Earth and rockfill dam seepage deformation dangerous case processing device
By designing the combination of prefabricated cofferdam structure and multi-layer material layers, the problems of poor effect and poor stability of traditional seepage hazard treatment in large-scale earth and rock dams are solved, and rapid assembly and efficient risk control are achieved, ensuring that The stability of soil and the filtration effect of silt and sand.
Patent Information
- Application Number
- CN202420505580.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-15
AI Technical Summary
The traditional seepage risk treatment method is not effective in large-scale earth and rock dams, and woven bags or burlap bags are prone to corrosion and have poor stability, making it difficult to effectively control soil collapse and silt loss.
A prefabricated cofferdam structure consisting of fixed columns, slots, enclosures, springs and material layers is designed. Through the movable rods and springs, it combines the gravel layer, sand cushion layer, geotextile layer and gravel layer to form the reverse The filter layer reduces the flow rate of water inrush and filters silt and sand to achieve rapid assembly and stable risk control.
It realizes rapid assembly on site without large-scale machinery construction, improves construction efficiency, effectively reduces the flow rate of water inrush and silt loss, stabilizes the soil structure, and quickly controls the danger of pipe inrush.
Smart Images
Figure CN222295033U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water conservancy projects, in particular to a device for processing dangerous seepage deformation of earth-rock dams. Background Art
[0002] Under the action of seepage, the fine particles in the soil are carried away by groundwater from the gaps between the coarse particles, resulting in the formation of a continuous seepage channel in the soil, causing the soil to collapse. Piping damage generally has a development process and is a progressive damage. Piping generally occurs in non-cohesive soils of a certain grade. The location of the occurrence can be at the overflow of seepage or inside the soil, so it is also called a kind of seepage erosion phenomenon.
[0003] The traditional way to deal with seepage hazards is to use woven bags or sacks filled with soil to quickly build a well at the pipe burst mouth, and simultaneously fill the well with filter material to prevent the gushing water from carrying sand to prevent the hazard from further expanding. This method is only suitable for smaller pipe bursts, and the well is easily destroyed after the woven bags or sacks are corroded, and the stability is poor. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a device for handling dangerous seepage deformation of earth-rock dams to solve the problems mentioned in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for handling seepage deformation hazards of earth-rock dams, comprising a plurality of fixed columns, slots are provided on the front and rear outer surfaces of the plurality of fixed columns, a first enclosure is provided between the front and rear fixed columns, and a second enclosure is provided on the opposite outer surfaces of the fixed columns at the edges on the left and right sides, springs are fixedly connected to the inner surfaces of the left and right sides of the fixed columns, a connecting seat is fixedly connected to the outer surface of the connecting seat, a rotating shaft is rotatably connected to the outer surface of the rotating shaft, and a round roller is fixedly sleeved on the outer surface of the rotating shaft.
[0006] Preferably, the plurality of fixed columns and the plurality of first enclosures and second enclosures constitute a cofferdam, and the interior of the cofferdam is filled with a gravel layer, a sand cushion layer, a geotextile layer, and a crushed stone layer.
[0007] Preferably, movable rods are movably inserted into the outer surfaces of both left and right sides of the fixed column, the spring is sleeved on the outer surface of the movable rod, and the other end of the movable rod is fixedly connected to the connecting seat.
[0008] By adopting the above technical solution, the spring is limited by the movable rod to prevent the spring from tilting and deforming.
[0009] Preferably, the outer surface of the first enclosure is fixedly connected to a drainage pipe, and the drainage pipe is arranged above the gravel layer.
[0010] By adopting the above technical solution, the water in the cofferdam is drained to the ground through the drainage pipe, thereby reducing the scouring of the soil on the ground by the water flowing out from the upper part of the cofferdam.
[0011] Preferably, the gravel layer, sand cushion layer, geotextile layer and crushed stone layer are arranged in sequence from bottom to top, the thickness of the gravel layer is 30-40m, the thickness of the sand cushion layer is 5-10cm, and the thickness of the crushed stone layer is 20-30cm.
[0012] By adopting the above technical scheme, the above material layer can fill the pipe burst mouth and reduce the water flow velocity of the pipe burst mouth, and the geotextile layer can filter out the sediment in the pipe burst water, which can basically prevent the loss of sediment and thus stabilize the dangerous situation.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The seepage deformation hazard handling device of the earth-rock dam, by setting multiple fixed columns and opening slots, cooperates with movable rods, springs and round sticks to limit the first and second enclosures, so as to achieve the effect of adopting an assembled cofferdam structure, which can be quickly assembled on site manually, does not require large machinery during operation, is convenient for construction, and improves construction efficiency at the same time, thereby ensuring that the pipe burst hazard can be quickly controlled.
[0015] 2. The earth-rock dam seepage deformation hazard treatment device, through the gravel layer, sand cushion layer, geotextile layer and crushed stone layer to form an anti-filtration layer, can effectively reduce the flow rate of gushing water, stop the loss of foundation sediment, and stabilize the dangerous situation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the front planar cross-sectional structure of the utility model;
[0018] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.
[0019] In the figure: 1. fixed column; 2. slot; 3. movable rod; 4. spring; 5. connecting seat; 6. rotating shaft; 7. round roller; 8. first enclosure; 9. second enclosure; 10. gravel layer; 11. sand cushion layer; 12. geotextile layer; 13. crushed stone layer; 14. drainage pipe. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] Embodiment 1:
[0022] Please refer to Figure 1-3 A device for handling dangerous seepage deformation of earth-rock dams comprises a plurality of fixed columns 1. During construction, the fixed columns 1 are first driven into the soil body outside the pipe burst mouth according to a set spacing. Slots 2 are provided on the outer surfaces of the front and rear sides of the plurality of fixed columns 1. A first enclosure 8 is provided between the fixed columns 1 on the front and rear sides. Second enclosures 9 are provided on the outer surfaces of the fixed columns 1 on the left and right sides at the edges. Each of the first enclosure 8 and the second enclosure 9 is inserted into the slot 2 in the fixed column 1. The inner surfaces of the left and right sides of the fixed column 1 are fixedly connected with springs 4. The outer surfaces of the springs 4 are fixedly connected with A connecting seat 5 is connected, and the outer surface of the connecting seat 5 is rotatably connected to a rotating shaft 6. The outer surface of the rotating shaft 6 is fixedly sleeved with a round roller 7. When the first enclosure 8 and the second enclosure 9 are inserted, when the first enclosure 8 and the second enclosure 9 come into contact with the round roller 7, the round roller 7 is squeezed toward both sides, and the connecting seat 5 squeezes the movable rod 3 toward both sides, so that the spring 4 is compressed. The squeezing force of the spring 4 drives the round stick to limit the first enclosure 8 and the second enclosure 9, and the lower ends of the first enclosure 8 and the second enclosure 9 are inserted into the soil layer to prevent water seepage between the lower ends of the first enclosure 8 and the second enclosure 9 and the soil layer.
[0023] Working principle: When the utility model is in use, during construction, the fixed column 1 is first driven into the soil outside the pipe burst mouth according to the set spacing, and then each first enclosure 8 and second enclosure 9 is inserted into the slot 2 in the fixed column 1. When the first enclosure 8 and the second enclosure 9 are inserted, when the first enclosure 8 and the second enclosure 9 are in contact with the round roller 7, the round roller 7 is squeezed to both sides, and the connecting seat 5 squeezes the movable rod 3 to both sides, so that the spring 4 is compressed. The squeezing force of the spring 4 drives the round stick to limit the first enclosure 8 and the second enclosure 9, and the lower ends of the first enclosure 8 and the second enclosure 9 are inserted into the soil layer to prevent water seepage between the lower ends of the first enclosure 8 and the second enclosure 9 and the soil layer.
[0024] Compared with the related art, the earth-rock dam seepage deformation hazard handling device provided by the utility model has the following beneficial effects: it adopts an assembled cofferdam structure, can be quickly assembled manually on site, does not require large machinery during operation, and is convenient for construction. At the same time, it improves the construction efficiency, thereby ensuring that the pipe burst hazard can be quickly controlled.
[0025] Embodiment 2:
[0026] Please refer to Figure 1-3 A plurality of fixed columns 1 and a plurality of first enclosure plates 8 and a second enclosure plate 9 constitute a cofferdam, the interior of the cofferdam is filled with a gravel layer 10, a sand cushion layer 11, a geotextile layer 12, and a crushed stone layer 13, the gravel layer 10, the sand cushion layer 11, the geotextile layer 12, and the crushed stone layer 13 are arranged sequentially from bottom to top, the thickness of the gravel layer 10 is 30-40m, the thickness of the sand cushion layer 11 is 5-10cm, and the thickness of the crushed stone layer 13 is 20-30cm. After the cofferdam construction is completed, the gravel layer 10, the sand cushion layer 11, the geotextile layer 12, and the crushed stone layer 13 are filled in layers inside the cofferdam to complete the treatment of the pipe burst hazard.
[0027] The above-mentioned equipment is used in different ways for each device. It is selected and used according to actual conditions, and various parameters are referred to, in accordance with the functions of the equipment used and the effects achieved.
[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for handling seepage deformation hazards of earth-rock dams, comprising a plurality of fixed columns (1), characterized in that: The front and rear outer surfaces of the plurality of fixed columns (1) are provided with slots (2), a first enclosure (8) is provided between the front and rear outer surfaces of the fixed columns (1), and second enclosures (9) are provided on the outer surfaces of the fixed columns (1) opposite to each other at the edges on the left and right sides. The left and right inner surfaces of the fixed columns (1) are fixedly connected with springs (4), the outer surfaces of the springs (4) are fixedly connected with a connecting seat (5), the outer surface of the connecting seat (5) is rotatably connected with a rotating shaft (6), and the outer surface of the rotating shaft (6) is fixedly sleeved with a round roller (7).
2. The device for handling dangerous seepage deformation of earth-rock dam according to claim 1, characterized in that: The plurality of fixed columns (1) and the plurality of first enclosure plates (8) and second enclosure plates (9) form a cofferdam, and the interior of the cofferdam is filled with a gravel layer (10), a sand cushion layer (11), a geotextile layer (12), and a crushed stone layer (13).
3. The device for handling dangerous seepage deformation of earth-rock dam according to claim 1, characterized in that: A movable rod (3) is movably inserted into the outer surfaces of both left and right sides of the fixed column (1), the spring (4) is sleeved on the outer surface of the movable rod (3), and the other end of the movable rod (3) is fixedly connected to the connecting seat (5).
4. The device for handling dangerous seepage deformation of earth-rock dam according to claim 2, characterized in that: The outer surface of the first enclosure plate (8) is fixedly connected to a drainage pipe (14), and the drainage pipe (14) is arranged above the gravel layer (13).
5. The device for handling dangerous seepage deformation of earth-rock dam according to claim 2, characterized in that: The gravel layer (10), the sand cushion layer (11), the geotextile layer (12) and the crushed stone layer (13) are arranged in sequence from bottom to top. The thickness of the gravel layer (10) is 30-40 m, the thickness of the sand cushion layer (11) is 5-10 cm, and the thickness of the crushed stone layer (13) is 20-30 cm.