CN111519734A - Silt dredging method for river channel hidden culvert - Google Patents
Silt dredging method for river channel hidden culvert Download PDFInfo
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- CN111519734A CN111519734A CN202010329923.7A CN202010329923A CN111519734A CN 111519734 A CN111519734 A CN 111519734A CN 202010329923 A CN202010329923 A CN 202010329923A CN 111519734 A CN111519734 A CN 111519734A
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- screening
- sludge
- culvert
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/10—Wheeled apparatus for emptying sewers or cesspools
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides a silt removing method in a river channel hidden culvert, which is characterized in that a temporary device for screening silt is constructed in the hidden culvert, and the temporary device comprises a peripheral support structure, a steel wire screen, an anti-seepage structure and an inclined strut, which are built on the bottom surface of the hidden culvert; the peripheral supporting structure forms a sludge screening pool, and a certain interval is formed between the screening pool and the side wall of the hidden culvert so as to allow workers to pass through; the steel wire screen is used as a screening screen of the screening device and fixed on a certain height of the peripheral support structure, and the screening tank is divided into an upper layer and a lower layer, wherein the upper layer is a retention space of the construction domestic garbage, and the lower layer is a sludge tank; arranging the seepage-proofing structure outside the peripheral support structure; and the wall surface of the peripheral supporting structure below the steel wire screen is provided with an opening for the introduction of a mud suction pipe of the ground dredging vehicle. The invention can realize automatic separation of sludge and building life and provide support for directly absorbing, transporting and transferring the sludge by the sludge removing vehicle.
Description
Technical Field
The invention relates to a silt removing method in a river channel hidden culvert, which is suitable for the technical field of screening treatment of silt and building domestic garbage in river channel hidden culvert dredging engineering.
Background
Along with the development of urbanization, the cleaning of sludge in the hidden culvert of the river channel becomes a difficult problem in the treatment of modern cities. Particularly, in recent years, the urbanization is rapidly developed, and industrial and domestic sewage flows into the culvert in a large quantity, so that the phenomenon that the river channel culvert is clogged by silt and some domestic garbage is more serious. Because the inside siltation of river course dark culvert has reduced the flood section, influences the flood capability in river course, has the risk that leads to urban waterlogging, seriously threatens urban drainage system's safety simultaneously, therefore the clearance work of river course dark culvert is imperative.
In the dredging engineering of the river channel hidden culvert, not only sludge is deposited, but also construction waste and household garbage exist. In the actual dredging process, due to the problems, if a dredging vehicle is directly adopted to suck sludge mixed with construction waste and household waste into the tank body by utilizing pumping equipment, a bottom sludge treatment plant generally does not directly receive the sludge, and the impurities need to be screened in the dredging process. Further sending the building and the household garbage to a garbage treatment plant, and sending the sludge to a bottom sludge treatment plant. Taking Shenzhen as an example, the problems are encountered in dredging projects such as Feng Pong river, Xinzhou river, Huanggang river, penholder mountain river section and the like.
The existing river channel dredging and screening device is generally a complete machine, the transportation, the installation and the disassembly are more complex, and the engineering investment is higher. For the dredging projects of the hidden culvert type, the whole equipment cannot be hoisted and conveyed into the culvert due to the size limitation of an operation surface or a working well, and the sludge and the construction domestic garbage are conveyed out of the hidden culvert and then are subjected to secondary screening by manual or mechanical equipment, so that the construction procedures are increased. The process needs a great deal of manpower, so that the development of a temporary device for screening the sludge in the hidden culvert of the river channel is necessary.
Disclosure of Invention
The invention aims to develop a silt removing method for a river channel culvert, which can realize automatic separation of silt and building life and solve the problems in the prior art. Therefore, the invention adopts the following technical scheme:
a silt dredging method for river channel hidden culverts is characterized in that a temporary device for screening silt is constructed in the hidden culverts, and the temporary device comprises a peripheral supporting structure, a steel wire screen, an anti-seepage structure and inclined struts, wherein the peripheral supporting structure, the steel wire screen, the anti-seepage structure and the inclined struts are built on the bottom surface of the hidden culverts; the peripheral supporting structure forms a sludge screening pool, and a certain interval is formed between the screening pool and the side wall of the hidden culvert so as to allow workers to pass through; the steel wire screen is used as a screening screen of the screening device and fixed on a certain height of the peripheral support structure, and the screening tank is divided into an upper layer and a lower layer, wherein the upper layer is a retention space of the construction domestic garbage, and the lower layer is a sludge tank; arranging the seepage-proofing structure outside the peripheral support structure; inclined struts or throwing struts are connected between the periphery of the peripheral support structure and the bottom surface of the hidden culvert; the wall surface of the peripheral supporting structure below the steel wire screen is provided with an opening for introducing a mud suction pipe of a dredging vehicle on the ground;
during dredging construction, sludge mixed with the building domestic garbage in the hidden culvert is directly poured into the screening tank in the hidden culvert manually or mechanically, wherein the sludge flows into a sludge tank below under the action of gravity, and the building domestic garbage is retained on the screening filter screen; the mud suction pipe of the ground dredging vehicle extends into the screening pool through the opening of the opening wall surface, and the mud treatment work is continuously carried out; and cleaning the domestic garbage of the workers and the buildings above the steel wire screen at regular intervals.
Further, the temporary device is arranged at the position of a box culvert opening hole close to the working face or the position of an existing inspection well.
Furthermore, the anti-seepage structure can adopt a PVC plastic film and can be adjusted according to the building materials on site, and the aim of the anti-seepage structure is to ensure that the structure does not generate sludge leakage.
Further, the volume of the screening pool at least meets 2-3 times of the bucket capacity of the excavator; a certain height difference exists between the height h1 of the screening pool and the height h2 of the steel wire screen, so that the volume of the screening pool above the steel wire screen is not less than 1 time of the bucket capacity of the excavator.
The peripheral supporting structure of the invention can adopt a brick structure, a concrete structure or a stone structure and the like.
The steel wire screen can also adopt a grid system made of other materials, and the size of the mesh of the steel wire screen is determined according to the size of the building domestic garbage surveyed on site.
The sludge screening device frame and the screening pool can be formed through a brick-built structure, the steel wire screen forms the screen structure of the sludge screening device, the PVC plastic film is used for preventing leakage in an auxiliary mode, the anti-sliding and anti-overturning performance of the structure is improved by arranging the throwing support (inclined support), and the temporary device which is low in cost and convenient to build, dismantle and carry out dredging construction in a hidden culvert is formed. During construction, sludge mixed with building domestic garbage is poured into the screening device through manpower or machinery on the spot, wherein the sludge flows into the lower part under the action of gravity, the building domestic garbage is kept on the screen, and the suction pipe of the ground dredging vehicle stretches into the device through the opening point of the opening wall surface, so that the sludge treatment work is continuously carried out. The domestic garbage of the construction is cleaned above the screen at regular intervals. Therefore, the sludge and the building domestic garbage can be rapidly screened, the operating environment of the dredging vehicle is provided, and conditions are created for screening and transporting various wastes to respective treatment plants in the dredging engineering. Meanwhile, the screening device disclosed by the invention is simple in structure, flexible and changeable, and can adapt to various operation conditions on the site of the river channel culvert, so that the investment of engineering personnel and materials is reduced, the engineering investment is saved, and a feasible scheme is provided for screening sludge in the river channel culvert.
Drawings
FIG. 1 is a top view of the apparatus of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is an elevational view of the apertured side of the present invention.
Detailed Description
Reference is made to the accompanying drawings. The invention provides a silt removing method for river channel hidden culverts, which is characterized in that a temporary device for screening silt is constructed in the hidden culverts, and the temporary device consists of a brick structure, a steel wire screen, a PVC plastic film and inclined struts. The sludge screening method using the device of the invention is as follows:
(1) and constructing a temporary cofferdam at the construction section of the hidden culvert, and well performing pumping and drainage treatment work. Provides the working environment of the dredging project.
(2) The brick structure is transported into the culvert in a hoisting or manual transportation mode by a crane, a sludge centralized processing working surface is arranged at a box culvert opening position close to the working surface or the position of the existing inspection well, and a peripheral support structure 1 is formed and a sludge screening pond 10 is formed by building a brick structure on the bottom surface 100 of the hidden culvert. When the masonry is built, the construction requirements of up-down staggered joints, inside-outside lap joints and orderly construction are met. The length a1 of the screening pool 10 can be measured according to the dredging engineering amount of the construction section, the width B1 is smaller than the width B of a river channel hidden culvert, and a certain personnel passing width is reserved. The height h1 of the screening pool 10 is preferably selected according to the selected dredging mode, and if manual dredging is adopted, the height of the screening pool 10 is not more than 1 m; if mechanical dredging is adopted, the height of the screening tank 10 should not exceed the lifting height of the mechanical arm in normal work and be lower than the height H of the river channel hidden culvert. The volume of the screening pool 10 at least meets 2-3 times of bucket capacity V of the excavator.
(3) The steel wire screen 2 is arranged at a certain height h2 of the peripheral supporting structure 1 and is fixed by expansion bolts and the like to form a screen structure of the sludge screening device. In order to prevent the poured sludge from overflowing, a certain height difference delta h exists between the height h1 of the screening pool 10 and the height h2 of the steel wire screen, and the requirement that a1 b1 delta h is more than or equal to V is met (namely the volume of the screening pool 10 above the steel wire screen is not less than 1 time of the bucket capacity of the excavator)
(4) The wall surface of the peripheral supporting structure below the steel wire screen 2 is provided with an opening 3 for the ground dredging vehicle to carry out sludge cleaning operation on the sludge centralized processing operation surface through a sludge suction pipe. The position of the opening can be flexibly adjusted according to the position of the ground dredging vehicle. The height h3 of the opening is generally slightly lower than the height h2 of the steel wire screen, and can be adjusted according to actual conditions during field construction. The size of the opening is preferably that the opening can extend into a mud suction pipe of the dredging vehicle.
(5) After the brick structure construction is finished, a PVC plastic film 4 is laid outside the structure, and edge covering treatment is carried out. And sludge is prevented from leaking to the outside through the gaps of the brick structure.
(6) And throwing supports (inclined supports 5) are arranged around the peripheral supporting structure 1 of the brick-built structure to increase the overall anti-sliding and anti-overturning performance. The contact part of the inclined strut 5 and the peripheral supporting structure 1 is wrapped by soft materials in an auxiliary mode, and the PVC film is prevented from being damaged by the end head of the throwing strut or the inclined strut, so that the seepage-proofing effect is prevented from being influenced.
(7) During construction, sludge mixed with the construction domestic garbage is poured into the screening tank 10 manually or mechanically, wherein the sludge flows into the lower part under the action of gravity, and the construction domestic garbage is left on the screen 2. Therefore, the mud suction pipe of the ground dredging vehicle extends into the screening pool 10 of the screening pool 10 through the opening 3 of the opening wall surface, and the mud treatment work is continuously carried out. The domestic garbage of the construction is cleaned above the screen at regular intervals. Therefore, the sludge and the building domestic garbage can be rapidly screened, the operating environment of the dredging vehicle is provided, and conditions are created for screening and transporting various wastes to respective treatment plants in the dredging engineering.
The invention has low construction cost and convenient construction and demolition, and the device is demolished after the dredging work of the area of the hidden culvert is finished.
The above description is only an embodiment of the present invention, and the technical features of the present invention are not limited thereto, and any changes or modifications within the field of the present invention by those skilled in the relevant art are covered by the protection scope of the present invention.
Claims (5)
1. A silt dredging method for river channel hidden culverts is characterized in that a temporary device for screening silt is constructed in the hidden culverts, and the temporary device comprises a peripheral supporting structure, a steel wire screen, an anti-seepage structure and inclined struts, wherein the peripheral supporting structure, the steel wire screen, the anti-seepage structure and the inclined struts are built on the bottom surface of the hidden culverts; the peripheral supporting structure forms a sludge screening pool, and a certain interval is formed between the screening pool and the side wall of the hidden culvert so as to allow workers to pass through; the steel wire screen is used as a screening screen of the screening device and fixed on a certain height of the peripheral support structure, and the screening tank is divided into an upper layer and a lower layer, wherein the upper layer is a retention space of the construction domestic garbage, and the lower layer is a sludge tank; arranging the seepage-proofing structure outside the peripheral support structure; inclined struts or throwing struts are connected between the periphery of the peripheral support structure and the bottom surface of the hidden culvert; the wall surface of the peripheral supporting structure below the steel wire screen is provided with an opening for introducing a mud suction pipe of a dredging vehicle on the ground;
during dredging construction, sludge mixed with the building domestic garbage in the hidden culvert is directly poured into the screening tank in the hidden culvert manually or mechanically, wherein the sludge flows into a sludge tank below under the action of gravity, and the building domestic garbage is retained on the screening filter screen; the mud suction pipe of the ground dredging vehicle extends into the screening pool through the opening of the opening wall surface, and the mud treatment work is continuously carried out; and cleaning the domestic garbage of the workers and the buildings above the steel wire screen at regular intervals.
2. The method according to claim 1, wherein the temporary device is installed at a position of the opening of the box culvert near the working surface or at a position of the existing inspection shaft.
3. The method according to claim 1, wherein the impermeable structure is a PVC plastic film.
4. The method for dredging sludge in the river channel culvert and the culvert according to claim 1, wherein the volume of the screening pond at least meets 2-3 times of the bucket capacity of the excavator; a certain height difference exists between the height h1 of the screening pool and the height h2 of the steel wire screen, so that the volume of the screening pool above the steel wire screen is not less than 1 time of the bucket capacity of the excavator.
5. The method for dredging sludge in the river channel culvert and the culvert according to claim 1, wherein the peripheral supporting structure adopts a brick structure, a concrete structure or a stone structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010329923.7A CN111519734B (en) | 2020-04-24 | 2020-04-24 | Silt dredging method for river channel hidden culvert |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010329923.7A CN111519734B (en) | 2020-04-24 | 2020-04-24 | Silt dredging method for river channel hidden culvert |
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| Publication Number | Publication Date |
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| CN111519734A true CN111519734A (en) | 2020-08-11 |
| CN111519734B CN111519734B (en) | 2021-06-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997157A (en) * | 2020-08-18 | 2020-11-27 | 深圳市利源水务设计咨询有限公司 | Black-eliminating and deodorizing construction method for hidden culverts in urban dense areas |
| CN113026585A (en) * | 2021-04-06 | 2021-06-25 | 浙江华东工程建设管理有限公司 | Safety protective net |
| CN114000445A (en) * | 2021-11-16 | 2022-02-01 | 北京泽通水务建设有限公司 | Construction method for multi-hole side-by-side crossing hidden culvert |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62121241A (en) * | 1985-11-21 | 1987-06-02 | Ikehara Kogyo Kk | Dredging treatment apparatus |
| KR20040087379A (en) * | 2003-04-07 | 2004-10-14 | 박원선 | A Predging process of deep deposit and apparatus therefor |
| CN107842105A (en) * | 2017-10-27 | 2018-03-27 | 上海市政工程设计研究总院（集团）有限公司 | A kind of hand-held desilting equipment and its dredging method suitable for large scale box culvert |
| CN109056761A (en) * | 2018-08-17 | 2018-12-21 | 上海宝冶集团有限公司 | Channel cleanout method |
| CN110066097A (en) * | 2019-04-25 | 2019-07-30 | 北京金河水务建设集团有限公司 | A kind of riverway sludge dehydrating and curing treatment process |
-
2020
- 2020-04-24 CN CN202010329923.7A patent/CN111519734B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62121241A (en) * | 1985-11-21 | 1987-06-02 | Ikehara Kogyo Kk | Dredging treatment apparatus |
| KR20040087379A (en) * | 2003-04-07 | 2004-10-14 | 박원선 | A Predging process of deep deposit and apparatus therefor |
| CN107842105A (en) * | 2017-10-27 | 2018-03-27 | 上海市政工程设计研究总院（集团）有限公司 | A kind of hand-held desilting equipment and its dredging method suitable for large scale box culvert |
| CN109056761A (en) * | 2018-08-17 | 2018-12-21 | 上海宝冶集团有限公司 | Channel cleanout method |
| CN110066097A (en) * | 2019-04-25 | 2019-07-30 | 北京金河水务建设集团有限公司 | A kind of riverway sludge dehydrating and curing treatment process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997157A (en) * | 2020-08-18 | 2020-11-27 | 深圳市利源水务设计咨询有限公司 | Black-eliminating and deodorizing construction method for hidden culverts in urban dense areas |
| CN113026585A (en) * | 2021-04-06 | 2021-06-25 | 浙江华东工程建设管理有限公司 | Safety protective net |
| CN113026585B (en) * | 2021-04-06 | 2022-05-24 | 浙江华东工程建设管理有限公司 | Safety protective net |
| CN114000445A (en) * | 2021-11-16 | 2022-02-01 | 北京泽通水务建设有限公司 | Construction method for multi-hole side-by-side crossing hidden culvert |
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| CN111519734B (en) | 2021-06-08 |
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