CN111173465B - Well flushing device and using method thereof - Google Patents
Well flushing device and using method thereof Download PDFInfo
- Publication number
- CN111173465B CN111173465B CN202010070289.XA CN202010070289A CN111173465B CN 111173465 B CN111173465 B CN 111173465B CN 202010070289 A CN202010070289 A CN 202010070289A CN 111173465 B CN111173465 B CN 111173465B
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- China
- Prior art keywords
- well
- mixing cavity
- sediment
- water
- discharge pipe
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 55
- 239000013049 sediment Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000010276 construction Methods 0.000 claims abstract description 33
- 239000010802 sludge Substances 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000011049 filling Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000001556 precipitation Methods 0.000 claims description 13
- 239000002893 slag Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 238000006424 Flood reaction Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 flushing device, which comprises a sludge discharge pipe, a sludge pool and a water injection pipe, wherein the bottom of the sludge discharge pipe is connected with a mixing cavity in a sealing way; the upper part of the mixing cavity is also connected with an air compressor through a high-pressure air pipeline, and a well washing construction method is used for determining a well number for cleaning sediment in a well; taking out the dewatering equipment from the well, inserting the mixing cavity of the device into sediment in the well, and tightly contacting the mixing cavity with the upper layer of the sediment in the initial state of the equipment; the water injection device in the well is always kept below the liquid level; opening the air compressor to enable high-pressure gas to enter the mixing cavity at a high speed through the air inlet pipeline; along with the continuous filling of high-pressure gas, the pressure in the mixing cavity is continuously increased, so that the mixture of sediment, water and gas is forced to be ejected into the sediment tank from the discharge pipe; in the process of filling high-pressure air, the mixing cavity is repeatedly lifted, lowered and moved, so that sediment enters the mixing cavity.
Description
Technical Field
The invention relates to a construction method for reducing the thickness of precipitation well sediment at a construction site, in particular to a well washing device capable of rapidly reducing the thickness of sediment in a well and a construction method.
Background
At present, in the construction engineering, aiming at projects requiring precipitation engineering, continuous accumulation of sediment in a precipitation well is considered, so that the depth of the precipitation well is gradually reduced. Particularly under special geological conditions, after rainfall or geological drawing is loose and easy to run off, and the rainfall depth is more easy to be greatly reduced. Resulting in precipitation wells with water storage depths that will not meet engineering needs. Therefore, dredging is needed to be carried out on the precipitation well according to the accumulation condition of the sediment and the construction requirement. In the prior art, the dredging time is long, the operation is very inconvenient, the geological condition and the construction condition are not reliable, the dredging work is heavy, and the proper period cannot be determined. Often, conditions still occur that affect construction.
In the prior art, when dewatering and flushing, workers need to go down into the well to arrange equipment, the equipment is started to extract the mud at the bottom of the well when the equipment is used for stirring the sediment and water at the bottom of the well and the cement is uniform. The specific depth of the existing well flushing construction for the precipitation well is not clear, and the time when well flushing and dredging are needed is often determined according to construction experience. When the water well is frequently subjected to sediment, the water well cannot reduce the water level to the water level required by construction, and normal operation of construction is affected.
How to keep the limited depth of the dewatering well all the time in the actual construction process, and the dewatering condition required by the completion engineering is ensured, so that the normal operation of the engineering is a problem to be solved by engineering personnel.
Disclosure of Invention
During the continuous exploration, I have developed a tool and a construction method for washing out foundation pit sediment by means of simple tools.
The well washing device comprises a sludge discharge pipe, a sludge pool arranged at a well mouth, a water injection pipe and a water injection pipe, wherein the top end of the sludge discharge pipe is arranged in the sludge pool; the bottom of the sludge discharge pipe is connected with the mixing cavity in a sealing way; the mixing cavity comprises an upper funnel-shaped slag sucking chamber and a straight cylindrical stirring chamber, and the slag sucking 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 the air compressor through an air-air conveying pipe.
When the device is used, the mixing cavity is deeply inserted into the silt, the bottom of the mixing cavity is sealed by water pressure and atmospheric pressure, and the mud is pushed by high-pressure air. The device has simple pipeline, light overall weight of the well entering device, easy control and high dirt cleaning speed.
The invention also provides a well flushing construction method, which adopts the well flushing device to dredge the 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 layout of the dewatering wells, and measuring the depths of the dewatering wells one by one according to the construction requirements.
2) And (3) making construction records on each dewatering well, and comparing the previous measurement records to find the well number for cleaning the sediment in the well.
3) The dewatering equipment is taken out from the well, the mixing cavity of the device is inserted into the sediment in the well, which needs to be cleaned, and the mixing cavity is closely contacted with the upper layer of the sediment in the initial state of the equipment.
4) And water is injected into the well, so that the water quantity in the well is ensured to submerge the mixing cavity, and the water injection quantity is kept below the liquid level all the time in the sludge sucking process.
5) The air compressor is opened to enable high-pressure gas to enter the mixing cavity at a high speed through the air inlet pipeline, sediment at the bottom of the mixing cavity is flushed under the action of the high-pressure gas, and the sediment, water and the high-pressure gas are mixed in the mixing cavity.
6) Along with the continuous filling 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 sediment, water and gas mixture is forced to be ejected out of the discharge pipe into the sediment tank.
7) In the process of high-pressure air filling, the mixing cavity is repeatedly lifted, lowered and moved, so that sediment enters the mixing cavity.
In the above method, the water source for injecting water into the well comprises sludge pond supernatant.
The depth of the dewatering well can be constructed according to the geological condition calculated depth, the calculated depth is not required to be increased, and the cost is saved. Meanwhile, in the sediment increased in the later stage, the sediment is washed out by adopting a construction method, so that the precipitation water level required by engineering is ensured, and the guarantee is provided for the engineering.
Drawings
FIG. 1 is a block diagram of the overall construction of the well cleanout unit of the present invention;
FIG. 2 is a diagram of a mixing chamber configuration;
fig. 3 is a top view of the mixing chamber.
In the figure: an air compressor 1, a high-pressure air conveying pipe 2, a sludge discharge pipe 3, a sludge pool 4, a mixing cavity 5, a slag sucking chamber 51 and a stirring chamber 52.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A well washing device as shown in fig. 1-3, comprising a sludge discharge pipe 3 and a sludge tank 4 arranged at a wellhead, wherein the top end of the sludge discharge pipe 3 is arranged in the sludge tank 4. The well is also provided with a water injection pipe, and a water outlet of the water injection pipe is positioned in the well.
The bottom of the sludge discharge pipe 3 is connected with the mixing cavity 5 in a sealing way; the mixing cavity 5 comprises an upper funnel-shaped slag sucking chamber 51 and a lower straight cylindrical stirring chamber 52, and the slag sucking chamber 51 and the stirring chamber 52 are integrally formed; the upper part of the mixing chamber 5 is also provided with an air connection end which is connected with the air compressor 1 through a high-pressure air conveying pipe 2.
When the device is used, the mud and sand are deeply inserted, the lower opening of the mixing cavity is sealed by the atmospheric pressure and the hydraulic pressure of the position where the mud and sand are located, and the mud is pushed into the mud discharge pipe from the mixing cavity by using high-pressure air so as to be further conveyed to a mud pool.
The well flushing construction method adopts the well flushing device to dredge precipitation wells, and the specific construction method comprises the following steps:
1. numbering the dewatering wells one by one according to the construction requirements of the building engineering and the layout of the dewatering wells, and measuring the depths of the dewatering wells one by one according to the construction requirements.
2. And (3) making construction records on each dewatering well, and comparing the previous measurement records to find the well number for cleaning the sediment in the well.
3. The precipitation equipment is taken out from the well, the mixing cavity 5 of the device is inserted into the well sediment which needs to be cleaned, and the mixing cavity 5 is contacted with the sediment upper layer in the initial state of the equipment.
4. The water injection into the well ensures that the water quantity in the well floods the mixing cavity 5, and the water injection quantity ensures that the equipment is always under the liquid level in the sludge sucking process.
5. The air compressor is turned on to enable high-pressure gas to enter the mixing cavity at a high speed through the air inlet pipeline, sediment at the bottom of the mixing cavity 5 is flushed under the action of the high-pressure gas, and the sediment, water and the high-pressure gas are mixed in the mixing cavity.
6. Along with the continuous filling 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 sediment, water and gas mixture is forced to be ejected out of the discharge pipe into the sediment tank.
7. In the process of high-pressure air filling, the mixing cavity is repeatedly lifted, lowered and moved, so that sediment enters the mixing cavity.
In the construction of the invention, the water source for injecting water into the well can adopt general engineering water supply and can also comprise supernatant liquid of the slag pool.
The construction method has the advantages that the depth of the dewatering well is calculated according to geological conditions, the calculated depth is not required to be increased, and a great amount of labor cost, mechanical cost and material cost are saved. Meanwhile, in the sediment added in the later stage, the sediment is washed out by adopting a construction method, thereby guaranteeing the precipitation water level and providing guarantee for engineering.
Claims (2)
1. The well flushing construction method adopts a well flushing device which comprises a sludge discharge pipe and a sludge pool arranged at a well mouth, wherein the top end of the sludge discharge pipe is arranged in the sludge pool, and a water injection pipe is also arranged in the well; the method is characterized in that:
the bottom of the sludge discharge pipe is connected with the mixing cavity in a sealing way; the mixing cavity comprises an upper funnel-shaped slag sucking chamber and a straight cylindrical stirring chamber, and the slag sucking 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 the air compressor through an air-air conveying pipe,
the construction method for dredging the precipitation well by the well washing device comprises the following steps:
numbering dewatering wells one by one according to construction requirements of building engineering and a dewatering well layout, and measuring the depths of the dewatering wells one by one according to the construction requirements;
making construction records on each dewatering well, comparing the previous measurement records, and finding out a well number needing to clean sediment in the well;
taking out the dewatering equipment from the well, inserting the mixing cavity of the device into the sediment in the well, which needs to be cleaned, and tightly contacting the mixing cavity with the upper layer of the sediment in the initial state of the equipment;
injecting water into the well to ensure that the water in the well floods the mixing cavity, and the water injection amount is kept below the liquid level of the equipment all the time in the sludge sucking process;
opening an air compressor to enable high-pressure gas to enter the mixing cavity at a high speed through an air inlet pipeline, flushing sediment at the bottom of the mixing cavity under the action of the high-pressure gas, and mixing the sediment, water and the high-pressure gas in the mixing cavity;
along with the continuous filling 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 sediment, water and gas mixture is forced to be ejected out of the discharge pipe into the sediment tank;
in the process of high-pressure air filling, the mixing cavity is repeatedly lifted, lowered and moved, so that sediment enters the mixing cavity.
2. The well cleanup method according to claim 1, wherein: in step 4, the water source for injecting water into the well comprises supernatant of the 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111173465A CN111173465A (en) | 2020-05-19 |
| CN111173465B true 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 |
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| Country | Link |
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| CN (1) | CN111173465B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096323B (en) * | 2020-09-16 | 2022-04-22 | 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 |
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 |
| CN104514502A (en) * | 2014-12-11 | 2015-04-15 | 中铁十九局集团有限公司 | Surface dewatering 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 dewatering 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 |
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| Publication number | Publication date |
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| CN111173465A (en) | 2020-05-19 |
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