Drainage and drainage integrated structure of barrel well

Abstract

The utility model relates to a barrel well dewatering and drainage integrated structure which comprises a well barrel, a support used for supporting and fixing the position of the well barrel, a filter screen, a water pumping pipe and a water pump, the filter screen wraps the outer wall face or the inner wall face of the well barrel, one end of the water pumping pipe is connected with a water outlet of the water pump, and the other end of the water pumping pipe extends out of the well barrel. A water through hole is formed in the wall face of the well barrel. The dewatering and drainage integrated structure is ingenious, the problems that a traditional tube well foundation pit dewatering and drainage process is complex and construction is difficult can be solved, meanwhile, the drainage efficiency of foundation pit dewatering can be improved, the safety and stability of construction are guaranteed, and then the use experience of constructors is enhanced; and popularization and application of the barrel well dewatering and drainage integrated structure in the technical field of foundation pit engineering dewatering and drainage are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of dewatering and drainage technology in foundation pit engineering, specifically an integrated structure for dewatering and drainage of wells. Background Technology

[0002] With the development of the construction industry and the increasing utilization of land resources, high-rise buildings are becoming more and more common, leading to a rise in deep foundation pit projects. Dewatering and drainage in foundation pit projects have always been a key factor affecting the safety of underground engineering foundation pits. Currently, the main dewatering methods for foundation pits in China are single methods such as well-drainage dewatering and localized lightweight wellpoint dewatering. During the excavation process, safety problems such as landslides, collapses, and uneven geological settlement caused by dewatering frequently occur. Therefore, effectively preventing the impact of groundwater on the safety of foundation pit projects is of paramount importance in the construction control of foundation pit projects.

[0003] Traditional dewatering methods primarily employ dewatering wells, which are engineering facilities used to lower the groundwater level, typically in underground construction or deep foundation pit projects. Their main purpose is to reduce water pressure around the foundation pit or construction area by extracting groundwater, thereby preventing adverse effects from rising groundwater levels, such as foundation pit collapse, structural instability, or water damage. This construction process usually begins when the groundwater level drops to the design construction level. However, this method is inflexible when dealing with individual groundwater issues and is often used to create a ring network of dewatering systems around the building. Furthermore, the complex construction procedures, low drainage efficiency, and high construction costs undoubtedly increase the workload of construction workers, negatively impacting their experience and hindering the widespread adoption and application of this method in the market. Utility Model Content

[0004] In order to overcome the defects in the prior art, the purpose of this utility model is to provide an integrated dewatering and drainage structure for wells. This integrated dewatering and drainage structure is ingenious and can solve the problems of complex procedures and difficult construction in traditional well foundation pit dewatering and drainage. At the same time, it can improve the drainage efficiency of foundation pit dewatering, ensure the safety and stability of construction, and enhance the user experience of construction personnel. It is conducive to the promotion and application of the above-mentioned integrated dewatering and drainage structure for wells in the field of foundation pit engineering dewatering and drainage technology.

[0005] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: an integrated well-drainage structure, including a well bucket, a bracket for supporting and fixing the position of the well bucket, a filter screen, a water pump, and a water pump. The filter screen covers the outer or inner wall of the well bucket. One end of the water pump is connected to the outlet of the water pump, and the other end of the water pump extends to the outside of the well bucket. Water passage holes are formed on the wall of the well bucket.

[0006] As a preferred embodiment of this utility model, the well barrel includes an upper part, a middle part, and a lower part, which are integrally formed; the upper part and the lower part are both solid structures, and the water passage is formed in the middle part of the well barrel.

[0007] As a preferred embodiment of this utility model, there are multiple water passage holes, and adjacent water passage holes are equidistantly arranged.

[0008] As a preferred embodiment of this utility model, the water pumping pipe includes two parts: a rubber steel wire hose and a PE pipe. The rubber steel wire hose is connected to the water pump, one end of the PE pipe is connected to the rubber steel wire hose, and the other end of the PE pipe is introduced into the upper part of the foundation pit to the three-stage sedimentation tank, so that the water in the well barrel can be discharged.

[0009] As a preferred embodiment of this utility model, a reserved space for placing a rubber steel wire hose is formed at the opening of the well barrel.

[0010] As a preferred embodiment of this utility model, the reserved position has a square cross-section, and the depth of the reserved position is adapted to the outer diameter of the rubber steel wire hose.

[0011] As a preferred embodiment of this utility model, the well barrel is welded from steel plates into a barrel shape.

[0012] As a preferred embodiment of this utility model, the water pump is a submersible pump.

[0013] As a preferred embodiment of this utility model, the support includes legs, which are fixed to the wall of the well barrel by welding, and the three legs are distributed in a triangular pattern.

[0014] As a preferred embodiment of this utility model, a reinforcing crossbar is provided between two adjacent legs.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The integrated well-drainage structure of this utility model is simple and ingenious, and easy to manufacture. By setting up a well bucket, a support, a filter screen, a water pump, and a water suction pump, the support is used to support and fix the well bucket, thereby ensuring the stability of the well bucket during installation and use. Then, through the filter screen and the water passage holes opened on the well bucket wall, water in the sump can enter the well bucket, collecting water and filtering the water in the foundation pit at the same time. Then, the water pump and the water suction pipe can extract the accumulated water, which can effectively improve the drainage efficiency of foundation pit dewatering, ensure the safety and stability of construction, and enhance the user experience of construction personnel. This is conducive to the promotion and application of the above-mentioned integrated well-drainage structure in the field of foundation pit engineering dewatering and drainage technology. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the barrel well in one of the integrated barrel well dewatering and drainage structures in the embodiment;

[0017] Figure 2 This is a schematic diagram of the barrel well in one of the integrated barrel well dewatering and drainage structures in the embodiment;

[0018] Figure 3 This is a schematic diagram of an integrated well drainage and dewatering structure in one embodiment.

[0019] Reference numerals in the attached drawings: 1. Well barrel; 1-1. Upper part of well barrel; 1-2. Middle part of well barrel; 1-3. Lower part of well barrel; 1-4. Water passage hole; 1-5. Reserved position; 2. Support; 2-1. Support leg; 2-2. Reinforcing crossbar; 3. Pumping pipe; 4. Water pump. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1 to 3As shown, an integrated well drainage structure mainly consists of a well barrel 1, a support frame 2 for supporting and fixing the well barrel 1, a filter screen, a pumping pipe 3, and a water pump. To ensure the stability of the well barrel 1 during installation and use, the support frame 2 consists of three legs 2-1, which are fixed to the wall of the well barrel 1 by welding. The three legs 2-1 are arranged in a triangle, forming a triangular support. To further enhance the structural strength of the support frame 2, reinforcing crossbars 2-2 are added between adjacent legs 2-1. Similarly, the three reinforcing crossbars 2-2 are also arranged in a triangle, further ensuring the structural strength of the well barrel 1 while ensuring its stability during use. The bottom of the legs 2-1 is located outside the bottom of the well barrel 1, allowing the legs 2-1 to be inserted into the bottom construction area, further ensuring the stability of the well barrel 1 during use.

[0024] In this invention, a filter screen is wrapped around the outer or inner wall of the well barrel 1 to filter the accumulated water in the sump, reducing the probability of impurities entering the well barrel 1 and thus reducing the probability of blockage of the pumping pipe and water pump. This effectively improves the drainage efficiency of the foundation pit dewatering and ensures the safety and stability of construction. Specifically, one end of the pumping pipe 3 is connected to the outlet of the water pump 4, and the other end of the pumping pipe 3 extends outside the well barrel 1 to discharge the water inside the well barrel 1. To further increase the rate at which water from the sump enters the well barrel 1, multiple water passage holes 1-4 are formed on the wall of the well barrel 1. To ensure uniform water intake and reduce the impact of water pressure on the well barrel 1, thereby ensuring the service life of the well barrel 1, adjacent water passage holes 1-4 are equidistantly spaced in this invention.

[0025] To prevent water from the sump from entering the well bucket 1 from the top or bottom without passing through the water inlet 1-4 and the filter screen, and to avoid bringing impurities from the sump into the well bucket 1 during this process, this invention designs the well bucket 1 as having an upper part 1-1, a middle part 1-2, and a lower part 1-3, all integrally formed. This integrally formed well bucket 1 provides better structural stability and integrity because it has no seams or welds, which could be weaknesses in traditional structures. Furthermore, the integrally formed well bucket 1 better prevents water seepage or leakage because it reduces the number of seams. Some seams at the joints may become sources of leakage; the one-piece molded well barrel 1 simplifies the construction process because it reduces the amount of on-site assembly and welding work, thereby speeding up the construction process; since there are no seams or welding points, the one-piece molded well barrel 1 is easier to maintain, reducing maintenance problems caused by seam aging or welding point damage; the one-piece molded well barrel 1 generally has a longer service life because it reduces potential failures caused by seam or welding point damage; the one-piece molded well barrel 1 is cleaner and more uniform in appearance, without seams or welding marks, improving the overall aesthetics; the one-piece molded well barrel 1 can also be customized according to different geological conditions and usage requirements to adapt to specific environmental and functional requirements. To prevent impurities in the sump from entering the well barrel 1, the upper part 1-1 and the lower part 1-3 of the well barrel are both solid structures, and the water passage 1-4 is formed at the middle part 1-2 of the well barrel. This arrangement also ensures the structural strength of the well barrel 1 and reduces the probability of its damage.

[0026] To facilitate connection and reduce connection difficulty, and to meet application requirements, the water pumping pipe of this invention comprises two parts: a rubber-steel wire hose and a PE pipe. A reserved position 1-5 is formed at the opening of the well barrel 1 for placing the rubber-steel wire hose, primarily to reduce the probability of displacement. The reserved position 1-5 has a square cross-section, but other shapes are also possible and not limited here. The rubber-steel wire hose is installed within the reserved position 1-5 and extends to the water pump 4 inside the well barrel 1, where the water pump 4 draws water from the well barrel 1. Rubber-steel wire hoses possess excellent flexibility and elasticity due to their internal steel wire reinforcement layer, allowing them to bend without easily breaking, making them suitable for applications requiring frequent movement or bending. PE pipes, on the other hand, exhibit high wear resistance and chemical stability due to their material properties, making them suitable for long-distance transport and fixed installation. Rubber-steel wire hoses can also withstand certain pressures, making them suitable for applications requiring pressure transport. PE pipes can be designed with different wall thicknesses to withstand higher working pressures. The combined use of these two materials in the pumping pipe 3 allows for customization according to different application needs, effectively ensuring the performance and service life of the pumping pipe 3. Specifically, the rubber-steel wire hose is installed on the aforementioned well 1 and connected to the water pump 4. One end of the PE pipe is connected to the rubber-steel wire hose, and the other end of the PE pipe is introduced into the upper part of the pit to the tertiary sedimentation tank, finally draining the water from the aforementioned well 1. The tertiary sedimentation tank here refers to a facility used for wastewater treatment that removes suspended solids and other pollutants from water through three consecutive sedimentation stages. The design of such a sedimentation tank typically includes the following parts: Primary sedimentation zone: This is the first stage of the sedimentation tank, primarily aimed at removing larger suspended particles. After water enters the sedimentation tank, larger particles begin to settle due to gravity. Secondary sedimentation zone: Following the primary sedimentation zone, water flows into the second sedimentation zone. Here, the water flow velocity is further reduced, which helps finer suspended particles settle. Tertiary sedimentation zone: In the final stage, the water flow velocity is further slowed to ensure that even smaller particles settle to the bottom. This stage may also include chemical treatment to help remove more difficult-to-settle substances. Sludge collection zone: At the bottom of each sedimentation zone, there is usually a sludge collection zone to collect the deposited solid waste. This sludge is then periodically cleaned and treated. Clear water discharge zone: After tertiary sedimentation, the supernatant (i.e., relatively clean water) is discharged from the top or side of the sedimentation tank for further treatment or direct discharge. The design of tertiary sedimentation tanks can be adjusted according to different needs, such as treatment capacity, tank size, and water flow velocity. They are widely used in industrial wastewater treatment, municipal sewage treatment plants, and other applications requiring the removal of suspended solids. This multi-stage sedimentation process effectively improves water clarity and quality, reducing the burden on subsequent treatment processes.

[0027] To secure the filter screen in place, it needs to be tied up during use to reduce the probability of displacement. In this invention, the filter screen is fastened to the wall of the well barrel 1 using steel wire ropes and other components. The water pump 4 can be hoisted into the middle of the well barrel 1 using the same steel wire ropes. During this process, the position of the water pump 4 can be adjusted according to the water level in the well barrel 1. Compared to placing the water pump 4 directly at the bottom of the well barrel 1, the method of setting up the water pump 4 in this invention can ensure the pumping efficiency of the water pump 4 while reducing the impact of water pressure on the water pump 4, thereby ensuring the service life of the water pump 4 and reducing operating costs.

[0028] The aforementioned well barrel 1 is welded from steel plates into a barrel shape, primarily because steel plates possess high strength and rigidity. Welding them into a barrel shape provides stable structural support, ensuring the well barrel's stability underground or under pressure. The welded steel plate well barrel is corrosion-resistant and wear-resistant, enabling long-term use in harsh environments and reducing the frequency of maintenance and replacement. Welding creates sealed joints, reducing the seepage of groundwater or other liquids and ensuring a stable internal environment. Steel plates can be cut into different shapes and sizes as needed and then welded into the required barrel structure to adapt to different well depths and diameter requirements. The welded steel plate well barrel can withstand significant vertical and horizontal loads, making it suitable for deep wells or high-load applications.

[0029] The water pump 4 in this invention can be a submersible pump. The submersible pump can be directly installed inside the well casing 1 without the need for an additional suction pipe, simplifying the installation process. Furthermore, because the submersible pump is underwater, the risk of air intake is low, which helps maintain efficient pump operation. Submersible pumps are particularly suitable for deep well pumping because they can be placed directly underwater, reducing the need for long suction pipes and lowering construction costs.

[0030] The construction method of the integrated well dewatering and drainage structure of this utility model includes the following steps.

[0031] S1. Construction preparation: Prepare hoisting equipment, well barrel 1, supports and fixing brackets for well barrel 1, filter screen, suction pipe, and water pump in advance to reduce waiting time and improve construction efficiency. During this process, the filter screen and suction pipe can also be placed at well barrel 1 first.

[0032] S2. Excavate a water collection pit for placing the well barrel 1, and pump water from the water collection pit. The size of the water collection pit should be compatible with the size of the well barrel 1, but slightly larger than the size of the well barrel 1 to prevent the well barrel 1 from being directly inserted into the water collection pit.

[0033] S3, well barrel 1 is pre-embedded. Since the foundation base is composed of sand and gravel and the water level is too deep, it will cause the hole to collapse. After the water sump is excavated, well barrel 1 will be quickly hoisted into the water sump using hoisting tools.

[0034] S4. Place the water pump, that is, place the submersible pump inside the well barrel 1, and use the submersible pump to pump out the water accumulated in the well barrel 1.

[0035] S5, after installation, conduct a water pumping test and observe the water level changes in well 1;

[0036] S6. After the water level in well 1 reaches the bottom of the sump pit, backfill the bottom of the sump pit and the area around well 1 with filter material. The filter material is gravel with a particle size of about 3mm that does not contain impurities. Fill it evenly around the outer wall of well 1 to ensure the smooth flow of water in the soil layer and prevent the inflow of silt and sand, which would cause the water pump to be blocked and the rainfall to be reduced.

[0037] S7. On-site commissioning.

[0038] Before installing well casing 1, control its bottom elevation. After installation, remeasure the top elevation of well casing 1. These two steps are crucial for ensuring the accuracy and safety of the installation. Pre-installation bottom elevation control: This involves determining the height of the bottom of well casing 1 relative to a reference point (such as the ground or building baseline). This height is usually specified in the design drawings or construction specifications. Controlling the bottom elevation ensures that well casing 1 is installed in the correct position, meeting design requirements and functional requirements. Post-installation top elevation remeasurement: After installation, the height of the top of well casing 1 relative to the reference point needs to be remeasured to verify the accuracy of the installation. Remeasuring the top elevation ensures that the verticality and height of well casing 1 meet design requirements, avoiding structural problems or inconvenience caused by installation errors. The importance of these two steps lies in ensuring that the installation position and height of well casing 1 meet design and safety standards, preventing structural instability or functional failure due to installation errors, and providing accurate reference data for subsequent construction or use. During construction, a level or other measuring tools can be used to measure and remeasure the elevation.

[0039] During pumping, ensure the pump is located inside well 1 and secured to the well surface with steel wire ropes. Simultaneously, adjust the automatic control device according to the water volume to ensure pumping and stopping times are synchronized to meet construction needs.

[0040] During the precipitation process, precipitation data, including water level changes and pumping volume, are recorded. Simultaneously, ground settlement observation points are set up around the perimeter of the foundation pit within the precipitation area to monitor the settlement in sync with the precipitation level and plot the ST curve to understand the precipitation process.

[0041] Specific construction projects require specific analysis, and specific implementation plans are based on specific application scenarios of this utility model as examples:

[0042] The groundwater in this project site is unconfined phreatic water buried in Quaternary sand and gravel layers. The measured stable groundwater level is approximately 6.2–7.3 m below the natural surface, with a relative elevation of 492.70–493.99 m and an average relative elevation of approximately 493.35 m. The groundwater level varies seasonally, with an annual fluctuation of approximately 2–3 m. Based on existing dewatering experience at similar sites, a permeability coefficient of k = 60–100 m / d is recommended for this site, calculated using the following formula:

[0043] (1) Calculation of water inflow:

[0044]

[0045] Where Q is the water inflow rate; K is the soil permeability coefficient;

[0046] H, aquifer depth;

[0047] S, maximum depth of foundation pit excavation;

[0048] R, radius of influence of pumping;

[0049] X, the imaginary radius (related to the area of ​​the foundation pit).

[0050] (2) Calculation of water output from a single well:

[0051]

[0052] in,

[0053] S, parameters related to certain characteristics of the well;

[0054] H. Drawdown;

[0055] K, permeability coefficient.

[0056] (3) Determining the number of well points:

[0057] Due to the special nature of this project, which involves two buildings with deep foundation pits and a sump pit connected to the elevator shaft, only one facility needs to be installed in each building based on the calculated water inflow and site conditions, ensuring uniform water removal and meeting construction requirements.

[0058] (3.1) Selection of well type and material:

[0059] The well type includes a barrel shape welded from 2mm thick steel plates, with a diameter of 1000mm and a length of 1.5m, which must meet certain pressure resistance requirements. A 3*3mm spaced, 3*3mm sized hole is provided in the middle 90mm section of the well barrel. A steel triangular support is welded inside the barrel to enhance its stability. A steel wire mesh should be used to cover the outside of the holes and securely tied. A 200*200mm opening is made at the top of the well for placing the pumping pipe.

[0060] (3.2) Selection of suction pipe and water pump:

[0061] The front section of the suction pipe uses a rubber-coated steel wire hose with a diameter of 150mm, and the rear section uses a PE pipe with a diameter of 150mm. For the water pump, a submersible pump with a pumping capacity of 65m³ per hour is used.

[0062] (4) Other considerations

[0063] (4.1) Groundwater level investigation and analysis:

[0064] After preliminary dewatering by 15 surrounding ring-shaped dewatering wells, the water level elevation in the site measured during foundation construction was approximately 489.00. The designed bottom elevation of the No. 5 and No. 6 water collection pits was 487.35 (including a 10mm cushion layer and a 20mm mattress layer).

[0065] (4.2) Determination of well depth:

[0066] When designing the dewatering scheme for the bucket well, the bucket was positioned in the center of the sump based on the area, depth, and permeability coefficient to be dewatered. The elevation of the top of the bucket well is the bottom elevation of the sump foundation, which will not affect subsequent work.

[0067] (4.3) Determination of pipe wall permeability:

[0068] The drainage capacity of the well was determined by measuring the permeability of the pipe wall and conducting on-site experiments, ensuring that the drainage effect of the well meets the requirements of on-site construction.

[0069] (5) Earthwork excavation

[0070] First, a shallow elevator shaft is excavated, followed by a sump pit. When the groundwater level is reached, a pre-prepared water pump is used to pump out the water for drainage. The construction method of excavating and pumping water at the same time is adopted until the required design bottom elevation is reached, and then the location for placing the well barrel is excavated again.

[0071] (6) Layout of well and pumping facilities

[0072] (6.1) Installation of the well barrel:

[0073] After the well barrel is transported to the construction site, once the sump pit is excavated to the required elevation, the well barrel is hoisted into the center of the sump pit, ensuring that the distance from each side of the CFG pile head at the bottom of the pit remains consistent.

[0074] (6.2) Installation of pumping facilities:

[0075] Before installation, the water pump should be securely connected to the rubber-coated steel hose. The electrical wires from the nearby switch box should be connected to the water pump, and the pump should be hoisted into the middle of the well using a steel wire rope. The outlet direction of the rubber-coated steel hose should coincide with the pre-reserved opening of the well. After the PE pipe is connected to the rubber-coated steel hose, it should be introduced into the upper part of the pit to the tertiary sedimentation tank, allowing the water to be discharged into the municipal sewage network.

[0076] Compared to traditional pipe well dewatering methods, the integrated barrel well dewatering structure for foundation pit dewatering has a wider range of applications. The integrated barrel well construction method offers more flexible structural layout, simpler assembly, and convenient and easily adjustable construction. The barrel well is prefabricated in a factory using BIM modeling, with its entire body welded from steel plates and internal triangular supports enhancing the well's stability. This significantly improves drainage efficiency compared to traditional pipe wells, and the barrel well is less prone to damage, resulting in high economic benefits.

[0077] The integrated well-bucket construction method can reduce the resources invested in construction, save construction costs, require less preliminary preparation, and ensure close cooperation between different trades and machinery, resulting in high construction efficiency and shorter construction period.

[0078] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0079] Although this document frequently uses reference numerals from the accompanying drawings: 1. well barrel; 1-1. upper part of well barrel; 1-2. middle part of well barrel; 1-3. lower part of well barrel; 1-4. water passage hole; 1-5. reserved position; 2. support; 2-1. support leg; 2-2. reinforcing crossbar; 3. water pipe; 4. water pump, etc., the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An integrated structure for dewatering and drainage in a well, characterized in that: Including well bucket (1), support (2) for supporting and fixing the position of well bucket (1), filter screen, water pump (4) and water pump (3), the filter screen is covered on the outer wall or inner wall of well bucket (1), one end of the water pump (3) is connected with the water outlet of water pump (4), the other end of the water pump (3) extends to the outside of the well bucket (1); The wall of the well bucket (1) is formed with a water hole (1-4).

2. The integrated structure of a bucket well and a drainage according to claim 1, characterized in that: The well bucket (1) comprises a well bucket upper part (1-1), a well bucket middle part (1-2) and a well bucket lower part (1-3), the well bucket upper part (1-1), the well bucket middle part (1-2) and the well bucket lower part (1-3) are integrally formed; The well bucket upper part (1-1) and the well bucket lower part (1-3) are both solid structures, and the water hole (1-4) is formed in the well bucket middle part (1-2).

3. The integrated structure of a bucket well and a drainage according to claim 2, characterized in that: The water hole (1-4) is a plurality of, and the adjacent two water holes (1-4) are equidistantly arranged.

4. The integrated structure of a bucket well and a drainage according to claim 1, characterized in that: The water pump (3) comprises two parts, rubber steel wire hose and PE pipe, rubber steel wire hose is connected with water pump (4), one end of PE pipe is connected with rubber steel wire hose, the other end of PE pipe is introduced into the upper part of foundation pit to three stage sedimentation tank, finally the water in the well bucket (1) is discharged.

5. The integrated structure of a bucket well and a drainage according to claim 4, characterized in that: The opening of the well bucket (1) is formed with a reserved position (1-5) for placing rubber steel wire hose.

6. The integrated structure of a bucket well and a drainage according to claim 5, characterized in that: The cross section of the reserved position (1-5) is square, and the depth of the reserved position (1-5) is matched with the outer diameter of rubber steel wire hose.

7. The integrated structure of a bucket well and a drainage according to claim 1, characterized in that: The well bucket (1) is welded by steel plate into barrel shape.

8. The integrated structure of a bucket well and a drainage according to claim 1, characterized in that: The water pump (4) is a submersible pump.

9. The integrated structure of a bucket well and a drainage according to claim 1, characterized in that: The support (2) comprises a support leg (2-1), the support leg (2-1) is fixed on the wall of the well bucket (1) by welding, and three support legs (2-1) are distributed in triangular shape.

10. The integrated structure of a bucket well and a drainage according to claim 9, characterized in that: The reinforcing cross bar (2-2) is arranged between the adjacent two support legs (2-1).

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