Plugging structure of flange dewatering well

Abstract

The utility model discloses a plugging structure of a flange dewatering well, which comprises a dewatering tube well, a post-pouring groove corresponding to the dewatering tube well in position is formed at the top of a foundation slab, the upper end of the dewatering tube well extends into the post-pouring groove, and a connecting flange is formed at the upper end of the dewatering tube well; the cover plate is connected to the connecting flange through a bolt, a pressure relief through hole is formed in the cover plate, and an outer hole opening of the pressure relief through hole is connected with a connector pipe; the sealing gasket is arranged between the connecting flange and the cover plate; and the pressure relief pipe is detachably connected to the connector pipe, a valve is installed on the pressure relief pipe, concrete is poured in the post-pouring groove, and the pressure relief pipe extends to the outer side of the concrete. The problems that the pressure is large when a plurality of dewatering wells of a foundation pit are plugged, and the hidden danger of water seepage exists in the closed dewatering wells are solved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a sealing structure for a flange dewatering well. Background Technology

[0002] In the construction industry, urban land is scarce, and most urban building designs already extensively utilize underground space, with utilization rates and depths gradually increasing. During underground construction, in addition to foundation pit support, the formation of dewatering within the pit facilitates underground structure construction. Once the dewatering wells are ready for closure, they can be sealed. However, as the dewatering wells are gradually sealed, the groundwater volume remains constant while the drainage area decreases, leading to increased pressure in the remaining wells. Groundwater may then gush out from these wells, posing significant challenges to well sealing and quality control. Under these adverse construction conditions, even after the dewatering wells are sealed, a substantial risk of seepage remains. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a sealing structure for flange dewatering wells is provided to solve the problems of high pressure and potential water seepage after sealing multiple dewatering wells in foundation pits.

[0004] To achieve the above objectives, a sealing structure for a flange dewatering well is provided, comprising:

[0005] The foundation slab has a post-cast groove at the top corresponding to the dewatering manhole, the upper end of the dewatering manhole extends into the post-cast groove, and a connecting flange is formed at the upper end of the dewatering manhole.

[0006] A cover plate is bolted to the connecting flange. The cover plate has a pressure relief hole, and a connector pipe is connected to the outer opening of the pressure relief hole.

[0007] A sealing gasket is placed between the connecting flange and the cover plate;

[0008] A pressure relief pipe is detachably connected to the connector pipe, a valve is installed on the pressure relief pipe, concrete is poured into the post-pouring groove, and the pressure relief pipe extends to the outside of the concrete.

[0009] Furthermore, the sealing gasket is a rubber gasket.

[0010] Furthermore, the connector tube is welded to the outer opening of the pressure relief through hole.

[0011] Furthermore, the connector tube has an external thread, the pressure relief tube has an internal thread, and the pressure relief tube is threadedly connected to the connector tube.

[0012] Furthermore, the pressure relief through hole is coaxially arranged with the dewatering well.

[0013] The beneficial effects of this utility model are that the sealing structure of the flange dewatering well reduces the large amount of welding work required for sealing conventional dewatering wells. By using flange connection and pressure relief control, the efficiency of dewatering operations is effectively improved, while ensuring the quality of well sealing and reducing the risk of water seepage after well sealing is completed.

[0014] The sealing structure of this utility model's flange dewatering well features a pressure relief structure, which is more conducive to pressure relief during the sealing process of high-pressure wells. When the dewatering well is sealed, the valve device on the pressure relief pipe can flexibly control the amount of pressure relief. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the sealing structure of the flange dewatering well according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the cover plate according to an embodiment of the present utility model.

[0018] Figure 3 This is a top view of the cover plate according to an embodiment of the present utility model. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Reference Figures 1 to 3 As shown, this utility model provides a sealing structure for a flange dewatering well, including: a dewatering well 1, a cover plate 2, a sealing gasket, and a pressure relief pipe 3.

[0022] In this embodiment, a foundation slab 4 is poured above the dewatering manhole. A post-pouring groove is formed on the top of the foundation slab 4. The post-pouring groove is located corresponding to the dewatering manhole 1, that is, the post-pouring groove is set directly above the dewatering manhole. The upper end of the dewatering manhole 1 extends into the post-pouring groove. A connecting flange 11 is formed at the upper end of the dewatering manhole.

[0023] The cover plate 2 is bolted to the connecting flange 11. Specifically, the cover plate is circular. The shape and size of the cover plate are adapted to the shape and size of the connecting flange. See reference. Figure 1 and Figure 2 As shown, multiple bolt holes are provided on both the cover plate and the connecting flange. These bolt holes are evenly spaced along the circumference of the cover plate or the connecting flange. Tie rods are movably inserted into the bolt holes of both the cover plate and the connecting flange. Two collapsible nuts are screwed onto both ends of the tie rods. These collapsible nuts press against the outer sides of the connecting flange and the cover plate, respectively.

[0024] In this embodiment, a sealing gasket is placed between the connecting flange 11 and the cover plate 2. Preferably, the sealing gasket is a rubber gasket.

[0025] The cover plate 2 has a pressure relief through hole. A connector pipe 21 is connected to the outer opening of the pressure relief through hole. In this embodiment, the connector pipe 21 is welded to the outer opening of the pressure relief through hole. Preferably, the connector pipe is seamlessly welded to the cover plate.

[0026] The pressure relief pipe 3 is detachably connected to the connector pipe 21. A valve is installed on the pressure relief pipe 3. Concrete 41 is poured into the post-pouring trench. The pressure relief pipe 3 extends to the outside of the concrete 41.

[0027] In this embodiment, a pressure sensor is installed on the inner side of the cover plate. The valve on the pressure relief pipe is an electric valve. The sealing structure of the flange dewatering well of this utility model also includes a controller. The controller signal is connected to the pressure sensor and the electric valve. The pressure sensor collects the pressure value inside the dewatering well. The controller acquires this pressure value. When the pressure inside the dewatering well exceeds a preset threshold, the controller controls the electric valve to discharge the groundwater inside the dewatering well through the pressure relief pipe, thereby reducing the water pressure inside the dewatering well and reducing the risk of leakage.

[0028] In a preferred embodiment, the connector tube 21 has external threads. The pressure relief tube 3 has internal threads. The pressure relief tube 3 is threadedly connected to the connector tube 21.

[0029] In this embodiment, the pressure relief hole is located at the center of the plane of the cover plate. Preferably, the pressure relief hole is coaxially arranged with the dewatering well 1.

[0030] The sealing structure of this utility model for a flanged dewatering well involves welding a flange to the top of the dewatering pipe well. During construction, it is installed at the top along with the dewatering well pipe. After dewatering is completed, a cover plate is installed at the top for sealing. If the water pressure is too high, a pressure relief pipe is installed through a hole in the cover plate. One end of the pressure relief pipe is welded to the pressure relief hole in the cover plate, and the other end is fitted with a threaded valve (such as a ball valve).

[0031] When the installation of the cover plate is affected by water pressure, pressure relief pipes are added to release pressure before installing the cover plate. After installation, a ball valve is used to close the well, improving the sealing quality and efficiency of the dewatering well.

[0032] The sealing structure of the flange dewatering well of this utility model reduces the large amount of welding work required when sealing conventional dewatering wells. By adopting flange connection and pressure relief control, it effectively improves the efficiency of dewatering operations, while ensuring the quality of well sealing and reducing the risk of water seepage after well sealing is completed.

[0033] The accessories for the sealing structure of the flange dewatering well of this utility model are all relatively mature single products on the market, which are convenient to purchase and have low cost.

[0034] The sealing structure of the flange dewatering well of this utility model is simple to construct, reduces construction difficulty, saves costs, and is safe and reliable.

[0035] The sealing structure of the flange dewatering well of this utility model is mainly designed to solve the problem of a large amount of welding work when sealing dewatering pipe wells. It adopts a modular construction method to improve construction quality and efficiency.

[0036] The sealing structure of the flange dewatering well of this utility model is mainly to solve the problem of excessive water pressure in the dewatering well, which prevents the well from being sealed normally.

[0037] The sealing structure of this utility model's flange dewatering well features a pressure relief structure, which is more conducive to pressure relief during the sealing process of high-pressure wells. When the dewatering well is sealed, the valve device on the pressure relief pipe can flexibly control the amount of pressure relief.

[0038] The sealing structure of the flanged dewatering well of this utility model has a connecting flange at the top of the dewatering pipe well. It is customized by the manufacturer, which effectively reduces on-site welding work, improves the welding construction quality, and is also more environmentally friendly.

[0039] The construction sequence of the sealing structure for the flange dewatering well of this utility model is as follows:

[0040] When processing dewatering well pipes, connecting flanges that are compatible with the diameter of the well will be selected for welding.

[0041] Dewatering well pipes were laid on site, with control over burial depth and elevation;

[0042] When performing well sealing operations, observe the water head and select whether to use a cover plate with a pressure relief pipe;

[0043] The cover plate with the pressure relief pipe is custom-made;

[0044] Use bolts to seal the connecting flange, gasket, and cover plate. Finally, close the valve on the pressure relief pipe to complete the sealing of the dewatering well. Immediately seal the well according to the drawings.

[0045] This utility model's flange dewatering well sealing structure is easy to operate, reduces construction difficulty, and solves the problem of insufficient water level reduction in the dewatering well due to excessive water pressure in the foundation slab. It provides excellent construction conditions for sealing the dewatering well, saving significant manpower, material resources, and financial resources. The component materials of this flange dewatering well sealing structure are easy to procure and select, improving assembly efficiency and installation quality. This flange dewatering well sealing structure effectively reduces the resistance and operational difficulty caused by excessive water pressure during flange connection, thus improving installation efficiency.

[0046] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A plugging structure of a flange dewatering well, characterized by, include: The foundation slab has a post-cast groove at the top corresponding to the dewatering manhole, the upper end of the dewatering manhole extends into the post-cast groove, and a connecting flange is formed at the upper end of the dewatering manhole. A cover plate is bolted to the connecting flange. The cover plate has a pressure relief hole, and a connector pipe is connected to the outer opening of the pressure relief hole. A sealing gasket is placed between the connecting flange and the cover plate; A pressure relief pipe is detachably connected to the connector pipe, a valve is installed on the pressure relief pipe, concrete is poured into the post-pouring groove, and the pressure relief pipe extends to the outside of the concrete.

2. The plugging structure of a flanged well for precipitation of water according to claim 1, characterized by The sealing gasket is a rubber gasket.

3. The plugging structure of a flanged well for precipitation according to claim 1, wherein The connector pipe is welded to the outer opening of the pressure relief through hole.

4. The plugging structure of a flanged well for precipitation according to claim 1, wherein The connector tube has an external thread, and the pressure relief tube has an internal thread. The pressure relief tube is threadedly connected to the connector tube.

5. The plugging structure of a flanged well for collecting water according to claim 1, wherein The pressure relief orifice is coaxially arranged with the dewatering well.

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