CN111173465A - Well flushing device and use method thereof - Google Patents
Well flushing device and use method thereof Download PDFInfo
- Publication number
- CN111173465A CN111173465A CN202010070289.XA CN202010070289A CN111173465A CN 111173465 A CN111173465 A CN 111173465A CN 202010070289 A CN202010070289 A CN 202010070289A CN 111173465 A CN111173465 A CN 111173465A
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- China
- Prior art keywords
- mixing cavity
- well
- sediment
- water
- sludge
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000011010 flushing procedure Methods 0.000 title claims description 7
- 238000002156 mixing Methods 0.000 claims abstract description 52
- 239000013049 sediment Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000010276 construction Methods 0.000 claims abstract description 36
- 239000010802 sludge Substances 0.000 claims abstract description 26
- 238000001556 precipitation Methods 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000011049 filling Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 16
- 239000002893 slag Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Hydrology & Water Resources (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a well washing device, which comprises a sludge discharge pipe, a sludge pool and a water injection pipe, wherein the bottom of the sludge discharge pipe is hermetically connected with a mixing cavity; the upper part of the mixing cavity is also connected with an air compressor through a high-pressure air pipeline, and the well washing construction method is used for determining the number of wells needing to be subjected to sediment cleaning in the wells; taking the precipitation equipment out of the well, inserting a mixing cavity of the device into sediment in the well, wherein the mixing cavity is in close contact with the upper layer of the sediment in an initial state of the equipment; injecting water into the well to keep the equipment below the liquid level all the time; opening an air compressor to enable high-pressure gas to enter the mixing cavity at a high speed through the gas inlet pipeline; along with the continuous charging of the high-pressure gas, the pressure in the mixing cavity is continuously increased, and the mixture of the sediment, the water and the gas is forced to be ejected out of the discharge pipe into the sediment tank; during the process of filling high-pressure air, the mixing cavity is repeatedly lifted, lowered and moved, so that the sediments enter the mixing cavity.
Description
Technical Field
The invention relates to a construction method for reducing the sediment thickness of a dewatering well in a construction site, in particular to a well washing device capable of quickly reducing the sediment thickness in the well and a construction method.
Background
At present, in constructional engineering, aiming at projects needing precipitation engineering, the continuous accumulation of sediments in a precipitation well is considered, so that the depth of the precipitation well is gradually reduced. Particularly, under special geological conditions, rainfall is over or geological drawings are loose and are easy to run off, and the rainfall depth is easy to be greatly reduced. The water storage depth of the dewatering well cannot meet the engineering requirement. Therefore, the precipitation well needs to be desilted according to the accumulation condition of the sediment and the construction requirement. In the prior art, the dredging consumes long time, the operation is very inconvenient, the geological condition and the construction condition are not exact, and the dredging work is heavy and the proper period cannot be determined. Situations that affect the construction often still occur.
In the prior art, when a well is washed by precipitation, workers need to go down to the well first to arrange equipment, sediment and water at the bottom of the well are stirred by the equipment, and the equipment is started to extract slurry at the bottom of the well when the cement is uniform. The existing well washing construction has no clear data on how deep the dewatering well needs to meet the requirement, and the well washing and dredging are often determined according to construction experience. When the precipitation well sinks and silts, the precipitation well can not reduce the water level to the water level required by construction, and the normal operation of construction is influenced.
How to keep the limited depth of the precipitation well all the time in the actual construction process, complete the precipitation condition required by the project and ensure that the normal operation of the project becomes the problem to be solved by the project personnel.
Disclosure of Invention
In the continuous exploration process, a tool and a construction method capable of washing out foundation pit sediments are researched by a simple tool.
A well washing device comprises a sludge discharge pipe and a sludge tank arranged at a well mouth, wherein the top end of the sludge discharge pipe is arranged in the sludge tank, and a water injection pipe is also arranged, and the water outlet of the water injection pipe is positioned in a well; the bottom of the sludge discharge pipe is hermetically connected with the mixing cavity; the mixing cavity comprises an upper funnel-shaped slag suction chamber and a straight cylindrical stirring chamber, and the slag suction chamber and the stirring chamber are integrally formed; the upper part of the mixing cavity is also provided with an air connecting end which is connected with an air compressor through an air pressure air conveying pipe.
When the device is used, the mixing cavity is deeply inserted into silt, the bottom of the mixing cavity is sealed by using water pressure and atmospheric pressure, and slurry is pushed by using high-pressure air. The device has simple pipeline, light total weight of the well entering device, easy control and high cleaning speed.
The invention also provides a well washing construction method, which comprises the following steps:
1) numbering the dewatering wells one by one according to the construction requirements of the building engineering and the arrangement diagram of the dewatering wells, and measuring the depths of the dewatering wells one by one according to the construction requirements.
2) And (4) making construction records for each dewatering well, and comparing the construction records with the previous measurement records to find the number of wells needing to be subjected to sediment cleaning in the wells.
3) Take out precipitation equipment from the well, insert the mixing chamber of this device in the sediment in the well that needs clearance sediment, under the equipment initial condition, mixing chamber and sediment upper strata in close contact with.
4) And injecting water into the well to ensure that the water quantity in the well submerges the mixing cavity and the water injection quantity is kept below the liquid level all the time in the process of sludge suction.
5) And opening the air compressor to enable high-pressure gas to enter the mixing cavity at a high speed through the air inlet pipeline, and flushing sediments at the bottom of the mixing cavity under the action of the high-pressure gas to enable the sediments, water and the high-pressure gas to be mixed in the mixing cavity.
6) Along with the continuous charging of high-pressure gas, because the bottom of the mixing cavity is contacted with the sediment to form a sealing plug, the pressure in the mixing cavity is continuously increased, and the mixture of the sediment, the water and the gas is forced to be ejected out of the discharge pipe into the sediment tank.
7) During the process of high-pressure air filling, the mixing cavity is repeatedly lifted, lowered and moved, so that the sediment enters the mixing cavity.
In the method, the water source for injecting water into the well comprises supernatant of the sludge tank.
The depth of the dewatering well can be calculated according to geological conditions for construction, the depth does not need to be increased in the calculated depth, and the cost is saved. Meanwhile, in the sediment added in the later period, the sediment is washed out by adopting a construction method, so that the precipitation water level required by the engineering is ensured, and the guarantee is provided for the engineering.
Drawings
FIG. 1 is an overall block diagram of the well flushing apparatus of the present invention;
FIG. 2 is a diagram of a mixing chamber configuration;
FIG. 3 is a bottom view of the mixing chamber.
In the figure: an air compressor 1, a high-pressure air delivery pipe 2, a sludge discharge pipe 3, a sludge tank 4, a mixing cavity 5, a slag suction chamber 51 and a stirring chamber 52.
Detailed Description
The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The well washing device shown in figures 1-3 comprises a sludge discharge pipe 3 and a sludge tank 4 arranged at the well mouth, wherein the top end of the sludge discharge pipe 3 is arranged in the sludge tank 4. And a water injection pipe is also arranged, and a water outlet of the water injection pipe is positioned in the well.
The bottom of the sludge discharge pipe 3 is hermetically connected with the mixing cavity 5; the mixing cavity 5 comprises an upper funnel-shaped slag suction chamber 51 and a lower straight cylindrical stirring chamber 52, wherein the slag suction chamber 51 and the stirring chamber 52 are integrally formed; the upper part of the mixing cavity 5 is also provided with an air connecting end which is connected with the air compressor 1 through a high-pressure air conveying pipe 2.
During the silt is inserted deeply when this device hybrid chamber uses, atmospheric pressure + hydraulic pressure through silt position form sealedly to the hybrid chamber under shed, utilize highly-compressed air to carry mud from hybrid chamber propelling movement to mud discharge pipe in, and then carry the sludge impoundment.
A well washing construction method is used for dredging a dewatering well, and the well washing construction method comprises the following specific steps:
1. numbering the dewatering wells one by one according to the construction requirements of the building engineering and the arrangement diagram of the dewatering wells, and measuring the depths of the dewatering wells one by one according to the construction requirements.
2. And (4) making construction records for each dewatering well, and finding the number of wells needing to be subjected to sediment cleaning in the wells by comparing the construction records with the previous measurement records.
3. Take out precipitation equipment from the well, insert the mixing chamber 5 of this device in the sediment in the well that needs the clearance sediment, under the equipment initial condition, make mixing chamber 5 and sediment upper strata contact.
4. And injecting water into the well to ensure that the water quantity in the well submerges the mixing cavity 5 and ensure that the equipment is always below the liquid level in the sludge suction process.
5. And opening the air compressor to enable high-pressure gas to enter the mixing cavity at a high speed through the air inlet pipeline, and flushing sediments at the bottom of the mixing cavity 5 under the action of the high-pressure gas to enable the sediments, water and the high-pressure gas to be mixed in the mixing cavity.
6. Along with the continuous charging of high-pressure gas, because the bottom of the mixing cavity is contacted with the sediment to form a sealing plug, the pressure in the mixing cavity is continuously increased, and the mixture of the sediment, water and gas is forced to be ejected out of the discharge pipe into the sediment tank.
7. During the process of high-pressure air filling, the mixing cavity is repeatedly lifted, lowered and moved, so that the sediment enters the mixing cavity.
In the construction of the invention, the water source for injecting water into the well can adopt common engineering water supply and can also comprise supernatant of the slag pool.
The construction method calculates the depth of the dewatering well according to geological conditions for construction, does not need to increase the depth in the calculated depth, and saves a large amount of labor cost, mechanical cost and material cost. Meanwhile, in the sediment added in the later period, the sediment is washed out by adopting a construction method, so that the precipitation water level is ensured, and the guarantee is provided for the engineering.
Claims (3)
1. The utility model provides a well washing device, includes sludge discharge pipe and sets up the sludge impoundment at the well head, and sludge discharge pipe top sets up in the sludge impoundment, characterized by: the water injection pipe is also arranged, and the water outlet of the water injection pipe is positioned in the well; the bottom of the sludge discharge pipe is hermetically connected with the mixing cavity; the mixing cavity comprises an upper funnel-shaped slag suction chamber and a straight cylindrical stirring chamber, and the slag suction chamber and the stirring chamber are integrally formed; the upper part of the mixing cavity is also provided with an air connecting end which is connected with an air compressor through an air pressure air conveying pipe.
2. A well washing construction method adopts the well washing device to carry out dredging on a precipitation well, and comprises the following steps:
1) numbering the dewatering wells one by one according to the construction requirements of the building engineering and the arrangement diagram of the dewatering wells, and measuring the depths of the dewatering wells one by one according to the construction requirements;
2) making construction records for each dewatering well, comparing the construction records with the previous measurement records, and finding the number of wells needing to be subjected to sediment cleaning in the wells;
3) taking the precipitation equipment out of the well, inserting a mixing cavity of the device into the sediment in the well, wherein the sediment needs to be cleaned, and the mixing cavity is in close contact with the upper layer of the sediment in the initial state of the equipment;
4) injecting water into the well to ensure that the water quantity in the well submerges the mixing cavity and the water injection quantity is kept below the liquid level all the time in the process of sludge suction;
5) opening an air compressor to enable high-pressure gas to enter the mixing cavity at a high speed through the gas inlet pipeline, flushing sediment at the bottom of the mixing cavity under the action of the high-pressure gas, and enabling the sediment, water and the high-pressure gas to be mixed in the mixing cavity;
6) along with the continuous charging of high-pressure gas, the bottom of the mixing cavity is contacted with the sediment to form a sealing plug, the pressure in the mixing cavity is continuously increased, and the mixture of the sediment, water and gas is forced to be ejected out of the discharge pipe into the sediment tank;
7) during the process of high-pressure air filling, the mixing cavity is repeatedly lifted, lowered and moved, so that the sediment enters the mixing cavity.
3. The well-flushing construction method of claim 2, wherein: in the step 4, a water source for injecting water into the well comprises supernatant of a sludge pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070289.XA CN111173465B (en) | 2020-01-21 | 2020-01-21 | Well flushing device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070289.XA CN111173465B (en) | 2020-01-21 | 2020-01-21 | Well flushing device and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111173465A true CN111173465A (en) | 2020-05-19 |
| CN111173465B CN111173465B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010070289.XA Active CN111173465B (en) | 2020-01-21 | 2020-01-21 | Well flushing device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111173465B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096323A (en) * | 2020-09-16 | 2020-12-18 | 湖北工建基础设施建设有限公司 | Construction system and method for slurry-free clear water pore-forming of cast-in-situ bored pile |
| CN114195253A (en) * | 2022-01-14 | 2022-03-18 | 四川旅发环保科技有限公司 | Plate type MBR (membrane bioreactor) membrane filtering device for fecal sewage treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004255305A (en) * | 2003-02-26 | 2004-09-16 | Pipe Bijin:Kk | Structure of lift pipe for sucking muddy sand and suction method |
| CN104514502A (en) * | 2014-12-11 | 2015-04-15 | 中铁十九局集团有限公司 | Surface precipitation deep well washing device |
| JP2015214842A (en) * | 2014-05-12 | 2015-12-03 | ＶＥＥｍａ株式会社 | Method and device for sucking deposit on bottom of well |
| CN205224062U (en) * | 2015-10-27 | 2016-05-11 | 天津市佰世恒建筑工程有限公司 | Precipitation well well washing device |
| CN207111014U (en) * | 2017-08-25 | 2018-03-16 | 北京地矿工程建设有限责任公司 | A kind of well washing equipment |
| CN208455653U (en) * | 2018-06-19 | 2019-02-01 | 中建八局第二建设有限公司 | One kind entering mud and returns spray formula dewatering well well-washing device |
| CN209539293U (en) * | 2019-01-21 | 2019-10-25 | 天津市佰世恒建筑工程有限公司 | A kind of high-pressure aerated well washing apparatus |
| CN211474058U (en) * | 2020-01-21 | 2020-09-11 | 中国二十二冶集团有限公司 | Well washing device |
-
2020
- 2020-01-21 CN CN202010070289.XA patent/CN111173465B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004255305A (en) * | 2003-02-26 | 2004-09-16 | Pipe Bijin:Kk | Structure of lift pipe for sucking muddy sand and suction method |
| JP2015214842A (en) * | 2014-05-12 | 2015-12-03 | ＶＥＥｍａ株式会社 | Method and device for sucking deposit on bottom of well |
| CN104514502A (en) * | 2014-12-11 | 2015-04-15 | 中铁十九局集团有限公司 | Surface precipitation deep well washing device |
| CN205224062U (en) * | 2015-10-27 | 2016-05-11 | 天津市佰世恒建筑工程有限公司 | Precipitation well well washing device |
| CN207111014U (en) * | 2017-08-25 | 2018-03-16 | 北京地矿工程建设有限责任公司 | A kind of well washing equipment |
| CN208455653U (en) * | 2018-06-19 | 2019-02-01 | 中建八局第二建设有限公司 | One kind entering mud and returns spray formula dewatering well well-washing device |
| CN209539293U (en) * | 2019-01-21 | 2019-10-25 | 天津市佰世恒建筑工程有限公司 | A kind of high-pressure aerated well washing apparatus |
| CN211474058U (en) * | 2020-01-21 | 2020-09-11 | 中国二十二冶集团有限公司 | Well washing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096323A (en) * | 2020-09-16 | 2020-12-18 | 湖北工建基础设施建设有限公司 | Construction system and method for slurry-free clear water pore-forming of cast-in-situ bored pile |
| CN114195253A (en) * | 2022-01-14 | 2022-03-18 | 四川旅发环保科技有限公司 | Plate type MBR (membrane bioreactor) membrane filtering device for fecal sewage treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111173465B (en) | 2023-11-14 |
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