A weir core closed soil air-proof whole-pipe-bag anti-seepage cofferdam structure

Abstract

The utility model relates to the cofferdam structure technical field, and disclose a kind of cofferdam structure of cofferdam core closed gas earth full pipe bag anti-seepage, including base layer, first angle support steel sheet and second angle support steel sheet, the inner side surface of the lower end outer surface of first angle support steel sheet is fixed into the base layer, the inner side surface of the lower end outer surface of second angle support steel sheet is fixed into the base layer, the inner side of first angle support steel sheet and second angle support steel sheet is provided with first geotextile tube bag, the upper surface of the side of base layer is stacked with second geotextile tube bag, the upper surface of the other side of base layer is stacked with third geotextile tube bag, the outside of second geotextile tube bag and third geotextile tube bag is surrounded by support barrier net, by the structure of three layers geotextile tube bag clamping angle support steel sheet, it improves anti-seepage simultaneously, and improve impact resistance, again by being braced in geotextile tube bag around support barrier net, when high pressure impact of water flow, the scattering of geotextile tube bag can be avoided, and support performance is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cofferdam structure with closed air-sealed soil core and full-pipe bag for seepage prevention, specifically a cofferdam structure with closed air-sealed soil core and full-pipe bag for seepage prevention. Background Technology

[0002] A cofferdam is a temporary water-retaining structure used in water conservancy engineering construction. Its main function is to create a dry working environment for the construction of permanent structures. The definition and core function of a cofferdam are that it is a commonly used temporary water-retaining structure in the construction of water conservancy projects, bridges, etc. By constructing a closed barrier around the construction area, it prevents water and soil from entering the work area, thereby facilitating drainage, excavation of foundation pits, and construction of permanent structures. Its height usually needs to exceed the highest water level that may occur during the construction period. Most cofferdams are demolished after completion, while a few may be retained as part of the permanent structure.

[0003] The geotextile bags are double-sided non-woven ecological bags made of polyester, polypropylene and other geotextiles through needle punching, heat pressing, cutting and sewing processes. They have the characteristics of UV resistance and high water permeability, and can adapt to the growth needs of plant roots. They are used for slope protection and ecological restoration projects. The cofferdams built by stacking geotextile bags are fast and efficient. However, in actual use, the geotextile bags are prone to collapse and leakage when impacted by water flow. Their seepage prevention is not good and their impact resistance is poor in different environments. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a geotextile core closed-air soil-filled geotextile bag seepage prevention cofferdam structure, which solves the problem of poor seepage prevention at the geotextile bag accumulation point and the problem of poor impact resistance in different environments.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cofferdam structure with a closed-loop soil core and a geotextile tube, comprising a base layer, a first angled support steel plate, and a second angled support steel plate. The lower outer surface of the first angled support steel plate is fixedly driven into the inner surface of the base layer, and the lower outer surface of the second angled support steel plate is fixedly driven into the inner surface of the base layer. A first geotextile tube is stacked on the inner side of the first and second angled support steel plates. A second geotextile tube is stacked on one upper surface of the base layer, and a third geotextile tube is stacked on the other upper surface of the base layer. A support net surrounds the outer sides of the second and third geotextile tubes, and the bottom of the support net is fixed by anchor rods.

[0006] Preferably, the anchor bolt includes a rod section and a support ring, with the support ring fixedly disposed on the upper surface of the rod section, and the support ring being integrally forged with the rod section.

[0007] Preferably, the length of the rod section is not less than one meter, the diameter is not less than five centimeters, and the bottom of the rod section is provided with a conical head.

[0008] Preferably, the inner side of the support ring is sleeved on the inner surface of the lower end of the support net.

[0009] Preferably, the supporting barrier is a barrier structure made of stainless steel wire.

[0010] Preferably, the bottom of the first and second angle support steel plates is driven into the base layer to a depth of not less than fifty centimeters.

[0011] Preferably, the capacity of the first geotextile bag is greater than the capacity of the second and third geotextile bags. The first geotextile bag is stacked inside the first and second angled support plates, while the second and third geotextile bags are stacked outside the first and second angled support plates.

[0012] Compared with the prior art, this utility model provides a seepage-proof cofferdam structure with a core of airtight soil and a full-pipe bag, which has the following beneficial effects:

[0013] By employing a structure that uses three layers of geotextile tubes to clamp the angled support steel plates, the structure not only improves seepage prevention but also enhances impact resistance. Furthermore, by tying the geotextile tubes around the support netting, the geotextile tubes can be prevented from scattering under high-pressure water flow, thus improving support performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure;

[0015] Figure 2 This is a schematic diagram of the overall structure cross-section;

[0016] Figure 3 This is a schematic diagram showing the distribution relationship between the first and second angle support steel plates and the base layer;

[0017] Figure 4 This is the first schematic diagram of the anchor bolt;

[0018] Figure 5 This is the second schematic diagram of the anchor bolt.

[0019] In the diagram: 1. Base layer, 2. First angle support steel plate, 3. Second angle support steel plate, 4. First geotextile bag, 5. Second geotextile bag, 6. Third geotextile bag, 7. Support netting, 8. Anchor bolt, 80. Pole section, 81. Support ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a technical solution: a cofferdam structure with a core of airtight soil and a full-pipe bag for seepage prevention, such as... Figure 1-5 As shown, the structure includes a base layer 1, a first angled support steel plate 2, and a second angled support steel plate 3. The lower outer surface of the first angled support steel plate 2 is fixedly driven into the inner surface of the base layer 1, and the lower outer surface of the second angled support steel plate 3 is also fixedly driven into the inner surface of the base layer 1. A first geotextile bag 4 is stacked on the inner side of the first angled support steel plate 2 and the second angled support steel plate 3. A second geotextile bag 5 is stacked on one side of the upper surface of the base layer 1, and a third geotextile bag 6 is stacked on the other side of the upper surface of the base layer 1. A support net 7 surrounds the outer sides of the second geotextile bag 5 and the third geotextile bag 6, and the bottom of the support net 7 is fixed by anchor rods 8. By using a three-layer geotextile bag structure to hold the angled support steel plate, the structure improves both seepage prevention and impact resistance. Furthermore, by tying the geotextile bags around the support net, the geotextile bags can be prevented from scattering under high-pressure water flow, thus improving support performance.

[0022] Anchor rod 8 includes rod section 80 and support ring 81. The support ring 81 is fixedly installed on the upper surface of rod section 80. The support ring 81 is integrally forged with rod section 80. The integrally forged anchor rod 8 has strong tensile strength and high strength. The length of rod section 80 is not less than one meter and the diameter is not less than five centimeters. The bottom of rod section 80 is provided with a conical head. The conical head at the bottom facilitates driving into the base layer 1 during construction, which can be easily fixed and can tighten the support net 7 to be stretched outside the second geotextile bag 5 and the third geotextile bag 6.

[0023] The inner side of the support ring 81 is sleeved on the inner surface of the lower end of the support net 7. The support ring 81 pulls the support net 7 to tighten and fix it, forming a traction support. The support net 7 adopts a stainless steel wire mesh structure to avoid rust, is easy to use, and has high strength. Stainless steel woven mesh is a metal mesh material made of stainless steel wire through a specific weaving process. It has the characteristics of corrosion resistance, high strength, and long service life.

[0024] The bottom of the first angled support steel plate 2 and the second angled support steel plate 3 are driven into the base layer 1 to a depth of not less than 50 cm, ensuring firm underground support and preventing seepage and piping; thus improving the anti-seepage performance; the capacity of the first geotextile bag 4 is greater than that of the second geotextile bag 5 and the third geotextile bag 6. The first geotextile bag 4 is stacked on the inner side of the first angled support steel plate 2 and the second angled support steel plate 3, while the second geotextile bag 5 and the third geotextile bag 6 are stacked on the outer side of the first angled support steel plate 2 and the second angled support steel plate 3, which can support the stacked cofferdam. It is compact and the structural support is stable and reliable.

[0025] The working principle of this device is as follows: When in use, the lower outer surface of the first angled support steel plate 2 is fixedly driven into the inner surface of the base layer 1, and the lower outer surface of the second angled support steel plate 4 is fixedly driven into the inner surface of the base layer 1. The first geotextile tube 4 is stacked on the inner side of the first angled support steel plate 2 and the second angled support steel plate 3. The first geotextile tube 4 is supported by the stacking on the inner side of the first angled support steel plate 2 and the second angled support steel plate 3, and can support the first angled support steel plate 2 and the second angled support steel plate 3 from the inside out.

[0026] The second geotextile bag 5 is stacked on one side of the upper surface of the base layer 1, and the third geotextile bag 6 is stacked on the other side of the upper surface of the base layer 1. The second geotextile bag 5 and the third geotextile bag 6 are stacked and supported on the outside of the first angle support steel plate 2 and the second angle support steel plate 3, which can support the stacked cofferdam. It is compact and the structural support is stable and reliable.

[0027] The three-section design features a stacked cofferdam with three layers (front, middle, and rear), providing high structural support strength. The middle section is divided into a wall formed by the first and second angled support steel plates 2 and 3, preventing leakage, increasing strength, and preventing the geotextile bags from being scattered by the back-and-forth impact of water flow. A support net 7 is used for tensioning and fixing. The second and third geotextile bags 5 and 6 are surrounded by the support net 7, and the bottom of the support net 7 is fixed by anchor bolts 8. The inner side of the support ring 81 is fitted onto the lower part of the support net 7. On the inner surface of the end, the support ring 81 pulls the support net 7 to tighten and fix it, forming a traction support; the support ring 81 is integrally forged with the rod section 80. The integrally forged anchor rod 8 has strong tensile strength and high strength. The length of the rod section 80 is not less than one meter and the diameter is not less than five centimeters. The bottom of the rod section 80 is provided with a conical head. The conical head at the bottom facilitates driving into the base layer 1 during construction, which can facilitate fixing and can tighten the support net 7 to tighten outside the second geotextile bag 5 and the third geotextile bag 6; it is firmly fixed and tightened.

[0028] Alternatively, the construction plan can begin by stacking a second set of geotextile bags 5 along the water level. This allows for rapid construction by first constructing the cofferdam using the second set of geotextile bags 5. Subsequent reinforcement can then be carried out based on the water flow conditions. First, the first angled support steel plate 2 is reinforced for blocking, then the first set of geotextile bags 4 is stacked for support. Next, the second angled support steel plate 3 is driven into the outside of the second set of geotextile bags 4 for support. Finally, the third set of geotextile bags 6 is stacked in the outside of the second angled support steel plate 3 for support. This method is efficient, allowing for the rapid construction of a cofferdam to block the water flow, followed by gradual reinforcement. Finally, a support net 7 is installed as needed. When constructing a cofferdam, the terrain and the cofferdam's structural shape will vary, inevitably resulting in weak points. The support net 7 can be reinforced at these weak points to prevent the stacked geotextile bags from scattering due to repeated water flow impacts. This flexible and adaptable construction method allows for various combinations of construction techniques based on actual conditions, making it convenient and flexible to use.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cofferdam structure with a core of closed-cell soil and a full-pipe bag for seepage prevention, comprising a base layer (1), a first angled support steel plate (2), and a second angled support steel plate (3), characterized in that: The lower outer surface of the first angled support steel plate (2) is fixedly driven into the inner surface of the base layer (1), and the lower outer surface of the second angled support steel plate (3) is fixedly driven into the inner surface of the base layer (1). The first geotextile tube (4) is stacked on the inner side of the first angled support steel plate (2) and the second angled support steel plate (3). The second geotextile tube (5) is stacked on one side of the upper surface of the base layer (1), and the third geotextile tube (6) is stacked on the other side of the upper surface of the base layer (1). The second geotextile tube (5) and the third geotextile tube (6) are surrounded by a support net (7). The bottom of the support net (7) is fixed by an anchor rod (8).

2. The cofferdam structure with a closed air-sealed soil core and a full-pipe bag for seepage prevention according to claim 1, characterized in that: The anchor rod (8) includes a rod section (80) and a support ring (81). The support ring (81) is fixedly installed on the upper surface of the rod section (80). The support ring (81) is integrally forged with the rod section (80).

3. The cofferdam structure with a closed-loop soil core and full-pipe bag for seepage prevention according to claim 2, characterized in that: The length of the rod section (80) is not less than one meter, the diameter is not less than five centimeters, and the bottom of the rod section (80) is provided with a conical head.

4. The cofferdam structure with a closed-loop soil core and a full-pipe bag for seepage prevention according to claim 2, characterized in that: The inner side of the support ring (81) is sleeved on the inner surface of the lower end of the support net (7).

5. The cofferdam structure with a closed-loop soil core and full-pipe bag for seepage prevention according to claim 1, characterized in that: The supporting barrier (7) is a barrier structure made of stainless steel wire.

6. The cofferdam structure with a closed-loop soil core and a full-pipe bag for seepage prevention according to claim 1, characterized in that: The bottom of the first angle support steel plate (2) and the second angle support steel plate (3) are driven into the base layer (1) to a depth of not less than fifty centimeters.

7. The cofferdam structure with a closed-loop soil core and full-pipe bag for seepage prevention according to claim 1, characterized in that: The capacity of the first geotextile bag (4) is greater than that of the second geotextile bag (5) and the third geotextile bag (6). The first geotextile bag (4) is supported by stacking inside the first angle support steel plate (2) and the second angle support steel plate (3), while the second geotextile bag (5) and the third geotextile bag (6) are supported by stacking outside the first angle support steel plate (2) and the second angle support steel plate (3).

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