Multi-stage blocking net connecting device for barrier dam

Abstract

The utility model discloses a multistage blocking net connecting device for a barrage dam, which belongs to the technical field of debris flow barrage dam protection equipment and comprises a dam slope, blocking nets are laid on the surface of the dam slope, and a plurality of blocking nets are arranged on the downstream of the dam slope at intervals. The blocking nets are connected to bank slopes on the two sides of a debris flow weir dam through anchor cables on the two sides, the bottoms of the portions, located on the downstream of the dam slopes, of the lower portions of the blocking nets are connected with supporting frames pre-buried in a soil layer, and parallel connecting devices are arranged on the two sides between every two adjacent blocking nets in the blocking nets. The connecting device comprises a connecting plate and auxiliary pressing plates on the two sides, and an extension plate is outwards arranged in the center of the connecting plate. According to the multi-stage blocking net connecting device, the stability and reliability of connection of the multi-stage blocking nets can be improved, the connecting strength between the adjacent blocking nets is improved, the situation that a certain stage of blocking net falls off after long-term use is reduced on the whole, and the downstream area is protected.

Description

Technical Field

[0001] This utility model relates to the technical field of debris flow dam protection equipment, and more specifically, to a multi-stage barrier net connection device for dams. Background Technology

[0002] Extreme weather events such as heavy rainfall and strong snowmelt, as well as high-intensity earthquakes, can easily trigger large-scale debris flows in the basins of major rivers in high mountain and canyon areas. When debris flows enter the main river, they can quickly block the river channel, forming a barrier dam of considerable height. As the water level upstream of the barrier dam continues to rise, a barrier lake with high risk can form. Once the barrier lake breaches, it will create a powerful and destructive flood, causing severe damage downstream.

[0003] In existing protective equipment, a multi-level barrier net structure is generally used to protect landslide dams. Specifically, the first barrier net is usually set on the downstream slope of the debris flow landslide dam, and the remaining multiple levels of barrier nets are generally laid at intervals downstream of the first barrier net. For the above-mentioned multi-level barrier nets, anchor cables are used to connect and fix them on both sides. After long-term use, it is easy for a certain level of barrier net to fall off, resulting in support failure and affecting the safety of the downstream. Moreover, the adjacent barrier nets are all independent structures, which are not safe enough. Therefore, it is necessary to design a connection device specifically for multi-level barrier nets. Utility Model Content

[0004] The purpose of this invention is to provide a multi-level barrier net connection device for landslide dams. This device can improve the stability and reliability of the multi-level barrier net connection, increase the connection strength between adjacent barrier nets, and reduce the occurrence of barrier nets falling off after long-term use, thus protecting the downstream area.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A multi-stage retaining net connection device for a landslide dam includes a dam slope, the surface of which is covered with retaining nets. Several retaining nets are spaced apart downstream of the dam slope. Each retaining net is connected to the bank slopes on both sides of the debris flow dam via anchor cables. The bottom of each retaining net downstream of the dam slope is connected to a support frame embedded in the soil layer. Parallel connecting devices are provided on both sides between adjacent retaining nets. Each connecting device includes a connecting plate and auxiliary pressure plates on both sides. An extension plate extends outward from the center of the connecting plate. The extension plate is fixed to the bank slope by ground bolts, and a hanging ring is provided above the ground bolts. Two pull rings are fitted inside the hanging rings. The two pull rings are connected to corresponding pull rings on the anchor cables on both sides via steel wire ropes, which pull the retaining nets on both sides downwards.

[0007] As a further optimization of this solution, both ends of the connecting plate are machined with concave connecting grooves. An auxiliary pressure plate is connected inside the concave connecting grooves through a rotating shaft. Threaded holes are opened at corresponding positions at both ends of the connecting plate and the auxiliary pressure plate. A straight limiting plate and a curved limiting plate are installed inside the threaded holes through bolts. The straight limiting plate is used to limit the auxiliary pressure plate pressing on the support frame, and the curved limiting plate is used to limit the retaining net pressing on the dam slope surface.

[0008] As a further optimization of this solution, adjacent auxiliary pressure plates are connected by bolts to a concave positioning plate, and the center of the concave positioning plate is fixedly connected to the bank slope by a ground bolt.

[0009] As a further optimization of this solution, the curved limiting plate is set at the positions on both sides below the dam slope.

[0010] As a further optimization of this solution, the concave positioning plate has a through groove on its inner side, and auxiliary pressure plates on both sides are embedded inside the through groove.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0012] This invention utilizes a connecting device consisting of a connecting plate and auxiliary pressure plates on both sides, combined with components such as straight and curved limiting plates, to achieve a stable connection of multi-level retaining nets used for landslide dams. On one hand, the auxiliary pressure plates press the retaining nets located on the dam slope and the support frame embedded in the soil layer respectively. On the other hand, additionally designed steel wire ropes are connected to the corresponding pull rings of the anchor cables on both sides, pulling down the retaining nets on both sides. This improves the stability and reliability of the multi-level retaining net connection, increases the connection strength between adjacent retaining nets, and reduces the possibility of a certain level of retaining net falling off after long-term use, thus protecting the downstream area. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation structure of the connecting device of this utility model;

[0014] Figure 2 This is a schematic diagram of the auxiliary pressure plate connection structure below the dam slope of this utility model;

[0015] Figure 3 This is a schematic diagram of the auxiliary pressure plate connection structure above the support frame of this utility model;

[0016] Figure 4 This is a schematic diagram of the connection structure of the linear limiting plate of this utility model;

[0017] Figure 5 This is a schematic diagram of the curved limiting plate connection structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the extension plate connection structure of this utility model;

[0019] In the diagram: 1. Dam slope; 2. Barrier net; 3. Anchor cable; 4. Support frame; 5. Connecting plate; 6. Auxiliary pressure plate; 7. Extension plate; 8. Threaded hole; 9. Wire rope; 10. Pull ring; 11. Concave positioning plate; 12. Ground bolt; 13. Concave connecting groove; 14. Straight limiting plate; 15. Curved limiting plate; 16. Hook. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0021] To address the issues that existing retaining nets are fixed by anchor cables on both sides, which can easily lead to the detachment of a certain level of the retaining net after long-term use, resulting in support failure and affecting downstream safety, and that adjacent retaining nets are independent structures with insufficient safety.

[0022] like Figure 1 As shown, this application includes a dam slope 1, the surface of which is covered with a retaining net 2, and several retaining nets 2 are spaced apart downstream of the dam slope 1. The retaining nets 2 are all connected to the bank slopes on both sides of the debris flow dam by anchor cables 3 on both sides. The bottom of the retaining nets 2 located downstream of the dam slope 1 is connected to a support frame 4 pre-embedded in the soil layer. Parallel connecting devices are provided on both sides between adjacent retaining nets 2.

[0023] like Figure 2 As shown, the connecting device includes a connecting plate 5 and auxiliary pressure plates 6 on both sides, and an extension plate 7 is provided outward from the center of the connecting plate 5;

[0024] like Figure 6 As shown, the extension plate 7 is fixedly connected to the bank slope by the ground bolt 12 and a hanging ring 16 is provided above the ground bolt 12. Two pull rings 10 are installed inside the hanging ring 16. The two pull rings 10 are connected to the corresponding pull rings 10 of the anchor cables 3 on both sides by steel wire ropes 9 and pull down the barrier nets 2 on both sides.

[0025] like Figure 4 As shown, both ends of the connecting plate 5 are machined with concave connecting grooves 13. An auxiliary pressure plate 6 is connected inside the concave connecting groove 13 via a rotating shaft. Threaded holes 8 are opened at corresponding positions at both ends of the connecting plate 5 and the auxiliary pressure plate 6. A straight limiting plate 14 and a curved limiting plate 15 are installed inside the threaded holes via bolts. The straight limiting plate 14 is used to limit the auxiliary pressure plate 6 pressing on the support frame 4.

[0026] like Figure 5 As shown, the curved limiting plate 15 is used to limit the barrier net 2 that is pressed against the surface of the dam slope 1;

[0027] like Figure 3 As shown, adjacent auxiliary pressure plates 6 are connected by bolts to concave positioning plates 11. The center of the concave positioning plate 11 is fixedly connected to the bank slope by ground bolts 12. The inner side of the concave positioning plate 11 is provided with a through groove and the auxiliary pressure plates 6 on both sides are embedded in the through groove.

[0028] Specifically, according to Figure 1 Without the layout diagram, the connecting device of this application is set between the barrier nets 2. The extension plate 7 and the concave positioning plate 11 are both fixedly connected to the bank slope by the ground bolts 12. Then, the straight limiting plate 14 and the curved limiting plate 15 are installed at the positions shown in the diagram. The straight limiting plate 14 is used to limit the auxiliary pressure plate 6 pressing on the support frame 4. The curved limiting plate 15 is used to limit the barrier net 2 pressing on the surface of the dam slope 1. On the one hand, the auxiliary pressure plate 6 presses the barrier net 2 located on the dam slope 1 and the support frame 4 embedded in the soil layer respectively. On the other hand, the additionally designed steel wire rope 9 is connected to the corresponding pull ring 10 of the anchor cable 3 on both sides to pull down the barrier net 2 on both sides. This can improve the stability and reliability of the connection of the multi-level barrier net 2, improve the connection strength between adjacent barrier nets 2, and reduce the possibility of a certain level of barrier net 2 falling off after long-term use, thus protecting the downstream area.

[0029] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0030] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage retaining net connection device for a landslide dam, comprising a dam slope, wherein a retaining net is laid on the surface of the dam slope, and a plurality of retaining nets are spaced apart downstream of the dam slope, wherein the retaining nets are all connected to the bank slopes on both sides of the debris flow landslide dam by anchor cables on both sides, wherein the bottom of each retaining net located downstream of the dam slope is connected to a support frame pre-embedded in the soil layer, characterized in that: The connecting device is provided with a connecting plate and two auxiliary pressing plates, the center of the connecting plate is outwardly provided with an extension plate, the extension plate is fixedly connected to the bank slope through ground bolts, a hanging ring is arranged above the ground bolts, two pull rings are sleeved in the hanging ring, the two pull rings are respectively connected to corresponding pull rings of two anchor cables through steel wires and pull down the two side retaining nets.

2. A multi-stage barrier net connection device for a dammed barrier according to claim 1, characterized in that: The two ends of the connecting plate are provided with recessed connecting grooves, the recessed connecting grooves are internally connected with auxiliary pressing plates through rotating shafts, the two ends of the connecting plate and the two ends of the auxiliary pressing plates are provided with corresponding threaded holes, the threaded holes are internally installed with straight limiting plates and curved limiting plates through bolts, the straight limiting plates are used for limiting the auxiliary pressing plates pressed on the supporting frame, and the curved limiting plates are used for limiting the retaining nets pressed on the surface of the dam slope.

3. A multi-stage barrier net connection device for a dammed barrier according to claim 2, characterized in that: The recessed positioning plates are connected between the adjacent auxiliary pressing plates in the auxiliary pressing plates through bolts.

4. A multi-stage barrier net connection device for a dammed barrier according to claim 3, characterized in that: The curved limiting plates are arranged at two side positions below the dam slope.

5. A multi-stage barrier net connection device for a dammed barrier according to claim 4, characterized in that: The recessed positioning plates are internally provided with through grooves, and the two side auxiliary pressing plates are embedded in the through grooves.

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