CN112281883B - Precipitation system and operation method thereof - Google Patents
Precipitation system and operation method thereof Download PDFInfo
- Publication number
- CN112281883B CN112281883B CN202011229440.6A CN202011229440A CN112281883B CN 112281883 B CN112281883 B CN 112281883B CN 202011229440 A CN202011229440 A CN 202011229440A CN 112281883 B CN112281883 B CN 112281883B
- Authority
- CN
- China
- Prior art keywords
- water
- air
- precipitation
- well
- pumping
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a dewatering system and an operation method thereof, wherein the dewatering system comprises a dewatering well, a water collection and drainage tank arranged at the bottom of the dewatering well and communicated with the dewatering well, a gas pumping/injection pipeline arranged outside the dewatering well and respectively communicated with the dewatering well and the water collection and drainage tank, a water drainage pipe communicated with the water collection and drainage tank and a gas pumping/injection device arranged outside the dewatering well, the dewatering well is communicated with the water collection and drainage tank through a water collection one-way valve, the gas pumping/injection pipeline is communicated with the dewatering well through a branch pipe, a gas suction one-way valve is arranged in the branch pipe, the gas suction one-way valve is opened when the gas pumping/injection device performs gas pumping, and is closed when the gas is injected, and the water collection one-way valve is opened when the gas pumping/injection device performs gas pumping and is closed when the gas is injected. By adopting the technical scheme of the invention, the precipitation speed of the precipitation well can be improved.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a precipitation system and an operation method thereof.
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.
At present, precipitation wells arranged at certain intervals are generally adopted in the industry for precipitation, underground water is introduced into the precipitation wells, and then water in the precipitation wells is pumped out through a water pump. However, the water is pumped by the water pump, and the deep well pumping cannot be carried out due to the limited lift of the water pump; in addition, the dewatering effect of the dewatering well is poor because the waiting time is long because the groundwater can only be slowly infiltrated into the dewatering well.
Disclosure of Invention
The invention aims to provide a precipitation system and an operation method thereof, so that the precipitation and drainage effects of a precipitation well are improved.
In the embodiment of the invention, a dewatering system is provided, which comprises a dewatering well, a water collecting and draining tank arranged at the bottom of the dewatering well and communicated with the dewatering well, a gas pumping/injecting pipeline arranged outside the dewatering well and respectively communicated with the dewatering well and the water collecting and draining tank, a water draining pipe communicated with the water collecting and draining tank, and a gas pumping/injecting device arranged outside the dewatering well, wherein the dewatering well is communicated with the water collecting and draining tank through a water collecting one-way valve, one end of the gas pumping/injecting pipeline is arranged at the top of the water collecting and draining tank, the other end of the gas pumping/injecting pipeline is connected with the gas pumping/injecting device, the gas pumping/injecting pipeline is communicated with the dewatering well through a branch pipe, a gas sucking one-way valve is arranged in the branch pipe, one end of the water draining pipe is arranged at the bottom of the water collecting and draining tank, the other end of the water draining pipe is arranged outside the water collecting and draining tank, the side wall of the dewatering well is provided with a water filtering device for collecting underground water, the air suction one-way valve is opened when the air suction/injection device sucks air and is closed when the air is injected, and the water collection one-way valve is opened when the air suction/injection device sucks air and is closed when the air is injected.
In the embodiment of the invention, the water filtering device is a separated water filtering pipe.
In the embodiment of the invention, the water filtering device is communicated with the water filtering one-way valve of the dewatering well.
In the embodiment of the invention, the dewatering well further comprises a wellhead sealing device for sealing the dewatering well.
In the embodiment of the invention, a drainage check valve is further arranged at the drainage outlet of the drainage pipe, and the drainage check valve is closed when the air pumping/injecting device performs air pumping and is opened when injecting air.
In the embodiment of the invention, the precipitation system further comprises an air pressure detection device arranged at the wellhead of the precipitation well and used for detecting the air pressure in the precipitation well.
In an embodiment of the invention, an operation method of the precipitation system is further provided, the air pumping/injecting device is controlled to perform air pumping or injecting actions according to air pressure changes in the precipitation well, and water in the water collecting and draining tank is drained through the draining pipe.
In an embodiment of the present invention, the operation method of the precipitation system specifically includes:
controlling the air pumping/injecting device to pump air until the air pressure in the precipitation well is reduced to a set value;
and waiting for a period of time until the air pressure in the precipitation well rises to the standard atmospheric pressure, controlling the air pumping/injecting device to inject air, and discharging the water in the water collecting and discharging tank through the water discharging pipe.
In an embodiment of the present invention, the operation method of the precipitation system further includes:
and when the water in the water collecting and draining tank is drained through the draining pipe, controlling the air pumping/injecting device to pump air.
Compared with the prior art, by adopting the precipitation system, when the air pumping/injecting device pumps air, the air suction one-way valve is opened, the water collection one-way valve is opened, the drain valve is closed, the underground water flows into the precipitation well through the water filtering branch pipe at an accelerated speed under the action of air pressure, and flows into the water collecting and draining tank, and controls the gas pumping/injecting device to inject gas when the gas pressure in the precipitation well is not changed, the air suction one-way valve is closed, the water collecting one-way valve is closed, the drain valve is opened, and the water in the dewatering well is discharged through the drain pipe, after the water in the precipitation well is discharged through the drain pipe, when the air pressure in the precipitation well is not changed any more, and controlling the air pumping/injecting device to pump air, and repeating the actions to quickly discharge the underground water through the dewatering well.
Drawings
Fig. 1 is a schematic structural diagram of a precipitation system according to an embodiment of the invention.
Fig. 2 is a flow chart of a method of operation of a precipitation system in accordance with 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 precipitation system is provided, which includes a precipitation well 1, a gas pumping/injecting pipeline 2 communicated with the precipitation well 1, a water discharging pipe 3 communicated with the precipitation well 1, a gas pumping/injecting device 4 disposed outside the precipitation well 1, and a water collecting and discharging tank 5 disposed at the bottom of the precipitation well 1 and communicated with the precipitation well 1.
The dewatering well 1 is arranged underground and used for collecting underground water. The dewatering well 1 further comprises a wellhead sealing device 11 for sealing the dewatering well 1. And a groundwater seepage device 12 is arranged on the side wall of the dewatering well 1 and used for collecting groundwater. The groundwater seepage device 12 is communicated with the precipitation well 1 through a seepage one-way valve 13. The groundwater seepage device 12 may adopt a separation type water filtering pipe, or may adopt other water filtering devices.
The water collecting and draining tank 5 is communicated with the precipitation well 1 through a water collecting one-way valve 51. One end of the gas pumping/injecting pipeline 2 is arranged in the water collecting and draining tank 5, and the other end is connected with the gas pumping/injecting device 4. The gas pumping/injecting pipeline 2 is also communicated with the dewatering well through a branch pipe 22, and a gas suction one-way valve 21 is arranged in the branch pipe.
One end of the drain pipe 3 is arranged at the bottom of the water collecting and draining box 5, and the other end of the drain pipe is arranged outside the dewatering well 1 and used for draining the underground water collected in the water collecting and draining box 5 out of the water collecting and draining box 5. A drain check valve 31 is further arranged at the drain outlet of the drain pipe 3.
The gas pumping/injecting device 4 is arranged on the ground and used for injecting gas into the water collecting and draining box 5 or pumping gas from the dewatering well 1 and changing the gas pressure in the dewatering well 1 and the water collecting and draining box 5, thereby accelerating the collection and the drainage of underground water. The air suction check valve 21 is opened when the air suction/injection device 4 sucks air and is closed when the air is injected. The drain check valve 31 is closed when the gas suction/injection device 4 sucks gas and is opened when the gas is injected. The water collecting check valve 51 is opened when the gas pumping/injecting device 4 pumps gas and is closed when injecting gas.
Further, in the embodiment of the present invention, the precipitation system further includes an air pressure detection device 6 disposed at a wellhead of the precipitation well, and configured to detect the air pressure in the precipitation well 1, so that the working state of the gas pumping/injecting device 4 can be controlled according to the air pressure in the precipitation well 1, so as to control the operation of the precipitation system. The air pressure detecting means 6 may be a vacuum gauge.
As shown in fig. 2, in the embodiment of the present invention, there is further provided an operation method of the above precipitation system, the air suction/injection device 4 is controlled to perform air suction or injection according to the air pressure change in the precipitation well 1, and the water in the water collection and drainage tank 5 is drained through the drainage pipe 3. The operation method of the precipitation system specifically comprises the following steps:
controlling the gas pumping/injecting device 4 to pump until the gas pressure in the dewatering well 1 is reduced to a set value;
waiting for a period of time until the air pressure in the dewatering well 1 rises to the standard atmospheric pressure, controlling the air pumping/injecting device 4 to inject air, and discharging the water in the water collecting and discharging tank 5 through the water discharging pipe 3;
when the water in the water collecting and draining tank 5 is drained through the drain pipe 3, the air pumping/injecting device 4 is controlled to pump air.
By repeating the above processes, the groundwater can be rapidly collected and discharged.
In summary, with the precipitation system and the operation method thereof of the present invention, when the air pumping/injecting device pumps air, the air suction check valve is opened, the water collection check valve is opened, the drainage check valve is closed, and the air pressure in the precipitation well is reduced, so that groundwater rapidly permeates into the precipitation well under the action of atmospheric pressure; when the gas pumping/injecting device injects gas, the gas suction one-way valve is closed, the water collecting one-way valve is closed, the drainage one-way valve is opened, water in the water collecting and drainage device is drained through the drainage pipe under the action of air pressure, and therefore collection and drainage of underground water can be accelerated.
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 (9)
1. A precipitation system is characterized by comprising a precipitation well, a water collecting and draining tank arranged at the bottom of the precipitation well and communicated with the precipitation well, a gas pumping/injecting pipeline arranged outside the precipitation well and respectively communicated with the precipitation well and the water collecting and draining tank, a water draining pipe communicated with the water collecting and draining tank and a gas pumping/injecting device arranged outside the precipitation well, wherein the precipitation well is communicated with the water collecting and draining tank through a water collecting check valve, one end of the gas pumping/injecting pipeline is arranged at the top of the water collecting and draining tank, the other end of the gas pumping/injecting pipeline is connected with the gas pumping/injecting device, the gas pumping/injecting pipeline is communicated with the precipitation well through a branch pipe, a gas sucking check valve is arranged in the branch pipe, one end of the water draining pipe is arranged at the bottom of the water collecting and draining tank, the other end of the water draining pipe is arranged outside the water collecting and draining tank, the side wall of the dewatering well is provided with a water filtering device for collecting underground water, the air suction one-way valve is opened when the air suction/injection device sucks air and is closed when the air is injected, and the water collection one-way valve is opened when the air suction/injection device sucks air and is closed when the air is injected.
2. The precipitation system of claim 1, wherein the water filtering means is a split strainer.
3. The precipitation system of claim 1, wherein the water filtering device is in communication with the precipitation well through-filter water one-way valve.
4. The precipitation system of claim 1, wherein the precipitation well further comprises a wellhead sealing device for sealing the precipitation well.
5. The precipitation system according to claim 1, wherein a drain check valve is further provided at the drain port of the drain pipe, and the drain check valve is closed when the gas pumping/injecting device pumps gas and is opened when injecting gas.
6. The precipitation system of claim 5, further comprising an air pressure detection device disposed at a wellhead of the precipitation well for detecting air pressure within the precipitation well.
7. A method of operating a precipitation system according to claim 6,
and controlling the air pumping/injecting device to perform air pumping or injecting actions according to the air pressure change in the precipitation well, and discharging the water in the water collecting and draining tank through the draining pipe.
8. The method of claim 7, further comprising:
controlling the air pumping/injecting device to pump air until the air pressure in the precipitation well is reduced to a set value;
and waiting for a period of time until the air pressure in the precipitation well rises to the standard atmospheric pressure, controlling the air pumping/injecting device to inject air, and discharging the water in the water collecting and discharging tank through the water discharging pipe.
9. The method of operating a precipitation system of claim 8, further comprising:
and when the water in the water collecting and draining tank is drained through the draining pipe, controlling the air pumping/injecting device to pump air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011229440.6A CN112281883B (en) | 2020-11-06 | 2020-11-06 | Precipitation system and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011229440.6A CN112281883B (en) | 2020-11-06 | 2020-11-06 | Precipitation system and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112281883A CN112281883A (en) | 2021-01-29 |
| CN112281883B true CN112281883B (en) | 2022-03-11 |
Family
ID=74351518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011229440.6A Active CN112281883B (en) | 2020-11-06 | 2020-11-06 | Precipitation system and operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112281883B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605424A (en) * | 2021-05-07 | 2021-11-05 | 上海洋源建设发展有限公司 | Dewatering well drainage device that catchments |
| CN115434301A (en) * | 2022-08-03 | 2022-12-06 | 上海渊丰地下工程技术有限公司 | Vacuum preloading drainage system and foundation treatment method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57158435A (en) * | 1981-03-27 | 1982-09-30 | Kichiji Suzuki | Sucking-up method for muddy water |
| CN105064383A (en) * | 2015-08-27 | 2015-11-18 | 冯克俊 | Pipe-inserting negative pressure air jet deep-well dewatering device |
| CN105332384A (en) * | 2015-11-27 | 2016-02-17 | 上海长凯岩土工程有限公司 | Super pressure suction joint pumping system and operating method thereof |
| CN205369282U (en) * | 2016-02-08 | 2016-07-06 | 王继龙 | Well point dewatering of sluice construction usefulness |
| CN205636766U (en) * | 2016-05-04 | 2016-10-12 | 上海岩土工程勘察设计研究院有限公司 | Nested pumping device of pneumatic type |
| CN110939151A (en) * | 2019-12-27 | 2020-03-31 | 上海长凯岩土工程有限公司 | Water-vapor mixing system of super pressure-suction combined pumping system and working method thereof |
-
2020
- 2020-11-06 CN CN202011229440.6A patent/CN112281883B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57158435A (en) * | 1981-03-27 | 1982-09-30 | Kichiji Suzuki | Sucking-up method for muddy water |
| CN105064383A (en) * | 2015-08-27 | 2015-11-18 | 冯克俊 | Pipe-inserting negative pressure air jet deep-well dewatering device |
| CN105332384A (en) * | 2015-11-27 | 2016-02-17 | 上海长凯岩土工程有限公司 | Super pressure suction joint pumping system and operating method thereof |
| CN205369282U (en) * | 2016-02-08 | 2016-07-06 | 王继龙 | Well point dewatering of sluice construction usefulness |
| CN205636766U (en) * | 2016-05-04 | 2016-10-12 | 上海岩土工程勘察设计研究院有限公司 | Nested pumping device of pneumatic type |
| CN110939151A (en) * | 2019-12-27 | 2020-03-31 | 上海长凯岩土工程有限公司 | Water-vapor mixing system of super pressure-suction combined pumping system and working method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112281883A (en) | 2021-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112281883B (en) | Precipitation system and operation method thereof | |
| CN102704871B (en) | The method of further well-flushing and well washing apparatus in water source heat pump system | |
| CN102392129B (en) | Method and system of in-situ ore leaching and leachate discharge of ion adsorption type ore | |
| CN101787702A (en) | Effective vacuum dewatering method | |
| CN105332384A (en) | Super pressure suction joint pumping system and operating method thereof | |
| CN110847961A (en) | Tunnel drainage system | |
| KR200460536Y1 (en) | Vacuum deep well drainage system for underground water level lowering method | |
| CN208009459U (en) | A kind of well-points dewatering system | |
| CN105442624A (en) | Gas pumping-injecting interactive type foundation pit precipitation system and precipitation method thereof | |
| CN112252347B (en) | Deep well dewatering device and operation method thereof | |
| CN214423393U (en) | Precipitation system | |
| CN205636765U (en) | Inflatable is from inhaling precipitation well | |
| CN112281884A (en) | Well point dewatering device and operation method thereof | |
| CN212656853U (en) | Dewatering well drainage device that catchments | |
| CN103615014B (en) | A kind of dewatering device of soft soil foundation pit and using method thereof | |
| CN213979009U (en) | Well point dewatering device | |
| CN213979008U (en) | Deep well precipitation device | |
| CN111963242A (en) | Dewatering well water collecting and draining device and control method thereof | |
| CN214423392U (en) | Novel well point dewatering device | |
| CN203284787U (en) | Composite pipe well precipitation system | |
| CN111962540A (en) | Automatic drainage box | |
| CN113293785A (en) | Positive and negative pressure combined dewatering well structure with self-cleaning function and construction method | |
| CN105604076A (en) | Vacuum pump water-discharging device suitable for tunnel excavation | |
| CN218148462U (en) | Pipeless dewatering well | |
| CN202380456U (en) | Device for deep, vacuum and efficient unwatering and stabilizing of soil body |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 201600 Building 1, 1128 Wenhui Road, Songjiang District, Shanghai Patentee after: SHANGHAI YUANFENG UNDERGROUND ENGINEERING TECHNOLOGY Co.,Ltd. Address before: Room 307, building 16, 4588 Honghai Road, Sanxing Town, Chongming District, Shanghai 202152 Patentee before: SHANGHAI YUANFENG UNDERGROUND ENGINEERING TECHNOLOGY Co.,Ltd. |