High-density water filter pipe for underground water control

Abstract

The utility model relates to a high-density water filter pipe for underground water control, a well wall pipe formed by rolling and a filter screen, which can simplify the construction steps, improve the efficiency and adapt to various aquifers. Through different construction modes, the water filter pipe can solve the problem that a down-the-hole hammer drilling machine or a drilling machine in a narrow space cannot directly construct.

Description

Technical Field

[0001] This application relates to the field of civil engineering construction, and in particular to a high-density filter pipe for groundwater control. Background Technology

[0002] Rainwater well pipes are a crucial component of urban drainage systems, primarily used for collecting and discharging rainwater. During urban construction, large amounts of hard surface coverings often exist, preventing rainwater from naturally infiltrating into the ground. To address this issue, rainwater is typically collected in rainwater well pipes and then transported through pipelines to designated drainage facilities. This approach not only prevents urban flooding caused by excessive rainfall but also effectively reduces the environmental impact of urban rainfall, thus protecting the urban ecological environment.

[0003] To prevent fine particles from the bottom layer from entering the well casing and causing blockages when constructing dewatering wells with a down-the-hole hammer drill, a mesh or nylon net of appropriate density needs to be wrapped around the dewatering well casing. Common mesh sizes are 60, 80, or 100 mesh, selected based on the stratum of the aquifer; the finer the bottom layer particles, the denser the mesh pores. This method requires first constructing the casing to the designed depth, then lowering the mesh-wrapped dewatering well casing into the casing, and finally removing the casing.

[0004] Due to the limited space in the tunnel, the casing construction process is more complicated, inconvenient, and has a longer construction period. In addition, casing construction cannot be carried out in limited spaces where down-the-hole hammer drilling rigs cannot be used. Utility Model Content

[0005] In order to simplify the drilling process and improve construction efficiency, this application provides a high-density filter pipe for groundwater control.

[0006] The high-density filter pipe for groundwater control provided in this application adopts the following technical solution:

[0007] A high-density filter pipe for groundwater control, comprising:

[0008] Well wall tube, which is installed inside the well pipe and fits against the inner wall of the well pipe, the well wall tube is made of two water filter steel plates rolled together, including an inner water filter steel plate and an outer water filter steel plate, and water permeable holes are opened on the inner and outer water filter steel plates;

[0009] A water filter screen is disposed between the inner water filter steel plate and the outer water filter steel plate.

[0010] By adopting the above technical solution, the well wall pipe is made of two filter steel plates (inner and outer filter steel plates), which increases the structural strength of the filter pipe and ensures a tight fit with the inner wall of the well pipe. This allows it to better withstand groundwater pressure and external forces, ensuring long-term stable operation of the filter pipe. At the same time, by opening permeable holes on the inner and outer filter steel plates, the size and distribution of the holes can be flexibly adjusted as needed, thereby controlling the inflow rate and flow of groundwater. A filter screen is set between the inner and outer filter steel plates, which can effectively intercept sand, impurities, etc. in the groundwater, preventing fine particles from entering the well pipe and causing blockage. In addition, the use of a three-layer filter well wall pipe can be used in conjunction with the drill bit, and hole formation can be completed in one go without the need for casing, simplifying the drilling process and improving construction efficiency.

[0011] Preferably, the thickness of the filter steel plate is set to 1.5-3mm, and this thickness can be adjusted accordingly based on the different hole depths.

[0012] By adopting the above technical solution, the thickness of the filter steel plate is set to 1.5-3mm. Steel plates within this thickness range can provide sufficient strength and rigidity, enabling the filter pipe to maintain its shape and structural stability during long-term use, making it less prone to deformation or damage, thus greatly increasing the service life of the filter pipe. At the same time, it can ensure that the permeable holes or cut gaps on the steel plate maintain stable size and shape, and will not deform due to the steel plate being too thin, thereby affecting the filtration effect and water permeability rate. This helps to maintain the uniformity and efficiency of groundwater filtration. The 1.5-3mm steel plate is relatively thin, making it easy to perform cutting, rolling and other processing operations, while also reducing the overall weight, facilitating transportation and installation, and reducing production costs and construction difficulty.

[0013] Preferably, the permeable holes are hexagonal.

[0014] By adopting the above technical solution, the permeable holes are made into hexagonal holes. Compared with traditional circular holes, this provides more pores per unit area, thereby increasing the contact area between groundwater and the filter pipe and improving filtration efficiency. The hexagonal structure helps guide water flow more evenly through the filter pipe, reducing turbulence and obstruction, allowing groundwater to pass through more smoothly and efficiently. At the same time, the hexagonal geometry can provide a certain structural support, enhancing the strength and stability of the filter pipe, helping to resist groundwater pressure and extending its service life.

[0015] Preferably, the density of the permeable holes meets the permeability coefficient requirements of the precipitation design, while ensuring that the overall structure of the filter pipe is stable and not easily deformed.

[0016] By adopting the above technical solution and adjusting the density of the permeable pores, the permeability coefficient required in the precipitation design can be accurately met, thereby achieving precise control of the groundwater infiltration rate. This ensures that the filter pipe meets the infiltration requirements while ensuring the structural stability to prevent deformation or damage during use, ensuring long-term safety, extending the service life of the filter pipe, reducing maintenance and replacement costs, and improving the overall reliability of the project.

[0017] Preferably, the filter screen is a dense steel wire mesh.

[0018] By adopting the above technical solution, the water filter screen is set as a dense steel wire mesh. The steel wire mesh has high strength and durability, and can withstand long-term scouring of groundwater without being easily damaged, thus extending the service life of the water filter pipe and reducing the frequency of maintenance and replacement. Compared with traditional filter materials, the dense steel wire mesh is easier to clean and maintain. Even in environments with a lot of ground particles or poor water quality, it can be easily cleaned to maintain the high efficiency of filtration performance.

[0019] Preferably, the density of the encrypted wire mesh can be adjusted according to the required particle size of the formation to meet the filtration requirements of different aquifers.

[0020] By adopting the above technical solution, the particle size of sand and impurities in different aquifers varies. The density of the steel wire mesh is determined according to the construction depth and geological environment, so that the filter pipe can adapt to the filtration requirements of different strata particle sizes. Whether it is a coarse sand layer or a fine sand layer, the best filtration effect can be achieved by adjusting the density of the steel wire mesh. This flexibility greatly improves the applicability of the filter pipe.

[0021] Preferably, the filter screen is welded and fixed to the inner filter steel plate and the outer filter steel plate.

[0022] By adopting the above technical solution, the filter screen and the inner and outer filter steel plates are welded and fixed, and the filter screen is tightly attached to the inner and outer filter steel plates, which prevents impurities from accumulating between the two layers of steel plates and improves the water filtration effect.

[0023] Preferably, the well wall pipe is divided into a water filter structure and a pipe structure, with the water filter structure located at one end of the well wall pipe.

[0024] By adopting the above technical solution, the water filtration structure is set at one end of the well wall pipe, which can be easily installed and replaced. By clearly dividing the two functional areas of water filtration and support, the high efficiency of water filtration can be ensured, while maintaining the stability and integrity of the well wall, thereby meeting the various technical requirements in the vacuum well drilling process.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] The well casing is made of two filter steel plates (inner and outer filter steel plates), which increases the structural strength of the filter pipe and ensures a tight fit with the inner wall of the well casing. This allows it to better withstand groundwater pressure and external forces, ensuring long-term stable operation of the filter pipe. At the same time, by opening permeable holes in the inner and outer filter steel plates, the size and distribution of the holes can be flexibly adjusted as needed, thereby controlling the inflow rate and flow of groundwater. A filter screen is installed between the inner and outer filter steel plates, which can effectively intercept sand, impurities, and other particles in the groundwater, preventing fine particles from entering the well casing and causing blockage. In addition, the use of a three-layer filter well casing can be used in conjunction with the drill bit, allowing for one-time hole drilling without the need for casing, simplifying drilling steps and improving construction efficiency.

[0027] Setting the thickness of the filter steel plate to 1.5-3mm provides sufficient strength and rigidity, allowing the filter pipe to maintain its shape and structural stability during long-term use, preventing deformation or damage and greatly increasing its service life. Simultaneously, it ensures that the permeable holes or cut slits on the steel plate maintain stable size and shape, preventing deformation due to excessively thin plates, which would affect filtration efficiency and permeability. This helps maintain the uniformity and efficiency of groundwater filtration. The relatively thin 1.5-3mm steel plate is easy to cut, roll, and process, while also reducing overall weight, facilitating transportation and installation, and lowering production costs and construction difficulty.

[0028] The filter screen is welded and fixed to the inner and outer filter steel plates, and the filter screen is tightly attached to the inner and outer filter steel plates to prevent impurities from accumulating between the two layers of steel plates and improve the water filtration effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a high-density filter pipe structure for groundwater control according to this application.

[0030] Figure 2 yes Figure 1 Enlarged view at point A.

[0031] Figure 3 This is a schematic diagram of the water filter steel plate structure.

[0032] Figure 4 This is a schematic diagram of a water filter screen.

[0033] Explanation of reference numerals in the attached drawings: 1. Well wall pipe; 11. Filter steel plate; 111. Inner filter steel plate; 112. Outer filter steel plate; 113. Water permeable hole; 2. Filter screen. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0035] This application discloses a high-density filter pipe for groundwater control. (Refer to...) Figure 1 , Figure 2 The groundwater control high-density filter pipe includes well wall pipe 1 and filter screen 2.

[0036] Reference Figure 2 The well casing 1 is made of two filter steel plates 11 of specific thicknesses, including an inner filter steel plate 111 and an outer filter steel plate 112. These steel plates are not only tough and durable but also have excellent water filtration performance. In this embodiment, the thickness of the steel plates is selected as 2mm. This thickness ensures both the strength of the well casing 1 and meets the requirements for one-time drilling. Depending on different geological and construction conditions, the thickness of the steel plates can be adjusted between 1.5mm and 3mm to adapt to different drilling depths and geological environments.

[0037] Reference Figure 1 Specifically, the well casing 1 is designed with both a filter and a pipe structure to meet the special structural requirements of vacuum wells. This design also allows the filter pipe to be perfectly matched with drill bits of the same specifications, thus simplifying the construction process and improving accuracy and efficiency.

[0038] Reference Figure 3 Water-permeable holes 113 are provided on the inner filter steel plate 111 and the outer filter steel plate 112 of the water-filtration structure. The water-permeable holes 113 are hexagonal. Compared with traditional circular holes, they can provide more pores per unit area, thereby increasing the contact area between groundwater and the filter pipe and improving filtration efficiency. The hexagonal structure helps to guide water flow more evenly through the filter pipe, reducing turbulence and stagnation, so that groundwater can pass through more smoothly and efficiently. At the same time, the hexagonal geometry can provide a certain structural support, enhance the strength and stability of the filter pipe, help resist groundwater pressure, and extend service life.

[0039] Reference Figure 2 , Figure 4 The filter mesh 2 is positioned between the inner filter steel plate 111 and the outer filter steel plate 112, and is welded and fixed to both plates. The filter mesh 2 is made of dense wire mesh, which not only enhances the structural stability of the filter pipe but also effectively filters fine particles from the formation, preventing well blockage. The density of the wire mesh is not constant but can be adjusted according to the specific formation conditions to ensure optimal filtration. For example, in aquifers with finer particles, a denser wire mesh can be used to better prevent the entry of fine particles.

[0040] The implementation principle of a high-density filter pipe for groundwater control in this application embodiment is as follows: The well wall pipe 1 is made of two filter steel plates 11 (inner and outer filter steel plates 111 and 112), which increases the structural strength of the filter pipe and ensures its tight fit with the inner wall of the well pipe. It can better withstand groundwater pressure and external forces, and ensure the long-term stable operation of the filter pipe. At the same time, by opening water permeable holes 113 on the inner and outer filter steel plates 112, the size and distribution of the holes can be flexibly adjusted as needed, thereby controlling the inflow speed and flow rate of groundwater. A filter screen 2 is set between the inner filter steel plate 111 and the outer filter steel plate 112. The filter screen 2 can effectively intercept sand, impurities and other particles in the groundwater, and prevent fine particles from entering the well pipe and causing blockage. At the same time, the use of a three-layer filter well wall pipe 1 can be used in conjunction with the drill bit. One-time hole formation does not require the use of casing, which simplifies the drilling process and improves construction efficiency.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-density filter pipe for groundwater control, characterized in that: include: Well wall pipe (1), the well wall pipe (1) is installed inside the well pipe and fits against the inner wall of the well pipe. The well wall pipe (1) is made of two filter steel plates (11), including an inner filter steel plate (111) and an outer filter steel plate (112). Water permeable holes (113) are opened on the inner and outer filter steel plates (112). A water filter screen (2) is disposed between the inner water filter steel plate (111) and the outer water filter steel plate (112).

2. The high-density filter pipe for groundwater control according to claim 1, characterized in that: The thickness of the filter steel plate (11) is set to 1.5-3mm, and this thickness can be adjusted according to the different hole depths.

3. The high-density filter pipe for groundwater control according to claim 1, characterized in that: The permeable holes (113) are hexagonal.

4. The high-density filter pipe for groundwater control according to claim 3, characterized in that: The density of the permeable holes (113) meets the permeability coefficient requirements of the precipitation design, while ensuring that the overall structure of the filter pipe is stable and not easily deformed.

5. The high-density filter pipe for groundwater control according to claim 1, characterized in that: The filter screen (2) is a dense steel wire mesh.

6. The high-density filter pipe for groundwater control according to claim 5, characterized in that: The density of the encrypted wire mesh can be adjusted according to the required particle size in the formation to meet the filtration requirements of different aquifers.

7. The high-density filter pipe for groundwater control according to claim 6, characterized in that: The filter screen (2) is welded and fixed to the inner filter steel plate (111) and the outer filter steel plate (112).

8. The high-density filter pipe for groundwater control according to claim 1, characterized in that: The well wall pipe (1) is divided into a water filter structure and a pipeline structure, with the water filter structure located at one end of the well wall pipe (1).

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