CN211228566U - Recoverable vacuum light well point dewatering system - Google Patents
Recoverable vacuum light well point dewatering system Download PDFInfo
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- CN211228566U CN211228566U CN201922117452.9U CN201922117452U CN211228566U CN 211228566 U CN211228566 U CN 211228566U CN 201922117452 U CN201922117452 U CN 201922117452U CN 211228566 U CN211228566 U CN 211228566U
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Abstract
The utility model discloses a light-duty well point dewatering system of recoverable vacuum, including a plurality of well point pipes, well point pipe is buried underground in the well hole, and the ground end of well point pipe is connected on the header pipe, and the one end of header pipe is connected on the header tank, and the lower part of header tank is provided with the outlet, is connected with suction pump and vacuum pump on the header tank, is provided with the drain pipe on the suction pump, and vacuum pump and header tank communicate each other, still are provided with pressure and water level monitoring device on the header tank. The utility model discloses a bury well point pipe underground in the well hole to through collecting main with a plurality of well point union couplings that have a determining deviation as an organic whole, concentrate the drainage under the effect of vacuum suction, set up pressure and water level monitoring device on the header tank simultaneously, the constructor of being convenient for is according to water level and vacuum control vacuum pump and suction pump in the header tank, guarantee that precipitation work goes on in succession, can effectively improve precipitation efficiency, after the precipitation, well point pipe, collecting main and pumping device are recoverable to have enough to meet the need the use.
Description
Technical Field
The utility model belongs to the technical field of foundation ditch dewatering construction, concretely relates to light-duty well point dewatering system of recoverable vacuum.
Background
In the process of urbanization and supporting facility construction, due to the complexity of site engineering geology and hydrogeological conditions, the requirement on site rainfall is higher and higher. The precipitation can prevent the bottom surface and the slope surface of the foundation pit from water seepage, ensure the bottom of the pit to be dry and facilitate earthwork excavation and underground structure construction; the water content of the side slope soil body can be reduced, the soil body strength is improved, the stability of the side slope and the pit bottom is improved, and soil layer particles of the side slope or the pit bottom are prevented from losing. To the loess area, precipitation adopts the tube well scheme mostly, nevertheless to the stratum for the sand cobble condition, need adopt special pore-forming process, the construction degree of difficulty is great, and well-flushing is untimely, influences precipitation effect. Under the condition of small depth reduction, a light well point dewatering scheme can be adopted, most of the traditional well point dewatering adopts steel pipes, and a filter pipe and a water collecting device are complex, have no pressure and water level observation devices, are inconvenient to construct and cannot be recycled, so that the maintenance workload is increased; on the premise of meeting the requirement of precipitation in excavation construction of a foundation pit, the construction process is optimized, construction is convenient and fast, and the construction method can be recycled and has great engineering application significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem lie in not enough among the above-mentioned prior art, a recoverable light-duty well point dewatering system in vacuum is provided, its structural design is reasonable, the simple operation, through burying well point pipe underground into the well bore, and the header pipe who lays through the level is as an organic whole with a plurality of well point union couplings that have a determining deviation, concentrate drainage under the effect of vacuum suction, can effectively improve the work efficiency of well point pipe, be convenient for have enough to meet the need the use, save the cost, simultaneously through setting up pressure and water level monitoring device on the header tank, the constructor of being convenient for is according to water level and vacuum control vacuum pump and suction pump in the header tank, guarantee that dewatering work goes on in succession, can effectively improve dewatering efficiency.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a light-duty well point dewatering system of recoverable vacuum which characterized in that: including a plurality of well points pipes that have the interval bury in the secret retaining layer to precipitation place outer lane and that the degree of depth is different underground, precipitation place outer lane is provided with a plurality of wellholes that supply well points pipe to bury underground, and is a plurality of the ground end of well points pipe is all connected on header pipe, header pipe's one end is connected with pumping device, pumping device includes header tank and suction pump, one side upper portion of header tank is provided with the water inlet, header pipe connects on the water inlet, header tank's lower part is provided with one or more outlet, be connected with the suction pump on header tank's the outlet, be provided with the drain pipe on the delivery port of suction pump, header tank's top is provided with the vacuum pump, the vacuum pump passes through the connecting pipe and communicates with header tank each other, still be provided with pressure and water level monitoring devices on the header tank.
The light well point dewatering system capable of recycling vacuum is characterized in that: a gravel filter layer is filled between the hole wall of the well hole and the well point pipe, and a clay layer is arranged at the hole opening of the well hole.
The light well point dewatering system capable of recycling vacuum is characterized in that: the one end outside cover that stretches into to the secret retaining in situ on the well point pipe is equipped with the direction steel pipe, be tight fit between well point pipe and the direction steel pipe, the lower extreme of direction steel pipe seals, stretch into all seted up a plurality of holes of permeating water on the pipe wall of direction steel pipe and the well point pipe on the section of thick bamboo section in the secret retaining in situ.
The light well point dewatering system capable of recycling vacuum is characterized in that: flange connections are formed between the water collecting main pipe and the water collecting tank, between the water outlet of the water collecting tank and the water inlet of the water suction pump and between the water outlet of the water suction pump and the water discharge pipe.
The light well point dewatering system capable of recycling vacuum is characterized in that: the connecting pipe is a flexible connecting pipe, the top of the water collecting tank is provided with a short connecting pipe for mounting the connecting pipe, and the short connecting pipe is provided with a gas valve.
The light well point dewatering system capable of recycling vacuum is characterized in that: and a liquid valve is arranged on the drain pipe.
The light well point dewatering system capable of recycling vacuum is characterized in that: the pressure and water level monitoring device comprises a water measuring pipe and a vacuum meter, wherein the water measuring pipe is a transparent pipe.
The light well point dewatering system capable of recycling vacuum is characterized in that: the vacuum meter is installed at the top of the water collecting tank through the exhaust pipe, one end of the water measuring pipe is connected to the lower portion of the water collecting tank and communicated with the inner cavity of the water collecting tank, and the other end of the water measuring pipe is communicated with the exhaust pipe.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses a be provided with a plurality of wellholes around the precipitation place to bury the well point pipe underground in the wellhole, can effectively improve the work efficiency of well point pipe, optimize construction process, be convenient for have enough to meet the need the use many times to the well point pipe.
2. The utility model discloses a collecting main is as an organic whole with a plurality of well points union coupling, and the collecting main who lays the level links to each other with pumping device again, and it is less to use suction pump and corresponding supporting tubular product, saves the cost.
3. The utility model discloses a set up the vacuum pump at the top of header tank, can siphon away the intraductal air of header tank, collecting main and well point through the vacuum pump and form certain negative pressure, make the intraformational dive of secret retaining or bearing water get into well point pipe under the effect of vacuum suction, discharge through collecting main and pumping device to reduce ground water level.
4. The utility model discloses a set up pressure and water level monitoring device on the header tank, can survey vacuum and the water storage condition in the header tank at any time, and then can in time open and close the vacuum pump, make the intraformational dive of secret retaining or confined water loop through the well point pipe under the effect of vacuum suction and get into the header tank behind the header pipe and discharge, can effectively improve precipitation efficiency.
5. The utility model discloses a set up one or more outlet at the header tank to all be connected with the suction pump on every outlet, a plurality of drain pumps can the simultaneous working, also can replace and draw water, and the construction progress can be guaranteed to the maintenance and control precipitation rate of being convenient for.
To sum up, the utility model has the advantages of reasonable design, the simple operation is through burying well point pipe underground into the well bore to the header pipe who lays through the level is with a plurality of well point union couplings that have a determining deviation as an organic whole, concentrate drainage under the effect of vacuum suction, can effectively improve the work efficiency of well point pipe, be convenient for have enough to meet the need the use, save the cost, simultaneously through setting up pressure and water level monitoring devices on the header tank, the constructor of being convenient for is according to water level and vacuum control vacuum pump and suction pump in the header tank, guarantee that dewatering work goes on in succession, can effectively improve dewatering efficiency.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the internal structure of the well bore in which the well point pipe is buried.
Description of reference numerals:
1-well point pipe; 2-a water collecting main pipe; 3, a water collecting tank;
4, a water pump; 5, a water drainage pipe; 6-a vacuum pump;
7, a connecting pipe; 8, connecting short pipes; 9-the wellbore;
10-gravel filter bed; 11-clay layer; 12, guiding a steel pipe;
13-gas valve; 14-liquid valve; 15-water measuring pipe;
16-vacuum gauge; 17-an exhaust tube.
Detailed Description
As shown in fig. 1 and 2, the utility model comprises a plurality of well point pipes 1 embedded into the underground water storage layer of the outer ring of the precipitation field at certain intervals and having different embedding depths, the outer ring of the precipitation field is provided with a plurality of well holes 9 for embedding the well point pipes 1, the ground ends of the well point pipes 1 are all connected to a water collecting main pipe 2, one end of the water collecting main pipe 2 is connected with a water pumping device, the water pumping device comprises a water collecting tank 3 and a water pumping pump 4, the upper part of one side of the water collecting tank 3 is provided with a water inlet, the water collecting main pipe 2 is connected to the water inlet, the lower part of the water collecting tank 3 is provided with one or more water outlets, the water outlet of the water collecting tank 3 is connected with the water pumping pump 4, the water outlet of the water pumping pump 4 is provided with a water outlet pipe 5, the top of the water collecting tank 3 is provided with a vacuum pump 6, and a pressure and water level monitoring device is also arranged on the water collecting tank 3.
In the embodiment, the well holes 9 are formed by a geological drilling machine, the aperture of the well hole 9 is preferably 130mm, the aperture is small, the field disturbance is small, the cost is low, the later backfilling cost is low, the plugging effect is good, casing follow-up and mud wall protection measures can be adopted for a sandy gravel stratum, sediment in the hole is cleaned in a reverse circulation mode, the plurality of well holes 9 are arranged around a precipitation field, the well point pipe 1 is buried in the well holes 9, the working efficiency of the well point pipe 1 can be effectively improved, the construction process is optimized, and the well point pipe 1 can be conveniently recycled for multiple times.
During the in-service use, through set up vacuum pump 6 at the top of header tank 3, can suck away the air in header tank 3, collecting main 2 and well point pipe 1 and form certain negative pressure through vacuum pump 6, make the groundwater in the secret retaining layer or confined water get into well point pipe 1 under the effect of vacuum suction, discharge through collecting main 2 and pumping device to reduce ground water level.
It should be noted that, by arranging the pressure and water level monitoring device on the water collecting tank 3, the vacuum degree and the water storage condition in the water collecting tank 3 can be observed at any time, and then the vacuum pump 6 can be started and closed in time, so that the diving or bearing water in the underground water storage layer enters the water collecting tank 3 to be discharged after sequentially passing through the well point pipe 1 and the water collecting main pipe 2 under the action of vacuum suction, and the water lowering efficiency can be effectively improved.
In this embodiment, through be connected with suction pump 4 on the outlet at header tank 3, can be quick discharge the water in header tank 3 from drain pipe 5, can further improve precipitation efficiency.
During the in-service use, connect a plurality of well point pipes 1 as an organic whole through collecting main 2, collecting main 2 links to each other with pumping device again, uses suction pump and corresponding supporting tubular product less, saves the cost.
In this embodiment, the outer diameter of the water collecting main pipe 2 is phi 80 mm-phi 200mm, a plurality of connecting steel pipes for installing the well point pipes 1 and having an outer diameter of 40mm are fixed on the water collecting main pipe 2, and the connection steel pipes on the well point pipes 1 and the water collecting main pipe 2 are bound and sealed by using raw material belts, butter and steel wires.
During the in-service use, the lower part of header tank 3 is provided with two outlet, all is provided with a suction pump 4 on every outlet, and two suction pumps 4 can simultaneous working, also can replace and draw water, and the maintenance of being convenient for and control precipitation rate can guarantee the construction progress.
In this embodiment, a gravel filter layer 10 is filled between the hole wall of the well hole 9 and the well point pipe 1, and the hole opening of the well hole 9 is sealed by a clay layer 11.
During the in-service use, through burying well point pipe 1 in wellhole 9, pack the gravel filter material in wellhole 9 and form gravel filter layer 10, pack clay layer 11 of certain thickness in the drill way department of wellhole 9 and seal and pack, can optimize construction process, well point pipe 1 is convenient for retrieve and has enough to meet the need the use once more, can effectively reduce construction cost, reduces the waste of resource.
In this embodiment, the particle size of the gravel filter material in the gravel filter layer 10 is preferably 0.5cm to 3.0cm, the mud content of the gravel filter material is less than 1%, the top of the clay layer 11 is flush with the upper end of the orifice of the well hole 9, the thickness of the clay layer 11 is preferably 1.5m, and the clay layer 11 is arranged at the orifice of the well hole 9, so that the well hole 9 can be sealed, and air leakage is prevented.
In this embodiment, stretch into the one end outside cover in the secret retaining layer to be equipped with direction steel pipe 12 on well point pipe 1, be tight fit between well point pipe 1 and the direction steel pipe 12, the lower extreme of direction steel pipe 12 seals, stretch into all seted up a plurality of holes of permeating water on the section of the secret retaining layer in on the pipe wall of direction steel pipe 12 and well point pipe 1.
In actual use, the well point pipe 1 is a plastic pipe with the pipe diameter of phi 50 mm; the end part of the well point pipe 1 is extruded into a guide steel pipe 12 with the length of 1.5 m-3.0 m in a hot melting mode, and the pipe diameter of the guide steel pipe 12 is phi 50 mm. Through establishing a direction steel pipe 12 at the lower pot head of well point pipe 1, can carry out certain protection to well point pipe 1, be convenient for bury underground, reduce well point pipe 1 and take place the probability of damaging burying the in-process underground.
It should be noted that, by sealing the lower end of the guide steel pipe 12, it can be avoided that fine particles such as soil in the underground water storage layer enter the well point pipe 1 to cause blockage and affect the precipitation efficiency in the process of pumping and draining water.
In this embodiment, flange connections are formed between the water collecting main pipe 2 and the water collecting tank 3, between the water outlet of the water collecting tank 3 and the water inlet of the water suction pump 4, and between the water outlet of the water suction pump 4 and the water discharge pipe 5.
During the in-service use, the delivery port of header tank 3 and water inlet department all weld and have the connection steel pipe, and the flange joint department between header pipe 2 and the header tank 3, between the delivery port of header tank 3 and the water inlet of suction pump 4 and between the delivery port of suction pump 4 and the drain pipe 5 all seals through the stagnant water pad.
In this embodiment, the connection pipe 7 is a flexible connection pipe, the top of the water collection tank 3 is provided with a short connection pipe 8 for installing the connection pipe 7, and the short connection pipe 8 is provided with a gas valve 13.
During the in-service use, header tank 3 can adopt the steel sheet to weld into water tank or reinforced concrete water tank, through be provided with gas valve 13 on junction pipe 8, when having sufficient vacuum in header tank 3, can close gas valve 13 to guarantee the required vacuum of precipitation.
In this embodiment, the drain pipe 5 is provided with a liquid valve 14.
In practical use, the liquid valve 14 is arranged on the water discharge pipe 5, so that the opening and closing of the inner cavities of the two water discharge pipes 5 can be flexibly controlled.
In this embodiment, the pressure and water level monitoring device includes a water measuring tube 15 and a vacuum gauge 16, and the water measuring tube 15 is a transparent tube.
During the in-service use, through set up water gage 15 and vacuum gauge 16 on header tank 3, can monitor 3 inside water levels of header tank and vacuum at any time, guarantee that precipitation work goes on in succession.
In this embodiment, the vacuum gauge 16 is installed on the top of the water collecting tank 3 through the air exhaust pipe 17, one end of the water measuring pipe 15 is connected to the lower portion of the water collecting tank 3 and is communicated with the inner cavity of the water collecting tank 3, and the other end of the water measuring pipe 15 is communicated with the air exhaust pipe 17.
During the in-service use, the upper end and the lower extreme of water gage glass 15 all are provided with the coupling for with the upper portion and the lower part intercommunication of water gage glass 15 and header tank 3, through setting up water gage glass 15 to the hyaline tube, and with the upper end of water gage glass 15 and the top intercommunication of header tank 3, with the lower extreme of water gage glass 15 and the lower part intercommunication of header tank 3, can reflect the water level in the header tank 3 through the water level in the water gage glass 15, the constructor of being convenient for observes.
In this embodiment, the arrangement height of the lower end of the water measuring pipe 15 is slightly higher than that of the water discharging pipe 5.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (8)
1. The utility model provides a light-duty well point dewatering system of recoverable vacuum which characterized in that: comprises a plurality of well point pipes (1) which are arranged at intervals and are embedded into an underground water storage layer of an outer ring of a precipitation field and have different depths, wherein the outer ring of the precipitation field is provided with a plurality of well holes (9) for embedding the well point pipes (1), the ground ends of the well point pipes (1) are connected to a water collecting header pipe (2), one end of the water collecting header pipe (2) is connected with a water pumping device, the water pumping device comprises a water collecting tank (3) and a water pumping pump (4), the upper part of one side of the water collecting tank (3) is provided with a water inlet, the water collecting header pipe (2) is connected to the water inlet, the lower part of the water collecting tank (3) is provided with one or a plurality of water outlets, the water outlets of the water collecting tank (3) are connected with the water pumping pump (4), the water outlet of the water pumping pump (4) is provided with a water outlet pipe (5), the, the vacuum pump (6) is communicated with the water collecting tank (3) through a connecting pipe (7), and a pressure and water level monitoring device is further arranged on the water collecting tank (3).
2. The recoverable vacuum light well point dewatering system of claim 1, wherein: a gravel filter layer (10) is filled between the hole wall of the well hole (9) and the well point pipe (1), and a clay layer (11) is arranged at the hole opening of the well hole (9).
3. The recoverable vacuum light well point dewatering system of claim 1, wherein: stretch into the one end outside cover in the secret retaining of underground on well point pipe (1) and be equipped with direction steel pipe (12), be tight fit between well point pipe (1) and direction steel pipe (12), the lower extreme of direction steel pipe (12) seals, all seted up a plurality of holes of permeating water on stretching into the section in the secret retaining of underground on the pipe wall of direction steel pipe (12) and well point pipe (1).
4. The recoverable vacuum light well point dewatering system of claim 1, wherein: flange connections are arranged between the water collecting main pipe (2) and the water collecting tank (3), between the water outlet of the water collecting tank (3) and the water inlet of the water suction pump (4), and between the water outlet of the water suction pump (4) and the water discharging pipe (5).
5. The recoverable vacuum light well point dewatering system of claim 1, wherein: the connecting pipe (7) is a flexible connecting pipe, the top of the water collecting tank (3) is provided with a short connecting pipe (8) for mounting the connecting pipe (7), and the short connecting pipe (8) is provided with a gas valve (13).
6. The recoverable vacuum light well point dewatering system of claim 1, wherein: and a liquid valve (14) is arranged on the drain pipe (5).
7. The recoverable vacuum light well point dewatering system of claim 1, wherein: the pressure and water level monitoring device comprises a water measuring pipe (15) and a vacuum meter (16), wherein the water measuring pipe (15) is a transparent pipe.
8. The recoverable vacuum light well point dewatering system of claim 7, wherein: the vacuum meter (16) is installed at the top of the water collecting tank (3) through the air exhaust pipe (17), one end of the water measuring pipe (15) is connected to the lower portion of the water collecting tank (3) and communicated with the inner cavity of the water collecting tank (3), and the other end of the water measuring pipe (15) is communicated with the air exhaust pipe (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922117452.9U CN211228566U (en) | 2019-11-29 | 2019-11-29 | Recoverable vacuum light well point dewatering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922117452.9U CN211228566U (en) | 2019-11-29 | 2019-11-29 | Recoverable vacuum light well point dewatering system |
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| CN211228566U true CN211228566U (en) | 2020-08-11 |
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| CN201922117452.9U Active CN211228566U (en) | 2019-11-29 | 2019-11-29 | Recoverable vacuum light well point dewatering system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980041A (en) * | 2020-08-27 | 2020-11-24 | 河南科技大学 | Precipitation tank and foundation pit operation surface precipitation system |
| CN112267485A (en) * | 2020-11-06 | 2021-01-26 | 上海渊丰地下工程技术有限公司 | Novel well point dewatering device |
-
2019
- 2019-11-29 CN CN201922117452.9U patent/CN211228566U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980041A (en) * | 2020-08-27 | 2020-11-24 | 河南科技大学 | Precipitation tank and foundation pit operation surface precipitation system |
| CN112267485A (en) * | 2020-11-06 | 2021-01-26 | 上海渊丰地下工程技术有限公司 | Novel well point dewatering device |
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