Riverway impact-resistant dam protection structure and construction method

Abstract

The invention discloses a riverway anti-impact dam protection structure and a construction method, the riverway anti-impact dam protection structure comprises a dam protection main body and a dam protection energy dissipation body, the dam protection main body comprises anchoring parts and a ramp protection plate, and the ramp protection plate is installed on a slope through the anchoring parts; the dam protection energy dissipation body is installed between the ramp protection plates, the surface of the dam protection energy dissipation body is provided with an energy dissipation part exposed out of the outer sides of the ramp protection plates, the energy dissipation part is used for absorbing water flow impact to generate elastic deformation, a cavity is formed in the dam protection energy dissipation body, an extrusion plate is slidably matched in the cavity, and an air bag body is installed between the extrusion plate and the inner wall of the cavity. The interior of the air bag body communicates with the interior of the energy dissipation part. The construction efficiency and the control quality can be greatly improved by adopting an assembly type structure, construction and later river channel maintenance operation are facilitated, the ramp protection plate is fixedly installed on the slope surface through the anchoring parts, the energy dissipation part of the dam protection energy dissipation body absorbs water flow impact, the air bag body acts on the extrusion plate through elastic deformation, and the slope protection plate is fixed. Therefore, the back-flushing energy dissipation piece in the ramp protection plate can perform reverse energy dissipation on the high-pressure flushing water flow.

Description

Technical Field

[0001] The invention belongs to the technical field of river channel construction, and specifically relates to a river channel anti-impact dam protection structure and a construction method. Background Art

[0002] Slope protection refers to the river section where the bridge is located. The concave bank of the river bank is subjected to erosion by water flow year by year, which will cause the river bank to collapse continuously. In order to protect the safety of bridges and embankments, protective buildings must be built on the concave bank. This type of building is usually called revetment. There are two forms of revetment: direct protection and indirect protection. Direct protection is to directly reinforce the river bank slope to resist erosion and washing away by water flow.

[0003] The existing river channel slope protection structure is a recoil structure, such as CN202410190708.1, which uses the water flow at the bottom to be discharged from the top to reduce the impact kinetic energy of the water flow. Although the setting of the filter component can achieve the filtering effect, it reduces the internal water kinetic energy. Therefore, this type of structure uses the slow-type water flow of the recoil to reduce the impact kinetic energy of the water flow. The effect is not ideal; the cleaning component used to clean the filter component requires manual cleaning by personnel, which is complicated to operate and requires the river to be equipped with professional personnel, and the maintenance cost is high. Summary of the invention

[0004] 1) Technical issues

[0005] 1. How to solve the problem that the existing slope protection structure is poor in reducing the kinetic energy of water flow impact.

[0006] 2. How to solve the problems of filtration, anti-blocking and self-cleaning when backwash water is introduced.

[0007] 3. How to solve the problem of poor paving efficiency of slope protection structure and sealing and anti-leakage of butt assembly.

[0008] 2) Technical solution

[0009] In order to solve the above problems, the inventors propose the following technical solutions:

[0010] A river channel anti-impact dam structure, comprising:

[0011] The dam protection body includes anchors and ramp guard plates, and the ramp guard plates are installed on the slope surface through anchors;

[0012] The dam protection energy dissipation body is installed between the ramp guard plates and is provided with an energy dissipation part exposed outside the ramp guard plates on its surface. The energy dissipation part is used to absorb the impact of water flow and produce elastic deformation. A chamber is provided inside the dam protection energy dissipation body. An extrusion plate is slidably fitted inside the chamber. An air bag body is installed between the extrusion plate and the inner wall of the chamber. The interior of the air bag body is connected to the interior of the energy dissipation part.

[0013] Among them, the side of the ramp guard plate is provided with a tongue and groove, the tongue and groove are used to install the energy dissipation part, and a connecting hole is provided at the tongue and an anti-corrosion high-strength bolt is installed in the connecting hole. The anti-corrosion high-strength bolt passes through a pressure strip and the energy dissipation part is fixed and installed through the pressure strip. A recoil energy dissipation part is provided inside the ramp guard plate. When the energy dissipation part is elastically deformed, the recoil energy dissipation part counteracts the water flow to reversely dissipate energy through the action of the airbag body and the extrusion plate.

[0014] Among them, ramp guard plates, dam energy dissipation bodies, energy dissipation parts and other components are all produced and purchased centrally by manufacturers.

[0015] Preferably, the recoil energy dissipation member comprises an outer water inlet hole, an inner water inlet hole and an inner recoil hole, the size of the inner water inlet hole is greater than or equal to the size of the outer water inlet hole, the size of the inner recoil hole is smaller than the size of the outer water inlet hole, when the airbag body is completely elastically deformed, the positions of the inner recoil hole and the outer water inlet hole correspond, when the airbag body is not elastically deformed, the positions of the inner water inlet hole and the outer water inlet hole correspond, wherein the aperture of the inner recoil hole is larger on the side away from the outer water inlet hole than on the side close to the outer water inlet hole;

[0016] The ramp guard plate is provided with an active cavity inside, a sliding frame is installed in the active cavity in a sliding seal, the inner water inlet hole and the inner recoil hole are both provided on the sliding frame, and the inner water inlet hole is located on the side of the inner recoil hole away from the energy dissipation part;

[0017] The ramp guard plates are all provided with external water inlet holes;

[0018] The ramp guard plate is provided with a connecting hole, a connecting column is slidably fitted in the connecting hole, and the extrusion plate is connected and fixed on the sliding frame through the connecting column.

[0019] Preferably, a reserved air cavity is provided inside the active cavity;

[0020] A return spring is also installed in the chamber. The return spring is located on one side of the connecting column installed on the extrusion plate and is sleeved on the outer side of the connecting column.

[0021] Preferably, the ramp guard plate is provided with a buffer strip 1 and a buffer strip 2 on the upper and lower sides, and two buffer strips are provided for each of the buffer strips 1 and 2, and the external water inlet hole is located between the corresponding buffer strips 1 and 2;

[0022] The buffer strip 1 is fixedly mounted on the ramp guard plate, and the buffer strip 2 is slidably mounted on the ramp guard plate;

[0023] The two buffer bars 1 are located on both sides of the two buffer bars 2, and the two buffer bars 2 are located on both sides of the energy dissipation part;

[0024] Both the first buffer strip and the second buffer strip are provided with slow-release holes.

[0025] Preferably, a pressure plate is installed on the top of the energy dissipation part, and driving rotating rods are rotatably installed on both sides of the pressure plate, and the free ends of the driving rotating rods are rotatably installed on the corresponding buffer strip 2;

[0026] A connector 1 is provided on the side of the buffer strip 2 away from the energy dissipation part, and a filter screen plate for covering the external water inlet hole is installed on the connector 1. A connector 2 is provided on the side of the buffer strip 2 opposite to the energy dissipation part, and a cleaning plate is installed on the connector 2, which is used to scrape the surface of the filter screen plate.

[0027] Preferably, the ends of the ramp guard plates are all installed with docking assemblies, which include an L-shaped docking plate and a U-shaped cover;

[0028] The L-shaped butt joint plate includes a connecting plate and a sealing plate. The connecting plate is fixedly mounted on the end of the ramp guard plate along the width direction. The sealing plate is vertically mounted on the end of the connecting plate away from the ramp guard plate. A sealing sheet is mounted on the side of the sealing plate facing away from the connecting plate.

[0029] The U-shaped cover is mounted on the outside of two sealing plates corresponding to the positions of two adjacent ramp guard plates. An extrusion block and an adjusting member installed on the U-shaped cover are slidably installed inside the U-shaped cover. The adjusting member is used to adjust the distance between the extrusion block and the root of the U-shaped cover. The extrusion block is used to act on the side of the sealing plate that is away from the sealing sheet.

[0030] Preferably, a sealing strip is provided on the outer side of the U-shaped cover, and a long groove is provided on the end of the ramp guard plate, and the long groove and the sealing strip are sealed and adapted.

[0031] Preferably, the side of the extrusion block opposite to the sealing plate is a wedge-shaped surface and the thickness gradually decreases along the side close to the connecting plate, and the side of the sealing plate opposite to the extrusion block is a wedge-shaped surface and the thickness gradually decreases along the side away from the connecting plate.

[0032] Preferably, the U-shaped cover is evenly distributed with through holes, the energy dissipation part is provided with a joint body, and the joint body and the airbag body are socket-installed to connect the interior of the airbag body and the interior of the energy dissipation part;

[0033] Arc grooves are arranged on opposite sides of two sealing plates located inside the U-shaped cover, and the arc grooves are sealed and installed on the outside of the joint body.

[0034] A construction method for a river channel anti-impact dam structure, comprising the following steps:

[0035] Step 1: River channel excavation and slope cutting

[0036] According to the design drawings, the river channel is excavated and the river channel is sloped as required by the design to obtain a slope surface. Geotextile is laid on the slope surface and a wire mesh is laid on the surface of the geotextile. Anchors are fixedly anchored on the wire rods. Embedded boxes are installed on the anchors. The embedded boxes are protected. A concrete cushion is sprayed on the surface of the wire mesh. It is ensured that the ends of the anchors are exposed in the embedded boxes to the size required by the design and are not contaminated by the sprayed concrete, so as to pave the ramp guard plate;

[0037] Step 2: Installation of dam protection energy dissipation body

[0038] Mark the position edge of the dam energy dissipator on the concrete cushion layer and fix it with double-sided tape;

[0039] Step 3: Ramp guard installation

[0040] A connection box is installed on the back of the ramp guard plate. The connection box and the embedded box are located in corresponding positions. A through hole and a hooking groove connected to the through hole are provided on the connection box. A hooking plate is provided at the end of the anchor. The hooking plate is used to penetrate the through hole and enter the interior of the connection box.

[0041] Through the hole and the hook plate position correspond to each other and vertically enter the connection box, the tongue and groove and the dam energy dissipation body position correspond to each other, install the U-shaped cover on the outside of the L-shaped docking plate corresponding to the position of the two adjacent ramp guard plates, and connect the joint body with the airbag body first;

[0042] The sealing plates are moved closer to each other by adjusting the parts until the sealing plates are in a compressed state, and the joint body and the arc groove are in a sealed state;

[0043] Ear plates are provided at both ends of the energy dissipation part, and the ear plates are fixed to the ramp guard plate through pressure strips and anti-corrosion high-strength bolts;

[0044] Step 4, in step 3, while the adjusting member adjusts the extrusion block, the two L-shaped docking plates are moved closer to each other, and the hooking plate is inside the connection box and allows the end of the anchor piece to enter the hooking groove to form a hooking structure;

[0045] Step 5, in step 3, first align the positions of the outer water inlet hole and the inner water inlet hole and insert the insert strips between the two, squeeze the energy dissipation part, so that the connecting column is inserted into the sliding frame and forms a fixed connection, wherein the energy dissipation part is provided with a gas charging and discharging nozzle, and the gas charging and discharging nozzle is used to pre-charge the inside of the energy dissipation part with gas of a set required pressure, and the two ends of the driving rotating rod are respectively connected to the buffer strip 2 and the pressure plate through the rotating shaft;

[0046] When the river water rushes towards the ramp guard plate, the energy dissipation part and the pressure plate undergo elastic deformation after being impacted, so that the internal gas enters the airbag body and pushes the extrusion plate to compress the reset spring. At the same time, the sliding frame moves in the active cavity inside the ramp guard plate, so that the inner water inlet hole and the outer water inlet hole are staggered. After the stagger, as the sliding frame continues to move, the reserved air cavity air inside the active cavity is compressed. When the positions of the inner recoil hole and the outer water inlet hole correspond, the internal water is flushed outward by the high pressure of the inner recoil hole to offset the impact of the water flow. When the energy dissipation part is elastically deformed, the filter screen plate worker and the buffer strip 2 are moved away from the outer water inlet hole under the action of the driving rotating rod. When the positions of the inner recoil hole and the outer water inlet hole correspond, they are in a completely removed state, and the cleaning plate completes a cleaning operation.

[0047] When the water flow in the river recedes, the energy dissipation part is elastically reset in the first time, and the sliding frame and the extrusion plate are reset together under the joint action of the reset spring and the elastic reset of the energy dissipation part, the inner water inlet hole and the outer water inlet hole are re-positioned correspondingly, and at the same time, the second buffer strip drives the filter screen cover to be arranged on the outside of the outer water inlet hole, and the receding water flow is sucked into the active cavity.

[0048] Beneficial Effects

[0049] 1. Compared with the prior art, the present invention can greatly improve the construction efficiency and control quality by adopting an assembled structure, which is convenient for construction and later river maintenance operations. The ramp guard plate is fixed on the slope surface through anchors, and the energy dissipation part of the dam energy dissipation body absorbs the impact of water flow. The elastic deformation makes the airbag body act as an extrusion plate, so that the recoil energy dissipation part in the ramp guard plate can reversely dissipate the high-pressure water flow.

[0050] 2. Compared with the prior art, the present invention adopts a ramp guard plate with a built-in sliding frame. The airbag acts to extrude the plate and the sliding frame, so that the external water inlet hole and the internal water inlet hole or the internal recoil hole selectively correspond to each other, thereby realizing water absorption and counter-impact energy dissipation. The aperture sizes of the external water inlet hole, the internal water inlet hole and the internal recoil hole are utilized to realize high-pressure counter-impact energy dissipation operations.

[0051] 3. Compared with the prior art, the present invention arranges two groups of buffer strips on the ramp guard plate, which are fixed and sliding respectively. The sliding buffer strip is connected to the energy dissipation part through a driving rotating rod, which is beneficial to synchronous movement when the energy dissipation part is elastically deformed, so that the filter screen plate on the sliding buffer strip can selectively cover or detach from the external water inlet hole. When covering, the positions of the external water inlet hole and the internal water inlet hole correspond to prevent the hole from being blocked and debris from entering the active cavity to affect the internal gas compression to form a high-pressure atmosphere. When detached, the cleaning plate on the fixed buffer strip can cooperate to realize automatic cleaning of the filter screen plate.

[0052] 4. Compared with the prior art, the present invention installs docking components between ramp guard plates, and uses a U-shaped cover to dock the sealing plates and compress the sealing plates to form a sealing structure. In the process of approaching each other, the sealing strips and the long grooves will seal and cooperate to form a sealing structure, so that the spliced ​​parts can be treated with anti-seepage, thereby avoiding the problem of collapse of the base soil layer and ensuring the durability of the river slope protection. At the same time, when approaching each other, the hook plate at the end of the anchor will enter the hook groove to form a hook structure, so that the ramp guard plate can be fixed on the concrete cushion layer, improving the structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0054] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0055] Figure 3 for Figure 2 A partial enlarged view of point B in the middle.

[0056] Figure 4 It is a schematic diagram of the overall structure of the U-shaped cover.

[0057] Figure 5 This is the end structure diagram of the ramp guardrail.

[0058] Figure 6 for Figure 1 A partial enlarged view of point C in the middle.

[0059] Figure 7 for Figure 1 The planar structural diagram of the buffer strip, filter plate and cleaning plate on the middle ramp guard plate.

[0060] Figure 8 for Figure 7 Location distribution diagram of external water inlet holes on the surface of the middle ramp guardrail.

[0061] Fig. 9 for Figure 1 A partial enlarged view of point D in the middle.

[0062] Fig.10 for Fig. 9 Bottom plan view of the connection box.

[0063] In the figure:

[0064] 10. Dam protection body; 11. Anchor; 111. Embedded box; 112. Connection box; 1121. Through hole; 1122. Hooking groove; 113. Hooking plate; 12. Ramp guard plate; 121. Recoil energy dissipation member; 1211. External water inlet hole; 1212. Internal water inlet hole; 1213. Internal recoil hole; 1214. Active cavity; 1215. Sliding frame; 1216. Reset spring; 1217. Buffer strip 1; 1218. Buffer strip 2; 1219. Driving rotating rod; 1220. Filter screen plate; 1221. Cleaning plate; 13. L-shaped docking plate; 131. Connection plate; 132. Sealing plate; 133. Sealing sheet; 134. Extrusion block; 135. Adjustment member; 136. Sealing strip; 137. Long strip groove; 138. Joint body; 14. U-shaped cover;

[0065] 20. Dam protection energy dissipation body; 21. Energy dissipation part; 211. Ear strip plate; 212. Pressure plate; 22. Extrusion plate; 23. Airbag body; 24. Pressure strip. DETAILED DESCRIPTION

[0066] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0067] Example 1

[0068] like Figure 1 to Figure 2 As shown, a river channel anti-impact dam structure includes a dam body 10 and a dam energy dissipation body 20.

[0069] The dam protection body 10 includes an anchor 11 and a ramp guard plate 12 . The ramp guard plate 12 is installed on the slope surface through the anchor 11 .

[0070] The dam protection energy dissipation body 20 is installed between the ramp guard plates 12 and has an energy dissipation portion 21 exposed outside the ramp guard plates 12 on its surface. The energy dissipation portion 21 is used to absorb the impact of water flow and produce elastic deformation. A chamber is provided inside the dam protection energy dissipation body 20, and an extrusion plate 22 is slidably fitted in the chamber. An airbag body 23 is installed between the extrusion plate 22 and the inner wall of the chamber, and the interior of the airbag body 23 is connected to the interior of the energy dissipation portion 21.

[0071] Among them, the side of the ramp guard plate 12 is provided with a tongue and groove, and the tongue and groove are used to install the energy dissipation part 21. A connecting hole is provided at the tongue and an anti-corrosion high-strength bolt is installed in the connecting hole. The anti-corrosion high-strength bolt passes through a pressure strip 24 and the energy dissipation part 21 is fixedly installed by the pressure strip 24. A recoil energy dissipation part 121 is provided inside the ramp guard plate 12. When the energy dissipation part 21 is elastically deformed, the recoil energy dissipation part 121 is acted upon by the airbag body 23 and the extrusion plate 22 to reversely dissipate energy by counteracting the water flow.

[0072] like Figure 6 , 8 As shown, the recoil energy dissipation component 121 includes an outer water inlet hole 1211, an inner water inlet hole 1212 and an inner recoil hole 1213. The size of the inner water inlet hole 1212 is greater than or equal to the size of the outer water inlet hole 1211, and the size of the inner recoil hole 1213 is smaller than the size of the outer water inlet hole 1211. When the airbag body 23 is completely elastically deformed, the positions of the inner recoil hole 1213 and the outer water inlet hole 1211 correspond. When the airbag body 23 is not elastically deformed, the positions of the inner water inlet hole 1212 and the outer water inlet hole 1211 correspond, wherein the aperture of the inner recoil hole 1213 is larger on the side away from the outer water inlet hole 1211 than on the side close to the outer water inlet hole 1211.

[0073] The ramp guard plate 12 is provided with an active cavity 1214 inside which a sliding frame 1215 is installed in a sliding seal. The inner water inlet hole 1212 and the inner recoil hole 1213 are both provided on the sliding frame 1215 . The inner water inlet hole 1212 is located on a side of the inner recoil hole 1213 away from the energy dissipation portion 21 .

[0074] The ramp guard plates 12 are each provided with an external water inlet hole 1211 .

[0075] The ramp guard plate 12 is provided with a connecting hole, in which a connecting column is slidably fitted, and the extrusion plate 22 is connected and fixed to the sliding frame 1215 via the connecting column.

[0076] The active cavity 1214 is provided with a reserved air cavity inside;

[0077] A return spring 1216 is also installed in the chamber, and the return spring 1216 is used to return the extrusion plate 22 and the airbag 23. The return of the airbag 23 is caused by the return spring 1216 and the elastic deformation of the energy dissipation part 21. The return spring 1216 is located on one side of the extrusion plate 22 to install the connecting column and is sleeved on the outside of the connecting column.

[0078] The energy dissipation body 21 absorbs the impact of water flow and undergoes elastic deformation, so that the internal gas enters the airbag body 23 and drives the extrusion plate 22 to move outward, and drives the sliding frame 1215 to slide in the active cavity 1214 through the connecting column, so that the external water inlet hole 1211 selectively corresponds to the internal water inlet hole 1212 or the internal recoil hole 1213, so that the high-pressure recoil water flow can weaken the kinetic energy of the water flow impact and absorb water when the water flow retreats to wait for the next water flow impact.

[0079] Example 2

[0080] On the basis of the above embodiments, in order to solve the problem that the external water inlet hole 1211 is blocked and debris enters the active cavity 1214 to affect the high-pressure recoil effect:

[0081] like Figure 1 , 6As shown in Figures 7 and 8, the ramp guard plate 12 is provided with a buffer bar 1217 and a buffer bar 1218 on the upper and lower sides. There are two buffer bars 1217 and two buffer bars 1218, and the external water inlet hole 1211 is located between the corresponding buffer bars 1217 and 1218.

[0082] The buffer strip 1 1217 is fixedly mounted on the ramp guard plate 12 , and the buffer strip 2 1218 is slidably mounted on the ramp guard plate 12 .

[0083] The two first buffer bars 1217 are located on both sides of the two second buffer bars 1218 , and the two second buffer bars 1218 are located on both sides of the energy dissipation portion 21 .

[0084] Both the buffer strip 1 1217 and the buffer strip 2 1218 are provided with slow-release holes.

[0085] A pressure plate 212 is installed on the top of the energy dissipation part 21 , and driving rotating rods 1219 are rotatably installed on both sides of the pressure plate 212 , and the free ends of the driving rotating rods 1219 are rotatably installed on the corresponding buffer strip 1218 .

[0086] A connecting piece 1 is provided on the side of the buffer strip 1218 away from the energy dissipation portion 21, and a filter screen plate 1220 for covering the external water inlet hole 1211 is installed on the connecting piece 1. A connecting piece 2 is provided on the side of the buffer strip 1218 opposite to the energy dissipation portion 21, and a cleaning plate 1221 is installed on the connecting piece 2, and the cleaning plate 1221 is used to scrape the surface of the filter screen plate 1220.

[0087] When the energy dissipation part 21 is elastically deformed under pressure, the buffer strip 1218 slides along the ramp guard plate 12 under the action of the driving rotating rod 1219, so that the filter screen plate 1220 is separated from the external water inlet hole 1211, and cooperates with the cleaning plate 1221 to clean the filter screen plate 1220. When the energy dissipation part 21 is elastically reset, the filter screen plate 1220 returns to its original position and is re-covered at the water inlet hole to prevent debris from entering and affecting the high-pressure recoil effect and the problem of clogging the external water inlet hole.

[0088] Example 3

[0089] On the basis of the above embodiments, in order to solve the problem that the assembled slope protection structure is prone to water seepage at the assembly joints, resulting in collapse of the bottom base:

[0090] like Figure 2 , 3 As shown in , 4, 5, and 8, the ends of the ramp guard plate 12 are installed with docking components, and the docking components include an L-shaped docking plate 13 and a U-shaped cover 14.

[0091] The L-shaped docking plate 13 includes a connecting plate 131 and a sealing plate 132. The connecting plate 131 is fixedly installed at the end of the ramp guard plate 12 along the width direction. The sealing plate 132 is vertically installed at the end of the connecting plate 131 away from the ramp guard plate 12. A sealing sheet 133 is installed on the side of the sealing plate 132 facing away from the connecting plate 131.

[0092] The U-shaped cover 14 is mounted on the outside of two sealing plates 132 corresponding to the positions of two adjacent ramp guard plates 12. An extrusion block 134 and an adjusting member 135 installed on the U-shaped cover 14 are slidably installed inside the U-shaped cover 14. The adjusting member 135 is used to adjust the distance between the extrusion block 134 and the root of the U-shaped cover 14. The extrusion block 134 (U-shaped structure) is used to act on the side of the sealing plate 132 facing away from the sealing sheet 133. The position of the extrusion block 134 is adjusted by the adjusting member 135 so that the sealing plate 132 is close to the extrusion sealing sheet 133. The adjusting member 135 is a combination of an elastic telescopic body and a bolt. The downward extrusion of the extrusion block 134 is achieved by the progressive advancement of the bolt to extrude the sealing plate 132. The elastic telescopic body is used to drive the extrusion block 134 to automatically reset.

[0093] The U-shaped cover 14 is provided with a sealing strip 136 on its outer side, and the ramp guard plate 12 is provided with a long groove 137 at its end, and the long groove 137 and the sealing strip 136 are sealed and adapted. In the process of approaching each other, the sealing strip 136 and the long groove 137 are sealed and matched, so that the docking assembly forms a multi-channel sealing structure to ensure anti-seepage performance.

[0094] The side of the extrusion block 134 opposite to the sealing plate 132 is a wedge-shaped surface and the thickness gradually decreases along the side close to the connecting plate 131 . The side of the sealing plate 132 opposite to the extrusion block 134 is a wedge-shaped surface and the thickness gradually decreases along the side away from the connecting plate 131 .

[0095] The U-shaped cover 14 is evenly distributed with through holes, and the energy dissipation part 21 is provided with a joint body 138 . The joint body 138 and the airbag body 23 are installed in a socket manner to connect the interior of the airbag body 23 with the interior of the energy dissipation part 21 .

[0096] Arc-shaped grooves are provided on opposite sides of the two sealing plates 132 located inside the U-shaped cover 14 , and the arc-shaped grooves are sealed and installed on the outer side of the joint body 138 .

[0097] The construction method of the river channel anti-impact dam structure is as follows:

[0098] Step 1: River channel excavation and slope cutting

[0099] According to the design drawings, the river channel is excavated and the river channel is sloped according to the design requirements to obtain a slope surface, a geotextile is laid on the slope surface and a wire mesh is laid on the surface of the geotextile, and an anchor 11 is fixedly anchored on the wire rod, and an embedded box 111 is installed on the anchor 11, such as Figure 1 ,9 As shown, the embedded box 111 is protected, a concrete cushion is sprayed on the surface of the wire mesh, and the end of the anchor 11 is ensured to be exposed in the embedded box 111 to the required size and not be contaminated by the sprayed concrete, so as to pave the ramp guard plate 12;

[0100] Step 2: Installation of the dam energy dissipation body 20

[0101] Mark the position edge of the dam energy dissipation body 20 on the concrete cushion layer, and fix it with double-sided tape;

[0102] Step 3: Installation of ramp guard plate 12

[0103] like Figure 1 , 9 As shown in FIG. 10 , a connection box 112 is installed on the back of the ramp guard plate 12. The connection box 112 and the embedded box 111 are located in corresponding positions. The connection box 112 is provided with a through hole 1121 and a hooking groove 1122 connected to the through hole 1121. A hooking plate 113 is provided at the end of the anchor 11. The hooking plate 113 is used to penetrate the through hole 1121 and enter the interior of the connection box 112.

[0104] Through the hole 1121 and the hook plate 113, the position of the connection box 112 is aligned and vertically entered, the tongue and groove correspond to the position of the dam energy dissipation body 20, and the U-shaped cover 14 is installed on the outer side of the L-shaped docking plate 13 corresponding to the position of the two adjacent ramp guard plates 12, and the joint body 138 is first connected with the airbag body 23;

[0105] The sealing plates 132 are moved closer to each other by adjusting the member 135 until the sealing sheet 133 is in a compressed state, and the joint body 138 and the arc groove are in a sealed state;

[0106] The two ends of the energy dissipation part 21 are provided with ear strips 211, and the ear strips 211 are fixed on the ramp guard plate 12 through the pressure strips 24 and the anti-corrosion high-strength bolts;

[0107] Step 4, in step 3, while the adjusting member 135 adjusts the extrusion block 134, the two L-shaped docking plates 13 are moved closer to each other, and the hooking plate 113 is inside the connection box 112 and allows the end of the anchor 11 to enter the hooking groove 1122 to form a hooking structure;

[0108] Step 5, in step 3, first align the positions of the outer water inlet hole 1211 and the inner water inlet hole 1212 and insert a plug between the two to prevent displacement, squeeze the energy dissipation part 21, so that the connecting column is inserted into the sliding frame 1215 and forms a fixed connection, and then pull out the plug, wherein the energy dissipation part 21 is provided with a gas charging and discharging nozzle, and the gas charging and discharging nozzle is used to pre-charge the inside of the energy dissipation part 21 with gas of a set required pressure, thereby ensuring the moving distance of the sliding frame 1215, so that the gas in the reserved air cavity can be compressed, so that the water inside is flushed out with high pressure, and the two ends of the driving rotating rod 1219 are respectively connected to the buffer strip 2 1218 and the pressure plate 212 through the rotating shaft;

[0109] When the river water rushes towards the ramp guard plate 12, the energy dissipation part 21 and the pressure plate 212 are elastically deformed after being impacted, so that the internal gas enters the airbag body 23 and pushes the extrusion plate 22 to compress the return spring 1216. At the same time, the sliding frame 1215 moves in the active cavity 1214 inside the ramp guard plate 12, so that the inner water inlet hole 1212 and the outer water inlet hole 1211 are staggered. After the stagger, as the sliding frame 1215 continues to move, the air in the reserved air cavity inside the active cavity 1214 is released. By compression, when the positions of the inner recoil hole 1213 and the outer water inlet hole 1211 correspond, the internal water is flushed outward by the inner recoil hole 1213 at high pressure to offset the impact of the water flow, wherein when the energy dissipation part 21 is elastically deformed, the filter plate 1220 and the buffer bar 1218 are moved away from the outer water inlet hole 1211 under the action of the driving rotating rod 1219, and when the positions of the inner recoil hole 1213 and the outer water inlet hole 1211 correspond, they are in a completely removed state, and a cleaning operation is completed by the cleaning plate 1221;

[0110] When the water flow in the river recedes, the energy dissipation part 21 is elastically reset in the first time, and the sliding frame 1215 and the extrusion plate 22 are reset together under the joint action of the reset spring 1216 and the elastic reset of the energy dissipation part 21, and the inner water inlet hole 1212 and the outer water inlet hole 1211 are re-positioned correspondingly, and at the same time, the buffer strip 1218 drives the filter screen plate 1220 to cover the outer side of the outer water inlet hole 1211, and the receding water flow is sucked into the active cavity 1214.

[0111] When the ramp guard plate 12 is damaged by water erosion and corrosion, the pressure strip 24, docking assembly and energy dissipation part 21 are removed at one time, and the airbag body 23 is connected to the negative pressure extraction equipment to separate the connecting column and the sliding frame 1215. The position of the ramp guard plate 12 is adjusted along the slope surface, and the steps of removal and replacement are repeated to complete the maintenance work.

[0112] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A river channel anti-impact dam structure, characterized in that: include: A dam protection body (10), the dam protection body (10) comprising an anchor (11) and a ramp guard plate (12), the ramp guard plate (12) being installed on the slope surface via the anchor (11); A dam protection energy dissipation body (20), the dam protection energy dissipation body (20) is installed between ramp guard plates (12) and is provided with an energy dissipation portion (21) exposed outside the ramp guard plates (12) on its surface, the energy dissipation portion (21) being used to absorb water flow impact and generate elastic deformation, a chamber is provided inside the dam protection energy dissipation body (20), an extrusion plate (22) is slidably fitted inside the chamber, an air bag body (23) is installed between the extrusion plate (22) and the inner wall of the chamber, and the interior of the air bag body (23) is communicated with the interior of the energy dissipation portion (21); The side of the ramp guard plate (12) is provided with a tongue and groove, the tongue and groove are used to install the energy dissipation part (21), a connection hole is provided at the tongue and an anti-corrosion high-strength bolt is installed in the connection hole, the anti-corrosion high-strength bolt passes through a pressure strip (24) and fixes the energy dissipation part (21) through the pressure strip (24), and a recoil energy dissipation part (121) is provided inside the ramp guard plate (12), and when the energy dissipation part (21) is elastically deformed, the recoil energy dissipation part (121) counteracts the water flow to dissipate energy in the reverse direction through the action of the airbag body (23) and the extrusion plate (22).

2. A river channel anti-impact dam structure according to claim 1, characterized in that: The recoil energy dissipation member (121) comprises an outer water inlet hole (1211), an inner water inlet hole (1212) and an inner recoil hole (1213); the size of the inner water inlet hole (1212) is greater than or equal to the size of the outer water inlet hole (1211); the size of the inner recoil hole (1213) is smaller than the size of the outer water inlet hole (1211); when the airbag body (23) is completely elastically deformed, the inner recoil hole (1213) and the outer water inlet hole (1211) correspond in position; when the airbag body (23) is not elastically deformed, the inner water inlet hole (1212) and the outer water inlet hole (1211) correspond in position; wherein the diameter of the inner recoil hole (1213) is larger on a side away from the outer water inlet hole (1211) than on a side close to the outer water inlet hole (1211); The ramp guard plate (12) is provided with an active cavity (1214) inside, a sliding frame (1215) is slidably sealed and installed inside the active cavity (1214), the inner water inlet hole (1212) and the inner recoil hole (1213) are both provided on the sliding frame (1215), and the inner water inlet hole (1212) is located on a side of the inner recoil hole (1213) away from the energy dissipation portion (21); The ramp guard plates (12) are each provided with an external water inlet hole (1211); The ramp guard plate (12) is provided with a connection hole, in which a connection column is slidably fitted, and the extrusion plate (22) is connected and fixed to the sliding frame (1215) via the connection column.

3. A river channel anti-impact dam structure according to claim 2, characterized in that: A reserved air cavity is provided inside the active cavity (1214); A return spring (1216) is also installed in the chamber. The return spring (1216) is located on one side of the connecting column installed on the extrusion plate (22) and is sleeved on the outer side of the connecting column.

4. A river channel anti-impact dam structure according to claim 3, characterized in that: The ramp guard plate (12) is provided with a buffer strip 1 (1217) and a buffer strip 2 (1218) on the upper and lower sides, and the buffer strip 1 (1217) and the buffer strip 2 (1218) are both provided with two, and the external water inlet hole (1211) is located between the corresponding buffer strip 1 (1217) and the buffer strip 2 (1218); The buffer strip 1 (1217) is fixedly mounted on the ramp guard plate (12), and the buffer strip 2 (1218) is slidably mounted on the ramp guard plate (12); The two buffer strips 1 (1217) are located on both sides of the two buffer strips 2 (1218), and the two buffer strips 2 (1218) are located on both sides of the energy dissipation portion (21); Both the buffer strip 1 (1217) and the buffer strip 2 (1218) are provided with slow-release holes.

5. A river channel anti-impact dam structure according to claim 4, characterized in that: A pressure plate (212) is installed on the top of the energy dissipation part (21), and driving rotating rods (1219) are rotatably installed on both sides of the pressure plate (212), and the free ends of the driving rotating rods (1219) are rotatably installed on the corresponding buffer strip 2 (1218); A connecting piece 1 is provided on the side of the buffer strip 2 (1218) away from the energy dissipation portion (21), and a filter screen plate (1220) for covering the external water inlet hole (1211) is installed on the connecting piece 1; a connecting piece 2 is provided on the side of the buffer strip 2 (1218) opposite to the energy dissipation portion (21), and a cleaning plate (1221) is installed on the connecting piece 2, and the cleaning plate (1221) is used to scrape the surface of the filter screen plate (1220).

6. A river channel anti-impact dam structure according to claim 5, characterized in that: The ends of the ramp guard plates (12) are all equipped with docking assemblies, which include an L-shaped docking plate (13) and a U-shaped cover (14); The L-shaped docking plate (13) comprises a connecting plate (131) and a sealing plate (132), wherein the connecting plate (131) is fixedly mounted on the end of the ramp guard plate (12) along the width direction, the sealing plate (132) is vertically mounted on the end of the connecting plate (131) away from the ramp guard plate (12), and a sealing sheet (133) is mounted on the side of the sealing plate (132) facing away from the connecting plate (131); The U-shaped cover (14) is sleeved on the outer sides of two sealing plates (132) corresponding to the positions of two adjacent ramp guard plates (12); an extrusion block (134) and an adjusting member (135) installed on the U-shaped cover (14) are slidably installed inside the U-shaped cover (14); the adjusting member (135) is used to adjust the distance between the extrusion block (134) and the root of the U-shaped cover (14); the extrusion block (134) is used to act on the side of the sealing plate (132) facing away from the sealing sheet (133).

7. A river channel anti-impact dam structure according to claim 6, characterized in that: A sealing strip (136) is provided on the outer side of the U-shaped cover (14), and a long groove (137) is provided on the end of the ramp guard plate (12), and the long groove (137) and the sealing strip (136) are sealed and adapted.

8. A river channel anti-impact dam structure according to claim 7, characterized in that: The side of the extrusion block (134) opposite to the sealing plate (132) is a wedge-shaped surface, and the thickness gradually decreases along the side close to the connecting plate (131); the side of the sealing plate (132) opposite to the extrusion block (134) is a wedge-shaped surface, and the thickness gradually decreases along the side away from the connecting plate (131).

9. A river channel anti-impact dam structure according to claim 8, characterized in that: The U-shaped cover (14) is evenly provided with through holes, the energy dissipation part (21) is provided with a joint body (138), and the joint body (138) and the airbag body (23) are installed in a socket-type manner to connect the interior of the airbag body (23) and the interior of the energy dissipation part (21); Arc grooves are arranged on opposite sides of two sealing plates (132) located inside the U-shaped cover (14), and the arc grooves are sealed and installed on the outside of the joint body (138).

10. A construction method for a river channel anti-impact dam structure according to claim 9, characterized in that: Here are the steps: Step 1: River channel excavation and slope cutting According to the requirements of the design drawings, a river channel is excavated and the river channel is sloped according to the design requirements to obtain a slope surface, a geotextile is laid on the slope surface and a steel mesh is laid on the surface of the geotextile, an anchor (11) is fixedly anchored on the steel rod, an embedded box (111) is installed on the anchor (11), the embedded box (111) is protected, a concrete cushion layer is sprayed on the surface of the steel mesh, and it is ensured that the end of the anchor (11) is exposed in the embedded box (111) to a size required by the design and is not contaminated by the sprayed concrete, so as to pave the ramp guard plate (12); Step 2: Installation of the dam energy dissipation body (20) Marking the position edge of the dam energy dissipation body (20) on the concrete cushion layer, and connecting and fixing it with double-sided adhesive tape; Step 3: Installation of ramp guard plate (12) A connection box (112) is installed on the back of the ramp guard plate (12), the connection box (112) and the embedded box (111) are located in corresponding positions, a through hole (1121) and a hooking groove (1122) connected to the through hole (1121) are provided on the connection box (112), and a hooking plate (113) is provided at the end of the anchor (11), and the hooking plate (113) is used to penetrate the through hole (1121) and enter the interior of the connection box (112); The position of the through hole (1121) and the hook plate (113) are aligned and vertically enter the interior of the connection box (112), the position of the tongue and groove and the position of the dam energy dissipation body (20) are aligned, and a U-shaped cover (14) is installed on the outer side of the L-shaped docking plate (13) at the corresponding position on two adjacent ramp guard plates (12), and the joint body (138) is first connected to the airbag body (23); The sealing plates (132) are moved closer to each other by means of an adjusting member (135) until the sealing sheet (133) is in a compressed state, and at the same time, the joint body (138) and the arc groove are in a sealed state; Ear plates (211) are provided at both ends of the energy dissipation part (21), and the ear plates (211) are fixed to the ramp guard plate (12) through a pressure strip (24) and anti-corrosion high-strength bolts; Step 4, in step 3, while the adjusting member (135) adjusts the extrusion block (134), the two L-shaped docking plates (13) are moved closer to each other, and the hooking plate (113) is inside the connection box (112) and allows the end of the anchor member (11) to enter the hooking groove (1122) to form a hooking structure; Step 5, in step 3, first align the positions of the outer water inlet hole (1211) and the inner water inlet hole (1212) and insert a plug strip therebetween, squeeze the energy dissipation part (21), so that the connecting column is inserted into the sliding frame (1215) and a fixed connection is formed, wherein the energy dissipation part (21) is provided with a gas charging and discharging nozzle, and the inside of the energy dissipation part (21) is pre-charged with gas of a set required pressure by using the gas charging and discharging nozzle, and the two ends of the driving rotating rod (1219) are respectively connected to the buffer strip 2 (1218) and the pressure plate (212) through a rotating shaft; When the river water rushes toward the ramp guard plate (12), the energy dissipation part (21) and the pressure plate (212) are elastically deformed after being impacted, so that the internal gas enters the air bag body (23) and pushes the extrusion plate (22) to compress the return spring (1216). At the same time, the sliding frame (1215) moves in the active cavity (1214) inside the ramp guard plate (12), so that the inner water inlet hole (1212) and the outer water inlet hole (1211) are staggered. After the stagger, as the sliding frame (1215) continues to move, the reserved air cavity inside the active cavity (1214) is empty. The gas is compressed, and when the positions of the inner recoil hole (1213) and the outer water inlet hole (1211) correspond, the internal water is flushed outward at high pressure from the inner recoil hole (1213) to offset the impact of the water flow, wherein when the energy dissipation portion (21) is elastically deformed, the filter screen plate (1220) and the second buffer strip (1218) are moved away from the outer water inlet hole (1211) under the action of the driving rotating rod (1219), and when the positions of the inner recoil hole (1213) and the outer water inlet hole (1211) correspond, they are in a completely removed state, and a cleaning operation is completed by the cleaning plate (1221); When the water flow in the river retreats, the energy dissipation part (21) is elastically reset at the first time, and the sliding frame (1215) and the extrusion plate (22) are reset together under the joint action of the reset spring (1216) and the elastic reset of the energy dissipation part (21), and the inner water inlet hole (1212) and the outer water inlet hole (1211) are repositioned correspondingly, and at the same time, the second buffer strip (1218) drives the filter screen plate (1220) to cover the outer side of the outer water inlet hole (1211), and the retreating water flow is sucked into the inside of the active chamber (1214).

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