River channel dam anti-scouring structure

Abstract

The utility model discloses a riverway dam anti-scour structure which comprises a bottom protective layer and a top protective layer, an auxiliary material layer is arranged between the bottom protective layer and the top protective layer, a plurality of connecting locking mechanisms are arranged among the bottom protective layer, the auxiliary material layer and the top protective layer, an inverted filter screen is fixedly connected to the bottom protective layer, and the inverted filter screen is fixedly connected to the top protective layer. And floating mechanisms are arranged on the two sides of the top protection layer, and each connecting and locking mechanism comprises a fixing base and a connecting base. According to the anti-scouring structure for the river channel dam, four limiting rods on a connecting base penetrate through the net-shaped cross position of a bottom protection layer and a top protection layer, a locking block is inserted into a fixing base, then a rotating head is rotated to fix the locking block, and the bottom protection layer, an auxiliary material layer and the top protection layer are firmly fixed together; the bottom protective layer, the auxiliary material layer, the top protective layer and the inverted filter screen can achieve a good inverted filter effect, the anti-scouring capacity is improved, and sinking drainage construction is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of river dike protection, in particular to an anti-scouring structure for river dikes. Background Technique

[0002] Scouring and silting changes generally exist in natural rivers. For important river sections affected by geographical conditions and river regime development, they are in a long-term scouring state, resulting in the annual recession of the riverbank line, threatening the safety of the people, cultivated land, dike buildings, etc. behind. It is necessary to take engineering protection measures on the water-facing side of the riverbank to weaken the scouring effect of the water flow on the riverbank and maintain the relative stability of the riverbank. Combining the analysis of the damage mechanism of the riverbank scoured by the water flow, the scouring of the water flow on the riverbank often starts with scouring the underwater part of the riverbank slope. By continuously carrying away sediment, after the formation of an underwater steep bank collapse, it further affects the successive collapse of the upper part of the water bank slope. Therefore, the protection of the underwater part of the riverbank slope is crucial, which is called "toe protection project" in engineering. For most natural rivers, especially large rivers and great rivers, there is basically water all year round. The construction of the toe protection project has the particularity of water operation, so the engineering measures for underwater protection are relatively limited. At present, it mainly includes stone pitching for toe protection, geotextile mattress for toe protection, and hinged concrete mattress for toe protection.

[0003] For stone pitching for toe protection, after positioning on the water, stones are directly pitched into the water. The stones sink to the bottom of the river to form a certain thickness, playing a protective role for the river bottom. Since the quality of the stone pitching project on the water is difficult to guarantee, especially in deep water areas, affected by the water flow, stones of different particle sizes are difficult to sink to the bottom of the river along the established trajectory during the sinking process, resulting in a large amount of stone consumption, uneven underwater stone pitching thickness, and poor integrity of the stone pitching. At the same time, the stone pitching is in direct contact with the riverbed, and there are large gaps between the stone pitching. Under the long-term action of the water flow, the sediment at the river bottom is easy to flow out from the gaps between the stones, and the anti-filtration effect is weak, making it difficult to effectively control the occurrence of river bottom scouring phenomenon for a long time.

[0004] For geotextile mattress for toe protection, using the anti-filtration effect of geotextiles, by setting a certain ballast with materials such as stones and precast blocks above it, the mattress is sunk to the bottom of the river to play a protective role. Since the geotextile material is relatively thin and light, and the anti-scouring ability is weak, the mattress is easy to be damaged during the sinking construction process, and it is difficult to ensure the construction quality control.

[0005] For hinged concrete mattress for toe protection, it is usually used in combination with geotextiles. Concrete blocks of a certain specification prefabricated in advance are connected in series by hinges to form a sheet-like mattress, and a geotextile anti-filtration layer is set under the mattress. After positioning on the water by a ship, the entire mattress is sunk into the water to make the mattress contact with the riverbed and play a protective role for the river bottom. Since the hinged concrete mattress is large and heavy, the sinking construction is relatively difficult, and it is easy to damage the geotextile under the mattress during the construction, thereby affecting the anti-filtration effect, and the consumption of precast concrete blocks is large, and the project cost is high. Content of the Utility Model

[0006] In view of the deficiencies of the prior art, the utility model provides an anti-erosion structure for river dikes, which solves the above problems.

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: an anti-erosion structure for river dikes, including a bottom protection layer and a top protection layer. There is an auxiliary material layer between the bottom protection layer and the top protection layer. There are multiple connection and locking mechanisms between the bottom protection layer, the auxiliary material layer and the top protection layer. An anti-filter net is fixedly connected to the bottom protection layer, and floating mechanisms are arranged on both sides of the top protection layer;

[0008] The connection and locking mechanism includes a fixed seat and a connection seat. Four limiting rods are fixedly connected to the top of the connection seat. Locking blocks are fixedly connected to the tops of the four limiting rods. A rotating head is rotatably connected to the fixed seat. A locking screw rod is fixedly connected to the bottom end of the rotating head. A locking nut is threadedly connected to the locking screw rod. Four pairs of guiding rods are fixedly connected inside the fixed seat. Limiting blocks are slidably connected to each pair of guiding rods. Locking grooves are formed on the outer surface of each limiting block. Rotating seats are fixedly connected to the top surfaces of the four limiting blocks and the outer surface of the locking nut. Connecting rods are rotatably connected between adjacent two rotating seats.

[0009] Preferably, both the bottom protection layer and the top protection layer are provided with a mesh structure, and multiple connection and locking mechanisms are arranged at the mesh intersections of the bottom protection layer and the top protection layer, so as to increase the connection firmness between the bottom protection layer and the top protection layer.

[0010] Preferably, the locking screw rod is rotatably connected to the inner wall of the fixed seat, and the top end of the locking screw rod penetrates through the fixed seat and is connected to the external rotating head, so that the locking screw rod can be driven to rotate by the rotating head.

[0011] Preferably, the shapes of multiple limiting blocks are all set to be fan-shaped, and the limiting blocks are arranged through the guiding rods, so that the limiting blocks can move along the guiding rods, playing a guiding role in the movement of the limiting blocks.

[0012] Preferably, the locking groove is matched with the locking block, and multiple slots are formed on the bottom surface of the fixed seat, and the slots are matched with the locking block, so that the locking block can enter the inside of the fixed seat through the slot, and the locking block is clamped and fixed by using the locking groove.

[0013] Preferably, one end of the connecting rod is rotatably connected to the locking nut through a rotating seat, and the other end of the connecting rod is rotatably connected to the limiting block through a rotating seat, so that the locking nut can drive the limiting block to move through the connecting rod and the rotating seat.

[0014] Preferably, the floating mechanism includes a floating cylinder, on which a pull ring is fixedly connected. The floating cylinder is fixedly installed on the top protection layer, so that the floating cylinder can float on the water surface, facilitating the use of a boat to pull it to a designated position.

[0015] Preferably, a threaded interface is provided at the end of the floating cylinder, and a sealing cover is provided outside the threaded interface. A sealing ring is provided inside the sealing cover, which can improve airtightness.

[0016] The utility model provides an anti-scouring structure for river dikes. Compared with the prior art, it has the following beneficial effects:

[0017] 1. For this anti-scouring structure of the river dike, by passing the four limit rods on the connecting seat through the mesh cross of the bottom protection layer and the top protection layer, inserting the locking block into the fixing seat, and then rotating the rotating head to fix the locking block, the bottom protection layer, the auxiliary material layer and the top protection layer are firmly fixed together. The bottom protection layer, the auxiliary material layer, the top protection layer and the anti-filter net can play a good anti-filter effect, improve the anti-scouring ability, and facilitate the sinking mat construction.

[0018] 2. For this anti-scouring structure of the river dike, by tightening the sealing cover and the sealing ring on the threaded interface to seal the floating cylinder, the whole can float on the water surface, facilitating the boat to pull it to the sinking mat construction position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the utility model;

[0020] Figure 2 is the structural schematic diagram of the connection and locking mechanism of the utility model;

[0021] Figure 3 is the connection structural schematic diagram between the rotating head and the limit clamping block of the utility model;

[0022] Figure 4 is the structural schematic diagram of the floating mechanism of the utility model.

[0023] In the figure: 1. Bottom protection layer; 2. Connection and locking mechanism; 201. Fixing seat; 202. Connecting seat; 203. Limit rod; 204. Locking block; 205. Rotating head; 206. Locking screw; 207. Locking nut; 208. Guide rod; 209. Limit clamping block; 210. Locking slot; 211. Rotating seat; 212. Connecting rod; 3. Auxiliary material layer; 4. Top protection layer; 5. Anti-filter net; 6. Floating mechanism; 601. Floating cylinder; 602. Pull ring; 603. Threaded interface; 604. Sealing cover; 605. Sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-3 , the present utility model provides a technical solution: an anti-erosion structure for a river embankment, including a bottom protection layer 1 and a top protection layer 4. The bottom protection layer 1 and the top protection layer 4 are made of oak strips and can play a good role in preventing erosion. There is an auxiliary material layer 3 between the bottom protection layer 1 and the top protection layer 4. The auxiliary material layer 3 is laid with 0.3 m thick oak strips, 0.1 m thick reeds, and 0.2 m thick oak strips as protection auxiliary materials from bottom to top, which can improve the protection effect. There are multiple connection and locking mechanisms 2 between the bottom protection layer 1, the auxiliary material layer 3, and the top protection layer 4. Both the bottom protection layer 1 and the top protection layer 4 are provided with a mesh structure, and multiple connection and locking mechanisms 2 are arranged at the mesh intersections of the bottom protection layer 1 and the top protection layer 4, so as to increase the connection firmness between the bottom protection layer 1 and the top protection layer 4. An anti-filter net 5 is fixedly connected to the bottom protection layer 1. The smaller pores of the anti-filter net 5 can effectively prevent the loss of river bottom sediment. Floating mechanisms 6 are provided on both sides of the top protection layer 4. The bottom protection layer 1 and the top protection layer 4 can be connected and locked through the connection and locking mechanisms 2, and then stones are loaded on the top of the top protection layer 4 for sinking. This can reduce the weight, ensure the material thickness, play a good anti-filter effect, improve the anti-erosion ability, and facilitate the sinking construction.

[0026] The connecting and locking mechanism 2 includes a fixed seat 201 and a connecting seat 202. Four limiting rods 203 are fixedly connected to the top of the connecting seat 202. The four limiting rods 203 can be located at the mesh cross of the bottom protective layer 1 and the top protective layer 4, thus effectively improving the connection stability. Locking blocks 204 are fixedly connected to the tops of the four limiting rods 203. A rotating head 205 is rotatably connected to the fixed seat 201. A locking screw 206 is fixedly connected to the bottom end of the rotating head 205. The locking screw 206 is rotatably connected to the inner wall of the fixed seat 201. The top end of the locking screw 206 penetrates through the fixed seat 201 and is connected to the external rotating head 205, enabling the rotating head 205 to drive the locking screw 206 to rotate. A locking nut 207 is threadedly connected to the locking screw 206. Four pairs of guide rods 208 are fixedly connected inside the fixed seat 201. Limiting blocks 209 are slidably connected to each pair of guide rods 208. The shapes of the multiple limiting blocks 209 are all set as sectors, and the limiting blocks 209 are penetrated by the guide rods 208, enabling the limiting blocks 209 to move along the guide rods 208 and guiding the movement of the limiting blocks 209. Locking grooves 210 are formed on the outer surface of each limiting block 209. The locking grooves 210 are matched with the locking blocks 204. Multiple slots are formed on the bottom surface of the fixed seat 201. The slots are matched with the locking blocks 204, enabling the locking blocks 204 to enter the inside of the fixed seat 201 through the slots and clamping and fixing the locking blocks 204 by using the locking grooves 210. Rotating seats 211 are fixedly connected to the top surfaces of the four limiting blocks 209 and the outer surface of the locking nut 207. Connecting rods 212 are rotatably connected between adjacent two rotating seats 211. One end of the connecting rod 212 is rotatably connected to the locking nut 207 through the rotating seat 211, and the other end of the connecting rod 212 is rotatably connected to the limiting block 209 through the rotating seat 211, enabling the locking nut 207 to drive the limiting block 209 to move through the connecting rod 212 and the rotating seat 211.

[0027] Please refer to Figure 1 and Figure 4 As shown in, the floating mechanism 6 includes a floating cylinder 601. A pull ring 602 is fixedly connected to the floating cylinder 601. The floating cylinder 601 is fixedly installed on the top protective layer 4, enabling the floating cylinder 601 to float on the water surface, facilitating the use of a boat to pull it to a designated position. A threaded interface 603 is provided at the end of the floating cylinder 601. A sealing cover 604 is provided outside the threaded interface 603. A sealing ring 605 is provided inside the sealing cover 604. The sealing cover 604 can be opened to allow water to enter the floating cylinder 601, facilitating the sinking arrangement. The floating cylinder 601 can be sealed by tightening the sealing cover 604 and the sealing ring 605 on the threaded interface 603, enabling the whole to float on the water surface and facilitating the boat to pull it to the sinking arrangement construction position.

[0028] During operation, the four limiting rods 203 on the connecting base 202 pass through the mesh cross of the bottom protective layer 1 and the top protective layer 4, and the locking block 204 is inserted into the fixed base 201. Then, rotate the rotating head 205. The rotation of the rotating head 205 drives the locking screw 206 to rotate. The rotation of the locking screw 206 drives the locking nut 207 to move. The movement of the locking nut 207 drives the connecting rod 212 to rotate. The rotation of the connecting rod 212 drives the limiting block 209 to move along the guide rod 208. The limiting block 209 fixes the locking block 204 through the locking slot 210, firmly fixing the bottom protective layer 1, the auxiliary material layer 3 and the top protective layer 4 together. The bottom protective layer 1, the auxiliary material layer 3, the top protective layer 4 and the reverse filter screen 5 can achieve a good reverse filtering effect, improve the anti-scouring ability, and facilitate the construction of the mattress.

[0029] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A river embankment anti-scour structure, characterized in that: The invention comprises a bottom protective layer (1) and a top protective layer (4), an auxiliary material layer (3) is provided between the bottom protective layer (1) and the top protective layer (4), a plurality of connection and locking mechanisms (2) are provided between the bottom protective layer (1), the auxiliary material layer (3) and the top protective layer (4), a reverse filter (5) is fixedly connected to the bottom protective layer (1), and floating mechanisms (6) are provided on both sides of the top protective layer (4); The connection locking mechanism (2) comprises a fixed seat (201) and a connection seat (202); four limit rods (203) are fixedly connected to the top of the connection seat (202); the tops of the four limit rods (203) are fixedly connected to locking blocks (204); a rotating head (205) is rotatably connected to the fixed seat (201); a locking screw (206) is fixedly connected to the bottom of the rotating head (205); and a locking nut (207) is threadedly connected to the locking screw (206). The fixed seat (201) is internally fixedly connected with four pairs of guide rods (208), each pair of the guide rods (208) is slidably connected with a limit block (209), the outer surface of each limit block (209) is provided with a locking groove (210), the top surfaces of the four limit blocks (209) and the outer surface of the locking nut (207) are fixedly connected with a rotating seat (211), and a connecting rod (212) is rotatably connected between two adjacent rotating seats (211).

2. A river embankment anti-scour structure according to claim 1, characterized in that: The bottom protective layer (1) and the top protective layer (4) are both provided with a mesh structure, and a plurality of the connection locking mechanisms (2) are provided at the mesh cross intersections of the bottom protective layer (1) and the top protective layer (4).

3. The anti-scour structure for river dam according to claim 1, characterized in that: The locking screw (206) is rotatably connected to the inner wall of the fixing seat (201), and the top end of the locking screw (206) passes through the fixing seat (201) and is connected to the external rotating head (205).

4. The anti-scour structure for river dam according to claim 1, characterized in that: The shapes of the plurality of limit blocks (209) are all arranged to be fan-shaped, and the limit blocks (209) and the guide rod (208) are arranged to penetrate each other.

5. The anti-scour structure for river dam according to claim 1, characterized in that: The locking slot (210) matches the locking block (204); a plurality of slots are provided on the bottom surface of the fixing seat (201); and the slots match the locking block (204).

6. The anti-scour structure for river dam according to claim 1, characterized in that: One end of the connecting rod (212) is rotatably connected to the locking nut (207) via a rotating seat (211), and the other end of the connecting rod (212) is rotatably connected to the limiting clamping block (209) via the rotating seat (211).

7. The anti-scour structure for river dam according to claim 1, characterized in that: The floating mechanism (6) comprises a floating cylinder (601), a pull ring (602) is fixedly connected to the floating cylinder (601), and the floating cylinder (601) is fixedly mounted on the top protective layer (4).

8. The anti-scour structure for river dam according to claim 7, characterized in that: A threaded interface (603) is provided at the end of the floating cylinder (601), a sealing cover (604) is provided on the outside of the threaded interface (603), and a sealing ring (605) is provided inside the sealing cover (604).

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