CN113265979A - Construction method for dredging shallow layer of thick-sludge river - Google Patents
Construction method for dredging shallow layer of thick-sludge river Download PDFInfo
- Publication number
- CN113265979A CN113265979A CN202110534337.0A CN202110534337A CN113265979A CN 113265979 A CN113265979 A CN 113265979A CN 202110534337 A CN202110534337 A CN 202110534337A CN 113265979 A CN113265979 A CN 113265979A
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- Prior art keywords
- sludge
- river channel
- pump
- dredging
- river
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
- E02B3/023—Removing sediments
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/8833—Floating installations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
Abstract
The invention discloses a construction method for dredging a shallow layer of a thick-sludge river channel, which comprises the following steps: thinning river sludge, extracting and discharging thin sludge, precipitating thin sludge and refluxing clear water; the construction method for dredging the shallow layer of the thick-sludge river can solve the problems that large-scale equipment is difficult to enter and stay in the river, the cost of medium-scale equipment is high and the like, and meanwhile, the construction is safe and reliable in quality, the construction efficiency is improved, the construction difficulty of dredging the river is reduced, and the dredging work of the river is more accurate and efficient.
Description
Technical Field
The invention relates to the technical field of river channel dredging, in particular to a construction method for thick-sludge river channel shallow layer dredging.
Background
Along with the development of the treatment of black water and odorous water riverways in China, the number of riverway dredging projects rises linearly, and the riverway sludge cleaning can effectively solve the problem of black water and odorous water in the riverways, enlarge the river channel overflowing section and improve the surrounding environment of the riverways.
The traditional river channel dredging modes include the following modes:
(1) emptying river channel water, excavating by adopting a wetland excavator, relaying, throwing to a loading point, and loading and transporting;
(2) arranging cofferdams in sections by adopting a wetland bulldozer, stacking in a concentrated manner, and then carrying out relay truck loading and transportation by adopting a hydraulic backhoe;
(3) constructing by using a cutter suction dredger;
and black, smelly water river course can all appear a large amount of little sections, little velocity of flow, inconvenient scheduling problem of traffic, use above-mentioned traditional desilting mode or the expense is high, or require big to the place to desilting inefficiency can't satisfy river course desilting work demand.
Disclosure of Invention
The invention aims to solve the problems and provides the construction method which can solve the problems that large-scale equipment is difficult to enter a river channel, medium-scale equipment is high in cost and the like, is safe and reliable in construction, improves the construction efficiency, reduces the construction difficulty of dredging the river channel, and enables the dredging work of the river channel to be more accurate and efficient.
In order to achieve the purpose, the technical scheme of the invention is as follows: a construction method for dredging a shallow layer of a thick-sludge river comprises the following steps:
a: thinning river sludge;
b: extracting and discharging the thin sludge;
c: precipitating the thin sludge;
d: refluxing clear water;
preferably, the river course includes that the river course treats the clearance district in step A, the river course has cleared up district and interim cistern, interim cistern is located the upper reaches that the clearance district has been cleared up in the river course, the river course has cleared up the upper reaches that the clearance district is treated in the river course, pour into the clear water into in the interim cistern, river course silt rarefaction passes through the clear water in the centrifugal pump extraction interim cistern, pours into the clear water in the interim cistern in the river course treats the clearance district, treats the river course and treats the interior sediment silt rarefaction of clearance district.
Preferably, the centrifugal pump is connected with the tee joint, wherein two ports of the tee joint are connected with a centrifugal pump water outlet pipe, the other port of the tee joint is connected with a centrifugal pump water inlet pipe, the centrifugal pump water outlet pipes extend into the river channel to be cleaned, and the other end of the centrifugal pump water inlet pipe extends into the temporary water storage tank.
Preferably, in the step B, the sludge is extracted through a sludge pump, the sludge pump is connected with a sludge pump packing auger, and the sludge pump packing auger discharges the sludge into a sedimentation tank outside the river channel through a sludge discharge pipe.
Preferably, the thin sludge is precipitated in the sedimentation tank in the step C, the sludge is precipitated to the lower part and the clean water is arranged above the thin sludge after the thin sludge is precipitated in the sedimentation tank, the clean water in the sedimentation tank is discharged through a submersible pump in the step D, and the submersible pump conveys the clean water into a temporary water storage tank through a submersible pump water pipe, so that the clean water in the sedimentation tank is recycled.
Preferably, the temporary reservoir is intercepted by a temporary cofferdam at one side close to the cleaned area of the river channel.
Preferably, the end parts of the two centrifugal pump water outlet pipes are respectively provided with a high-pressure water control valve, and the two centrifugal pump water outlet pipes are respectively arranged at two sides of the slurry pump.
Preferably, the mud pump buoyancy tanks are symmetrically arranged on two sides of the mud pump and enable the mud pump to float to the water surface.
The invention discloses a construction method for dredging a shallow layer of a thick-sludge river channel, which comprises the following steps: thinning river sludge, extracting and discharging thin sludge, precipitating thin sludge and refluxing clear water; the construction method for dredging the shallow layer of the thick-sludge river can solve the problems that large-scale equipment is difficult to enter and stay in the river, the cost of medium-scale equipment is high and the like, and meanwhile, the construction is safe and reliable in quality, the construction efficiency is improved, the construction difficulty of dredging the river is reduced, and the dredging work of the river is more accurate and efficient.
Drawings
FIG. 1 is a construction step diagram of the construction method for dredging the shallow layer of the thick sludge river.
FIG. 2 is a schematic diagram of the principle of the construction method for dredging the shallow layer of the thick-sludge river channel.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention.
In the figure: 1. a river channel area to be cleaned; 2. a sedimentation tank; 3. a sludge discharge pipe; 4. a slurry pump buoyancy tank; 5. a slurry pump; 6. a mud pump auger; 7. a water outlet pipe of the centrifugal pump; 8. a centrifugal pump; 9. a tee joint; 10. a water inlet pipe of the centrifugal pump; 11. temporarily coffering the dam; 12. a submersible pump water pipe; 13. a submersible pump; 14. a temporary reservoir; 15. clearing a river channel; 16. high-pressure water control valve.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Referring to the attached drawings 1-3, the technical scheme of the invention is a construction method for dredging a shallow layer of a thick-sludge river channel, which comprises the following steps:
a: thinning river sludge;
b: extracting and discharging the thin sludge;
c: precipitating the thin sludge;
d: refluxing clear water;
step A river course includes that the river course treats clearance district 1, river course has cleared up district 15 and interim cistern 14, interim cistern 14 is located the upper reaches that the river course has cleared up district 15, the river course has cleared up district 15 and is located the upper reaches that the clearance district 1 is treated in the river course, inject the clear water in the interim cistern 14, river course silt rarefaction is through clear water in the centrifugal pump 8 extraction interim cistern 14, and the clear water is injected into the river course and is treated in clearance district 1 in the interim cistern 14 to deposit silt rarefaction in treating clearance district 1 with the river course, the follow-up silt extraction of being convenient for is discharged.
Wherein, centrifugal pump 8 connects tee bend 9, centrifugal pump outlet pipe 7 is connected to two of them ports of tee bend 9, and centrifugal pump inlet tube 10 is connected to another port, two centrifugal pump outlet pipe 7 is to the river course treat that cleaning zone 1 extends in, the other end of centrifugal pump inlet tube 10 stretches into in the interim cistern 14, and centrifugal pump 8 passes through the clear water in the interim cistern 14 of tee bend extraction to pour into the clear water into the river course perpendicularly and treat cleaning zone 1, thereby make silt and water intensive mixing, the silt extraction of being convenient for.
B, extracting the sludge from the thin sludge in the step B through a sludge pump 5, wherein the sludge pump 5 is connected with a sludge pump packing auger 6, and the sludge pump packing auger 6 discharges the sludge into a sedimentation tank 2 at the outer side of the river channel through a sludge discharge pipe 3; because the sludge in the river channel to-be-cleaned area 1 is thinned, the sludge is easier to be extracted by the slurry pump 5, and the sludge is conveyed into the sludge discharge pipe 3 through the slurry pump auger 6 after being extracted and finally discharged into the sedimentation tank 2.
And D, precipitating the dilute sludge in the sedimentation tank 2 in the step C, layering the dilute sludge and clear water after the dilute sludge is precipitated in the sedimentation tank 2, wherein the sludge is precipitated to the lower part and the clear water is arranged at the upper part, discharging the clear water in the sedimentation tank 2 in the step D through a submersible pump 13, conveying the clear water into a temporary reservoir 14 through a submersible pump water pipe 12 by the submersible pump 13, and injecting the clear water in the temporary reservoir 14 into a river channel to-be-cleaned area again to ensure that the clear water in the sedimentation tank 2 is recycled, thereby saving energy and saving water sources.
Preferably, the temporary reservoir 14 is intercepted by the temporary cofferdam 11 at a side close to the cleared area 15 of the river channel, so as to prevent the clear water in the temporary reservoir 14 from flowing out.
As a preferable scheme, the end parts of the two centrifugal pump water outlet pipes 7 are respectively provided with a high-pressure water control valve 16, the two centrifugal pump water outlet pipes 7 are respectively arranged at two sides of the slurry pump 5, the high-pressure water control valves 16 at the end parts of the centrifugal pump water outlet pipes 7 can increase the water pressure in the centrifugal pump water outlet pipes 7, and the internal clear water is directly injected into the sludge in the region 1 to be cleaned in the river channel by means of the water pressure, so that the sludge thinning efficiency is improved, and the sludge is convenient to extract.
As a preferable scheme, the mud pump buoyancy tanks 4 are symmetrically arranged on two sides of the mud pump 5, and the mud pump buoyancy tanks 4 enable the mud pump 5 to float to the water surface, so that the mud pump 5 can slide on the water surface conveniently, the dredging position can be adjusted, and the dredging efficiency of the river channel can be improved.
The principle of the construction method for dredging the shallow layer of the thick-sludge river channel is as follows: clear water in an upstream temporary reservoir 14 is extracted through a centrifugal pump 8 and is injected into a river channel to-be-cleaned area 1 through a high-pressure water control valve 16, so that sludge in the river channel and the clear water are diluted and mixed; then the thinned sludge is pumped by a sludge pump 5 and discharged; the sludge is discharged into the sedimentation tank 2 to separate the sludge from water, and clear water is extracted by the submersible pump 13 and discharged into the temporary water storage tank 14, so that the clear water circulates in the temporary water storage tank 14, the river channel to-be-cleaned area 1 and the sedimentation tank 2, and water sources are saved;
when sludge near the slurry pump 5 is completely extracted, the slurry pump buoyancy tank 4 is pulled to enable the slurry pump 5 to move on the water surface to replace the sludge discharge position, and meanwhile, the centrifugal pump water outlet pipes 7 are moved to enable the two centrifugal pump water outlet pipes 7 to be always arranged on the two sides of the slurry pump 5, so that the slurry pump 5 can discharge sludge conveniently; the sludge discharging work is recycled.
The construction method for dredging the shallow layer of the thick-silt river channel can solve the problems that large equipment is difficult to enter and stay in the river channel, medium-sized equipment is high in cost and the like, is safe and reliable in construction, improves construction efficiency, reduces construction difficulty of dredging the river channel, and enables dredging work of the river channel to be more accurate and efficient.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A construction method for dredging a shallow layer of a thick-sludge river channel is characterized by comprising the following steps: the method comprises the following steps:
a: thinning river sludge;
b: extracting and discharging the thin sludge;
c: precipitating the thin sludge;
d: and (5) refluxing clear water.
2. The construction method for shallow dredging of the thick-sludge river channel according to claim 1, characterized in that: step A, the river channel comprises a river channel to be cleaned, a river channel cleaned and a temporary reservoir, the temporary reservoir is located at the upper reaches of the river channel cleaned, the river channel cleaned is located at the upper reaches of the river channel to be cleaned, clear water is injected into the temporary reservoir, river channel sludge is diluted through a centrifugal pump to extract clear water in the temporary reservoir, the clear water in the temporary reservoir is injected into the river channel to be cleaned, and the river channel is diluted by precipitation sludge in the river channel to be cleaned.
3. The construction method for shallow dredging of the thick-sludge river channel according to claim 2, characterized in that: the centrifugal pump is connected with the tee joint, wherein two ports of the tee joint are connected with a centrifugal pump water outlet pipe, the other port of the tee joint is connected with a centrifugal pump water inlet pipe, the centrifugal pump water outlet pipes extend into a river channel to-be-cleaned area, and the other end of the centrifugal pump water inlet pipe extends into the temporary water storage tank.
4. The construction method for shallow dredging of the thick-sludge river channel according to claim 1, characterized in that: and B, extracting the sludge from the thin sludge in the step B through a sludge pump, wherein the sludge pump is connected with a sludge pump packing auger, and the sludge pump packing auger discharges the sludge into a sedimentation tank outside the river channel through a sludge discharge pipe.
5. The construction method for shallow dredging of the thick-sludge river channel according to claim 1, characterized in that: and D, precipitating the dilute sludge in the sedimentation tank in the step C, precipitating the dilute sludge in the sedimentation tank, then precipitating the sludge to the lower part and the clear water to the upper part, discharging the clear water in the sedimentation tank in the step D through a submersible pump, and conveying the clear water into a temporary water storage tank through a submersible pump water pipe by the submersible pump so as to recycle the clear water in the sedimentation tank.
6. The construction method for shallow dredging of the thick-sludge river channel according to claim 2 or 5, characterized in that: the temporary reservoir is intercepted by a temporary cofferdam at one side close to the cleaned river channel.
7. The construction method for shallow dredging of the thick-sludge river channel according to claim 3, characterized in that: the end parts of the two centrifugal pump water outlet pipes are respectively provided with a high-pressure water control valve, and the two centrifugal pump water outlet pipes are respectively arranged at two sides of the slurry pump.
8. The construction method for shallow dredging of the thick-sludge river channel according to claim 4, characterized in that: mud pump buoyancy tanks are symmetrically arranged on two sides of the mud pump and enable the mud pump to float to the water surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110534337.0A CN113265979A (en) | 2021-05-17 | 2021-05-17 | Construction method for dredging shallow layer of thick-sludge river |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110534337.0A CN113265979A (en) | 2021-05-17 | 2021-05-17 | Construction method for dredging shallow layer of thick-sludge river |
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| CN113265979A true CN113265979A (en) | 2021-08-17 |
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| CN202110534337.0A Pending CN113265979A (en) | 2021-05-17 | 2021-05-17 | Construction method for dredging shallow layer of thick-sludge river |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960814A (en) * | 2022-06-24 | 2022-08-30 | 广东省第四建筑工程有限公司 | Method for conveying solid sludge of deep foundation pit |
| CN115045359A (en) * | 2022-06-20 | 2022-09-13 | 中电建十一局工程有限公司 | Simple dredging equipment |
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| CN109056761A (en) * | 2018-08-17 | 2018-12-21 | 上海宝冶集团有限公司 | Channel cleanout method |
| CN110644553A (en) * | 2019-08-14 | 2020-01-03 | 中国电建集团华东勘测设计研究院有限公司 | Dredging system and environment-friendly dredging method based on mobile platform |
| CN111519685A (en) * | 2020-05-11 | 2020-08-11 | 李冰梅 | River channel dredging structure and dredging method thereof |
| CN111764455A (en) * | 2020-07-02 | 2020-10-13 | 尹东 | Intelligent multistage river channel dredging method |
| CN111908748A (en) * | 2020-08-03 | 2020-11-10 | 中建水务环保有限公司 | River channel dredging method |
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2021
- 2021-05-17 CN CN202110534337.0A patent/CN113265979A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056761A (en) * | 2018-08-17 | 2018-12-21 | 上海宝冶集团有限公司 | Channel cleanout method |
| CN110644553A (en) * | 2019-08-14 | 2020-01-03 | 中国电建集团华东勘测设计研究院有限公司 | Dredging system and environment-friendly dredging method based on mobile platform |
| CN111519685A (en) * | 2020-05-11 | 2020-08-11 | 李冰梅 | River channel dredging structure and dredging method thereof |
| CN111764455A (en) * | 2020-07-02 | 2020-10-13 | 尹东 | Intelligent multistage river channel dredging method |
| CN111908748A (en) * | 2020-08-03 | 2020-11-10 | 中建水务环保有限公司 | River channel dredging method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045359A (en) * | 2022-06-20 | 2022-09-13 | 中电建十一局工程有限公司 | Simple dredging equipment |
| CN114960814A (en) * | 2022-06-24 | 2022-08-30 | 广东省第四建筑工程有限公司 | Method for conveying solid sludge of deep foundation pit |
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Application publication date: 20210817 |
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