A hydraulic tunnel structure for mountain water flow energy dissipation

Abstract

The application discloses a hydraulic tunnel structure for mountain water flow energy dissipation in the technical field of hydraulic tunnels, which comprises an inflow pipeline, an energy dissipation tunnel and an outflow pipeline, a plurality of spiral blades are arranged in the energy dissipation tunnel, and an energy storage assembly is arranged on the inner wall of the energy dissipation tunnel; the energy storage assembly comprises an energy storage pipeline, one side of the energy storage pipeline is provided with an inflow port, the inflow port faces the inflow pipeline side, a squeeze plate and a push plate are arranged in the energy storage pipeline, a closed cavity is formed between the squeeze plate and the push plate, two rubber balls are symmetrically arranged on the side of the squeeze plate and the push plate which are close to each other, the spacing between the first rubber ball and the inner top wall of the energy storage pipeline is h, the spacing between the second rubber ball and the inner bottom wall of the energy storage pipeline is H, the spacing between the two rubber balls is x, and the diameter of the rubber ball is r, wherein r is greater than h, H and x. The application has the advantages of simple structure, energy storage and enhanced energy dissipation effect in different flood seasons through the design of the energy storage assembly.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydraulic tunnels, and particularly relates to a hydraulic tunnel structure for mountain water flow energy dissipation. BACKGROUND

[0002] In water conservancy projects, mountain hydraulic tunnels are often used for water release. Because the potential energy difference between the upstream and downstream of the mountain is large, the flow velocity of the water released in the tunnel is very large, which inevitably causes scouring damage to the downstream riverbed. In engineering, necessary measures are usually taken to eliminate part of the energy of the released water flow and reduce the damage. In the past, the measures were to take engineering measures at the water outflow position, including four engineering measures of energy dissipation pool, drop, energy dissipation bucket and flip bucket combined with scouring pit. The above settings have relatively large engineering quantity and engineering cost, and also have potential safety hazards to the safety and stability of the mountain. At the same time, the above methods only use a one-time energy dissipation method, and the energy dissipation effect is not good. Therefore, it is necessary to propose a hydraulic tunnel structure for mountain water flow energy dissipation to strengthen the energy dissipation effect and store energy to reduce the engineering investment. SUMMARY

[0003] In order to solve the problem that the one-time energy dissipation method has poor energy dissipation effect, the purpose of the present application is a hydraulic tunnel structure for mountain water flow energy dissipation, which stores energy and strengthens the energy dissipation effect in different flood seasons through the design of the energy storage assembly.

[0004] In order to achieve the above purpose, the technical scheme of the present application is as follows: a hydraulic tunnel structure for mountain water flow energy dissipation, comprising an inflow pipe, an energy dissipation tunnel and an outflow pipe, the inflow pipe and the outflow pipe being respectively connected to the upper end and the lower end of the energy dissipation tunnel, a plurality of spiral blades being arranged in the energy dissipation tunnel, and an energy storage assembly being arranged on the inner wall of the energy dissipation tunnel.

[0005] The energy storage assembly comprises an energy storage pipe, an inflow port is arranged on one side of the energy storage pipe, the inflow port faces the inflow pipe, a squeezing plate and a push plate are arranged in the energy storage pipe, a closed cavity is formed between the squeezing plate and the push plate, two rubber balls are symmetrically arranged on the side of the squeezing plate and the push plate which are close to each other, the distance between the first rubber ball and the top wall of the energy storage pipe is h, the distance between the second rubber ball and the bottom wall of the energy storage pipe is H, the distance between the two rubber balls is x, and the diameter of the rubber ball is r, wherein r is greater than h, H and x.

[0006] The rubber balls on the squeezing plate and the push plate can contact and squeeze each other.

[0007] The basic principle of the scheme is as follows: water first flows to the inlet pipe, then along the inlet pipe to the energy dissipation tunnel. After the energy dissipation tunnel dissipates a large amount of energy from the water flow, it flows to the outlet pipe. When the water reaches the energy dissipation tunnel, it first comes into contact with the spiral blades inside the energy storage pipe, where it mainly swirls and falls to the next step in a wall-hugging manner. Energy dissipation is mainly achieved during the stepped spiral waterfall process, and its mechanism is to use the stepped waterfall for energy dissipation.

[0008] When the water flows into the energy dissipation tunnel, it also flows into the energy storage pipe. The water will first come into contact with the squeezing plate. As more water accumulates at the squeezing plate, the pressure at the squeezing plate will gradually increase. When the pressure reaches a certain level, the squeezing plate will be pushed by the potential energy of the water flow. Since the pressure inside the cavity is constant, the pusher plate will be pushed by the pressure inside the cavity as the squeezing plate moves. In the event of heavy rain, the pusher plate will be pushed to the inner wall of the end of the energy storage pipe. At this time, since the pusher plate has reached the end of the energy storage pipe, the potential energy of the external water flow is still increasing, so the squeezing plate will continue to move. At this time, the volume inside the cavity will gradually decrease, but the pressure will increase until the rubber balls come into contact with each other.

[0009] Because the diameter r of the rubber balls is greater than h, H, and x, the four rubber balls will squeeze and adhere to each other. As the four rubber balls squeeze each other, the volume inside the rubber balls will gradually decrease, but the number of gas molecules in the cavity will not change. Therefore, the pressure inside the rubber balls will increase. When the rubber balls approach each other, they will deform and form a pocket shape, which will guide some of the squeezed-out gas back into the rubber balls. This will create a corresponding high-pressure zone inside the rubber balls, allowing the rubber balls to squeeze and contact each other and achieve a certain amount of energy storage. At the same time, a certain amount of water will accumulate in the energy storage pipe. When the external rainfall decreases, the pressure on the squeezing plate will decrease. At this time, because the thrust on the rubber balls decreases, the kinetic energy stored in them will generate a correspondingly larger reaction kinetic energy under the action of reduced pressure, thus exerting a larger thrust on the squeezing plate. The squeezing plate moves towards the inlet and pushes the water in the energy storage pipe to flow into the energy dissipation tunnel.

[0010] The beneficial effects of the basic scheme are: 1. The spiral blade can guide the water flow to rotate, gradually capture the water flow energy and disperse the vortex in the flow field in the process of guiding, so as to more fully consume the water flow kinetic energy. Compared with the ordinary energy dissipation tunnel, the energy dissipation efficiency can be improved under the condition of the same length. At the same time, due to the existence of fluid resistance such as slip and friction in the energy dissipation tunnel, a certain degree of pressure loss will be caused. The use of spiral blades can reduce the local flow velocity in the pipeline and reduce the fluid resistance, thereby further reducing the pipeline pressure loss; the geometric shape of the spiral blade can be adjusted according to different working conditions and flow characteristics, and has strong adaptability.

[0011] 2. The design of the energy storage assembly can accumulate rainwater when the outside is in the flood season, and provide a certain amount of water supplement for the energy dissipation tunnel when the outside is not in the flood season and the energy dissipation tunnel is not sufficient due to the small amount of water in the inside, thereby keeping the energy dissipation tunnel stable and efficient.

[0012] Further, the extrusion plate and the push plate are fixedly connected with sliding blocks at the top and the bottom, and the inner top wall and the inner bottom wall of the energy storage pipeline are provided with sliding grooves, and the sliding blocks are located in the sliding grooves, and the extrusion plate and the push plate are slidably connected with the energy storage pipeline through the sliding blocks and the sliding grooves.

[0013] The beneficial effects of the basic scheme are: when the extrusion plate moves to the inlet under the action of the reaction force, the sliding groove and the sliding block can limit the position of the extrusion plate, thereby reducing the problem of the extrusion plate separating from the energy storage pipeline.

[0014] Further, the several spiral blades are provided with exhaust holes.

[0015] The beneficial effects of the basic scheme are: when the water flow flows in the energy dissipation tunnel, the exhaust holes can also be driven to exhaust correspondingly, and the exhaust effect is better. Although there is a cavity negative pressure area at the vertical ladder bottom corner, the minimum cavitation number is low, and the cavitation and cavitation risk is low.

[0016] Further, the central angles of the several spiral blades are 60°-70°.

[0017] The beneficial effects of the basic scheme are: the generation of vortex can be reduced, and the water flow velocity distribution between the connecting pipe and the spiral blade is also more uniform. In this way, the phenomenon of water hammer and the like in the pipeline can be effectively avoided, and the stability and reliability of operation are improved; and too large central angle is easy to cause the increase of flow resistance and the increase of pressure loss.

[0018] Further, the length of the inlet pipeline and the outlet pipeline is the same, and the length of the inlet pipeline and the outlet pipeline is less than the length of the energy storage pipeline.

[0019] The beneficial effect of the basic scheme is that the longer the energy dissipation tunnel is, the less the possibility of vortexes generated in the energy dissipation process is. Since the vortexes have a great influence on the energy dissipation effect, increasing the length of the energy dissipation tunnel can effectively reduce the influence, thereby improving the energy dissipation efficiency and stability of the pipeline; when the same flow is transmitted in a long pipeline, the fluid resistance and pressure loss generated are relatively small. The length of the energy dissipation tunnel is greater than the lengths of the inflow pipeline and the outflow pipeline, which can effectively reduce the pipeline pressure loss and reduce energy loss.

[0020] Further, the diameters of the inflow pipeline and the outflow pipeline are smaller than the diameter of the energy dissipation tunnel.

[0021] The beneficial effect of the basic scheme is that the smaller diameters of the inflow pipeline and the outflow pipeline can gradually slow down the high-speed water flow, thereby reducing the water head, water pressure and other problems caused by the kinetic energy of the water flow, and effectively controlling the flow rate of the water flow to a great extent; and since the flow rate of the inflow pipeline and the outflow pipeline is slow, the scouring and damage of the energy dissipation tunnel and the deposition of sundries such as silt in the pipeline can be effectively reduced. At the same time, the diameter of the energy dissipation tunnel is greater than the diameters of the inflow port and the outflow port, which can further avoid the influence of the sand and stone deposited in the pipeline on the performance of the pipeline.

[0022] Further, the spiral blades are each provided with a plurality of friction lines.

[0023] The beneficial effect of the basic scheme is that when the water flow passes through the energy dissipation pipeline, strong vortexes and adhesion phenomena are generated, which can cause problems such as pipeline jamming and noise. The friction lines can effectively reduce such jamming and improve the operation stability of the pipeline; at the same time, the energy dissipation pipeline is usually installed in an environment with turbulent water flow, and is easily scoured and worn by sundries such as silt and stones. The friction line design can increase the roughness of the surface of the pipeline, inhibit deposition and wear, and ensure the service life and performance stability of the pipeline.

[0024] Further, a reset spring is arranged between the extrusion plate and the push plate, one end of the reset spring is fixedly connected with the extrusion plate, and the other end of the reset spring is fixedly connected with the push plate.

[0025] The beneficial effect of the basic scheme is that the reset spring can also drive the position of the push plate to return, and then the closed cavity between the extrusion plate and the push plate is maintained again, thereby facilitating energy storage next time. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a forward schematic view of the hydraulic tunnel structure for mountain water flow energy dissipation in the embodiment of the present application.

[0027] Figure 2 It is a schematic view of the spiral blade in Figure 1

[0028] Figure 3 It is a schematic view of the spiral blade in​Figure 1 a positive view of the energy storage assembly in the figure.

[0029] Figure 4 for Figure 3 a movement schematic of the energy storage assembly in the figure.

[0030] Figure 5 for Figure 3 a movement schematic of the energy storage assembly in the figure. DETAILED DESCRIPTION

[0031] Further details are described below through specific embodiments:

[0032] The reference signs in the attached drawings of the specification include: inflow pipe 1, energy dissipation tunnel 2, inflow pipe 3, spiral blade 4, exhaust hole 5, energy storage assembly 6, energy storage pipe 601, chute 602, sliding block 603, push plate 604, extrusion plate 605, reset spring 606, rubber ball 607, cavity 608.

[0033] Example 1

[0034] Basically as shown in the attached Figures 1-5 A hydraulic tunnel structure for mountain water flow energy dissipation, including inflow pipe 1, energy dissipation tunnel 2 and outflow pipe, the inflow pipe 1 and the outflow pipe are communicated with the upper end and the lower end of the energy dissipation tunnel 2 respectively, a plurality of spiral blades 4 are arranged in the energy dissipation tunnel 2, and an energy storage assembly 6 is arranged on the inner wall of the energy dissipation tunnel 2.

[0035] The energy storage assembly 6 includes an energy storage pipe 601, the energy storage pipe 601 is provided with an inflow port on one side, the inflow port faces the side of the inflow pipe, the energy storage pipe 601 is provided with an extrusion plate 605 and a push plate 604, the extrusion plate 605 and the push plate 604 form a closed cavity 608, the extrusion plate 605 and the push plate 604 are symmetrically welded with two rubber balls 607 on the side close to each other, the distance between the first rubber ball 607 and the top wall of the energy storage pipe 601 is h, the distance between the second rubber ball 607 and the bottom wall of the energy storage pipe 601 is H, and the distance between the two rubber balls 607 is x, the diameter of the rubber ball 607 is r, wherein r is greater than h, H and x.

[0036] The rubber balls 607 on the extrusion plate 605 and the push plate 604 can contact and extrude each other.

[0037] The specific implementation process is as follows: when the water flow flows to the structure, the water flow first flows to the inflow pipe 1, and then flows along the inflow pipe 1 to the energy dissipation tunnel 2. After the energy dissipation of a large amount of water flow through the energy dissipation tunnel 2, the water flow flows out of the outflow pipe. When the water flow flows to the energy dissipation tunnel 2, the water flow first contacts the spiral blade 4 in the energy storage pipe 601, and the water flow mainly rotates in the form of wall adhering spiral flow and falls to the lower step. Energy dissipation is mainly realized in the process of step spiral drop. The mechanism is to use step drop to dissipate energy.

[0038] And the spiral blade 4 can guide the water flow to rotate, and gradually take the water flow energy and disperse the vortex in the flow field in the guiding process, so as to more fully consume the kinetic energy of the water flow. Compared with the ordinary energy dissipation tunnel 2, the use of spiral blade 4 can improve the energy dissipation efficiency under the condition of the same length. At the same time, due to the existence of slip, friction and other fluid resistance in the energy dissipation tunnel 2, a certain degree of pressure loss will be caused. The use of spiral blade 4 can reduce the local flow rate in the pipe and reduce the fluid resistance, thereby further reducing the pipe pressure loss. The geometric shape of the spiral blade 4 can be adjusted according to different working conditions and flow characteristics, and has strong adaptability.

[0039] When the water flow flows into the energy dissipation tunnel 2, the water flow also flows into the energy storage pipe 601. Thus, the water flow flows into the energy storage pipe 601 through the inflow port, and then first contacts the extrusion plate 605. Because the extrusion plate 605 and the push plate 604 form a closed cavity 608, the pressure in the cavity 608 remains constant. Thus, when the water flow accumulated at the extrusion plate 605 increases, the pressure at the extrusion plate 605 will gradually increase. When the pressure reaches a certain degree, the extrusion plate 605 will be pushed by the potential energy of the water flow. Because the pressure in the cavity 608 is constant, the push plate 604 will be pushed by the pressure in the cavity 608 to move with the movement of the extrusion plate 605. When this is a heavy rain, the push plate 604 will be pushed to the end wall of the energy storage pipe 601. At this time, because the push plate 604 has reached the end of the energy storage pipe 601, the energy storage pipe 601 can no longer move. However, at this time, the external water flow potential energy is still increasing, so the extrusion plate 605 will continue to move. At this time, the volume of the cavity 608 will gradually become smaller, but the pressure will become larger, until the rubber balls 607 contact each other.

[0040] Wherein because the diameter r of the rubber ball 607 is greater than h, H and x, the four rubber balls 607 will be pressed and fitted with each other, and at the same time, the volume in the rubber ball 607 will gradually become smaller when the four rubber balls 607 are pressed, but the number of gas molecules in the cavity 608 does not change, so the pressure inside the rubber ball 607 will become larger, and because the rubber ball 607 will deform correspondingly under the pressure, the side of the rubber ball 607 that is not subjected to pressure will extend outward until it contacts the inner top wall and the inner bottom wall of the energy storage pipeline 601, thereby forming a pocket during the deformation of the rubber ball 607, and then part of the squeezed out gas is guided into the rubber ball 607, thereby forming a corresponding high pressure area inside the rubber ball 607, so that the rubber ball 607 is squeezed and contacted and a certain amount of energy is stored, and a certain amount of water will also be stored in the energy storage pipeline 601;

[0041] When the external rainfall decreases, the pressure on the pressing plate 605 will decrease, and at this time, the rubber ball 607 will generate a relatively large counteracting kinetic energy under the action of the reduced pressure due to the previously accumulated kinetic energy, thereby exerting a relatively large thrust on the pressing plate 605, and the pressing plate 605 moves towards the inlet, and pushes the water flow in the energy storage pipeline 601 to flow to the energy dissipation tunnel 2, thereby making up for the insufficient energy dissipation of the energy dissipation tunnel 2 when the external rainfall is small, thereby providing a certain amount of energy storage water for the energy dissipation tunnel 2, and thereby ensuring the relatively efficient energy dissipation operation of the energy dissipation tunnel 2.

[0042] Thus, through the design of the energy storage assembly 6, rainwater can be stored when the outside is in the flood season, and when the outside is not in the flood season, and the energy dissipation tunnel 2 is not sufficient due to the small amount of internal water, a certain amount of water is provided for the energy dissipation tunnel 2, thereby maintaining the relatively stable and efficient energy dissipation effect of the energy dissipation tunnel 2.

[0043] Embodiment 2

[0044] The difference between the above embodiment and the present embodiment is that the pressing plate 605 and the push plate 604 are both welded with a sliding block 603, and the inner top wall and the inner bottom wall of the energy storage pipeline 601 are both provided with a sliding groove 602, the sliding block 603 is located in the sliding groove 602, and the pressing plate 605 and the push plate 604 are both slidably connected with the energy storage pipeline 601 through the sliding block 603 and the sliding groove 602.

[0045] The specific implementation process is as follows: when the extrusion plate 605 and the push plate 604 move in the energy storage pipeline 601, the sliding block 603 moves in the sliding groove 602, and when the extrusion plate 605 moves to the inlet under the action of the reaction force, the sliding groove 602 and the sliding block 603 can limit the position of the extrusion plate 605, thereby reducing the problem that the extrusion plate 605 is separated from the energy storage pipeline 601.

[0046] Embodiment 3

[0047] The difference from the above embodiments is that the exhaust holes 5 are arranged on the spiral blades 4.

[0048] The specific implementation process is as follows: when the water flows in the energy dissipation tunnel 2, the exhaust holes 5 can also drive the corresponding exhaust, and the exhaust effect is better. Although there is a cavity 608 negative pressure area at the vertical ladder bottom corner, the minimum cavitation number bottom, and the cavitation and cavitation erosion risk is low.

[0049] Embodiment 4

[0050] The difference from the above embodiments is that the central angles of the spiral blades 4 are 60°-70°.

[0051] The specific implementation process is as follows: by controlling the central angle to be 60°-70°, the generation of vortex can be reduced, and the water flow velocity distribution between the connecting pipe and the spiral blade 4 is also more uniform. In this way, the phenomenon of water hammer and the like in the pipeline can be effectively avoided, and the stability and reliability of operation are improved; and too large central angle is easy to cause the increase of flow resistance and the increase of pressure loss.

[0052] Embodiment 5

[0053] The difference from the above embodiments is that the length of the inlet pipeline 1 and the outlet pipeline is the same, and the length of the inlet pipeline 1 and the outlet pipeline is less than the length of the energy storage pipeline 601.

[0054] The specific implementation process is as follows: when the water flow enters the energy dissipation tunnel 2, after a period of sliding, friction and other effects, the corresponding kinetic energy is consumed to produce water head pressure drop. If the pipeline is too short, the water kinetic energy may not be fully consumed, reducing the energy dissipation effect. Therefore, under the premise of ensuring the energy dissipation effect, increasing the length of the energy dissipation tunnel 2 can prolong the energy dissipation time and improve the water flow energy dissipation efficiency; and the longer the length of the energy dissipation tunnel 2, the less likely it is to produce vortex flow during the energy dissipation process. Since vortex flow has a great influence on the energy dissipation effect, increasing the length of the energy dissipation tunnel 2 can effectively reduce its influence, thereby improving the energy dissipation efficiency and stability of the pipeline; the fluid resistance and pressure loss generated when the same flow is transmitted in a long pipeline are also relatively small. The length of the energy dissipation tunnel 2 is greater than the length of the inflow pipe 1 and the outflow pipe, which can effectively reduce the pipeline pressure loss and reduce energy loss.

[0055] Example 6

[0056] The difference from the above examples is that the diameters of the inflow pipe 1 and the outflow pipe are smaller than the diameter of the energy dissipation tunnel 2.

[0057] The specific implementation process is as follows: the smaller diameter of the inflow pipe 1 and the outflow pipe can gradually slow down the high-speed water flow, thereby reducing the water head, water pressure and other problems caused by water kinetic energy, and effectively controlling the flow rate of the water flow to a great extent; and because the flow rate of the inflow pipe 1 and the outflow pipe is slow, it can effectively reduce the scouring and damage of the energy dissipation tunnel 2 by the debris such as silt and other impurities and the deposition of the impurities in the pipeline. At the same time, the diameter of the energy dissipation tunnel 2 is larger than the inflow and outflow, which can further avoid the influence of the sand and stone deposited in the pipeline on the performance of the pipeline.

[0058] Example 7

[0059] The difference from the above examples is that the spiral blades 4 are each provided with a plurality of friction lines.

[0060] The specific implementation process is as follows: through the design of the friction lines, the surface area in contact with the water flow can be increased, and the friction between the water and the blades can be improved. This friction will convert the kinetic energy of the water flow into friction heat, thereby achieving better energy dissipation effect; when the water flow passes through the energy dissipation pipeline, strong vortex flow and adhesion phenomenon will occur, which will cause problems such as pipeline jamming and noise. The setting of the friction lines can effectively reduce this jamming phenomenon and improve the running stability of the pipeline; at the same time, the energy dissipation pipeline is usually installed in an environment with relatively turbulent water flow, which is easy to be scoured and worn by debris such as silt and stones. The friction line design can increase the roughness of the pipeline surface, inhibit deposition and wear, and ensure the service life and performance stability of the pipeline.

[0061] Example 8

[0062] Different from the above-mentioned embodiments, the reset spring 606 is arranged between the extrusion plate 605 and the push plate 604, one end of the reset spring 606 is fixedly connected with the extrusion plate 605, and the other end of the reset spring 606 is fixedly connected with the push plate 604.

[0063] The specific implementation process is as follows: when the extrusion plate 605 moves to the inlet under the reaction force, the reset spring 606 can also drive the position of the push plate 604 to reset, so that the extrusion plate 605 and the push plate 604 can maintain the closed cavity 608 again, thereby facilitating energy storage next time.

[0064] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0065] The above-mentioned is only an embodiment of the present application, and the common knowledge of specific structures and characteristics in the scheme is not described in detail, the ordinary skilled person in the art knows all the ordinary technical knowledge in the field of the application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply the conventional experimental means before the date, the ordinary skilled person in the art can improve and implement the scheme under the inspiration given by the present application combined with their own ability, some typical known structures or known methods should not be an obstacle for the ordinary skilled person in the art to implement the present application. It should be pointed out that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be regarded as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A hydraulic tunnel structure for energy dissipation in mountain water flow, characterized in that: It includes an inflow pipe, an energy dissipation tunnel, and an outflow pipe. The inflow pipe and the outflow pipe are respectively connected to the upper and lower ends of the energy dissipation tunnel. The energy dissipation tunnel is equipped with several spiral blades, and the inner wall of the energy dissipation tunnel is equipped with energy storage components. The energy storage assembly includes an energy storage pipe with an inlet on one side facing the inlet. Inside the energy storage pipe are a squeezing plate and a pusher plate, forming a sealed cavity. Two rubber balls are symmetrically arranged on each side of the squeezing plate and the pusher plate, close to each other. The distance between the first rubber ball and the top wall of the energy storage pipe is h, the distance between the second rubber ball and the bottom wall of the energy storage pipe is H, the distance between the two rubber balls is x, and the diameter of the rubber balls is r, where r is greater than h, H, and x. The rubber balls on the extrusion plate and push plate can come into contact with each other and be squeezed.

2. The hydraulic tunnel structure for energy dissipation in mountain water flow as described in claim 1, characterized in that: The top and bottom of the extrusion plate and the push plate are fixedly connected to sliders. The top and bottom walls of the energy storage pipe are provided with grooves, the sliders are located in the grooves, and the extrusion plate and the push plate are slidably connected to the energy storage pipe through the sliders and grooves.

3. The hydraulic tunnel structure for energy dissipation in mountain water flow as described in claim 2, characterized in that: Exhaust holes are provided at several of the spiral blades.

4. The hydraulic tunnel structure for energy dissipation of mountain water flow as described in claim 3, characterized in that: The central angle of several helical blades is 60°-70°.

5. The hydraulic tunnel structure for energy dissipation of mountain water flow as described in claim 4, characterized in that: The inflow and outflow pipes are of the same length, and both the length of the inflow and outflow pipes is less than the length of the energy dissipation tunnel.

6. The hydraulic tunnel structure for energy dissipation of mountain water flow as described in claim 5, characterized in that: The diameters of both the inflow and outflow pipes are smaller than the diameter of the energy dissipation tunnel.

7. The hydraulic tunnel structure for energy dissipation of mountain water flow as described in claim 6, characterized in that: The spiral blades are all provided with several friction marks.

8. The hydraulic tunnel structure for energy dissipation of mountain water flow as described in claim 7, characterized in that: A return spring is provided between the extrusion plate and the push plate. One end of the return spring is fixedly connected to the extrusion plate, and the other end of the return spring is fixedly connected to the push plate.

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