Hydraulic structure for temporary river breaking

Abstract

The utility model provides a hydraulic structure for temporary river breaking, which belongs to the technical field of undercrossing river construction, and comprises an upstream cofferdam, a downstream cofferdam and a water passing plate, the upstream cofferdam and the downstream cofferdam respectively comprise two parts and are trapezoidal, the outer side wall surfaces of the cofferdams have inclined angles, and the water passing plate is provided with three water passing holes and a filter screen. All the components of the structure are connected in a tenon-and-mortise-like splicing mode through the protruding blocks and the grooves. During working, the upstream cofferdam and the downstream cofferdam are arranged on two sides of the tunnel structure to break rivers, water flows through the water holes to relieve upstream pressure, the filter screens intercept sundries, and the structure is convenient to construct and high in stability and can give consideration to construction safety and environmental protection.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the construction technology field of underpassing river, specifically relates to a water conservancy structure of temporary broken river. BACKGROUND

[0002] The construction of track traffic engineering underpassing river has great risk, especially for the track traffic engineering with shallow buried depth or upper soil fissure development, and the river water is prone to flow into the tunnel during the construction process, the current method is to carry out advanced geological prediction and tunnel hole grouting reinforcement, but the effect is not ideal, and the risk of river water flowing into the tunnel is still great.

[0003] The utility model patent with patent application publication number CN221878138U discloses a water conservancy structure of temporary broken river, including upstream earth cofferdam and downstream earth cofferdam, the upstream earth cofferdam and downstream earth cofferdam are provided with water pipe between them, the buffer support frame is arranged on the left and right sides of the surface of the water pipe, and the vibration and shaking generated during the operation of the water pipe are buffered.

[0004] However, from the perspective of construction difficulty, the construction of the earth and rock cofferdam requires a large amount of earthwork excavation, transportation and filling work, which not only consumes a lot of manpower, material resources and time, but also has high requirements for the space of the construction site and the surrounding environmental conditions; in terms of structural stability, the traditional structures such as earth and rock cofferdam are prone to soil loss on the cofferdam slope surface under the impact of strong water flow and high water level, which may weaken the overall stability of the cofferdam and even cause serious safety accidents such as dam breakage, therefore, the utility model provides a water conservancy structure of temporary broken river to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model provides a water conservancy structure of temporary broken river in view of the problems in the prior art.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] A water conservancy structure of temporary broken river, comprising an upstream cofferdam, a downstream cofferdam and a water passing plate, the upstream cofferdam comprises a first upstream cofferdam and a second upstream cofferdam, the downstream cofferdam comprises a first downstream cofferdam and a second downstream cofferdam, the water passing plate is arranged between the upstream cofferdam and the downstream cofferdam, and the upstream cofferdam, the downstream cofferdam and the water passing plate are connected in a splicing manner.

[0008] Preferably, the water passing plate is provided with protrusions at both ends of the bottom, the first upstream cofferdam is provided with a groove on the upper surface, the groove is matched with the protrusions at one end of the bottom of the water passing plate, and the first downstream cofferdam is also provided with a groove on the upper surface, and the groove is matched with the protrusions at the other end of the bottom of the water passing plate.

[0009] As preferred, the upstream first cofferdam is provided with protrusions on the bottom surface, the upstream second cofferdam is provided with recesses on the upper surface, the protrusions on the bottom surface of the upstream first cofferdam are matched with the recesses on the upper surface of the upstream second cofferdam, and the protrusions on the bottom surface of the downstream first cofferdam are matched with the recesses on the upper surface of the downstream second cofferdam, and the protrusions and the recesses form a connection mode similar to a mortise and tenon structure.

[0010] As preferred, the water passing plate is provided with water passing holes, the water passing holes include three and are located at the middle and both sides of the water passing plate, can effectively disperse water flow and reduce local scouring risk, and the water passing holes are provided with filter screens, when the upstream water level is too high, water flow can flow from the upstream to the downstream through the water passing holes in the top water passing plate, and the filter screens intercept sundries.

[0011] As preferred, the outer side walls of the upstream cofferdam and the downstream cofferdam are provided with inclined angles, can disperse the pressure of water flow and enhance the stability of the structure, and the upstream cofferdam and the downstream cofferdam are in a trapezoidal structure, the bottom width is larger, can provide more stable support and reduce the risk of the structure being washed away or overturned by water flow.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that:

[0013] 1. The cofferdams and the water passing plate and the cofferdams are connected through protrusions and recesses to form a connection structure similar to a mortise and tenon structure, the relative displacement of the components is limited in the vertical direction, the impact force of water flow can be effectively resisted in the horizontal direction, the whole hydraulic structure can keep stable under the impact of water flow, compared with the traditional earth-rock cofferdam construction mode, the construction period is greatly shortened, the input of manpower and material resources is reduced, the components of the structure can be prefabricated in the factory and directly spliced on site, the construction efficiency is greatly improved, and the demand for flow interruption in the construction area can be quickly met.

[0014] 2. The water passing plate is provided with three water passing holes located at the middle and both sides, can effectively disperse water flow, avoid local scouring, allow part of water flow to pass, prevent the upstream water level from being excessively high, reduce the pressure of the upstream cofferdam, maintain the hydraulic balance of the whole structure, and ensure construction safety. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without paying creative labor.

[0016] Figure 1The utility model discloses a structure diagram of hydraulic structure of temporary broken river Figure 1 ;

[0017] Figure 2 The utility model discloses a structure diagram of hydraulic structure of temporary broken river Figure 2 ;

[0018] Figure 3 For Figure 1 A front view of the hydraulic structure of temporary broken river;

[0019] In the above figures, 1, the first cofferdam of upstream; 2, the second cofferdam of upstream; 3, the first cofferdam of downstream; 4, the second cofferdam of downstream; 5, the water passing plate; 6, the water passing hole; 7, the filter screen. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model is further explained below with the help of drawings and examples. It should be explained that the example and the features in the example of the application can be combined mutually in the case of no conflict.

[0021] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description, therefore, the utility model is not limited to the specific example of the following disclosure.

[0022] Example 1, as Figures 1 to 3As shown, the application is a water conservancy structure for temporarily cutting off a river, which comprises an upstream cofferdam, a downstream cofferdam and a water passing plate 5, the upstream cofferdam comprises a first upstream cofferdam 1 and a second upstream cofferdam 2, the downstream cofferdam comprises a first downstream cofferdam 3 and a second downstream cofferdam 4, the water passing plate 5 is arranged between the upstream cofferdam and the downstream cofferdam, the water passing plate 5 is provided with water passing holes 6, during the period of temporarily cutting off the river, part of the water flow can pass through the water passing holes 6 from upstream to downstream, avoiding excessive rise of the water level in the upstream due to cutting off the river, thereby reducing the pressure borne by the upstream cofferdam, the water passing holes 6 comprise three, which are respectively located in the middle and both sides of the water passing plate, effectively dispersing the water flow and reducing the risk of local erosion, the water passing holes 6 are provided with filter screens 7, the water passing plate 5 is provided with protrusions at the bottom of both ends, the first upstream cofferdam 1 is provided with a groove on the upper surface, the groove is matched with the protrusion at one end of the bottom of the water passing plate 5, the first downstream cofferdam 3 is also provided with a groove on the upper surface, the groove is matched with the protrusion at the other end of the bottom of the water passing plate 5, to ensure that the water passing plate 5 is stably embedded and prevent displacement caused by water flow erosion, the first upstream cofferdam 1 and the first downstream cofferdam 3 are provided with protrusions on the bottom surface, the second upstream cofferdam 2 and the second downstream cofferdam 4 are provided with grooves on the upper surface, the protrusion on the bottom surface of the first upstream cofferdam 1 is matched with the groove on the upper surface of the second upstream cofferdam 2, the protrusion on the bottom surface of the first downstream cofferdam 3 is matched with the groove on the upper surface of the second downstream cofferdam 4, the protrusion and the groove are matched in a connection mode similar to a mortise and tenon structure, which not only can limit the relative displacement between the cofferdams in the vertical direction, but also can resist the water flow impact force in the horizontal direction to some extent.

[0023] The outer side walls of the upstream cofferdam and the downstream cofferdam are provided with an inclined angle, the inclined structure can disperse the pressure of the water flow, enhance the stability of the structure, reduce the direct erosion of the water flow to the cofferdam, prolong the service life of the cofferdam, the upstream cofferdam and the downstream cofferdam are in a trapezoidal structure, the bottom width is larger, when subjected to the impact force of the water flow, the bottom can provide more stable support, reducing the risk of the structure being washed away or overturned by the water flow, the upstream cofferdam, the downstream cofferdam and the water passing plate 5 are connected in a splicing mode, which is convenient for quick installation and disassembly, and can adapt to the construction requirements of different river sections.

[0024] Working principle: the upstream cofferdam and downstream cofferdam are arranged on the two sides of the tunnel structure, the river is blocked, the upstream cofferdam and the downstream cofferdam are combined through the convex and the groove, the convex blocks on the bottom surfaces of the upstream first cofferdam 1 and the downstream first cofferdam 3 are connected with the recesses on the upper surfaces of the upstream second cofferdam 2 and the downstream second cofferdam 4, the convex block on the bottom end of the water passing plate 5 is embedded into the recess on the upper surface of the upstream first cofferdam 1 and the downstream first cofferdam 3, a stable overall structure is formed, when the upstream water level is too high, the water flow can flow from the upstream to the downstream through the water passing hole 6 in the top water passing plate 5, the upstream pressure is effectively relieved, meanwhile, the filter screen 7 intercepts sundries, the downstream water quality is guaranteed, the double targets of construction safety and environmental protection are ensured.

[0025] The above is only a preferred embodiment of the present application, and does not limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields. However, any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still falls within the protection scope of the present application.

Claims

1. A hydraulic structure for temporary river closure, characterized in that, It includes an upstream cofferdam, a downstream cofferdam, and a water-passing plate (5); the upstream cofferdam includes an upstream first cofferdam (1) and an upstream second cofferdam (2), the downstream cofferdam includes a downstream first cofferdam (3) and a downstream second cofferdam (4), and a water-passing plate (5) is provided between the upstream cofferdam and the downstream cofferdam. The upstream cofferdam, the downstream cofferdam and the water-passing plate (5) are connected by splicing.

2. The hydraulic structure for temporary river closure according to claim 1, characterized in that, The bottom of both ends of the water-passing plate (5) is provided with protrusions, the upper surface of the upstream first cofferdam (1) is provided with a groove, the groove is matched with the bottom protrusion of one end of the water-passing plate (5), the upper surface of the downstream first cofferdam (3) is also provided with a groove, the groove is matched with the bottom protrusion of the other end of the water-passing plate (5).

3. The hydraulic structure for temporary river closure according to claim 1, characterized in that, The bottom surfaces of the upstream first cofferdam (1) and the downstream first cofferdam (3) are provided with protrusions, and the upper surfaces of the upstream second cofferdam (2) and the downstream second cofferdam (4) are provided with grooves. The protrusions on the bottom surface of the upstream first cofferdam (1) cooperate with the grooves on the upper surface of the upstream second cofferdam (2), and the protrusions on the bottom surface of the downstream first cofferdam (3) cooperate with the grooves on the upper surface of the downstream second cofferdam (4).

4. A temporary river-blocking hydraulic structure according to claim 1, characterized in that, The water-passing plate (5) has water-passing holes (6), and there are three water-passing holes (6), which are located in the middle and on both sides of the water-passing plate (5), and a filter screen (7) is provided in the water-passing hole (6).

5. A temporary river-blocking hydraulic structure according to claim 1, characterized in that, The outer walls of the upstream and downstream cofferdams are inclined at an angle, and the upstream and downstream cofferdams have a trapezoidal structure.

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