CN110359419B - Rapid river channel dredging method - Google Patents
Rapid river channel dredging method Download PDFInfo
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- CN110359419B CN110359419B CN201910649543.9A CN201910649543A CN110359419B CN 110359419 B CN110359419 B CN 110359419B CN 201910649543 A CN201910649543 A CN 201910649543A CN 110359419 B CN110359419 B CN 110359419B
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- sludge
- fixed wall
- sludge pump
- layer cloth
- isolation layer
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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
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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
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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
Abstract
The invention discloses a rapid river channel dredging method, which belongs to the technical field of river channel cleaning, and the technical scheme is characterized by comprising the following steps: step S1: the cofferdam is characterized in that a first fixed wall and a second fixed wall are arranged at two ends of the length of a river reach to be cleaned, and the distance between the first fixed wall and the water surface is larger than the full-load draft of the largest navigable ship in the river channel; step S2: laying an isolation layer cloth, laying the isolation layer cloth in a riverway needing to be cleaned, wherein an isolation cavity is formed among the isolation layer cloth, the first fixed wall, the second fixed wall and a riverbed; step S3: impacting the sludge, wherein the sludge pump impacts the sludge in the isolation cavity to stir water and the sludge in the isolation cavity; step S4: pumping out sludge, namely pumping out a mixed liquid of water and sludge in the isolation cavity by using a sludge pump; step S5: and disassembling the first fixed wall and the second fixed wall, and then recovering the isolation layer cloth. The invention has the effect that the channel does not need to be closed when the sludge is cleaned.
Description
Technical Field
The invention relates to the technical field of river channel cleaning, in particular to a rapid river channel dredging method.
Background
River channel siltation increasingly affects the normal performance of various functions such as flood control, waterlogging drainage, irrigation, water supply, navigation and the like, and river channel dredging engineering is carried out for recovering the normal functions of the river channel and promoting the rapid and continuous development of the economy and society. The river course becomes deep and wide through treatment, the river water becomes clear, the production conditions and the living environment of the masses are obviously improved, and the aims of 'clear water, smooth river, green bank and beautiful landscape' are achieved.
At present, the chinese patent with publication number CN108824350A discloses a comprehensive treatment method for river channels, which comprises the following steps: intercepting, namely, manufacturing intercepting dikes at two ends of the river channel to intercept the river channel; pumping water, namely pumping out the river water in the dredging section of the river channel; dredging, namely, fully flushing the river bottom by a high-pressure water gun and mixing the river bottom with sludge to form sludge-water mixed liquid, and pumping the sludge-water mixed liquid into a buffer pool; separating, namely separating the mud-water mixed liquid in the buffer tank into flowing water, impurities, sand particles and sludge by adopting a multistage filtering system; treating, and firing part of the sandstone particles and the sludge into the embankment brick; and (4) through flow, and removing the cut-off embankment. The high-pressure water flushes and cleans the silt quickly, the cleaning is complete, and the time and the labor are saved; meanwhile, water resources of a non-dredging section are utilized, and water storage pressure at the upstream of the river is also reduced; the sand and stone particles and the sludge are used for manufacturing the dike protection bricks, so that the two banks of the river are protected, and ecological restoration is facilitated. The treatment method is efficient, environment-friendly, resource-saving and beneficial to the continuous restoration of river ecology.
The above prior art solutions have the following drawbacks: when dredging, the river channel needs to be closed, so that ships cannot pass.
Disclosure of Invention
The invention aims to provide a rapid river channel dredging method which can be used for cleaning sludge on the premise of not closing a river channel.
In order to achieve the purpose, the invention provides the following technical scheme: a rapid river channel dredging method comprises the following steps: step S1: the cofferdam comprises a cofferdam, wherein first fixed walls are arranged at two ends of the length of a river section to be cleaned, second fixed walls are arranged at two sides of the width direction of the river section to be cleaned, the first fixed walls and the second fixed walls are mutually abutted, and the distance between the first fixed walls and the water surface is larger than the ship full-load draft of the largest navigable ship in the river channel; step S2: laying an isolation layer cloth, laying the isolation layer cloth in a riverway needing to be cleaned, wherein two ends of the isolation layer cloth in the length direction are fixedly connected to a first fixed wall, two ends of the isolation layer cloth in the width direction are fixedly connected to a second fixed wall, and isolation cavities are formed among the isolation layer cloth, the first fixed wall, the second fixed wall and a riverbed; step S3: the sludge is impacted, a water outlet of a sludge pump is communicated with the isolation cavity, a water inlet of the sludge pump is communicated with a water source, and the sludge pump impacts the sludge in the isolation cavity to stir water and the sludge in the isolation cavity; step S4: pumping out sludge, namely pumping out a mixed liquid of water and sludge in the isolation cavity by using a sludge pump; step S5: and disassembling the first fixed wall and the second fixed wall, and then recovering the isolation layer cloth.
By adopting the technical scheme, an isolation cavity is formed among the isolation layer cloth, the first fixed wall, the second fixed wall and the riverbed, the sludge in the isolation cavity is impacted by utilizing the impact of the first sludge pump, so that the sludge and water are mixed, and then the sludge pump is utilized to pump out the mixed liquid of the water and the sludge in the isolation cavity, so that the sludge in the riverway is cleaned; because the interval between the first fixed wall and the second fixed wall and the water surface is larger than the full-load draught of the largest navigable ship in the channel, the river channel can normally pass during dredging.
The invention is further configured to: in step S1, the first fixed wall and the second fixed wall are both made of stacked bagged sand.
Through adopting above-mentioned technical scheme, utilize sand and soil in bags to pile up first fixed wall and second fixed wall, make the structure of first fixed wall and second fixed wall more stable to also make first fixed wall and second fixed wall more convenient, it is more convenient to make the river course clearance.
The invention is further configured to: the two ends of the isolation layer cloth in the length direction are arranged in the first fixed wall, the two ends of the isolation layer cloth in the width direction are arranged in the second fixed wall, the isolation layer is arranged on the bagged sandy soil when the bagged sandy soil is stacked in the step S1, and then the bagged sandy soil is stacked on the isolation layer cloth.
Through adopting above-mentioned technical scheme, utilize sand and soil in bags to compress tightly the barrier layer cloth to realized barrier layer cloth fixed connection in first fixed wall and second fixed wall, made between first fixed wall and the barrier layer cloth and the connection structure between second fixed wall and the barrier layer cloth simple firm more.
The invention is further configured to: a plurality of go-between of barrier layer cloth edge fixed connection, in step S1, it has a plurality of connecting plates to inlay in first fixed wall and the second fixed wall, connecting plate one end fixed connection couple, the couple is outside keeping apart the chamber towards, the go-between is colluded and is hung on the couple.
Through adopting above-mentioned technical scheme, utilize connecting plate fixed connection isolation layer cloth to further increased the isolation layer cloth in first fixed wall and second fixed wall connection structure's intensity.
The invention is further configured to: the inlet of the second sludge pump in the step S3 is communicated with the outlet of the first sludge pump, the inlet of the first sludge pump and the outlet of the second sludge pump are respectively located at two sides of the width direction of the isolation chamber, one of the first sludge pump and one of the second sludge pump which are communicated with each other are a group, and the isolation chamber is provided with a plurality of groups of sludge pumps along the length direction.
Through adopting above-mentioned technical scheme, first sludge pump takes out water and mud and then carries to the second sludge pump in, utilizes the second sludge pump to strike the water and the silt of keeping apart the intracavity to make the rivers of keeping apart the intracavity portion flow to the one side at first sludge pump place from one side of second sludge pump, accelerated the flow of keeping apart intracavity rivers, the rivers that flow fast can be washed away once more, make the faster mixture of the water and the silt of keeping apart the intracavity.
The invention is further configured to: when the second fixed wall is stacked in step S1, a communicating pipe is embedded in the second fixed wall, the communicating pipe communicates the inside and the outside of the isolation chamber, and the communicating pipe communicates with the inlet of the first sludge pump or the outlet of the second sludge pump.
Through adopting above-mentioned technical scheme, inlay communicating pipe in the second fixed wall, make communicating pipe and second fixed wall connection structure inseparabler, reduce silt and flow out from the gap between communicating pipe and the second fixed wall.
The invention is further configured to: before step S4, a sludge tank is opened on the river bank where the river reach needs to be cleaned, and in step S4, the mixed liquid of the sludge and the water in the isolation chamber is discharged into the sludge tank.
Through adopting above-mentioned technical scheme, the mixed liquid of silt and water is discharged into the mud pond, is convenient for to the collection of mud.
The invention is further configured to: in step S4, the outlet of the first sludge pump is separated from the inlet of the second sludge pump, the outlet of the first sludge pump is communicated with the sludge tank, and the inlet of the second sludge pump is communicated with the river outside the isolation tank.
Through adopting above-mentioned technical scheme, when the mixed liquid of discharge silt and water, utilize the second sludge pump to carry the water in the river course to keep apart the intracavity to avoid keeping apart the chamber and squashed by water pressure and lead to partial mud can't discharge.
In conclusion, the invention has the following beneficial effects:
firstly, an isolation cavity is formed among the isolation layer cloth, the first fixed wall, the second fixed wall and the riverbed, water in the river reach and water in the isolation cavity are isolated, the water in the isolation cavity can be stirred, and finally, silt and water are discharged;
secondly, a first fixed wall and a second fixed wall are built in a stacked mode by utilizing bagged sandy soil, a connecting plate is embedded in the first fixed wall and the second fixed wall in the stacking process, the isolation layer cloth is connected with the connecting plate, and then the isolation layer cloth is pressed by utilizing the bagged sandy soil to further stabilize the isolation layer cloth;
third, first sludge pump takes out water and mud and then carries to the second sludge pump in, utilizes the second sludge pump to strike the water and the silt of keeping apart the intracavity to make the inside rivers of keeping apart chamber flow to one side at first sludge pump place from one side of second sludge pump, accelerated the flow of keeping apart intracavity rivers, the rivers that flow fast can be washed away once more, make the faster mixture of the water and the silt of keeping apart the intracavity.
Drawings
FIG. 1 is a perspective view of the present embodiment;
fig. 2 is a cross-sectional view for showing the communication pipe in the present embodiment;
fig. 3 is a cross-sectional view of the present embodiment for showing the connecting plate.
Reference numerals: 1. a first fixed wall; 2. a second fixed wall; 3. bagging sandy soil; 4. a connecting plate; 5. hooking; 6. a plate body; 7. a communicating pipe; 8. an isolation chamber; 9. an isolation layer cloth; 10. a connecting ring; 11. a sludge pump; 12. a first sludge pump; 13. a second sludge pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): a rapid river channel dredging method comprises the following steps:
step S1: the cofferdam, as shown in fig. 1, is provided with first fixed walls 1 at both ends of the length of the river reach to be cleaned, and is provided with second fixed walls 2 at both sides of the width direction of the river reach to be cleaned. The first fixing wall 1 and the second fixing wall 2 are fixedly connected to each other. A rectangular area is enclosed by the first fixed wall 1 and the second fixed wall 2. The first fixed wall 1 and the second fixed wall 2 are both formed by utilizing bagged sandy soil 3 in a stacked mode. The first fixed wall 1 and the second fixed wall 2 are equal in height and the distance between the first fixed wall 1 and the second fixed wall 2 and the water surface is larger than 5% of the full-load draft of the largest navigable ship in the channel, so that the ship is prevented from colliding with the first fixed wall 1 and the second fixed wall 2 when the ship navigates in the covered river reach.
As shown in fig. 3, when the first fixed wall 1 and the second fixed wall 2 are stacked by using the bagged sandy soil 3, a plurality of connection plates 4 are embedded in the first fixed wall 1 and the second fixed wall 2. The connecting plate 4 comprises a plate body 6 and one end hook 5 fixedly connected to the plate body 6. The first layer of bagged sandy soil 3 is firstly stacked on the riverbed, then the highest point of the first layer of bagged sandy soil 3 is used as a reference for stacking, and then the fixed connecting plates 4 are evenly placed along the length direction of the first fixed wall 1 or the second fixed wall 2. The interval between two adjacent connecting plates 4 is less than 5 meters, and when the connecting plates 4 are placed, one end of the fixedly connected hook 5 faces the outside of the first fixed wall 1 or the second fixed wall 2, and the hook 5 bends downwards.
As shown in fig. 2, when the second fixed wall 2 is constructed by stacking the bagged sandy soil 3, a plurality of communicating pipes 7 are embedded in the second fixed wall 2, and the communicating pipes 7 are glass fiber reinforced plastic sand inclusion pipes which communicate the inside and the outside of the second fixed wall 2. One end of the communicating pipe 7, which is positioned outside the second fixed wall 2, is fixedly connected with a parent body of a quick connector.
Step S2: laying an isolation layer cloth 9, laying the isolation layer cloth 9 on the rectangular region enclosed by the first fixed wall 1 and the second fixed wall 2, and forming an isolation cavity 8 between the isolation layer cloth 9, the first fixed wall 1, the second fixed wall 2 and the riverbed. 9 marginal fixed connection of barrier layer cloth go-between 10, arrange first fixed wall 1 in with the length direction both ends of barrier layer cloth 9 on, the second fixed wall 2 is arranged in at 9 width direction's of barrier layer cloth both ends, go-between 10 colludes on couple 5, utilizes 4 fixed connection barrier layer cloth 9 of connecting plate, has increased barrier layer cloth 9 in first fixed wall 1 and 2 connection structure's of second fixed wall intensity. In order to further increase the strength of the connection structure between the isolation layer cloth 9 and the first fixed wall 1 and the strength of the connection structure between the isolation layer cloth 9 and the second fixed wall 2, the bagged sandy soil 3 is continuously stacked at the position where the isolation layer cloth 9 is positioned on the first fixed wall 1 or the second fixed wall 2, and the isolation layer cloth 9 is compressed by utilizing the bagged sandy soil 3, so that the isolation layer cloth 9 is embedded in the first fixed wall 1 and the second fixed wall 2, and the connection structures between the first fixed wall 1 and the isolation layer cloth 9 and between the second fixed wall 2 and the isolation layer cloth 9 are more simple and stable.
Step S3: impact silt, be provided with multiunit sludge pump 11 along keeping apart 8 length direction in chamber, every group sludge pump 11 includes first sludge pump 12 and second sludge pump 13. The inlet tube fixedly connected with quick-operation joint's of first sludge pump 12 public body, the inlet tube of first sludge pump 12 utilizes quick-operation joint and keeps apart the communicating pipe 7 butt joint and the intercommunication of 8 one sides in chamber. The outlet pipe of the second sludge pump 13 is fixedly connected with a male body of a quick connector, and the outlet pipe of the second sludge pump 13 is butted and communicated with a communicating pipe 7 on one side of the isolation cavity 8 far away from the first sludge pump 12 by utilizing the quick connector. The water inlet pipe of the second sludge pump 13 is communicated with the water outlet pipe of the first sludge pump 12 through a quick connector.
The first sludge pump 12 and the second sludge pump 13 are started. First sludge pump 12 takes out water and mud and then carries to second sludge pump 13, utilizes second sludge pump 13 to strike the water and the silt of keeping apart in the chamber 8 to make the inside rivers of keeping apart chamber 8 from one side flow direction one side at first sludge pump 12 place of second sludge pump 13, accelerated the flow of rivers in keeping apart chamber 8, the rivers of quick flow can be washed away once more, make the water and the more quick mixture of silt in keeping apart the chamber 8.
In the process of steps S1 to S3, a sludge pond is provided on the river bank where the river bank is to be cleaned.
Step S4: and pumping away the sludge, wherein the water inlet pipe of the second sludge pump 13 is separated from the water outlet pipe of the first sludge pump 12, the outlet of the first sludge pump 12 is communicated with a sludge pond, and the inlet of the second sludge pump 13 is communicated with the river section outside the isolation cavity 8. Start first sludge pump 12 and second sludge pump 13, utilize first sludge pump 12 to carry the water in the river course to the mud pond in, utilize second sludge pump 13 to carry the water in the river course to keep apart in the chamber 8 to avoid keeping apart chamber 8 and squashed by water pressure and lead to the unable discharge of partial mud.
Step S5: the first fixing wall 1 and the second fixing wall 2 are disassembled, and then the separation layer cloth 9, the connecting plate 4 and the communicating pipe 7 are recovered.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. A rapid river channel dredging method is characterized in that: the method comprises the following steps: step S1: the cofferdam comprises a cofferdam, wherein first fixed walls (1) are arranged at two ends of the length of a river section to be cleaned, second fixed walls (2) are arranged at two sides of the river section to be cleaned in the width direction, the first fixed walls (1) and the second fixed walls (2) are mutually abutted, and the distance between the first fixed walls (1) and the water surface is larger than the full-load draft of the largest navigable ship in the river channel; step S2: laying an isolation layer cloth (9), laying the isolation layer cloth (9) in a river channel to be cleaned, wherein two ends of the isolation layer cloth (9) in the length direction are fixedly connected to a first fixed wall (1), two ends of the isolation layer cloth (9) in the width direction are fixedly connected to a second fixed wall (2), and an isolation cavity (8) is formed among the isolation layer cloth (9), the first fixed wall (1), the second fixed wall (2) and a river bed; step S3: the sludge is impacted, a water outlet of a sludge pump (11) is communicated with the isolation cavity (8), a water inlet of the sludge pump (11) is communicated with a water source, and the sludge pump (11) impacts the sludge in the isolation cavity (8) to enable water and the sludge in the isolation cavity (8) to be muddy; step S4: pumping out sludge, namely pumping out mixed liquid of water and sludge in the isolation cavity (8) by using a sludge pump (11); step S5: the first fixed wall (1) and the second fixed wall (2) are disassembled, and then the isolation layer cloth (9) is recovered.
2. The rapid river channel dredging method according to claim 1, wherein: in step S1, the first fixed wall (1) and the second fixed wall (2) are both made of stacked bagged sandy soil (3).
3. The rapid river channel dredging method according to claim 2, wherein: the two ends of the isolation layer cloth (9) in the length direction are arranged in the first fixed wall (1), the two ends of the isolation layer cloth (9) in the width direction are arranged in the second fixed wall (2), the isolation layer cloth (9) is arranged on the bagged sandy soil (3) when the bagged sandy soil (3) is stacked in the step S1, and then the bagged sandy soil (3) is stacked on the isolation layer cloth (9).
4. The rapid river channel dredging method according to claim 2, wherein: a plurality of go-between (10) of isolation layer cloth (9) edge fixed connection, in step S1, it has a plurality of connecting plates (4) to inlay in first fixed wall (1) and second fixed wall (2), connecting plate (4) one end fixed connection couple (5), couple (5) are outside keeping apart chamber (8) towards, go-between (10) collude and hang on couple (5).
5. The rapid river channel dredging method according to claim 2, wherein: the sludge pump (11) in the step S3 comprises a first sludge pump (12) and a second sludge pump (13), the inlet of the second sludge pump (13) is communicated with the outlet of the first sludge pump (12), the inlet of the first sludge pump (12) and the outlet of the second sludge pump (13) are respectively positioned at two sides of the width direction of the isolation cavity (8), the first sludge pump (12) and the second sludge pump (13) are communicated with each other, the first sludge pump (12) and the second sludge pump (13) are a group, and the isolation cavity (8) is provided with a plurality of groups of sludge pumps (11) along the length direction.
6. The rapid river channel dredging method according to claim 5, wherein: when the second fixed wall (2) is stacked in the step S1, the communicating pipe (7) is embedded in the second fixed wall (2), the isolating chamber (8) is communicated with the inside and the outside through the communicating pipe (7), and the communicating pipe (7) is communicated with the inlet of the first sludge pump (12) or the outlet of the second sludge pump (13).
7. The rapid river channel dredging method according to claim 6, wherein: before step S4, a sludge pond is arranged on the river bank of the river reach to be cleaned, and in step S4, the mixed liquid of the sludge and the water in the isolation cavity (8) is discharged into the sludge pond.
8. The rapid river channel dredging method according to claim 7, wherein: in step S4, an outlet of the first sludge pump (12) is separated from an inlet of the second sludge pump (13), an outlet of the first sludge pump (12) is communicated with a sludge tank, and an inlet of the second sludge pump (13) is communicated with a river reach outside the isolation tank.
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| CN201910649543.9A CN110359419B (en) | 2019-07-18 | 2019-07-18 | Rapid river channel dredging method |
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| CN201910649543.9A CN110359419B (en) | 2019-07-18 | 2019-07-18 | Rapid river channel dredging method |
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| CN110359419B true CN110359419B (en) | 2021-04-20 |
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| CN111519678A (en) * | 2020-04-14 | 2020-08-11 | 滨州市金毅设备有限公司 | River sludge discharging construction method |
| CN113802639B (en) * | 2021-10-23 | 2022-12-06 | 黑龙江鸿旭工程项目管理有限公司 | System and method for cleaning river silt for hydraulic engineering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3702302B2 (en) * | 2000-03-31 | 2005-10-05 | 下関市 | Sludge removal equipment |
| JP2005002743A (en) * | 2003-06-16 | 2005-01-06 | Shinichiro Hayashi | Suction method and covering method for deposit |
| US7264713B2 (en) * | 2003-09-03 | 2007-09-04 | Thomas Kryzak | Apparatus, system and method for remediation of contamination |
| CN203540148U (en) * | 2013-09-23 | 2014-04-16 | 常州东方特钢有限公司 | Sewage pumping and back-flushing device |
| CN104895005B (en) * | 2015-03-20 | 2017-04-19 | 上海建为环保科技股份有限公司 | Method of treating river channel pollution through bottom mud active covering |
| CN104831681B (en) * | 2015-04-14 | 2016-06-15 | 成都八八五生物科技发展有限公司 | A kind of lake water partition apparatus and partition method |
| CN108824350A (en) * | 2018-06-06 | 2018-11-16 | 上海景铭建设发展有限公司 | A kind of comprehensive processing method in river |
| CN109455890B (en) * | 2018-11-05 | 2023-09-22 | 河海大学 | Polluted bottom mud in-situ covering net without disturbance of floating mud and paving method thereof |
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