A rubber panel gabion stone cage cofferdam

Abstract

The present invention discloses a rubber panel gabion gabion cofferdam. The rubber panel replaces the traditional core wall's anti-seepage material, and the gabion gabion replaces traditional rolled earth and stone or concrete as the cofferdam's damming material. Flexible closed-cell foam board protective layers are provided on both the upstream and downstream sides of the rubber panel, protecting the rubber panel while improving its adaptive deformation capability. Gabion gabions are provided upstream and downstream of the flexible closed-cell foam board protective layer to provide surface protection and transition. The upstream gabion secures the rubber panel and the flexible closed-cell foam board protective layer, preventing water from scouring the flexible closed-cell foam board protective layer. The downstream gabion provides transition and protection. The present invention eliminates the mechanical paving and rolling process for weir filling, reduces construction difficulty, accelerates construction progress, and reduces cofferdam construction costs.

Description

Technical Field

[0001] The invention relates to a water conservancy and hydropower engineering cofferdam, in particular to a rubber panel gabion stone cage cofferdam. Background Art

[0002] In the design of water conservancy and hydropower projects, cofferdams, as one of the most critical structures in the construction process of diversion and interception, have always been highly valued by designers and constructors. The most critical aspect of a cofferdam's structure is its anti-seepage structure. Traditional cofferdams often use clay or asphalt concrete as anti-seepage materials. Their design and construction are constrained by the surrounding environment, resulting in complex construction processes and high investment costs. Therefore, a cofferdam structure that is economical, quality-controlled, and easy to construct is needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a rubber panel gabion stone cage cofferdam, which solves the problem of rapid construction of the cofferdam while ensuring quality.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: a rubber panel gabion gabion cofferdam, comprising a weir body, a concrete base and a foundation anti-seepage body, the weir body comprising a facing gabion, an upper flexible closed-cell foam board protective layer, a rubber panel, a lower flexible closed-cell foam board protective layer, a transition gabion and a weir body gabion, the facing gabion, the transition gabion and the weir body gabion are all gabion gabions, the weir body gabion serving as the main structure of the cofferdam is formed by closely arranging gabions to form a step shape, the transition gabion is closely arranged to the weir top on the upstream side of the weir body gabion, the upstream side of the transition gabion maintains a step shape, the lower flexible closed-cell foam board protective layer is closely attached to the step surface on the upstream side of the transition gabion, the rubber panel is closely attached to the upstream side surface of the lower flexible closed-cell foam board protective layer, the upper flexible closed-cell foam board protective layer is closely attached to the upstream side surface of the rubber panel, the facing gabion is arranged on the upstream side of the upstream flexible closed-cell foam board protective layer and maintains a surface step shape.

[0005] The facing gabion is formed by stacking "L"-shaped gabion gabions.

[0006] The concrete base is poured above the foundation anti-seepage body along the axis direction of the cofferdam, and the top of the concrete base is connected to the rubber panel.

[0007] The thickness of the rubber panel is not less than 3 cm, and the upper flexible closed-cell foam board protective layer and the lower flexible closed-cell foam board protective layer are made of polyethylene closed-cell foam board with a thickness of not less than 2 cm.

[0008] The particle size of the blocks in the weir body gabion ranges from 150mm to 500mm; the particle size of the blocks in the transition gabion ranges from 100mm to 350mm; and the particle size of the blocks in the facing gabion ranges from 100mm to 300mm.

[0009] The beneficial effects of the present invention are: eliminating the construction process of mechanical paving and rolling of the earth-rock cofferdam, reducing construction difficulty, accelerating construction progress, and reducing cofferdam construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a cross-sectional view of the rubber panel gabion stone cage cofferdam of the present invention.

[0011] Figure 2 This is a detailed diagram of the rubber panel gabion stone cage cofferdam of the present invention. DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0013] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0015] like Figure 1 、 2As shown, the rubber panel gabion gabion cofferdam of the present invention includes a weir body, a concrete base 6 and a foundation anti-seepage body 7, the weir body includes a facing gabion 5, an upper flexible closed-cell foam board protective layer 2, a rubber panel 1, a lower flexible closed-cell foam board protective layer 8, a transition gabion 3 and a weir body gabion 4, the facing gabion 5, the transition gabion 3 and the weir body gabion 4 are all gabion gabions, the weir body gabion 4 as the main structure of the cofferdam is formed by closely arranging gabions to form a step shape, the transition gabion 3 is closely arranged to the weir top on the upstream side of the weir body gabion 4, and the upstream side of the transition gabion maintains a step shape, the lower flexible closed-cell foam board protective layer 8 is closely attached to the step surface on the upstream side of the transition gabion 3, the rubber panel 1 is closely attached to the upstream side surface of the lower flexible closed-cell foam board protective layer 8, the upper flexible closed-cell foam board protective layer 2 is closely attached to the upstream side surface of the rubber panel 1, and the facing gabion 5 is arranged on the upstream side of the upstream flexible closed-cell foam board protective layer 2 and maintains a surface step shape.

[0016] Preferably, the facing gabion 5 is made of "L"-shaped gabion gabions. The concrete base 6 is cast above the foundation anti-seepage body 7 along the axis of the cofferdam, and the top of the concrete base 6 is connected to the rubber panel 1. The thickness of the rubber panel 1 is not less than 3 cm, and the upper flexible closed-cell foam board protective layer 2 and the lower flexible closed-cell foam board protective layer 8 are made of polyethylene closed-cell foam board with a thickness of not less than 2 cm. The particle size of the rocks in the weir body gabion 4 ranges from 150 mm to 500 mm; the particle size of the rocks in the transition gabion 3 ranges from 100 mm to 350 mm; and the particle size of the rocks in the facing gabion 5 ranges from 100 mm to 300 mm.

[0017] The rubber panel 1 is connected to the concrete base 6, the concrete base 6 is connected to the foundation anti-seepage body 7, the flexible closed-cell foam board protective layer is tightly adhered to the upstream and downstream of the rubber panel 1, a facing gabion 5 is set on the upstream side of the upstream flexible closed-cell foam board protective layer 2, a transition gabion 3 is set on the downstream side of the upstream flexible closed-cell foam board protective layer 2, and a weir gabion 4 is set on the downstream side of the transition gabion as the main structure of the cofferdam.

[0018] The present invention replaces the traditional anti-seepage material of the cofferdam body with rubber panels, and replaces traditional rolled earth and rock or concrete with weir gabions as the main body of the cofferdam. Flexible closed-cell foam board protective layers are installed on the upstream and downstream sides of the rubber panels, protecting the rubber panels while improving their adaptability to deformation. Facing gabions and transition gabions are respectively installed upstream and downstream of the flexible closed-cell foam board protective layer. The facing gabion is located upstream of the flexible closed-cell foam board protective layer to prevent water from scouring the flexible closed-cell foam board protective layer while maintaining the rubber panels and the flexible closed-cell foam board protective layer. The transition gabion is located downstream of the flexible closed-cell foam board protective layer to provide a transition and protection between the flexible closed-cell foam board protective layer and the cofferdam gabion. The cofferdam gabion is located downstream of the transition gabion and forms the main body of the cofferdam structure. This is suitable for cofferdams or low dams and riverbank projects with lower anti-seepage requirements.

[0019] The protective gabion is an "L"-shaped gabion, which is arranged on the upstream side of the upstream flexible closed-cell foam board protective layer to fix the rubber panel and the flexible closed-cell foam board protective layer, while preventing the water flow from scouring the upstream flexible closed-cell foam board protective layer. The contact surface between the protective gabion and the flexible closed-cell foam board protective layer is flat and straight, reducing the concentrated stress on the flexible closed-cell foam board protective layer.

[0020] The transition gabion is arranged on the downstream side of the downstream flexible closed-cell foam board protective layer. While supporting the downstream flexible closed-cell foam board protective layer, it also plays a role of transition and protection. The contact surface between the transition gabion and the flexible closed-cell foam board protective layer is flat and straight, reducing the concentrated stress generated between the transition gabion and the flexible closed-cell foam board protective layer.

[0021] The invention is applicable to cofferdams or low dams and river embankment projects with relatively low anti-seepage requirements, and its construction method is as follows: (I) on the premise of a good cofferdam foundation anti-seepage body, a concrete base is poured along the axis direction of the cofferdam, the concrete base is effectively connected to the foundation anti-seepage body, and a rubber panel is buried on the top; (II) blocks are pre-filled in the gabion net to make a weir body gabion, a face protection gabion and a transition gabion; (III) the weir body gabions are closely placed in the order from upstream to downstream by using a lifting machine, and after the first layer is placed, the next layer is placed in the same order until the weir top; (IV) on the weir body gabion On the upstream side, transition gabions are placed from low to high until the weir top; (V) a downstream flexible closed-cell foam board protective layer is laid on the upstream surface and top surface of the lower transition gabion; (VI) a rubber panel connected to the concrete base (or lower layer) is laid on the upstream surface and top surface of the downstream flexible closed-cell foam board protective layer; (VII) an upstream flexible closed-cell foam board protective layer is laid on the upstream surface and top surface of the rubber panel; (VIII) a facing gabion is placed on the upstream surface and top surface of the upstream flexible closed-cell foam board protective layer; (IX) steps V, VI, VII, and VIII are repeated until the weir top is constructed. The present invention fully utilizes the characteristics of the rubber panel gabion gabion cofferdam, eliminates the construction process of mechanical paving and rolling for the weir filling, reduces the construction difficulty, speeds up the construction progress, and reduces the cofferdam construction cost.

[0022] The cofferdam construction method uses lifting machinery to place the weir body gabions tightly in the order from upstream to downstream. After the first layer is placed, the next layer is placed in the same order until the weir top, and the upstream side of the weir body gabions forms a step shape.

[0023] The cofferdam construction method utilizes a lifting machine to closely place transition gabions from low to high on the upstream side of the weir body gabions until the weir top, and the upstream side of the transition gabions maintains a step shape.

[0024] The cofferdam construction method comprises laying a downstream flexible closed-cell foam board protective layer on the upstream surface and top surface of the transition gabion at the lower layer, wherein the downstream flexible closed-cell foam board protective layer is closely attached to the transition gabion.

[0025] The cofferdam construction method comprises laying a rubber panel connected to a concrete base (or lower layer) on the upstream surface and top surface of a downstream flexible closed-cell foam board protective layer.

[0026] The cofferdam construction method comprises laying an upstream flexible closed-cell foam board protective layer on the upstream surface and top surface of the rubber panel.

[0027] The cofferdam construction method uses a lifting machine to place protective gabions on the upstream surface and top surface of the upstream flexible closed-cell foam board protective layer, and the protective gabions are closely attached to the upstream flexible closed-cell foam board protective layer.

[0028] In this embodiment, the size of the gabion stone cage can be determined by the design shape of the cofferdam and the loading and unloading capacity, wherein the size of the weir body stone cage 4 is not less than 2m*1m*1m (length*width*height); the size of the transition stone cage 3 is not less than 1.5m*1m*1m (length*width*height); the face stone cage 5 is L-shaped, 1.5m long, 1.5 times the width of the transition stone cage 3, the minimum thickness is half the height of the transition stone cage 3, and the maximum thickness is the same as the height of the transition stone cage (3). The particle size range of the block stones in the weir body stone cage is 150mm~500mm; the particle size range of the block stones in the transition stone cage is 100mm~350mm; the particle size range of the block stones in the face stone cage is 100mm~300mm;

[0029] The present invention adopts rubber panels instead of the anti-seepage materials of traditional cofferdams, thereby solving the problem that the construction of the traditional earth-rock cofferdam anti-seepage body (clay or asphalt) is restricted by factors such as climate environment and local materials, and is subject to many construction interferences. The invention adopts gabion stone cages instead of traditional earth and stone materials as the main structure of the cofferdam, thereby solving the problem that the construction process of the earth-rock cofferdam requires mechanical paving and rolling, which has a long construction period and cumbersome construction procedures. At the same time, it solves the problem that the construction of concrete cofferdams is difficult and costly.

[0030] This invention achieves the goal of rapid construction for cofferdams, low dams, and riverbanks with lower anti-seepage requirements, ensuring quality while saving labor, machinery, and other costs, effectively shortening construction time. The rubber panels and closed-cell foam boards in this invention are flexible sheets that can be designed and constructed based on specific project head and other requirements. The gabion cage size can also be adjusted based on the machine configuration capacity, providing strong applicability.

[0031] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of the patent of the present invention cannot be limited by these embodiments alone. That is, all equivalent changes or modifications made to the spirit disclosed by the present invention still fall within the scope of the patent of the present invention.

Claims

1. A rubber panel gabion stone cage cofferdam, comprising a weir body, a concrete base (6) and a foundation anti-seepage body (7), characterized in that: The weir body includes a face guard gabion (5), an upper flexible closed-cell foam board protective layer (2), a rubber panel (1), a lower flexible closed-cell foam board protective layer (8), a transition gabion (3) and a weir body gabion (4). The face guard gabion (5), the transition gabion (3) and the weir body gabion (4) are all gabion gabions. The weir body gabion (4) as the main structure of the cofferdam is formed into a step shape by closely arranging gabion gabions. The transition gabion (3) is closely arranged on the upstream side of the weir body gabion (4) to the weir top. The upstream side of the transition gabion maintains a step shape. The lower flexible closed-cell foam board protective layer (8) is closely attached to the transition gabion. The gabion (3) is formed by stacking "L"-shaped gabions; the concrete base (6) is cast above the foundation anti-seepage body (7) along the axis of the cofferdam, and the top of the concrete base (6) is connected to the rubber base (1).

2. The rubber panel gabion cofferdam according to claim 1 is characterized in that: The rubber panel (1) has a thickness of not less than 3 cm, and the upper flexible closed-cell foam board protective layer (2) and the lower flexible closed-cell foam board protective layer (8) are made of polyethylene closed-cell foam boards with a thickness of not less than 2 cm.

3. The rubber panel gabion cofferdam according to claim 1 is characterized in that: The particle size of the blocks in the weir body gabion (4) ranges from 150 mm to 500 mm; the particle size of the blocks in the transition gabion (3) ranges from 100 mm to 350 mm; and the particle size of the blocks in the face gabion (5) ranges from 100 mm to 300 mm.

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