CN112267485A - Novel well point dewatering device - Google Patents
Novel well point dewatering device Download PDFInfo
- Publication number
- CN112267485A CN112267485A CN202011229507.6A CN202011229507A CN112267485A CN 112267485 A CN112267485 A CN 112267485A CN 202011229507 A CN202011229507 A CN 202011229507A CN 112267485 A CN112267485 A CN 112267485A
- Authority
- CN
- China
- Prior art keywords
- well point
- water tank
- vacuum pump
- water
- dewatering device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sewage (AREA)
Abstract
The invention provides a novel well point dewatering device which comprises a water tank, a vacuum pump communicated with the water tank, a submersible pump arranged in the water tank, a well point main pipe communicated with the water tank and a plurality of well point branch pipes which are communicated with the well point main pipe and buried in a stratum. By adopting the technical scheme of the invention, the limit of the underground water level on the position of the vacuum pump can be eliminated.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a novel well point dewatering device.
Background
At present, underground projects such as highway tunnels, subways, underground pipe networks and the like built and proposed in China are increasing day by day, the projects can not pass through sections with complicated project hydrogeological conditions, and an underground water seepage field is in a dynamic balance state before the underground projects are built. Along with the excavation of the underground engineering and the formation of the near empty surface, underground water is collected and seeped to the near empty surface to form underground engineering excavation surface seepage water, if effective water collecting and draining measures are not taken, the rock surface fissure seepage water is drained to a drainage ditch of the underground engineering, the seepage water is gathered after the supporting lining wall, the water pressure is increased, the supporting body structure is damaged, and the seepage water generated by the engineering structure and the service life are greatly reduced; meanwhile, the underground engineering supporting and waterproof construction is carried out under the condition of large-area water seepage, the construction quality cannot be guaranteed, and the underground engineering is easy to have water seepage in the operation process.
As shown in fig. 1, it is common in the industry to perform dewatering by using underground well point branch pipes 5 arranged at certain intervals, introduce groundwater into the well point branch pipes 5, connect a plurality of well point branch pipes 5 through a main pipe 4, pump the main pipe 4 by a vacuum pump 1, and pump out and discharge the water vapor infiltrated into each well point branch pipe 5. The technical scheme has the following defects:
1. the position of the vacuum pump inlet 3 and the ground water level cannot theoretically exceed 10m (one atmosphere) in vertical distance due to atmospheric pressure so that the vacuum pump inlet 3, the depth of the well point branch pipe 5 and the position of the work surface 6 are limited in vertical space.
2. A part of energy is consumed in the process of moving water/gas in the main pipe 4, so that the horizontal space distance between the vacuum pump 1 and the well point branch pipe 5 on the water surface is limited, and the number of the well point branch pipes 5 is influenced.
3. Because the vacuum pump 1 needs the incoming water/gas to do work, the vacuum pump 1 consumes more electric energy, and simultaneously, because a certain amount of silt exists in the water entering the vacuum pump 1 sometimes, the vacuum generating device of the vacuum pump 1 is easily damaged, the vacuum degree and the air suction amount of the vacuum pump 1 are reduced, the running efficiency is reduced, and the service life of the vacuum pump 1 is also reduced.
Disclosure of Invention
The invention aims to provide a novel well point dewatering device, so that the number of well point branch pipes driven by a vacuum pump is increased, the service life of the vacuum pump is prolonged, and the limitation of the vertical height of an underground water level on the position of the vacuum pump is eliminated.
The embodiment of the invention provides a novel well point dewatering device which comprises a water tank, a vacuum pump communicated with the water tank, a submersible pump arranged in the water tank, a well point main pipe communicated with the water tank and a plurality of well point branch pipes which are communicated with the well point main pipe and buried in a stratum.
In the embodiment of the invention, the submersible pump is connected with a water outlet pipe extending out of the water tank and used for discharging water in the water tank through the water outlet pipe.
In the embodiment of the invention, the vacuum pump is communicated with the water tank through an air suction pipe.
Compared with the prior art, the novel well point dewatering device has the advantages that the vacuum pump only has air flow and is not limited by the vertical height of the underground water level in the well point branch pipe, so that the vacuum pump can be placed on the natural ground, the water tank can be placed on the operation surface of deep foundation pit construction, the action range of the novel light well point is enlarged, and construction and operation are facilitated; because the vacuum pump only inhales, does not need to do work to the drainage, can not inhale silt, make the efficiency of vacuum pump improve greatly, and a vacuum pump can drive more well point branch pipes, and the damage to the vacuum pump has also been reduced simultaneously to the reduction energy consumption of raising the efficiency.
Drawings
Fig. 1 is a schematic view of a prior art precipitation device.
Fig. 2 is a schematic structural diagram of a novel well point dewatering device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
As shown in fig. 1, in the embodiment of the present invention, a novel well point dewatering device is provided, which includes a water tank 1, a vacuum pump 2 communicated with the water tank 1, a submersible pump 3 disposed in the water tank 1, a well point main pipe 4 communicated with the water tank 1, and a plurality of well point branch pipes 5 buried in a formation and communicated with the well point main pipe 4. And the well point branch pipe 5 is provided with filter holes for collecting underground water.
The vacuum pump 2 is communicated with the water tank 1 through an air suction pipe 6. The vacuum pump 2 is used for vacuumizing the water tank 1, the well point main pipe 4 and the well point branch pipe 5, and extracting a water and water-vapor mixture in the well point branch pipe 5 into the water tank 1. The water and water-gas mixture in the well point branch 5 is separated into water and gas in the water tank 1. The separated gas is further pumped away by the vacuum pump 2 and the separated water is pumped away by the submersible pump 3.
The submersible pump 3 is connected with a water outlet pipe 7 extending out of the water tank 1 and used for discharging water in the water tank 1 through the water outlet pipe 6. The submersible pump 3 may be disposed at the bottom of the water tank 1, or may be disposed at the middle of the water tank 1, which is not limited in the present invention.
In conclusion, by adopting the novel well point dewatering device, the vacuum pump only has air flow and is not limited by the vertical height of the underground water level in the well point branch pipe, so that the vacuum pump can be placed on the natural ground, the water tank can be placed on the operation surface of deep foundation pit construction, the action range of the novel light well point is enlarged, and the construction and the operation are convenient; because the vacuum pump only inhales, does not need to do work to the drainage, can not inhale silt, make the efficiency of vacuum pump improve greatly, and a vacuum pump can drive more well point branch pipes, and the damage to the vacuum pump has also been reduced simultaneously to the reduction energy consumption of raising the efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides a novel well point dewatering device, its characterized in that, including the water tank, with the vacuum pump that the water tank is linked together, set up in immersible pump in the water tank, with the well point that the water tank is linked together is responsible for and with a plurality of well point branch pipes of burying in the stratum that the well point is responsible for and is linked together.
2. The novel well-point dewatering apparatus of claim 1, wherein the submersible pump is connected to an outlet pipe extending out of the water tank for draining water from the water tank through the outlet pipe.
3. The novel well point dewatering apparatus of claim 1, wherein the vacuum pump is in communication with the water tank via an intake pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011229507.6A CN112267485A (en) | 2020-11-06 | 2020-11-06 | Novel well point dewatering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011229507.6A CN112267485A (en) | 2020-11-06 | 2020-11-06 | Novel well point dewatering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112267485A true CN112267485A (en) | 2021-01-26 |
Family
ID=74344349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011229507.6A Pending CN112267485A (en) | 2020-11-06 | 2020-11-06 | Novel well point dewatering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112267485A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002088770A (en) * | 2000-09-13 | 2002-03-27 | Ohbayashi Corp | Air leakage recovering apparatus for use in caisson method |
| CN201722698U (en) * | 2010-07-09 | 2011-01-26 | 许累峰 | Quick well sinking and water precipitating device |
| CN104790376A (en) * | 2015-04-10 | 2015-07-22 | 江苏澄工科技有限公司 | Soft foundation modified rapid separation and tamping method |
| CN211228566U (en) * | 2019-11-29 | 2020-08-11 | 陕西国昊工程技术咨询有限责任公司 | Recoverable vacuum light well point dewatering system |
-
2020
- 2020-11-06 CN CN202011229507.6A patent/CN112267485A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002088770A (en) * | 2000-09-13 | 2002-03-27 | Ohbayashi Corp | Air leakage recovering apparatus for use in caisson method |
| CN201722698U (en) * | 2010-07-09 | 2011-01-26 | 许累峰 | Quick well sinking and water precipitating device |
| CN104790376A (en) * | 2015-04-10 | 2015-07-22 | 江苏澄工科技有限公司 | Soft foundation modified rapid separation and tamping method |
| CN211228566U (en) * | 2019-11-29 | 2020-08-11 | 陕西国昊工程技术咨询有限责任公司 | Recoverable vacuum light well point dewatering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210126 |