Water interception device and method for coping with surface runoff in municipal engineering

Abstract

The invention provides a water interception device and method for coping with surface runoff in municipal engineering, and relates to the technical field of municipal drainage construction.The device comprises an impermeable film and at least two sets of water interception assemblies arranged in parallel, a water interception body comprises an outer framework, a plurality of inner rods, a rotating shaft and a connecting thin film, and the outer framework comprises a first outer framework and a second outer framework; the multiple inner rods are located between the first outer framework and the second outer framework, and the outer frameworks and the inner rods are hinged through rotating shafts to form a fan framework structure; the impermeable film is fixedly connected with the outer end face of the first outer framework and the outer end face of the second outer framework, and the impermeable film is bent at the bottom of the rotating shaft so that the impermeable film can be unfolded or folded along with opening and closing of the fan framework structure. The connecting film connects the adjacent outer framework and inner rod and is arranged at the middle upper part of the fan framework structure; and the lower part of the fan rib structure forms a hollow structure due to a gap between the inner rods. Construction is easy and convenient, seepage prevention is stable, maintenance is convenient and fast, and the service life can be prolonged.

Description

Technical Field

[0001] This invention relates to the field of municipal drainage construction technology, and in particular to a water interception device and method for dealing with surface runoff in municipal engineering. Background Technology

[0002] In municipal construction, intercepting ditches are important facilities for dealing with surface runoff. Common construction methods include brick or stone masonry, laying precast concrete blocks, and casting in-situ concrete. To effectively intercept surface runoff and prevent seepage, existing technologies typically employ seepage prevention measures such as laying geomembranes and applying waterproof mortar.

[0003] However, in actual construction, the construction of intercepting ditches on both sides of municipal foundation pits is often difficult to synchronize with the main protective structure. The complex masonry and plastering processes result in high construction costs. Especially in municipal utility tunnel or drainage construction scenarios, various factors constrain the effectiveness of intercepting ditches, even if some ditches meet the requirements in terms of overall strength and construction quality. Over long-term use, due to foundation settlement, ditch cracks, and other reasons, leakage commonly occurs in the intercepting ditches, leading to slope instability and other safety hazards, and potentially affecting the safety of the overall protective structure.

[0004] Therefore, there is an urgent need for a water interception device and method for dealing with surface runoff in municipal engineering to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a water interception device and method for dealing with surface runoff in municipal engineering, so as to solve the technical problems of existing water interception ditches, such as cumbersome construction, high cost, easy leakage, and unstable water interception effect. The various technical effects of the preferred technical solutions provided by this invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a water interception device for dealing with surface runoff in municipal engineering, comprising an impermeable membrane and at least two sets of parallel water interception components. Each water interception component includes an outer frame, multiple inner rods, a rotating shaft, and a connecting membrane.

[0008] The outer frame includes a first outer frame and a second outer frame, and a plurality of inner rods are located between the first outer frame and the second outer frame. The outer frame and the inner rods are hinged together by the pivot to form a fan-shaped structure.

[0009] The geomembrane is fixedly connected to the outer end face of the first outer frame and the outer end face of the second outer frame, and the geomembrane is bent at the bottom of the rotating shaft so that the geomembrane can unfold or fold with the opening and closing of the fan-shaped structure.

[0010] The connecting film connects the adjacent outer frame and the inner rod, and is located in the upper middle part of the fan-shaped structure; the lower part of the fan-shaped structure has a hollow structure due to the gap between the inner rods.

[0011] Preferably, the maximum opening angle between the first exoskeleton and the second exoskeleton is set to no more than 90 degrees.

[0012] Preferably, the plane where the geomembrane connects to the outer end face of the first outer frame is the bottom surface, and the plane where the geomembrane connects to the outer end face of the second outer frame is the top surface. The bottom surface is provided with connection holes for installation to the top of the foundation pit.

[0013] Preferably, the first outer frame, the second outer frame, and the inner rod are all the same length, and the ends of the first outer frame and the second outer frame do not extend beyond the edge of the geomembrane.

[0014] Preferably, the longitudinal sections of the first outer frame, the second outer frame, and the inner rod are all rectangular, and the cross-sectional areas of the first outer frame and the second outer frame are larger than the cross-sectional area of ​​the inner rod.

[0015] Preferably, the connecting film comprises an elastic film with pleats, the pleat direction being consistent with the opening and closing direction of the fan rib structure.

[0016] Preferably, the thickness of the geomembrane is greater than the thickness of the connecting film.

[0017] Preferably, the geomembrane comprises a weather-resistant polyvinyl chloride membrane with a thickness of 0.8-1.5 mm, the surface of the geomembrane is provided with an anti-ultraviolet coating, and the geomembrane is provided with a reinforcing layer at the opening and closing corner of the fan-shaped structure, the reinforcing layer comprising a superimposed structure of multiple geomembranes of the same material.

[0018] Preferably, after the fan-shaped structure is fully unfolded, the first included angles between the multiple inner rods are all the same, the second included angle between the first outer frame and the inner rods and the third included angle between the inner rods and the second outer frame are the same, and the second included angle is greater than the first included angle.

[0019] A method for intercepting surface runoff in municipal engineering, employing the aforementioned water interception device for surface runoff in municipal engineering, includes the following steps:

[0020] S1: Install the water interception device at the bottom of the water interception ditch, ensuring that the opening faces the water-facing side;

[0021] S2: When surface runoff flows into the intercepting device in the forward direction, the fan-shaped structure unfolds around the rotating shaft under the impact force of the water flow, and the connecting membrane stretches with the unfolding angle.

[0022] S3: Debris in the runoff is intercepted in the water interception device through the hollow structure, and the filtered water flows to the collection well;

[0023] S4: When the hollow structure is blocked, the water level in the water interception device rises, and the geomembrane adheres to the bottom and sidewall of the ditch under water pressure to form a seepage-proof seal.

[0024] The water interception device for surface runoff in municipal engineering provided by this invention forms a stable fan-shaped structure through the hinged structure of the outer frame, inner rod and rotating shaft. The geomembrane is fixedly connected to the outer end face of the first and second outer frames and bent at the bottom to ensure the synchronicity and sealing of the geomembrane as it opens and closes with the fan-shaped structure. The connecting film set in the middle and upper part enhances the integrity of the fan-shaped structure, and the hollow structure at the bottom can realize the filtration of debris and separation of water flow. The overall structure takes into account the functions of water interception, seepage prevention and filtration, and is flexible in opening and closing to adapt to the runoff impact of different flow rates.

[0025] This invention provides a method for intercepting surface runoff in municipal engineering, which is simple to operate and quick to install; the fan-shaped structure is automatically driven to unfold by water flow without the need for additional power; it achieves debris filtration and emergency seepage prevention in stages, adapting to different working conditions such as normal runoff and blockage, ensuring the reliability of water interception, and reducing manual maintenance costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a structural embodiment of a water interception device for dealing with surface runoff in municipal engineering according to the present invention;

[0028] Figure 2 This is a schematic diagram of the water interception component in the water interception device for dealing with surface runoff in municipal engineering according to the present invention;

[0029] Figure 3 This is a schematic diagram of a water interception zone composed of multiple sets of water interception devices.

[0030] In the diagram: 1. Geomembrane; 2. Water interception component; 21. Outer frame; 211. First outer frame; 212. Second outer frame; 22. Inner rod; 23. Rotating shaft; 24. Connecting membrane; 25. Hollowed-out structure. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0032] Figure 1 This is a structural schematic diagram of this embodiment, as shown below. Figure 1 As shown, this embodiment provides a water interception device for dealing with surface runoff in municipal engineering, including a geomembrane 1 and at least two sets of parallel water interception components 2.

[0033] Figure 2 This is a schematic diagram of the water interception component in this embodiment, as shown below. Figure 2 As shown, the water interception component 2 includes an outer frame 21, multiple inner rods 22, a rotating shaft 23, and a connecting membrane 24.

[0034] The outer frame 21 includes a first outer frame 211 and a second outer frame 212. Multiple inner rods 22 are located between the first outer frame 211 and the second outer frame 212. The outer frame 21 and the inner rods 22 are hinged together by a pivot 23 to form a fan-shaped structure.

[0035] In this embodiment, the outer frame 21 includes a symmetrically distributed first outer frame 211 and a second outer frame 212, both of which are long, rigid frames. Multiple inner rods 22 are located between the first outer frame 211 and the second outer frame 212, distributed at equal angular intervals to form a radial arrangement. The lower ends of the first outer frame 211, the second outer frame 212, and all the inner rods 22 are hinged to the same pivot 23, while the upper ends are semi-open and not fixed, forming a fan-shaped structure that can be folded / unfolded around an axis.

[0036] The geomembrane 1 is fixedly connected to the outer end face of the first outer frame 211 and the outer end face of the second outer frame 212. The geomembrane 1 is bent at the bottom of the rotating shaft 23 so that the geomembrane 1 can be unfolded or folded with the opening and closing of the fan-shaped structure. The arrow in the figure indicates the unfolding and folding direction.

[0037] In this embodiment, the geomembrane 1 is an integral membrane structure. Optionally, the edges of the geomembrane 1 are fixed to the outer end face of the first outer frame 211 and the outer end face of the second outer frame 212 by hot melt bonding or bolt strips. The width of the bonding or fixing is not less than 1 / 2 of the width of the outer frame. Furthermore, the geomembrane 1 is bent at the bottom of the rotating shaft 23. Optionally, a 5-10mm expansion allowance can be reserved at the bend so that the geomembrane 1 can be opened or folded synchronously with the opening and closing of the fan structure, and there is no wrinkle accumulation when folding.

[0038] The connecting film 24 connects the adjacent outer frame 21 and inner rod 22, and is located in the upper middle part of the fan rib structure; the lower part of the fan rib structure forms a hollow structure 25 due to the gap between the inner rods 22. In this embodiment, the width of the connecting film 24 is 1 / 2 to 2 / 3 of the total length of the fan rib structure.

[0039] In this municipal engineering project, the interception device for surface runoff is supported by a stable fan-shaped structure formed by the hinged structure of the outer frame 21, inner rod 22 and rotating shaft 23. The geomembrane 1 is fixedly connected to the outer end face of the first outer frame 211 and the second outer frame 212 and bent at the bottom to ensure the synchronicity and sealing of the geomembrane 1 with the opening and closing of the fan-shaped structure. The connecting membrane 24 set in the middle and upper part enhances the integrity of the fan-shaped structure, and the hollow structure 25 in the lower part can realize the filtration of debris and the separation of water flow. The overall structure takes into account the functions of interception, seepage prevention and filtration, and is flexible in opening and closing to adapt to the runoff impact of different flow rates.

[0040] As an optional implementation, the maximum opening angle between the first outer frame 211 and the second outer frame 212 is set to no more than 90 degrees. This prevents the fan-shaped structure from over-expanding due to excessive water flow impact, and prevents the outer frame 21, inner rod 22, or geomembrane 1 from deforming or tearing due to excessive stress, thus ensuring the overall structural stability and service life.

[0041] As an optional implementation, the plane where the geomembrane 1 connects to the outer end face of the first outer frame 211 is the bottom surface, and the plane where the geomembrane 1 connects to the outer end face of the second outer frame 212 is the top surface. The bottom surface is provided with connection holes for installation to the top of the foundation pit.

[0042] In this embodiment, multiple connection holes are evenly distributed on the bottom surface for fixing the water interception device for surface runoff control in this municipal engineering project to the concrete base layer at the top of the foundation pit using bolts. By setting connection holes on the bottom surface, it is easy to firmly fix the water interception device to the top of the foundation pit, preventing the device from shifting due to runoff impact. At the same time, the angle between the bottom and top surfaces is matched to improve the runoff interception efficiency.

[0043] As an optional implementation, the first outer frame 211, the second outer frame 212, and the inner rod 22 are all the same length, and the ends of the first outer frame 211 and the second outer frame 212 do not extend beyond the edge of the geomembrane 1.

[0044] By setting the lengths of the first outer frame 211, the second outer frame 212, and the inner rod 22 to be the same, the force is evenly distributed when the fan structure opens and closes, avoiding local stress concentration. The ends of the first outer frame 211 and the second outer frame 212 do not extend beyond the edge of the geomembrane 1, which can prevent the outer frame 21 from being exposed and abrading the surrounding structure or scratching the operators. At the same time, it can prevent the geomembrane 1 from being locally torn due to the pushing of the ends of the outer frame 21, thus improving the structural safety and sealing performance.

[0045] As an optional implementation, the longitudinal sections of the first outer frame 211, the second outer frame 212, and the inner rod 22 are all rectangular, and the cross-sectional areas of the first outer frame 211 and the second outer frame 212 are larger than the cross-sectional area of ​​the inner rod 22.

[0046] By setting a rectangular cross-section, the contact area between the outer frame 21 and the geomembrane 1 can be increased, thereby improving the connection stability. The cross-sectional area of ​​the outer frame 21 is larger than that of the inner rod 22, which can provide stronger support to resist the impact of water flow. The smaller cross-sectional area of ​​the inner rod 22 reduces the overall weight, thus achieving a balance between structural strength and lightweight.

[0047] As an optional implementation, the connecting film 24 includes a wrinkled elastic film, the wrinkle direction being consistent with the opening and closing direction of the fan rib structure.

[0048] Specifically, the connecting film in this embodiment includes a wrinkled elastic film that can flexibly expand and contract when the fan rib structure is opened and closed, thus avoiding restricting the movement of the fan rib structure; the elastic material ensures the reset capability after expansion and contraction, while sealing the gap in the upper part of the fan rib to prevent small debris from entering the inside of the device, thus balancing flexibility and protection.

[0049] As an optional implementation, the thickness of the geomembrane 1 in this embodiment is greater than the thickness of the connecting film 24. The thicker geomembrane 1 ensures the impermeability and tear resistance of the main water interception surface, meeting the core seepage prevention requirements; the thinner connecting film 24 focuses on elasticity and extensibility, reducing the resistance to the opening and closing of the fan-shaped structure, rationally allocating material properties, and reducing material consumption while ensuring functionality.

[0050] Optionally, the geomembrane 1 in this embodiment includes a weather-resistant polyvinyl chloride membrane with a thickness of 0.8-1.5 mm. The surface of the geomembrane 1 is provided with an anti-ultraviolet coating. The geomembrane 1 is provided with a reinforcing layer at the corner where the fan-shaped structure opens and closes. The reinforcing layer includes a superimposed structure of multiple geomembranes 1 of the same material.

[0051] Among them, the weather-resistant PVC membrane ensures impermeability and resistance to acid and alkali corrosion; the UV-resistant coating delays material aging and is suitable for long-term outdoor use; the reinforcing layer at the corners enhances local fatigue resistance, prevents tearing caused by frequent opening and closing, and significantly extends the service life of the device.

[0052] As an optional implementation, after the fan-shaped structure in this embodiment is fully unfolded, the first included angles between the multiple inner rods 22 are all the same, the second included angle between the first outer frame and the inner rods, and the third included angle between the inner rods and the second outer frame are the same, and the second included angle is greater than the first included angle.

[0053] By setting the first angle between multiple inner rods 22 to be the same, the uniform angle distribution makes the force on each inner rod 22 more balanced when water flows, avoiding local overload; the angle between the outer frame 21 and the inner rods 22 is larger, which can enhance the structural strength of the edge area, while optimizing the water flow guidance, so that the runoff flows more smoothly to the collection well and improves the water interception efficiency.

[0054] This embodiment also provides a method for intercepting surface runoff in municipal engineering, using the aforementioned water interception device for surface runoff in municipal engineering, including the following steps:

[0055] S1: Install the water interception device at the bottom of the water interception ditch, ensuring that the opening faces the water-facing side;

[0056] In actual use, first level the bottom of the intercepting ditch, and then fix the intercepting device to the bottom of the concrete ditch by connecting expansion bolts in the connection holes on the bottom of the intercepting device, so as to ensure that the direction of surface runoff from the opening of the intercepting device is consistent.

[0057] S2: When surface runoff flows into the intercepting device in the forward direction, the fan-shaped structure unfolds around the rotating shaft 23 under the impact force of the water flow, and the connecting membrane 24 extends with the unfolding angle.

[0058] In this embodiment, the fan rib structure increases with the increase of flow rate, and the maximum unfolding angle of the fan rib structure does not exceed 90°. The connecting film extends synchronously with the unfolding angle.

[0059] S3: Debris in the runoff, such as mud, gravel, garbage, silt, etc., are intercepted in the water interception device through the hollow structure 25, and the filtered water flows to the collection well;

[0060] S4: When the perforated structure is blocked, the water flow stagnates in the intercepting device, causing the water level to rise. Under the action of water pressure, the geomembrane 1 adheres to the bottom and sidewalls of the ditch to form a seepage-proof seal, thereby preventing groundwater infiltration, reducing the corrosion of the bottom and sidewalls of the intercepting ditch by groundwater, and extending the service life of the intercepting ditch.

[0061] like Figure 3As shown, in this embodiment, multiple sets of water interception devices can be used to form a water interception belt. The connection points are connected by overlapping impermeable membranes 1, and the connection points are pressed and fixed by an outer frame 21.

[0062] The water interception method used in this municipal engineering project to deal with surface runoff is simple to operate and quick to install; the fan-shaped structure is automatically driven to unfold by water flow, without the need for additional power; it achieves debris filtration and emergency seepage prevention in stages, adapting to different working conditions such as normal runoff and blockage, ensuring the reliability of water interception, while reducing manual maintenance costs.

[0063] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A water interception device for dealing with surface runoff in municipal engineering, characterized in that, It includes a geomembrane and at least two sets of parallel water-cutting components, each water-cutting component comprising an outer frame, multiple inner rods, a rotating shaft, and a connecting membrane, wherein: The outer frame includes a first outer frame and a second outer frame, and a plurality of inner rods are located between the first outer frame and the second outer frame. The outer frame and the inner rods are hinged together by the pivot to form a fan-shaped structure. The geomembrane is fixedly connected to the outer end face of the first outer frame and the outer end face of the second outer frame, and the geomembrane is bent at the bottom of the rotating shaft so that the geomembrane can unfold or fold with the opening and closing of the fan-shaped structure. The connecting film connects the adjacent outer frame and the inner rod, and is located in the upper middle part of the fan-shaped structure; the lower part of the fan-shaped structure has a hollow structure due to the gap between the inner rods.

2. The water interception device for surface runoff in municipal engineering according to claim 1, characterized in that: The maximum opening angle between the first exoskeleton and the second exoskeleton is set to no more than 90 degrees.

3. The water interception device for surface runoff in municipal engineering according to claim 1 or 2, characterized in that: The plane where the geomembrane connects to the outer end face of the first outer frame is the bottom surface, and the plane where the geomembrane connects to the outer end face of the second outer frame is the top surface. The bottom surface is provided with connection holes for installation to the top of the foundation pit.

4. The water interception device for surface runoff in municipal engineering according to claim 1 or 2, characterized in that: The first outer frame, the second outer frame, and the inner rod are all the same length, and the ends of the first outer frame and the second outer frame do not extend beyond the edge of the geomembrane.

5. The water interception device for surface runoff in municipal engineering according to claim 4, characterized in that: The longitudinal sections of the first outer frame, the second outer frame, and the inner rod are all rectangular, and the cross-sectional areas of the first outer frame and the second outer frame are larger than the cross-sectional area of ​​the inner rod.

6. The water interception device for surface runoff in municipal engineering according to claim 1 or 2, characterized in that: The connecting film includes a wrinkled elastic film, the wrinkle direction being consistent with the opening and closing direction of the fan rib structure.

7. The water interception device for surface runoff in municipal engineering according to claim 6, characterized in that: The thickness of the geomembrane is greater than the thickness of the connecting film.

8. The water interception device for surface runoff in municipal engineering according to claim 1 or 2, characterized in that: The geomembrane includes a weather-resistant polyvinyl chloride membrane with a thickness of 0.8-1.5 mm. The surface of the geomembrane is provided with an anti-ultraviolet coating. The geomembrane is provided with a reinforcing layer at the corner where the fan-shaped structure opens and closes. The reinforcing layer includes a superimposed structure of multiple geomembranes of the same material.

9. The water interception device for surface runoff in municipal engineering according to claim 1 or 2, characterized in that: After the fan-shaped structure is fully unfolded, the first included angles between the multiple inner rods are all the same, the second included angle between the first outer frame and the inner rods and the third included angle between the inner rods and the second outer frame are the same, and the second included angle is greater than the first included angle.

10. A method for intercepting surface runoff in municipal engineering, characterized in that, The water interception device for surface runoff in municipal engineering as described in any one of claims 1-9 includes the following steps: S1: Install the water interception device at the bottom of the water interception ditch, ensuring that the opening faces the water-facing side; S2: When surface runoff flows into the intercepting device in the forward direction, the fan-shaped structure unfolds around the rotating shaft under the impact force of the water flow, and the connecting membrane stretches with the unfolding angle. S3: Debris in the runoff is intercepted in the water interception device through the hollow structure, and the filtered water flows to the collection well; S4: When the hollow structure is blocked, the water level in the water interception device rises, and the geomembrane adheres to the bottom and sidewall of the ditch under water pressure to form a seepage-proof seal.

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