CN220202726U - Automatic anti-floating dewatering and drainage system for basement - Google Patents

Abstract

The utility model discloses an anti-floating automatic dewatering and drainage system for a basement. The drainage system comprises a plurality of horizontal branch pipes with geotechnical cloth, wherein the branch pipes are arranged below a basement bottom plate cushion layer, crushed stone water filtering layers are arranged around the branch pipes, the outer ends of the branch pipes extend and are communicated with a collecting pipe, underground water is collected into the collecting pipe, and the collecting pipe is connected with a water level observation pipe, a control pipe, a water pumping pipe well and other functional pipes which are vertically arranged. The utility model adopts a limited system to reduce the groundwater level below the basement bottom plate, solves the technical problems of insufficient systematicness such as the conventional pumping well at the foundation pit setting point, unsmooth collection of groundwater in backfill soil, and the like, has low cost, convenient construction, good popularization, no damage to buildings, conversely reduces the water pressure to protect the normal working environment of the basement bottom plate structure, reduces the occurrence of cracks and leakage, has obvious effect through practical verification, and has obvious innovative characteristics through verification that the technology has no corresponding national technical standard.

Description

Automatic anti-floating dewatering and drainage system for basement

Technical Field

The utility model belongs to the technical field of building construction, and particularly relates to an anti-floating automatic dewatering and drainage system for a basement, which can continuously play a role of a sponge city facility during construction and after engineering is put into use.

Background

The basement is designed to resist floating, and the basement is designed to resist floating or not. Regardless of the design, the construction stage has the serious hidden trouble of being soaked by rainwater and the structure floats upwards to be destroyed. The basement with the anti-floating design considers the earth covering weight on the top plate of the basement, and the condition that the basement structure floats upwards to cause damage mostly occurs because the earth covering weight is not completed in the construction stage; the basement without anti-floating design can cause floating damage of the structure because of factors such as incomplete drainage system or unfavorable environment anti-floating water level.

The danger period of the basement floating during construction is as follows: the floating damage can be caused by one rain during the period from the closing of the post-pouring belts of the basement bottom plate and the shear wall to the completion of the earthing on the top plate, especially after the backfilling of the foundation pit, and particularly the floating danger is most easily caused in the pure basement part between buildings.

The problem of floating of the basement bottom plate has the characteristics of strong concealment, short time, strong burst performance, serious structural damage, huge economic loss and the like, and belongs to an unacceptable major risk. The anti-floating methods adopted in the design stage are all passive anti-floating methods such as anti-floating anchor rods, anti-floating piles and the like, and the cost is high; in the construction stage, conventionally, vertical water pumping pipe wells are buried at the edges of a foundation pit, and the method has the problems that firstly, the water source collection is not smooth, the speed is low, and hidden danger can not be eliminated by rapid water drop and drainage; secondly, the underground water level condition can not be accurately reflected, and measures can not be taken for accurately judging risks; thirdly, the existing method needs to temporarily arrange a drainage facility and perform manual switching to implement drainage, so that the drainage facility cannot be disposed in time when dangerous situations occur; fourthly, the underground waterway is not smooth, the working efficiency of the water pump cannot be exerted, and the purpose of rapid water dropping is achieved. The conventional technology has limited application range, cannot effectively eliminate risks in time, and has systematic defects in the aspects of water source collection, water path smoothness, facility arrangement, secondary utilization and the like.

Aiming at the characteristics and the problems, the anti-floating measures adopted in the construction stage achieve early prevention and active control, and have the advantages of quick response, low cost and good effect. Actively drain underground water, reduce the underground water level and prevent the damage of the basement structure caused by incomplete floating resistance of the earthing counterweight in the construction stage. Also is an effective measure for preventing emergency when the basement is not designed to resist floating.

In addition, the national drought reservoir of 2022 dries up, saving and reutilization of water resources, and sponge city construction are receiving attention again. The sponge city emphasizes the collection and utilization of rainwater in the city range, and most of the rainwater collection measures adopted at present are like sidewalks only achieving seepage and drainage but not utilization, and part of the sponge city adopts wetland interception and not complete utilization, and various construction cost inputs are huge. Any complete technology of sponge city construction needs to have collection and storage processes and various facilities to be built and used, and only a small-scale test section is made worldwide at present. The construction of the sponge city facilities with complete cost saving and effectiveness of the facilities cannot be realized in a large range.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model aims to provide an anti-floating automatic dewatering and drainage system for a basement. The utility model adopts the limited anti-floating automatic dewatering and drainage system, and after the basement structure of the building is formed or closed, the dewatering and drainage system starts to operate, so that the groundwater level is always controlled below the warning water level, and the safety of the basement structure during construction is ensured. After the project is put into use, the water-reducing and draining system is reserved as an important part of the sponge city construction facility, and the utility is continuously exerted.

The utility model defines an anti-floating automatic dewatering and drainage system for a basement, which specifically comprises a plurality of branch pipes which are horizontally arranged below a basement bottom plate cushion layer, a ditch is excavated and buried in the ditch, a layer of geotechnical cloth is wrapped and arranged outside the branch pipes, broken stone water filtering layers are arranged around the branch pipes, one ends of the branch pipes extend to the outside of the basement outer wall and are communicated with a collecting pipe through pipes, groundwater collected by the branch pipes is collected into the collecting pipe, the collecting pipe is connected with a functional pipe which is vertically arranged through pipes, the functional pipe comprises a water level observation pipe, a control pipe and a water pumping pipe well, the opening ends of the water level observation pipe, the control pipe and the water pumping pipe well are all higher than the ground, the groundwater level in the foundation pit is observed through a first floating ball and a water level observation ruler which are arranged in the water level observation pipe, and a relay system which is arranged in the control pipe is used for automatically switching on or off a power supply to control the water pump in the water pumping pipe well to work, and pump the accumulated water in the foundation pit is pumped.

Furthermore, the utility model also defines that a first floating ball and a water level observation ruler are arranged in the water level observation tube, a second floating ball and a vertical buoyancy rod are arranged in the control tube, the bottom end of the vertical buoyancy rod is fixed on the second floating ball, a relay switch is arranged on the vertical buoyancy rod, the installation position of the relay switch is determined, a starting water line and a warning water line are set according to the on-site water lowering and draining requirement, the set starting water line and the warning water line are taken as base lines, the same height increment value is respectively taken as the base lines, the height increment value is larger than the difference value between the warning water line and the starting water line, two relay switches are respectively determined and installed on the vertical buoyancy rod in a left-right dislocation mode, the corresponding heights of the inner wall of the control tube and the relay switch are matched, a contact piece matched with the relay switch is arranged in a water pumping tube well, and a water pumping tube and a water pump are installed in the water pumping tube well.

Furthermore, the utility model also defines that the left and right sides of the same height on the vertical buoyancy rod are provided with the left relay switch and the right relay switch, the upper part of the starting water line on the inner wall of the control tube is provided with the lower relay contact piece, the upper part of the warning water line is provided with the upper relay contact piece, and the distance between the starting water line and the lower relay contact piece and the distance between the warning water line and the upper relay contact piece are the same as the height difference between the second floating ball and the left relay switch and the right relay switch; when the water level rises to reach a set starting water level line, the second floating ball floats upwards and drives the vertical buoyancy rod to rise, so that the left relay switch contacts with the lower relay contact piece and is connected with a power supply, and the water pump starts pumping water; when the water level rises continuously to reach the warning water level line, the right relay switch is contacted with the upper relay contact piece and is connected with the power supply, the alarm bell sound is generated, and the staff takes emergency measures or opens the emergency valve.

Furthermore, the utility model also defines that the emergency drain pipe is vertically connected with the pipe fitting on the collecting pipe, the emergency valve is horizontally connected with the pipe fitting on the emergency drain pipe, the installation height of the emergency valve is lower than the warning water level line, the connecting pipe fitting of the emergency valve and the emergency drain pipe horizontally penetrates through the peripheral wall body of the basement, and the opening of the emergency valve faces to the basement.

The utility model further defines that the groove is arranged below the basement bottom plate cushion layer, the width of the groove is not less than 400mm and the depth of the groove is not less than 400mm according to the designed interval and the direction, after the groove is excavated, gravels with the thickness of 100mm are paved at the bottom of the groove, geotechnical cloth wrapping branch pipes are buried on the gravels water filtering layer of the groove, and then a layer of gravels is covered to form the gravels water filtering layer, one end of each branch pipe extends horizontally and is buried outside the basement wall, so that the connection of a collecting pipe and the repeated utilization of the automatic dewatering and drainage system after engineering construction are finished are facilitated.

Furthermore, the utility model also defines that the upper part of the first floating ball is vertically connected with a water level observation ruler, the water level observation ruler is provided with numbers and scale marks, the observation scale marks for starting the water level lines and warning water level lines are marked, and the water level change in the foundation pit is observed at any time through the water level observation ruler.

By adopting the technology, the utility model has the following beneficial effects:

1) The utility model utilizes the branch pipes which are arranged at the lower part of the basement bottom plate and are longitudinally or transversely arranged at a certain interval to collect the groundwater rapidly, and each branch pipe collects the collected groundwater in a distributed way and drains the collected groundwater to the periphery of the basement wall body, thereby creating conditions for rapid and effective pumping and draining;

2) According to the utility model, by arranging the water level observation ruler and utilizing the communicating vessel principle, the underground water level is visualized, namely, the floating ball water level observation ruler is arranged in the functional vertical pipe, the underground water level condition is known at a glance, the response of pumping and draining the underground water is timely made, the floating risk is eliminated at the first time, the emergency pipe can be timely judged and started according to the water level change condition in unit time, and the emergency control measure of the rainfall risk is adopted;

3) The utility model can automatically early warn and work: a floating ball is arranged in the control pipe, the water level rises to a water pump work starting water level line, the relay switch and the relay contact piece are automatically connected with a water pump power supply to start working, when the floating ball with larger water quantity continuously rises to a warning water level line, the water pump power supply is automatically connected and an alarm is sent out to remind an emergency measure to be taken;

4) The utility model ensures the structural safety during the basement construction by timely descending and draining, and has great economic benefit and good popularization and application social benefit when being particularly applied to large-scale basement engineering.

5) Based on the technology of the utility model, the passive anti-floating measures in the design stage are further optimized, so that the construction cost can be reasonably reduced; the underground water level is timely reduced, collapse caused by long-time water soaking of the foundation pit wall is avoided, the safety of the foundation pit during construction is guaranteed, the underground engineering construction sections such as tunnels and the like can be timely drained, and normal and orderly construction can be guaranteed;

6) The utility model can also realize the secondary utilization of water resources: in the construction period, the technology applies the drainage-reducing water resource in the construction process, and secondary water resource utilization is carried out, so that the harm is converted into benefit, tap water application is reduced, and water cost is reduced;

7) After the construction is finished, the technology can be continuously applied after the building is put into use, the rainwater permeated into the bottom of the foundation pit is secondarily utilized, the water resource is saved, and the requirements of advocated green buildings are met;

the important characteristic of the technology of the utility model is that the drainage system is reserved for secondary use after completion of the project after application during construction. If the technology is applied to the underground foundation pit of urban building, the foundation pit can be used as an underground reservoir in a large scale of city, rainwater is permeated into the foundation pit for accumulation in rainy days, the rainwater under the foundation pit is pumped out to serve the building in sunny days, sponge city facility construction such as permeation and reservoir and the like is not needed, the cost is low, the effect is excellent, further sponge city construction can be realized in a large scale, a beneficial technical scheme is provided for sponge city construction, and the social and economic benefits are excellent;

moreover, the system of the utility model is beneficial to basement leakage maintenance: by applying the technology, the groundwater level is reduced below the basement bottom plate, then the maintenance of the local leakage point of the bottom plate is carried out in a water-free pressure state, the maintenance is convenient, the maintenance quality is guaranteed, the technical integrity is good, the branch pipes are arranged below the bottom plate, the groundwater is directly converged below the drainage pipe network through infiltration, the groundwater condition can be accurately and truly reflected in the pipe network, and therefore, timely instructions are obtained and the effective drainage is carried out. The utility model systematically solves the technical problems of incomplete anti-floating measures and the like caused by the unsmooth collection of groundwater in backfill soil in the conventional pit point-setting pumping well for the first time, has novel and complete method, remarkable innovative application benefit, low cost, convenient construction and good popularization, has no damage to the building, conversely reduces the water pressure, protects the normal working environment of the basement bottom plate structure, reduces the occurrence of cracks and leakage, has obvious effect through practical verification, and has obvious innovative characteristics after verification, the technology has no corresponding national technical standard.

Drawings

FIG. 1 is a schematic diagram of an anti-floating automatic dewatering and drainage system for a basement according to the present utility model;

FIG. 2 is a schematic view of a partially enlarged structure of a branch pipe section;

FIG. 3 is an enlarged schematic view of the water level observation tube;

fig. 4 is an enlarged schematic view of the control tube.

In the figure: 1. a crushed stone water filtering layer; 2. a branch pipe; 3. a header pipe; 4. a water level observation tube; 5. a control tube; 6. a water pumping pipe well; 7. a second floating ball; 7a, a first floating ball; 8. a water level observation ruler; 9. a buoyancy rod; 1001. a left relay switch; 1002. a right relay switch; 1003. a lower relay contact piece; 1004. a relay contact piece is arranged on the upper part; 11. starting a water level line; 12. a warning water level line; 13. a basement floor underlayment; 14. a basement floor; 15. a water pump; 16. an emergency drain pipe; 17. an emergency valve.

Description of the embodiments

The utility model is further described below with reference to the drawings and examples of the specification, but the scope of the utility model is not limited thereto:

as shown in fig. 1-4, the anti-floating automatic dewatering and drainage system for the basement defined by the utility model comprises a branch pipe 2 for collecting groundwater, a collecting pipe 3 communicated with the branch pipe 2, and all function vertical pipes communicated with the collecting pipe 3; as shown in the figure, the branch pipes 2 are arranged at the lower part of the basement bottom plate 14, grooves are dug below the basement bottom plate cushion layer 13, the branch pipes 2 are horizontally arranged in the grooves at certain intervals in the longitudinal or transverse direction, a plurality of water holes are formed in the branch pipes 2, geotextiles are wrapped outside the branch pipes 2, broken stone is filled around the branch pipes 2 to form a broken stone water filtering layer 1, and the outer ends of the branch pipes 2 extend to the outer side of the basement wall body; the collecting pipe 3 is horizontally vertical to the branch pipes 2 by utilizing the principle of communicating vessels, and the branch pipes 2 are communicated by a three-way pipe, so that underground water can be collected rapidly through the branch pipes 2 and drained to the periphery of a basement wall, and conditions are created for rapid and effective pumping and drainage;

the functional vertical pipes are a plurality of vertically arranged pipes, the lower parts of the functional vertical pipes are respectively connected with the collecting main 3 by a three-way pipe, the top opening ends of the functional vertical pipes are higher than the ground, the functional vertical pipes in the embodiment of the utility model comprise a water level observation pipe 4 used for water level observation, a control pipe 5 used for installing floating ball water level early warning/switching, a pumping pipe well 6 used for a pumping shaft and an emergency drain pipe 16 used for emergency drainage, an emergency valve 17 is horizontally connected to the emergency drain pipe 16 by a pipe fitting, the installation height of the emergency valve 17 is lower than a warning water level 12, the connecting pipe fitting of the emergency valve 17 and the emergency drain pipe 16 horizontally penetrates through the peripheral wall of the basement, and the opening of the emergency valve 17 faces into the basement.

As shown in fig. 1 and 3, a first float ball 7a is installed in the water level observation tube 4, the upper portion of the first float ball 7a is vertically connected with a water level observation ruler 8, the water level observation ruler 8 has numbers and scale marks, and the observation scale marks of the starting water level line 11 and the warning water level line 12 are marked. The water level change condition in the foundation pit is observed at any time through the water level observation ruler 8, the pumping and draining groundwater reaction can be timely carried out, the floating risk is eliminated at the first time, the emergency valve 17 can be timely judged and opened according to the water level change condition in unit time, and the floating risk of the basement is effectively avoided by adopting the precipitation emergency control measures through the emergency drain pipe 16;

as shown in fig. 1 and fig. 4, a second floating ball 7 and a vertical buoyancy rod 9 are installed in the control pipe 5, the bottom end of the vertical buoyancy rod 9 is fixed on the second floating ball 7, a starting water level 11 and a warning water level 12 are set according to the on-site water lowering height requirement, a relay switch 10 is installed at a determined position of the vertical buoyancy rod 9, the set starting water level 11 and the warning water level 12 are taken as base lines, the same height increasing values are respectively added to obtain the installation height of a contact piece matched with the relay switch 10, the height increasing value is larger than the difference value between the warning water level 12 and the starting water level 11, the installation height of the relay switch 10 is obtained by adding the set starting water level 11 on the vertical buoyancy rod 9, two relay switches 10 are installed at left and right sides of the height in a staggered manner, one contact piece matched with one relay switch 10 is installed on the inner wall of the control pipe 5, the warning water level 12 is taken as the base line, the height increasing value is matched with the other contact piece of the water level 10 on the inner wall of the control pipe 5, and the water pump is installed in the water pump 15;

a left relay switch 1001 and a right relay switch 1002 are arranged on the left side and the right side of the same height on the vertical buoyancy rod 9, a lower relay contact piece 1003 is arranged on the upper part of a starting water line 11 on the inner wall of the control pipe 5, an upper relay contact piece 1004 is arranged on the upper part of a warning water line 12, and the distance between the starting water line 11 and the lower relay contact piece 1003 and the distance between the warning water line 12 and the upper relay contact piece 1004 are the same as the height difference between the second floating ball 7 and the left relay switch 1001 and the right relay switch 1002; when the water level rises to reach the set starting water level line 11, the second floating ball 7 floats upwards to drive the vertical buoyancy rod 9 to rise, so that the left relay switch 1001 contacts with the lower relay contact piece 1003 and is connected with a power supply, and the water pump 15 starts pumping water; when the water level continues to rise to reach the warning water level 12, the right relay switch 1002 contacts the upper relay contact 1004 and turns on the power supply, and the alarm bell sounds, so that the staff takes emergency measures or opens the emergency valve 17.

The utility model relates to a construction method of an anti-floating automatic dewatering and drainage system of a basement, which specifically comprises the following steps:

1) Work preparation: preparing each component according to design requirements, arranging water permeable holes on the pipe wall of the branch pipe 2 at intervals, wrapping geotextiles, and preventing large-particle mud stones in the grooves from entering the branch pipe 2 to generate a blocking phenomenon;

2) Digging grooves below a basement bottom plate cushion layer 13 below a basement bottom plate 14 according to the designed number and positions, paving a layer of broken stone in the grooves, wrapping a branch pipe 2 by geotextiles, burying the branch pipe 2 in the grooves, leading one end of the branch pipe 2 out of a basement wall, and continuously paving a layer of broken stone on the branch pipe 2;

3) The outer ends of the branch pipes 2 are connected with a collecting pipe 3 through pipe fittings, vertical water level observation pipes 4, control pipes 5 and pumping pipe wells 6 are respectively led out of the collecting pipe 3 through pipe fittings, a first floating ball 7a and a water level observation ruler 8 are arranged in the water level observation pipes 4, numbers and scale marks are arranged on the water level observation ruler 8, and water level changes in a foundation pit are observed at any time through the water level observation ruler 8; the second floating ball 7 and the vertical buoyancy rod 9 are arranged in the control pipe 5, a left relay switch 1001 and a right relay switch 1002 are arranged on the left side and the right side of the same height on the vertical buoyancy rod 9, a lower relay contact piece 1003 is arranged on the upper part of a starting water line 11 on the inner wall of the control pipe 5, an upper relay contact piece 1004 is arranged on the upper part of a warning water line 12, and the distance between the starting water line 11 and the lower relay contact piece 1003 and the distance between the warning water line 12 and the upper relay contact piece 1004 are the same as the height difference between the second floating ball 7 and the left relay switch 1001 and the right relay switch 1002; a water pumping pipe and a water pump 15 are arranged in the water pumping pipe well 6;

4) The emergency drain pipe 16 is vertically connected to the collecting pipe 3 through a pipe fitting, the emergency drain pipe 16 is horizontally connected to the emergency valve 17 through a pipe fitting, the installation height of the emergency valve 17 is lower than that of the warning water line 12, the connecting pipe fitting of the emergency valve 17 and the emergency drain pipe 16 horizontally penetrates through the peripheral wall body of the basement, the emergency drain pipe is opened in the basement, and the emergency valve 17 is opened and closed at the opening end.

According to the basement anti-floating automatic dewatering and drainage system obtained by adopting the limiting technology and the limiting method, the underground water level is reduced in time by timely dewatering and drainage, the foundation pit is prevented from being soaked for a long time, the safety of the foundation pit during construction is ensured, and the system is particularly applied to large basement engineering, and has huge economic benefit and good popularization and application social benefit; the system is particularly suitable for timely draining underground engineering construction sections such as tunnels and the like, can ensure normal orderly construction, is favorable for basement leakage maintenance, reduces the groundwater level below a basement bottom plate before maintenance, and then performs the maintenance of local leakage points of the bottom plate in a water-free pressure state, thereby being convenient for maintenance and favorable for ensuring maintenance quality.

After the utility model is applied in the construction stage, the utility model is reserved for secondary use after the building is put into use.

The system can collect and extract rainwater penetrating into the bottom of the foundation pit, reutilizes water resources, reduces tap water application, reduces water cost, saves water resources and meets advocated green building requirements. If the technology is comprehensively applied to underground foundation pits of urban buildings, the foundation pits are used as large-scale underground reservoirs of cities, rainwater is permeated into the foundation pits for accumulation in rainy days, the underground rainwater of the foundation pits is pumped out to serve the buildings in sunny days, sponge city facility construction such as permeation, reservoirs and the like is not needed, the cost is low, the effect is excellent, and further, the large-scale sponge city construction can be further realized, so that a beneficial technical scheme is provided for the sponge city construction, and the social and economic benefits are excellent.

The utility model has good technical integrity, the branch pipes are arranged below the bottom plate, water permeation is directly converged on the drainage pipe network, the underground water condition can be accurately and truly reflected through the pipe network, and therefore, timely instructions are obtained and effective drainage is carried out. The utility model systematically solves systematic technical problems of incomplete anti-floating measures and the like caused by the unsmooth collection of groundwater in the backfill layer by the conventional spot-type pumping well arranged in the foundation pit for the first time, and has novel and complete method, remarkable innovation and application benefits, low technical cost, convenient construction, no damage to the building, and obvious effect and good popularization, and conversely reduces the water pressure to protect the normal working environment of the basement bottom plate structure, reduce the occurrence of cracks and leakage.

According to the anti-floating automatic dewatering and drainage system for the basement, after the project is completed, the anti-floating automatic dewatering and drainage system can be continuously applied to serve the construction project, and after surface water permeates into a foundation pit, secondary utilization of drainage water resources is carried out, so that the requirement of a green building is met, and the requirement of sponge city construction is met; when the basement appears the seepage condition, utilize this system to fall behind the drainage, conveniently repair the seepage position and guarantee the quality.

Claims (5)

1. The utility model provides an anti automatic dewatering drainage system that floats in basement, its characterized in that includes a plurality of levels to setting up in basement bottom plate bed course (13) under excavation irrigation ditch and bury branch pipe (2) including, the outside parcel of branch pipe (2) sets up one deck geotechnique cloth, branch pipe (2) are equipped with rubble drainage layer (1) all around, and branch pipe (2) outer end extends to the basement outer wall outside, and communicates through pipe fitting and collecting main (3), the groundwater that will collect branch pipe (2) is imported into collecting main (3), be connected with the functional pipe of vertical arrangement through pipe fitting on collecting main (3), functional pipe includes water level observation pipe (4), control pipe (5) and suction pipe well (6), water level observation pipe (4), control pipe (5) and suction pipe well (6) open end all are higher than ground, observe the groundwater level in the foundation ditch through setting up first floater (7 a) and water level measuring rule (8) in water level observation pipe (4), by setting up the relay system in control pipe (5), take out or power control suction pipe (6) in automatic water pump (15) work of taking off the foundation ditch.

2. The automatic anti-floating dewatering and drainage system for a basement according to claim 1, wherein a first floating ball (7 a) and a water level observation ruler (8) are installed in the water level observation tube (4), a second floating ball (7) and a vertical buoyancy rod (9) are installed in the control tube (5), the bottom end of the vertical buoyancy rod (9) is fixed on the second floating ball (7), an starting water level (11) and an alarm water level (12) are set according to the on-site dewatering and drainage height requirement, a relay switch (10) is installed at a determined position of the vertical buoyancy rod (9), the set starting water level (11) and the alarm water level (12) are taken as base lines, the same height increment values are respectively added to obtain the installation heights of contact pieces matched with the relay switch (10), the height increment values are larger than the difference value between the alarm water level (12) and the starting water level (11), the set starting water level (11) on the vertical buoyancy rod (9) are added with the installation heights of a relay switch (10), the relay switch (10) is installed on the right side of the control tube (10) and the other relay switch (10) is installed on the inner wall (10) before the other relay switch (10) is connected with the other relay switch (10), a water pumping pipe and a water pump (15) are arranged in the water pumping pipe well (6).

3. The basement anti-floating automatic dewatering and drainage system according to claim 2 is characterized in that a left relay switch (1001) and a right relay switch (1002) are arranged on the left side and the right side of the same height on a vertical buoyancy rod (9), a lower relay contact piece (1003) is arranged on the upper portion of a starting water line (11) of the inner wall of a control tube (5), an upper relay contact piece (1004) is arranged on the upper portion of a warning water line (12), the distance between the starting water line (11) and the lower relay contact piece (1003) and the distance between the warning water line (12) and the upper relay contact piece (1004) are the same as the height difference between a second floating ball (7) and the left relay switch (1001) and the right relay switch (1002).

4. A basement anti-floating automatic dewatering and draining system according to any one of claims 1-3, characterized in that a vertical emergency drain pipe (16) is connected to the collecting pipe (3) by a pipe fitting, a horizontal emergency valve (17) is connected to the emergency drain pipe (16) by a pipe fitting, the mounting height of the emergency valve (17) is lower than the warning water line (12), the connecting pipe fitting of the emergency valve (17) and the emergency drain pipe (16) horizontally penetrates through the peripheral wall of the basement, and the opening of the emergency valve (17) faces the basement.

5. The basement anti-floating automatic dewatering and drainage system according to claim 2, wherein the upper portion of the first floating ball (7 a) is vertically connected with a water level observation ruler (8), the water level observation ruler (8) is provided with numbers and scale marks, the water level observation ruler (8) is provided with observation scale marks for starting the water level line (11) and the warning water level line (12), and the water level change in the foundation pit is observed at any time through the water level observation ruler (8).