A new type of riprap bank protection structure combining anti-scouring and anti-filtration

Abstract

The utility model relates to the field of river bank protection, specifically a new type of riprap bank protection structure combining anti-scouring and anti-filtration, which is placed in a caisson and comprises a support, an anti-filter layer and an anti-scouring component. The support is laid on the bottom of the caisson and has certain flexibility. The anti-filter layer is placed in the caisson to form a placement cavity with an opening upward, which is located on the upper side of the support. The bottom of the anti-filter layer is fixedly connected to the support. The anti-scouring component is placed in the placement cavity of the anti-filter layer and comprises thrown stones. The thrown stones in the anti-scouring component in contact with the riverbed surface are placed inside a placement cage. The placement cage is fixedly connected to the corresponding anti-filter layer. The utility model can be thrown on the riverbed to perform anti-scouring and anti-filtration protection on the riverbed surface.

Description

Technical Field

[0001] The utility model relates to the field of river bank protection, in particular to a new type of riprap bank protection structure combining anti-scouring and anti-filtration. Background Art

[0002] There are many shoals formed by siltation on both sides of my country's rivers, which have poor anti-erosion performance. These shoals and embankments are in danger of bank collapse, posing a serious threat to river bank embankment projects, industrial and agricultural production on both sides of the river, and people's lives and property.

[0003] At present, there are many methods and forms for bank collapse control. The most commonly used one is riprap revetment structure, which includes scattered riprap, gabion cage riprap, caisson underwater riprap, etc. Although riprap can meet the quality requirements of "accurate, sufficient and uniform" smooth riprap revetment to the greatest extent, it still cannot avoid the slippage of the revetment project due to the existence of spaces between stones and the sand swept away by the bottom current vortex. Utility Model Content

[0004] The utility model aims to provide a novel riprap revetment structure combining anti-scouring and anti-filtration, which is used to solve the problem that the existing riprap revetment structure cannot avoid the existence of spaces between stones, causing the bottom flow vortex to sweep away sand and cause the revetment engineering to slip.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a new type of riprap revetment structure combining anti-scouring and anti-filtration, which is placed in a caisson and includes:

[0006] The support is laid on the bottom of the caisson and has a certain flexibility;

[0007] The filter layer is placed in the caisson to form a placement cavity with an opening facing upward, which is located on the upper side of the support member, and the bottom of the filter layer is fixedly connected to the support member;

[0008] The anti-scouring component is placed in the placement cavity of the filter layer and includes thrown stones. The thrown stones in the anti-scouring component that contact the riverbed surface are placed inside the placement cage, and the placement cage is fixedly connected to the corresponding filter layer.

[0009] As a further solution of the utility model, the support member is a supporting bamboo raft.

[0010] As a further solution of the utility model, the material of the filter layer is non-woven geotextile, and the bottom of the filter layer is fixedly connected to the support member by a fixed iron wire.

[0011] As a further solution of the utility model, the filter layer forms a rectangular placement cavity opening upward.

[0012] As a further solution of the utility model, the outer side and the bottom of the mesh cage are fixedly connected to the filter layer by means of fixed iron wires.

[0013] Compared with the prior art, the utility model can be arranged into structures with gabion nets and without gabion nets. The riprap revetment structure with gabion nets is sunk first, and then the revetment structure without gabion nets is sunk in the middle of the riprap revetment structure with gabion nets. The scattered riprap can effectively fill the gaps between the stone throwing bodies. On the premise of reducing the amount of stone blocks, the overall anti-impact and sand retention capabilities of the revetment project are improved, and the problem that the existing riprap revetment structure cannot avoid the existence of spaces between the stones, causing the bottom flow vortex to sweep away the sand and cause the revetment project to slip is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a new type of riprap bank protection structure combining anti-scouring and anti-filtration in the present invention.

[0015] Figure 2 The utility model is a schematic diagram of the placement of a new type of riprap revetment structure that combines anti-scouring and anti-filtration in the utility model.

[0016] In the attached figure: 1. Riverbed surface; 2. Filter layer; 3. Support bamboo raft; 4. Placement of mesh cage; 5. Throwing stones; 6. Iron wire; 7. Caisson. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0018] like Figure 1 and Figure 2 As shown, in an embodiment of the utility model, a new type of riprap bank protection structure combining anti-scouring and anti-filtration is placed in a caisson 7, including a support member laid on the bottom of the caisson 7, which has a certain flexibility; an anti-filter layer 2 is placed in the caisson 7 to form a placement cavity opening upward, which is located on the upper side of the support member, and the bottom of the anti-filter layer 2 is fixedly connected to the support member; an anti-scouring component is placed in the placement cavity of the anti-filter layer 2, including a thrown stone 5, and the thrown stone 5 in the anti-scouring component in contact with the riverbed surface 1 is placed inside the placement cage 4, and the placement cage 4 is fixedly connected to the corresponding anti-filter layer 2. The anti-scouring component is used to stabilize the riverbed surface 1, slow down the scouring and erosion of the riverbed surface 1 by water flow, and prevent the riverbed surface 1 from silting up and silting up.

[0019] Specifically, in the present invention, the caisson 7 is installed in the riprap cabin of the ship body, and the height of a single caisson 7 is the same as that of the riprap cabin. An opening and closing bottom plate is arranged at the bottom of the caisson 7. When closed, it is used to carry the new riprap revetment structure of the present invention, and when opened, it is used to cast the new riprap revetment structure. Each group of caissons 7 can carry multiple riprap revetment structures, and during actual construction, they are lowered and cast in a certain order.

[0020] Furthermore, the supporting member is a supporting bamboo raft 3, which is laid on the filter layer 2. A plurality of supporting bamboo rafts 3 can be arranged in the caisson 7. The supporting bamboo raft 3 and the filter layer 2 at the bottom are bound together by iron wires 6. When the bottom of the caisson 7 is opened and thrown, the filter layer 2 can be protected from wear and damage when the thrown stones 5 are packed. At the same time, the flexibility and self-strength of the supporting bamboo raft 3 are used to ensure close contact between the filter layer 2 and the riverbed surface 1, so as to adapt to the undulating terrain of the riverbed surface 1.

[0021] Furthermore, the material of the filter layer 2 is non-woven geotextile, and the bottom of the filter layer 2 is fixedly connected to the supporting bamboo raft 3 by a fixed iron wire 6. The specification of the non-woven geotextile is 350g / ㎡. Multiple pieces of non-woven geotextiles can be arranged in each caisson 7 and laid at the bottom of the caisson 7, at the bottom of the projectile body, to prevent water from eroding the soil of the riverbed, thereby playing a role of water permeability and anti-filtration.

[0022] like Figure 1 As shown, in the embodiment of the utility model, the inverted filter layer 2 forms a rectangular placement cavity with an opening upward, and the outer side and the bottom of the placement cage 4 are fixedly connected to the inverted filter layer 2 by fixed wires 6, wherein the placement cage 4 is a gabion net, and the bottom of the placement cage 4 is tied together with the inverted filter layer 2 and the supporting bamboo raft 3 by fixed wires 6, so that the thrown stone 5 is partially formed, and the top is provided with a gabion net cover, and is tied together with the lower gabion net with wires 6 to prevent the thrown stone 5 from scattering during the throwing process.

[0023] When the utility model is assembled and thrown:

[0024] S1: Before throwing, a certain number of non-woven geotextiles, gabions and gabion covers are cut according to the size of the caisson 7, and a corresponding number of supporting bamboo rafts 3 are arranged, and a riprap boat for transporting the anti-collision components is arranged;

[0025] S2: Drive the riprap boat to the designated dumping area and accurately locate the riprap boat to the dumping location through GNSS and other positioning instruments;

[0026] S3: In the caisson 7, the filter layer 2, the supporting bamboo raft 3 and the gabion net are laid in sequence from bottom to top, and the bottom is tied with wire 6 to form a whole. After laying, the throwing block stone 5 is piled in the gabion net. When the throwing block stone 5 is piled at the same height as the caisson 7, the gabion net cover is covered, and the gabion net cover is tied to the lower gabion net with wire 6 to prevent the anti-collision component from scattering during the sinking process;

[0027] S4: Use the sinking mechanism on the riprap boat to lower the caisson 7 to a height of 2m above the riverbed surface 1, open the bottom plate at the bottom of the caisson 7, and the new riprap revetment structure will perform free fall motion under the action of gravity until it falls on the riverbed surface 1, completing one throw, then close the bottom door of the caisson 7, lift the caisson 7 to the water surface, and carry out the next operation, and repeat this cycle until the throw is completed;

[0028] S5: After a layer of riprap with gabion net is thrown in the throwing area, the filter layer 2 and the supporting bamboo raft 3 are laid in the caisson 7 in order from bottom to top, and the bottom is tied with wire 6. The gabion net and the gabion net cover are not laid this time, so that the block stone throwing body is in a scattered state. According to step S4, the scattered riprap without gabion net is thrown onto the throwing body with gabion net. With the rolling of the scattered riprap, the space between the riprap with gabion net 4 can be effectively filled. During construction, the caisson 7 is lowered in order according to the planned order, and this cycle is repeated until the filling work of the throwing area is completed;

[0029] In summary, the utility model can be set up as a structure with a gabion net and a structure without a gabion net. The riprap revetment structure with the gabion net is first sunk, and then the revetment structure without the gabion net is sunk in the middle of the riprap revetment structure with the gabion net. The scattered riprap can effectively fill the gaps between the stone throwing bodies. On the premise of reducing the amount of stone, the overall anti-impact and sand retention capabilities of the revetment project are improved, and the problem that the existing riprap revetment structure cannot avoid the existence of spaces between the stones, causing the bottom flow vortex to sweep away the sand and cause the revetment project to slip is effectively solved.

[0030] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A new type of riprap revetment structure combining anti-scouring and anti-filtration, which is placed in a caisson and is characterized by: include: The support is laid on the bottom of the caisson and has a certain flexibility; The filter layer is placed in the caisson to form a placement cavity with an opening facing upward, which is located on the upper side of the support member, and the bottom of the filter layer is fixedly connected to the support member; The anti-scouring component is placed in the placement cavity of the filter layer and includes thrown stones. The thrown stones in the anti-scouring component that contact the riverbed surface are placed inside the placement cage, and the placement cage is fixedly connected to the corresponding filter layer.

2. According to claim 1, a new type of riprap bank protection structure combining anti-scouring and anti-filtration is characterized in that: The supporting member is a supporting bamboo raft.

3. The novel riprap bank protection structure combining anti-scouring and anti-filtration according to claim 1 is characterized in that: The material of the filter layer is non-woven geotextile, and the bottom of the filter layer is fixedly connected to the support member by a fixed iron wire.

4. The novel riprap bank protection structure combining anti-scouring and anti-filtration according to claim 1 is characterized in that: The filter layer forms a rectangular placement cavity opening upward.

5. The novel riprap bank protection structure combining anti-scouring and anti-filtration according to claim 1 is characterized in that: The outer side and the bottom of the mesh cage are fixedly connected to the filter layer through fixed iron wires.

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