CN208009459U - A kind of well-points dewatering system - Google Patents
A kind of well-points dewatering system Download PDFInfo
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- CN208009459U CN208009459U CN201820436118.2U CN201820436118U CN208009459U CN 208009459 U CN208009459 U CN 208009459U CN 201820436118 U CN201820436118 U CN 201820436118U CN 208009459 U CN208009459 U CN 208009459U
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Abstract
The utility model belongs to base pit dewatering technical field of construction, and in particular to a kind of well-points dewatering system.Including foundation pit, well-point pipe, water header and pumping equipment, well-point pipe has along the surrounding of foundation pit or side in the embedment underground aquifers of spacing respectively, the ground surface end of well-point pipe is connected to water header by bend pipe, pumping equipment is by well-point pipe groundwater abstraction and discharges, the pumping equipment includes vacuum pump, centrifugal water pump and moisture separator, and the import of moisture separator is connect with water header, exhaust outlet and vacuum pump connect, discharge outlet and centrifugal water pump connect；The discharge outlet of the vacuum pump is connect by water circulating pump with fluid reservoir, exhaust outlet is directly connect with fluid reservoir, and vacuum pump, water circulating pump and fluid reservoir constitute circulation path.So as to pressure in equilibrium system, ensures pre- time of pumping, vacuum degree in guarantee system, keeps persistently drawing water, reducing time of pumping.
Description
Technical field
The utility model belongs to base pit dewatering technical field of construction, and in particular to a kind of well-points dewatering system.
Background technology
The processing of underground water there are many feasible method, for dewatering mode can total score be that water-stop method and drainage two are big
Class.Water-stop method forms water-stop curtain that is, by effective means around foundation pit, and underground water is terminated in except foundation pit, such as open caisson
Method, grouting method, diaphram wall etc.；Drainage is to exclude surface and ground water within the scope of foundation pit, such as gutter drainage, well point
Precipitation etc..
Comparatively cost is higher for water-stop method, and difficulty of construction is larger；Well-points dewatering easy construction, operating technology are easy to slap
It holds, is a kind of effective Modern Construction method, has been widely used.
Well-point dewatering method is to bury a certain number of filter pipes before excavation of foundation pit in foundation pit surrounding, utilize pumping equipment
It draws water the method for making dug soil remain drying regime.It is that the well point that can be seeped water is set around the foundation pit of construction project to be built
Pipe, configures certain pumping equipment, incessantly takes underground water away, and the underground water within the scope of foundation pit is made to be reduced to design deep
Degree.Well-point method waterproof is suitable for the foundation pit with different geometries, it plays the role of overcoming quicksand, stable side slope.Due to base
Earthwork drying in hole, advantageous mechanicalization construction, shortens the construction period, and ensures construction quality and safety.
General vacuum tube well is since the leakproofness of structure is difficult to completely be ensured, vacuum degree is generally in underground engineering
It can only be maintained at 0.06MPa before construction；And after underground engineering construction, since the exposure of filter further results in vacuum degree
Loss, be generally only capable of maintaining 0.04MPa, largely affect base pit engineering drainage effect.It is past in engineering construction
Toward caused because of the larger water content of shallow soft soil layer and lower soil strength foundation pit be difficult to excavate or excavate it is inefficient,
Lower soil strength is but also the construction operation on excavation of foundation pit face is difficult to carry out simultaneously.
By the accumulation of long-term foundation pit dewatering project experience, there are following several disadvantages to the summary of vacuum drainage pipe well：
(1) it is influenced by the construction period, it is general it is difficult to ensure that pre- time of pumping enough；
(2) filtrate and chimney filter exposure after excavation of foundation pit, subsequently draws water and is difficult to ensure vacuum degree in well；
(3) termination of pumping is needed in Excavation Process, need to generally be cut off after one layer of excavation of foundation pit after well casing to excavation face can be after
It is continuous subsequently to draw water, it cannot keep persistently drawing water, largely reduce the time drawn water.
Utility model content
To solve the problems, such as vacuum degree deficiency in well existing in the prior art and cannot keep persistently drawing water, this practicality is new
Type provides a kind of well-points dewatering system.
The technical solution of the utility model is as follows：
A kind of well-points dewatering system, including foundation pit, well-point pipe, water header and pumping equipment, well-point pipe is respectively along foundation pit
Surrounding or side have in the embedment underground aquifers of spacing, the ground surface end of well-point pipe is connected to water header by bend pipe, take out
Wetting system is by well-point pipe groundwater abstraction and discharges, and the pumping equipment includes vacuum pump, centrifugal water pump and moisture separator,
The import of moisture separator is connect with water header, exhaust outlet and vacuum pump connect, discharge outlet and centrifugal water pump connect；It is described true
Sky pump discharge outlet connect with fluid reservoir by water circulating pump, exhaust outlet is directly connect with fluid reservoir, vacuum pump, water circulating pump and
Fluid reservoir constitutes circulation path.
Further, secondary moisture separator is additionally provided between the moisture separator and vacuum pump, secondary moisture separator
The exhaust outlet of air inlet and moisture separator connects, and secondary moisture separator is connect with the air inlet of vacuum pump, secondary aqueous vapor separation
Device can make the air being discharged from moisture separator carry out secondary separation.
Further, be additionally provided with filter chamber between the water header and moisture separator, the entrance of filter chamber with catchment
Manifold connections, outlet are connect with the import of moisture separator；Filter screen is equipped in the filter chamber, for filtering out in underground water
The granule foreigns such as silt, iron rust, algae, suspended matter.
Further, the main structure of the well-point pipe is chimney filter, and chimney filter is connect by well casing with bend pipe.
Further, the vacuum pump is driven by motor.
Compared with prior art, the utility model has following excellent technique effect：
The utility model not only remains the advantages of pipe well gravity releases water, but also can be according to formation condition and requirement of engineering
Saturated water in arbitrary well increase negative pressure draws cohesive soil, silt and interface residual water；The utility model may be implemented simultaneously
It is layered precipitation, prevents from oozing pollution deep-lying groundwater resources under the contaminated backwater in upper layer.Therefore, the utility model and tube well dewatering
It compares, in addition to it can solve the problems, such as aquiclude, interlayer backwater and interface residual water, still there is water-saving and environmental protection characteristic.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Reference numeral is as shown in the figure：1. water header, 2. bend pipes, 3. vacuum pumps, 4. centrifugal water pumps, the separation of 5. aqueous vapors
Device, 6. water circulating pumps, 7. fluid reservoirs, 8. secondary moisture separators, 9. filter chambers, 10. chimney filters, 11. well casings, 12. motor.
Specific implementation mode
The utility model is further explained below in conjunction with drawings and examples：
Embodiment 1
As shown in Figure 1, a kind of well-points dewatering system, including foundation pit, well-point pipe, water header 1 and pumping equipment, well-point pipe
Have in the embedment underground aquifers of spacing along the surrounding of foundation pit or side respectively, the main structure of well-point pipe is chimney filter 10, chimney filter 10
It is connect with bend pipe 2 by well casing 11, the ground surface end of well-point pipe is connected to water header 1 by bend pipe 2, and pumping equipment passes through well point
Pipe groundwater abstraction simultaneously discharges.
The pumping equipment includes vacuum pump 3, centrifugal water pump 4 and moisture separator 5, the import of moisture separator 5 and collection
The connection of supply mains 1, exhaust outlet and the connection of vacuum pump 3, discharge outlet and centrifugal water pump 4 connect；The vacuum pump 3 passes through motor 12
It drives, the discharge outlet of vacuum pump 3 is connect by water circulating pump 6 with fluid reservoir 7, exhaust outlet is directly connect with fluid reservoir 7, vacuum pump
3, water circulating pump 6 and fluid reservoir 7 constitute circulation path, so as to pressure in equilibrium system, ensure pre- time of pumping, ensure body
Vacuum degree, holding persistently draw water, reduce time of pumping in system.
The air inlet of secondary moisture separator 8, secondary moisture separator 8 is additionally provided between the moisture separator 5 and vacuum pump 3
It is connect with the exhaust outlet of moisture separator 5, the exhaust outlet of secondary moisture separator 8 is connect with the air inlet of vacuum pump 3, secondary aqueous vapor point
The air being discharged from moisture separator 5 can be made to carry out secondary separation from device 8.
Filter chamber 9, entrance and the water header 1 of filter chamber 9 are additionally provided between the water header 1 and moisture separator 5
Connection, outlet are connect with the import of moisture separator 5；Filter screen is equipped in the filter chamber 9, for filtering out in underground water
The granule foreigns such as silt, iron rust, algae, suspended matter.
Operation principle：
Vacuum pump 3 is first started when drawing water, by well-point pipe, fluid reservoir 7, filter chamber 9, moisture separator 5 and secondary aqueous vapor separation
Air in device 8 siphons away, and forms certain vacuum degree.Since underground water bears the effect of atmospheric pressure outside pipe-line system, it is
Holding equilibrium state is flowed from higher-pressure region to low-pressure area direction.Underground water is press-fit into well-point pipe, through water header 1 to
Filter chamber 9 enters moisture separator 5 after filtering.When the water entered in moisture separator 5 reach a certain height, you can start centrifugation
Water pump 4.Water and air in moisture separator 5 is flowed away to both direction：Water is discharged through centrifugal water pump 4, and air concentrates on
Portion enters after 8 secondary separation of secondary moisture separator in vacuum pump 3 to be followed what vacuum pump 3, water circulating pump 6 and fluid reservoir 7 were constituted
Ring access recycles, and then enters in vacuum pump 3 from the water brought in air stored to fluid reservoir 7 after the cycle of water circulating pump 6 on a small quantity
It is interior, to pressure in equilibrium system, ensures pre- time of pumping, vacuum degree in guarantee system, keep persistently drawing water, reduce when drawing water
Between.
The foregoing is merely the preferred embodiment in the utility model, are not intended to limit the utility model, for ability
For the technical staff in domain, various modifications and changes may be made to the present invention.It is all the spirit and principles of the utility model it
Interior, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of well-points dewatering system, including foundation pit, well-point pipe, water header (1) and pumping equipment, well-point pipe is respectively along foundation pit
Surrounding or side have in the embedment underground aquifers of spacing, the ground surface end of well-point pipe is connected to water header by bend pipe (2)
(1), pumping equipment by well-point pipe groundwater abstraction and discharges, which is characterized in that the pumping equipment include vacuum pump (3),
Centrifugal water pump (4) and moisture separator (5), the import of moisture separator (5) connect with water header (1), exhaust outlet and vacuum
(3) connection, discharge outlet and centrifugal water pump (4) is pumped to connect；The discharge outlet of the vacuum pump (3) passes through water circulating pump (6) and liquid storage
Room (7) connection, exhaust outlet are directly connect with fluid reservoir (7), and vacuum pump (3), water circulating pump (6) and fluid reservoir (7) constitute cycle
Access.
2. well-points dewatering system according to claim 1, which is characterized in that the moisture separator (5) and vacuum pump (3)
Between be additionally provided with secondary moisture separator (8), the air inlet of secondary moisture separator (8) is connect with the exhaust outlet of moisture separator (5),
The exhaust outlet of secondary moisture separator (8) is connect with the air inlet of vacuum pump (3).
3. well-points dewatering system according to claim 1, which is characterized in that the water header (1) and moisture separator
(5) filter chamber (9) is additionally provided between, the entrance of filter chamber (9) connect with water header (1), exports and moisture separator (5)
Import connects；Filter screen is equipped in the filter chamber (9).
4. well-points dewatering system according to claim 1, which is characterized in that the main structure of the well-point pipe is chimney filter
(10), chimney filter (10) is connect by well casing (11) with bend pipe (2).
5. well-points dewatering system according to claim 1, which is characterized in that the vacuum pump (3) passes through motor (12)
It drives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820436118.2U CN208009459U (en) | 2018-03-28 | 2018-03-28 | A kind of well-points dewatering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820436118.2U CN208009459U (en) | 2018-03-28 | 2018-03-28 | A kind of well-points dewatering system |
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| CN208009459U true CN208009459U (en) | 2018-10-26 |
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ID=63891308
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| CN201820436118.2U Active CN208009459U (en) | 2018-03-28 | 2018-03-28 | A kind of well-points dewatering system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593288A (en) * | 2019-09-06 | 2019-12-20 | 河北中基华工程项目管理有限公司 | Well point dewatering and drainage device for deep foundation pit |
| CN113089637A (en) * | 2021-02-23 | 2021-07-09 | 中铁十九局集团第三工程有限公司 | Water pumping device and water pumping system for soil solidification |
| CN113089706A (en) * | 2021-05-25 | 2021-07-09 | 中建五局华东建设有限公司 | Well point dewatering method and device suitable for soft land |
| CN113186962A (en) * | 2021-05-25 | 2021-07-30 | 中建五局华东建设有限公司 | Well point dewatering method and device suitable for soft land |
-
2018
- 2018-03-28 CN CN201820436118.2U patent/CN208009459U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593288A (en) * | 2019-09-06 | 2019-12-20 | 河北中基华工程项目管理有限公司 | Well point dewatering and drainage device for deep foundation pit |
| CN113089637A (en) * | 2021-02-23 | 2021-07-09 | 中铁十九局集团第三工程有限公司 | Water pumping device and water pumping system for soil solidification |
| CN113089706A (en) * | 2021-05-25 | 2021-07-09 | 中建五局华东建设有限公司 | Well point dewatering method and device suitable for soft land |
| CN113186962A (en) * | 2021-05-25 | 2021-07-30 | 中建五局华东建设有限公司 | Well point dewatering method and device suitable for soft land |
| CN113186962B (en) * | 2021-05-25 | 2023-06-02 | 中建五局华东建设有限公司 | Well point dewatering method and device suitable for soft soil |
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