Drainage current well transformation system

Abstract

The utility model relates to the technical field of municipal drainage, in particular to a drainage current well transformation system which comprises a current well and a newly-built open caisson coaxial with the current well, the diameter of the newly-built open caisson is larger than that of the current well, the current well is located at the bottom of the newly-built open caisson, and a current drainage pipe is arranged at the bottom of the current well. The well wall of the newly-built open caisson is provided with a newly-built drainage water inlet pipe, the well bottom of the newly-built open caisson is fixedly connected with reinforcing ribs, and the well wall of the current well extends from the well bottom of the newly-built open caisson to the top of the newly-built open caisson, so that height difference is formed between the top of the well wall of the current well and the well bottom of the newly-built open According to the technical scheme, the engineering cost and the construction difficulty are reduced.

Description

Technical Field

[0001] This utility model relates to the field of municipal drainage technology, and in particular to a drainage well renovation system. Background Technology

[0002] The inspection well is equipped with a drainage outlet pipe and a drainage inlet pipe, which are collectively referred to as drainage pipes. In the traditional connection between drainage pipes and inspection wells, in order to avoid impacting the ground environment, the pipe jacking construction method is usually adopted. The existing inspection wells were constructed in the early days by excavating along the road, and their size only meets the requirements for daily inspection, maintenance and operation water passage. However, pipe jacking construction requires a larger size inspection well. The existing inspection wells cannot accommodate the pipe jacking construction equipment. Therefore, when connecting the new drainage pipes to the existing inspection wells, it is necessary to completely destroy the existing inspection wells and the drainage outlet and drainage inlet pipes at the bottom of the inspection wells, and build a large-sized inspection well in the original location to accommodate the pipe jacking construction equipment and meet the requirements of pipe jacking construction connection.

[0003] This construction method damages the existing inspection wells and drainage pipes. Furthermore, during the construction process, a large amount of sewage from residents can only be pumped into the sewage treatment plant. In addition, after the construction of the new well is completed, the connection between the old drainage pipe and the new well needs to be considered. Improper operation may lead to leakage and other problems, which greatly increases the project cost and construction difficulty.

[0004] Therefore, it is necessary to propose a system for modifying existing drainage wells to reduce project costs and construction difficulties. Utility Model Content

[0005] The purpose of this utility model is to solve the problems of high engineering cost and construction difficulty in the renovation of existing inspection wells, and to provide a drainage well renovation system.

[0006] The technical solution of this utility model is:

[0007] A drainage well renovation system includes an existing well and a newly constructed caisson coaxial with the existing well. The diameter of the newly constructed caisson is larger than that of the existing well. The existing well is located at the bottom of the newly constructed caisson. An existing drainage pipe is installed at the bottom of the existing well, and a new drainage inlet pipe is installed on the wall of the newly constructed caisson. A grating is installed on the new drainage inlet pipe. Reinforcing ribs are fixedly connected to the bottom of the newly constructed caisson. The wall of the existing well extends from the bottom of the newly constructed caisson to the top of the newly constructed caisson, thereby creating a height difference between the top of the wall of the existing well and the bottom of the newly constructed caisson. Vertically placed foundation treatment piles are installed at the bottom of the newly constructed caisson. The foundation treatment piles are arranged in a ring around the existing well with the axis of the newly constructed caisson as the center. An overflow outlet is installed on the wall of the newly constructed caisson, and the overflow outlet is positioned opposite to the new drainage inlet pipe.

[0008] Furthermore, the bottom of the newly built caisson is sealed with concrete to ensure the structural strength of the bottom of the caisson.

[0009] Furthermore, the existing well wall and the bottom of the newly built caisson are integrated by concrete pouring to enhance the structural strength of the existing well wall.

[0010] Furthermore, a cushion layer is provided around the foundation treatment piles. The cushion layer can fill the space and gaps between the foundation treatment piles, thereby improving the service life and structural strength of the foundation treatment piles.

[0011] Furthermore, the grille is a basket grille, which is located inside the newly built caisson and is raised and lowered within the caisson via guide rails.

[0012] This utility model discloses a drainage well renovation system. The newly constructed well can renovate and protect the existing well. The new well encompasses the existing well, further extending its service life. The new drainage inlet pipe is located on the well wall of the new well. Due to the height difference between the top of the existing well wall and the bottom of the new well, sewage discharged through the new drainage inlet pipe falls freely to the bottom of the new well, accumulating there. When the accumulated sewage overflows the top of the existing well wall, it overflows and slowly flows down the existing well wall to the bottom, preventing sewage from directly falling from the new drainage inlet pipe and scouring the bottom of the existing well, thus avoiding sewage damage to the existing well. The existing well bottom is protected from erosion damage, extending its service life. Additionally, when there is too much water in the well, surface flooding can occur. The overflow outlet is designed to drain excess water to rivers or other drainage points. The grating effectively filters garbage and other debris from the sewage, preventing it from entering the river through the overflow outlet and polluting it. The reinforcing ribs increase the structural strength of the new well walls and bottom, while also mitigating the impact of falling sewage on the well bottom, reducing damage. The foundation piles provide support to the new well walls, extending its service life. Attached Figure Description

[0013] Figure 1 This utility model is three-dimensional. Figure 1 ;

[0014] Figure 2 This utility model is three-dimensional. Figure 2 ;

[0015] Figure 3 This is the front view of the present utility model;

[0016] Figure 4 This is a cross-sectional view of the present invention.

[0017] Attached reference numerals: 1. Existing well; 2. Newly constructed caisson; 3. Existing drainage pipe; 4. Existing well wall; 5. Newly constructed caisson bottom; 6. Overflow outlet; 7. Reinforcing rib; 8. Existing drainage inlet pipe; 9. Existing drainage outlet pipe; 10. Grating; 11. Foundation treatment pile; 12. Newly constructed drainage inlet pipe; 17. Existing well bottom; 18. Newly constructed caisson wall. Detailed Implementation

[0018] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0019] Example 1:

[0020] like Figure 1 and Figure 2 As shown, this embodiment provides a drainage well renovation system, including an existing well 1 and a newly constructed well 2 coaxial with the existing well 1. The diameter of the newly constructed well 2 is larger than that of the existing well 1. The existing well 1 is located at the bottom 5 of the newly constructed well. An existing drainage pipe 3 is provided at the bottom 17 of the existing well, and a new drainage inlet pipe 12 is provided on the wall 18 of the newly constructed well. A reinforcing rib 7 is fixedly connected to the bottom 5 of the newly constructed well. The wall 4 of the existing well extends from the bottom 5 of the newly constructed well to the top of the newly constructed well 2, thereby creating a height difference between the top of the wall 4 of the existing well and the bottom 5 of the newly constructed well. Figure 3 As shown, the bottom 5 of the newly built caisson is equipped with vertically placed foundation treatment piles 11. The foundation treatment piles 11 are arranged in a ring around the existing well 1 with the axis of the newly built caisson 2 as the center. An overflow port 6 is opened on the wall 18 of the newly built caisson. The overflow port 6 is set opposite to the newly built drainage inlet pipe 12. When the foundation of the bottom 5 of the newly built caisson is built, it avoids the existing drainage pipe 3. The foundation is built by avoiding the existing drainage pipe 3, which can avoid damaging the existing drainage pipe 3, so that the existing drainage is preserved in its original state, which is convenient for subsequent connection with the newly built drainage inlet pipe 12, avoiding unnecessary trouble, saving manpower and material resources, reducing project cost and construction difficulty. Preferably, the foundation treatment piles 11 are reinforced concrete structures, but they can also be pine piles.

[0021] like Figure 4 As shown, the existing well 1 is an original inspection well on the ground. The existing drainage pipe 3 includes an existing drainage inlet pipe 8 and an existing drainage outlet pipe 9. Both the existing drainage inlet pipe 8 and the existing drainage outlet pipe 9 are original drainage pipes within the existing well 1. The vertical height difference between the newly constructed drainage inlet pipe 12 and the existing drainage outlet pipe 9 is between 1500-5500 mm. Specifically, the elevation of the bottom 5 of the newly constructed well and the demolition range of the existing well wall 4 are determined based on the height difference between the newly constructed drainage inlet pipe 12 and the existing drainage outlet pipe 9. For details, please refer to the following:

[0022] 1. When the vertical height difference between the newly built drainage inlet pipe 12 and the existing drainage inlet pipe 8 is 1500-2500mm, the bottom 5 of the newly built caisson should be 500m above the top of the existing drainage outlet pipe 9, and the demolition range of the existing well wall 4 is from the ground to 1000m above the top of the existing drainage outlet pipe 9.

[0023] 2. When the vertical height difference between the newly built drainage inlet pipe 12 and the existing drainage inlet pipe 8 is 2500-5000mm, the bottom 5 of the newly built caisson should be 1000m above the top of the existing drainage outlet pipe 9, and the demolition range of the existing well wall 4 is from the ground to 1500m above the top of the existing drainage outlet pipe 9.

[0024] 3. When the vertical height difference between the newly built drainage inlet pipe 12 and the existing drainage inlet pipe 8 is 5000-5500mm, the bottom 5 of the newly built caisson should be 1500m above the top of the existing drainage outlet pipe 9. The demolition range of the existing well wall 4 is from the ground to 2000m above the top of the existing drainage outlet pipe 9. The existing drainage inlet pipe 8 and the existing drainage outlet pipe 9 are both constructed without demolition and reused, which can greatly reduce the construction difficulty and project cost and improve work efficiency. In addition, the vertical height difference between the newly built drainage inlet pipe 12 and the existing drainage outlet pipe 9 saves the construction cost of the newly built drainage inlet pipe 12 in terms of depth.

[0025] Preferably, the bottom of the newly built caisson 5 is sealed with concrete to ensure the structural strength of the bottom of the newly built caisson 5.

[0026] Preferably, the existing well wall 4 and the bottom of the newly built caisson 5 are integrated by concrete pouring to enhance the structural strength of the existing well wall 4.

[0027] Preferably, a cushion layer is provided around the foundation treatment pile 11. The cushion layer can fill the space and gaps between the foundation treatment piles 11, improve the service life and structural strength of the foundation treatment piles 11, and the cushion layer can be filled with sand, gravel, concrete or other materials.

[0028] Preferably, the grille 10 is a basket grille, which is located inside the newly built caisson 2 and is raised and lowered within the newly built caisson 2 via guide rails.

[0029] The construction method of this scheme includes the following steps: (1) Excavate a new caisson 2 coaxial with the existing caisson 1 from the top of the existing caisson 1 to the middle of the existing caisson 1. The diameter of the new caisson 2 is larger than the diameter of the existing caisson 1. The vertical distance between the bottom 5 of the new caisson caisson and the existing drainage pipe 3 is not less than 500mm; (2) Destroy the existing caisson wall 4 between 1000mm above the existing drainage pipe 3 and the ground; (3) Build a foundation at the bottom 5 of the new caisson caisson. The foundation can be paved with stone bricks and then shaped with concrete. Then, without disturbing the existing drainage pipe 3, seal the bottom 5 of the new caisson caisson with concrete and use concrete to pour the existing caisson wall 4 and the bottom 5 of the new caisson caisson into one piece; (4) Place a pipe jacking receiving device in the new caisson 2 and receive the new drainage inlet pipe 12 in the new caisson caisson 2; (5) After sealing the bottom 5 of the new caisson caisson with concrete, arrange reinforcing bars 7 at the bottom 5 of the new caisson caisson.

[0030] When using it, on the one hand, such as Figure 1 As shown, this invention involves setting up a large-sized caisson outside the existing well 1, thereby destroying the upper part of the existing well 1 to create space for pipe jacking construction and smoothly accommodate the pipe jacking equipment. Retaining the lower part of the existing well 1 avoids potential leakage problems when the existing drainage pipe 3 is connected to the newly built caisson 2, and also reduces the workload of the construction process, which not only improves the construction speed but also reduces the construction cost. The modification method of this inspection well is a non-discharge connection, which replaces the traditional water cut-off construction. Therefore, it will not affect the discharge of residents' sewage during the construction process, so there is no need to take pumping measures, which will not affect the normal life and production of residents, save land, reduce investment, and provide the construction unit with an optimal solution.

[0031] On the other hand, such as Figure 1 and Figure 2As shown, the newly constructed caisson 2 can renovate and protect the existing caisson 1. The newly constructed caisson 2 includes the existing caisson 1 inside, further extending its service life. The newly constructed drainage inlet pipe 12 is located on the wall of the newly constructed caisson 2. Due to the height difference between the top of the existing caisson wall 4 and the bottom 5 of the newly constructed caisson, sewage discharged through the newly constructed drainage inlet pipe 12 falls freely to the bottom 5 of the newly constructed caisson and accumulates. When the accumulated sewage overflows the top of the existing caisson wall 4, it overflows and slowly flows along the existing caisson wall 4 to the bottom 17 of the existing caisson. This prevents sewage from falling directly from the newly constructed drainage inlet pipe 12 and scouring the bottom 17 of the existing caisson, thus avoiding scouring and damage to the bottom 17 of the existing caisson, protecting the existing caisson 1, and extending its service life. The screen 10 filters solid impurities and suspended solids in the water flow through its gaps. When water flows through the screen, solid particles are intercepted on the screen, while clean water flows out through the gaps. This physical filtration process ensures the cleanliness of the water flow. It prevents pollutants from entering the newly built well 2 through the newly constructed drainage inlet pipe 12. An automatic control system is also included, comprising a weight sensor and an alarm. The weight sensor detects the weight of debris within the screen 10 in real time. When the weight exceeds a preset value, it sends a signal to the alarm, notifying staff to clean the debris from the screen 10. The system can automatically adjust based on factors such as wastewater flow rate, solid particle size, and concentration to ensure optimal screen efficiency and interception effect. Since the weight sensor and alarm are relatively mature devices, those skilled in the art can refer to their instruction manuals to select the appropriate model and installation location; further details are not provided in this manual or its accompanying drawings. Additionally, when there is too much water in the well, surface flooding may occur. The overflow outlet 6 serves to drain excess water from the well to external drainage points such as rivers. The screen 10's interception function also prevents pollutants from entering the river through the overflow outlet 6 and polluting it. The reinforcing rib 7 can increase the structural strength of the newly built caisson wall 18 and the newly built caisson bottom 5, and at the same time, it can reduce the impact force on the newly built caisson bottom 5 when sewage falls to a certain extent, thus reducing the damage to the newly built caisson bottom 5. The grid 10 has a box-shaped mesh structure. The grid 10 adopts existing equipment purchased on the market. The specific model and size can be selected by those skilled in the art according to the actual situation, and will not be described in detail here.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A system for retrofitting existing drainage wells, characterized in that: Includes an existing well (1) and a newly built caisson (2) coaxial with the existing well (1). The diameter of the newly built caisson (2) is larger than that of the existing well (1). The existing well (1) is located at the bottom (5) of the newly built caisson. An existing drainage pipe (3) is opened at the bottom (17) of the existing well. A new drainage inlet pipe (12) is opened on the wall (18) of the newly built caisson. A grid (10) is installed on the new drainage inlet pipe (12). A reinforcing rib (7) is fixedly connected to the bottom (5) of the newly built caisson. The wall (4) of the existing well extends from the bottom (5) of the newly built caisson to the top of the newly built caisson (2), thereby forming a height difference between the top of the wall (4) of the existing well and the bottom (5) of the newly built caisson. The bottom (5) of the newly built caisson is equipped with vertically placed foundation treatment piles (11), which are arranged in a ring around the existing caisson (1) with the axis of the newly built caisson (2) as the center. An overflow port (6) is provided on the wall (18) of the newly built caisson, and the overflow port (6) is set opposite to the newly built drainage inlet pipe (12).

2. The existing drainage well renovation system according to claim 1, characterized in that: The bottom of the newly built caisson (5) is sealed with concrete.

3. The existing drainage well renovation system according to claim 1, characterized in that: The existing well wall (4) and the bottom of the newly built caisson (5) are integrated by concrete pouring.

4. The existing drainage well renovation system according to claim 1, characterized in that: A cushion layer is provided around the foundation treatment pile (11).

5. The existing drainage well renovation system according to claim 1, characterized in that: The existing drainage pipe (3) includes the existing drainage inlet pipe (8) and the existing drainage outlet pipe (9).

6. The existing drainage well renovation system according to claim 1, characterized in that: The grid (10) is a basket grid, which is located inside the newly built caisson (2) and is raised and lowered inside the newly built caisson (2) via guide rails.

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