dam bag 4 is installed in a middle groove of the foundation slab 2 in a through manner, the left side and the right side of the rubber dam bag 4 are fixed in the groove of the foundation slab 2 through a conventional double-anchoring line system 3, and the front end and the rear end of the rubber dam bag 4 are sealed and waterproof through a conventional plug structure.

As an implementation mode of the utility model, a screw hole 8-3 is formed in the side wall of the n-shaped buckle 8 close to one side of the rubber dam bag, and the n-shaped buckle 8 is fixedly connected with the foundation slab 2 through a bolt 8-2 penetrating through the screw hole 8-3. Each side groove is connected with a rotating stainless steel groove cover 1-1, and the stainless steel groove covers 1-1 are used for preventing silt from entering the side grooves 1.

At least two groups of stainless steel press-in type spring positioning beads 8-1 are embedded in the left side wall and the right side wall of each n-shaped buckle 8 relatively, a stainless steel rod 9 is connected between the front n-shaped buckle 8 and the rear n-shaped buckle 8 of each side groove, the front end and the rear end of each stainless steel rod 9 are inserted into the clamping grooves of the front n-shaped buckle 8 and the rear n-shaped buckle 8 respectively and are fixed through the stainless steel press-in type spring positioning beads 8-1. Be connected with a sheet rubber between two stainless steel rods 9 in the avris recess of relative setting about each group, the sheet rubber be located rubber dam bag 4 top, both ends are fixed continuous with two stainless steel rods 9 of relative setting about with respectively about every sheet rubber about.

Each rubber sheet comprises a heating type rubber sheet 6 arranged in the middle and common type rubber sheets 7 connected to the left side and the right side of the heating type rubber sheet 6, each rubber sheet is of an integral structure, and the heating type rubber sheet 6 and the common type rubber sheets 7 are vulcanized and molded at one time without lap seams. The heating type rubber sheet 6 comprises a first outer waterproof rubber layer 6-7, a first canvas 6-6, a first inner rubber layer 6-5, a heating wire 6-4, a second inner rubber layer 6-3, a second canvas 6-2 and a first inner waterproof rubber layer 6-1 which are sequentially arranged from outside to inside, the heating wire is connected with a power line 6-8, and the common rubber sheet 7 comprises a second outer waterproof rubber layer 7-5, a third canvas 7-4, a third inner rubber layer 7-3, a fourth canvas 7-2 and a second inner waterproof rubber layer 7-1 which are sequentially arranged from outside to inside.

Preferably, the top wall of each side groove close to one side of the rubber dam bag is an arc-shaped groove wall 1-5, and a stainless steel groove cover 1-1 opposite to the arc-shaped groove wall 1-5 is connected with a rubber film 1-2. The rubber sheet 1-2 is used for avoiding friction and cutting between the rubber sheet and the stainless steel groove cover 1-1 when the rubber sheet freely swings; the arc-shaped groove wall 1-5 is used for preventing the rubber sheet and the groove wall outlet from being worn and damaged, the stainless steel groove cover 1-1 rotates along the motion track 1-3, and the rubber sheet 1-2 rotates along the motion track 1-4.

The bottom wall of the middle groove is provided with a plurality of water filling and discharging ports 5, dam bag water filling is carried out through the water filling and discharging ports 5 through a water pump via a water filling and discharging pipeline during filling, the water filling and discharging pipeline is embedded in the foundation bottom plate and is communicated with the water filling and discharging ports 5, the structure is the existing structure, and water is drained outwards through the water filling and discharging ports 5 during draining; the schematic structural diagram of the rubber dam after the rubber sheet is fixed and the filling is completed is shown in fig. 5. When the rubber dam 4 is inflated, the heating type rubber sheet 6 is tightly attached to the top of the rubber dam 4, the water area surface and the filling water in the rubber dam 4 can be heated, the dam bag can be prevented from being damaged by freezing, the rubber sheets arranged at equal intervals after the rubber dam 4 is inflated are in an extending state, when the top of the dam overflows, one part of water flow of the water flow passing through the rubber sheet flows to the downstream of the dam, the other part of water flow passes through the dam surface of the dam bag 4 between the rubber sheets 6 and flows to the downstream of the dam, and the flow state of the water flow passing through the dam of the original rubber dam 4 is changed due to the existence of the rubber sheet 4, so that the water flow pulsation pressure, the scouring force and the noise are reduced.

The construction method of the system comprises the following steps:

1. firstly, according to the characteristics and the application requirements of the rubber dam, factors such as terrain, geology, water flow, silt, environment influence and the like are comprehensively considered, and the dam site is preferably selected from a river section which is relatively straight, has smooth water flow state and is stable on a bank slope. Then dredging and reinforcing the riverbed, pouring a reinforced concrete foundation slab 2, installing relevant filling and discharging pipelines, anchoring bolts and other civil engineering works.

2. And after the civil engineering is finished, checking whether each part works normally, whether dam bag materials are damaged or not, and whether the heating type rubber sheet works normally or not. Fixing a rubber dam 4 on a foundation slab 2 by adopting a bolt pressing plate system 3 with double anchoring lines, as shown in figure 1;

3. the rubber sheet comprising the heating rubber sheet 6 and the common rubber sheet 7 is wound and fixed with the stainless steel rod 9, the structures of the heating rubber sheet 6 and the common rubber sheet 7 are shown as figures 2-1 and 2-2, and then the buckle 8 is fixed in the side groove by adopting a nut 8-2, as shown in figure 3;

4. checking whether the stainless steel press-in type spring positioning ball 8-1 embedded in the buckle 8 works normally or not as shown in figures 4-1 and 4-2, and then putting the stainless steel rod 9 into the n-shaped buckle 8 and fixing.

5. The rubber dam bag 4 is inflated and the dam bag gradually forms a water-retaining dam having a certain height and cross-sectional shape as shown in fig. 5. At this time, the heating rubber sheet 6 and the normal rubber sheet 7 rise and form an inclined plane respectively at the upstream and downstream, and the heating rubber sheet 6 is closely attached to the dam crest as shown in fig. 5.

6. The heating type rubber sheet 6 temperature controller is adjusted to different powers according to the thickness of the frozen water surface, so that different heat is provided for unfreezing and deicing the ice body on the surface of the water area in the ice layer and in the rubber dam 4, and the rubber dam 4 is prevented from being damaged by freezing when running in a severe cold area.

7. If the dam crest overflows without freezing, the power supply of the heating rubber sheet 6 is turned off, so that the heating rubber sheet serves as a flow disturbing device for eliminating pulsating pressure of dam crest overflow and reducing kinetic energy of water flow, and the risks of dam bag vibration abrasion and downstream foundation bed scouring damage are obviously reduced.

Claims

1. The utility model provides a two-way manger plate rubber dam that is used for scour protection antivibration in severe cold district which characterized in that: the novel dam comprises a concave foundation slab (2) poured at a riverbed, wherein a rubber dam bag is installed in a middle groove of the foundation slab in a through-length mode, the left side and the right side of the rubber dam bag are fixed in the groove of the foundation slab through a double-anchoring line system (3), and the left end and the right end of the rubber dam bag are sealed and waterproof through a plug type structure;

a plurality of side grooves are respectively formed in the top walls of the left and right convex edges of the foundation slab at intervals in the front and back directions, n-shaped buckles are respectively fixed on the front and back sides of the inner wall of one side of each side groove, which is close to the rubber dam bag, and a stainless steel groove cover (1-1) is rotatably connected to each side groove;

at least two groups of stainless steel press-in type spring positioning beads are embedded in the left side wall and the right side wall of each n-shaped buckle in a left-right opposite mode respectively, a stainless steel rod is connected to each of the front n-shaped buckle and the rear n-shaped buckle of each side groove respectively, the front end and the rear end of each stainless steel rod are inserted into the clamping grooves of the front n-shaped buckle and the rear n-shaped buckle respectively and are clamped in the clamping grooves of the front n-shaped buckle and the rear n-shaped buckle through the stainless steel press-in type spring positioning beads; a rubber sheet is connected between two stainless steel rods in each group of side grooves which are oppositely arranged left and right, the rubber sheet is positioned above the rubber dam bag (4), and the left end and the right end of each rubber sheet are fixedly connected with the two stainless steel rods which are oppositely arranged left and right respectively;

each rubber sheet comprises a heating rubber sheet (6) arranged in the middle and common rubber sheets (7) connected with the left side and the right side of the heating rubber sheet, each rubber sheet is of an integral structure, the heating rubber sheet comprises a first outer waterproof rubber layer (6-7), a first canvas (6-6), a first inner rubber layer (6-5), heating wires (6-4), a second inner rubber layer (6-3), a second canvas (6-2) and a first inner waterproof rubber layer (6-1) which are arranged from outside to inside in sequence, the heating wires are connected with power lines (6-8), and the common rubber sheet comprises second outer waterproof rubber (7-5), third canvas (7-4), third inner rubber (7-3), fourth canvas (7-2) and second inner waterproof rubber (7-1) which are sequentially arranged from outside to inside; the bottom wall of the middle groove is provided with a plurality of charging and discharging ports (5), a charging and discharging pipeline is embedded in the foundation slab and is communicated with the charging and discharging ports, and when the rubber dam is inflated, the heating type rubber sheet (6) and the dam crest of the rubber dam can be tightly attached together.

2. The anti-scouring anti-vibration bidirectional water-retaining rubber dam for severe cold areas as claimed in claim 1, wherein: the side wall of the n-shaped buckle close to one side of the rubber dam bag is provided with a screw hole, and the n-shaped buckle is fixedly connected with the foundation slab through a bolt penetrating through the screw hole.

3. The anti-scouring and anti-vibration bidirectional water-retaining rubber dam for severe cold areas according to claim 1 or 2, characterized in that: the heating type rubber sheet and the common rubber sheet are formed in a one-step vulcanization mode without lap seams.

4. The anti-scouring anti-vibration bidirectional water-retaining rubber dam for severe cold areas as claimed in claim 3, wherein: the top wall of each side groove close to one side of the rubber dam bag is an arc-shaped groove wall, and a stainless steel groove cover opposite to the arc-shaped groove wall is connected with a rubber film.