CN110541443A - sewage inspection well structure for dredging without stopping water and construction method thereof - Google Patents
sewage inspection well structure for dredging without stopping water and construction method thereof Download PDFInfo
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- CN110541443A CN110541443A CN201910814551.4A CN201910814551A CN110541443A CN 110541443 A CN110541443 A CN 110541443A CN 201910814551 A CN201910814551 A CN 201910814551A CN 110541443 A CN110541443 A CN 110541443A
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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
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
- E03F5/022—Partitioned to allow more than one medium to flow through
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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
- E03F7/02—Shut-off devices
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Abstract
the invention relates to a sewage inspection well structure for dredging without stopping water and a construction method thereof, wherein the sewage inspection well structure comprises an inspection well consisting of a concrete bottom plate and a well body, a sewage pipeline for water inlet is arranged on the well body at the water inlet end of the inspection well, and a sewage pipeline for water outlet is arranged on the well body at the water outlet end of the inspection well; the water outlet end of the inspection well is symmetrically provided with longitudinal vertical guide walls on two sides, partition areas are formed on two sides, the partition areas are divided into a U-shaped sediment area and a buffer area which are arranged in the front and at the back by a transverse sewage intercepting flashboard, and the bottom surface of the U-shaped sediment area sinks and is lower than other areas. The invention firstly proposes the sewage inspection well function partition concept, and adopts the separation type combined structure form of the symmetrical U-shaped sediment zone and the U-shaped sediment cylinder at two sides in the sewage inspection well by means of the diversion concept, the two sides are synchronously designed and respectively and independently play a role, the desilting work of the sewage inspection well under the state of no water stopping is successfully realized, the structural system is reasonably stressed, and the operation and maintenance cost can be obviously reduced.
Description
Technical Field
the invention belongs to the field of municipal engineering, and particularly relates to a sewage inspection well structure for dredging without stopping water and a construction method thereof.
Background
The rainwater and sewage diversion can effectively protect the urban ecological environment, wherein a sewage pipeline system is one of the foundations of urban safety as an important component of an urban drainage system. Along with the expansion of urban scale, the mileage of municipal sewage pipelines rapidly increases year by year, the detection and repair and daily operation and maintenance costs of old pipe networks are higher and higher, and urban road collapse disasters caused by leakage of old pipe networks are frequent. Although various detection technologies and trenchless repair technologies are rapidly developed, the safety of urban drainage pipeline systems is favorably ensured, but the fact that operation and maintenance are difficult and cost is high, which causes no conflict, particularly, the dredging work of a sewage inspection well has great difficulty and great safety risk, and safety accidents often occur in the manual underground dredging work. If sediment deposition of the inspection well is not cleaned in time, the drainage capacity of the whole sewage pipeline drainage system is seriously influenced, and sewage overflows to peripheral soil bodies from pipeline joints when the deposition is serious, so that urban disasters are induced while underground water is polluted; if the cleaning is carried out regularly, the problems of difficult dredging, low dredging efficiency, high maintenance cost and the like are faced.
disclosure of Invention
the invention aims to provide a sewage inspection well structure for dredging without stopping water and a construction method thereof, which realize the dredging work of the sewage inspection well in a state without stopping water and effectively solve the problems of difficult dredging, low dredging efficiency and the like of the current sewage inspection well.
The technical scheme adopted by the invention is as follows:
Sewage inspection shaft structure of desilting does not stop water, its characterized in that:
the inspection well comprises a concrete bottom plate and a well body, wherein a sewage pipeline for water inlet is arranged on the well body at the water inlet end of the inspection well, and a sewage pipeline for water outlet is arranged on the well body at the water outlet end of the inspection well;
The water outlet end of the inspection well is symmetrically provided with longitudinal vertical guide walls on two sides, partition areas are formed on two sides, the partition areas are divided into a U-shaped sediment area and a buffer area which are arranged in the front and at the back by a transverse sewage intercepting flashboard, and the bottom surface of the U-shaped sediment area sinks and is lower than other areas.
The bottom surface of the water inlet end in the inspection well is provided with inclined section plain concrete, the surface of the inclined section plain concrete is an inclined plane, and the inclined plane is transited from the lower part of the pipe orifice of the sewage pipeline for water inlet to the lower part of the pipe orifice of the sewage pipeline for water outlet.
A front sewage intercepting flashboard and a rear sewage intercepting flashboard are arranged in the separating area on the inner side of the guide wall, the first sewage intercepting flashboard is separated into a U-shaped sediment area, and the second sewage intercepting flashboard is separated into a cache area.
the well body and the water conservancy diversion wall of the horizontal both sides of cut-off drain flashboard are provided with vertical bar groove, and the cut-off drain flashboard inserts the bar groove and keeps upright.
the middle part of the bottom surface of the cache region is provided with a transverse sunken groove.
a U-shaped sediment cylinder is arranged in the U-shaped sediment area, and a lifting hanging ring is arranged at the top edge of the U-shaped sediment cylinder;
The U-shaped sediment cylinder is a cylindrical structure with an open top and a closed bottom, the top edge is expanded outwards to form a horizontal edge, and the lifting hanging ring is fixed at the horizontal edge.
the horizontal edge of the U-shaped sediment cylinder is embedded into a corresponding position of the U-shaped sediment area and is provided with a sunken step, the surface of the sunken step is provided with a groove, and a rubber water stop is arranged in the groove.
the well body top is provided with the apron, and apron one end is provided with the well lid.
the inspection well is located the slot, is provided with the backfill soil between the shaft of inspection well and the slot lateral wall, is provided with the bed course between the concrete bottom plate of inspection well and the slot bottom surface.
The construction method of the sewage inspection well structure without stopping water and dredging is characterized in that:
The method comprises the following steps:
The sewage inspection well structure plane location and elevation determination specifically comprises:
(1) According to a design construction drawing of a sewage pipeline, measuring and determining a plane position and an elevation parameter of a sewage inspection well and making an identification;
(2) investigating the distribution conditions of other pipelines and underground structures around the sewage inspection well;
(II) trench excavation, specifically including:
(1) according to the information collected in the step (I), a groove excavation scheme of the sewage inspection well is formulated in combination with the requirement of surrounding environment protection, and a slope support measure is taken if necessary;
(2) Excavating the grooves layer by layer until the elevation of the substrate of the sewage inspection well is 300mm above, and manually cleaning the bottom to avoid over-excavation;
(III) the construction of the sewage inspection well structure comprises the following construction steps:
(1) Constructing a sewage inspection well cushion layer: paving a cushion layer according to the size of the structural substrate of the sewage inspection well, and adopting a plain concrete cushion layer;
(2) Binding and pouring a concrete bottom plate and U-shaped sediment areas at two ends of the concrete bottom plate of the sewage inspection well by using formwork reinforcing steel bars;
(3) reserving a sewage pipeline interface for entering and exiting the sewage inspection well according to a design drawing, binding and pouring a side wall of the sewage inspection well by using formwork reinforcing steel bars, and maintaining the side wall to the age;
(4) Pouring inclined section plain concrete, a guide wall and a buffer area in the sewage inspection well, maintaining the buffer area to the age, sequentially mounting a rubber water stop and a U-shaped sediment cylinder on a U-shaped sediment area of the sewage inspection well, and finally mounting a lifting hanging ring on the U-shaped sediment cylinder;
(5) Installing a sewage interception flashboard of the sewage inspection well, and installing a cover plate and a well cover; completing the construction of a sewage inspection well structure without stopping water and dredging;
backfilling the groove, and backfilling the groove after the sewage pipeline is connected with the sewage inspection well and no leakage is detected and confirmed, wherein the backfilled soil is layered and compacted to avoid secondary disasters caused by post-construction settlement;
(V) the desilting operation debugging of not cutting off the water of sewage inspection shaft structure specifically includes:
(1) the sewage pipe network system runs for a long time, the desilting work is carried out at a low tide stage regularly, the well cover is lifted, the left sewage interception flashboard at one side of the guide wall is dropped, the sewage in the buffer area is cleaned and emptied, the sewage level in the buffer area is continuously controlled by a water pump if necessary, the right sewage interception flashboard at the same side of the guide wall is dropped, the normal sewage discharge capability of the middle channel and the normal work of the symmetrical U-shaped sediment cylinder are reserved, and the non-stop desilting work of the sewage inspection well is realized;
(2) When dredging, if a small amount of sediments exist around the U-shaped sediment cylinder, cleaning the U-shaped sediment cylinder into the U-shaped sediment cylinder, then lifting the U-shaped sediment cylinder and sediments in the U-shaped sediment cylinder out of the ground surface by means of the lifting hanging ring, and dredging on the ground surface;
(3) after the slag on the ground surface is removed, the U-shaped slag settling cylinder is lifted into a U-shaped concrete slag settling area by virtue of a lifting hoisting ring, and the side sewage intercepting flashboard is opened to recover the normal working performance of the U-shaped slag settling cylinder;
(4) and (5) repeating the steps (1) to (3) in the step (V) to finish the whole water-uninterrupted desilting work of the whole sewage inspection well.
the invention has the following advantages:
(1) The technical idea is advanced, the sewage inspection well function partition idea is proposed for the first time, and by means of the diversion idea, a separation type combined structure form of a symmetrical U-shaped sediment area and a U-shaped sediment cylinder is adopted on two sides in the sewage inspection well, and the two sides are synchronously designed and respectively and independently play a role, so that the dredging work of the sewage inspection well in a non-water-stop state is successfully realized, the stress of a structure system is reasonable, the operation and maintenance cost can be obviously reduced, and the traditional dredging mode of the sewage inspection well is changed.
(2) The joint part is treated by adopting an embedded rubber waterstop, so that rainwater infiltration can be prevented, subsequent replacement is facilitated, and the service life of the sewage inspection well is prolonged.
(3) Realize the sewage buffer zone at the sewage inspection shaft with the help of unilateral twice cut dirty flashboard, both guaranteed the dry operation in sewage inspection shaft sediment district, change the desilting mode into well head earth's surface desilting by narrow and small artifical borehole operation again, not only safe but also swift, showing simultaneously and having reduced the operation maintenance cost.
(4) The sewage inspection well structure not only can be cast in place for construction, but also can be prefabricated in advance, so that the construction period can be obviously shortened, and the marketization prospect is bright.
the invention is obviously different from the existing sewage inspection well structure in the aspects of design and construction concept, structural system stress, construction mode, operation maintenance and the like of the sewage inspection well structure, has the advantages of safety, reliability, advanced technology, low operation maintenance cost, safe and rapid dredging and the like, is successfully applied to the sewage inspection well construction project, and has considerable development and application prospects.
Drawings
FIG. 1 is a plan view of a sewage inspection well according to the present invention.
FIG. 2 is a sectional view of a sewage inspection well A-A.
FIG. 3 is a sectional view of a sewage inspection well B-B.
FIG. 4 is a sectional view of a sewage inspection well C-C.
Fig. 5 is a large drawing of a rubber water stop.
fig. 6 is a large drawing of the lifting sling.
fig. 7 is a large scale view of the sewage interception flashboard.
Remarks to the attached drawings: 1-well body, 2-groove, 3-cushion layer, 4-concrete bottom plate, 5-U type sediment zone, 6-sewage pipeline, 7-inclined section plain concrete, 8-guide wall, 9-buffer zone, 10-rubber waterstop, 11-U type sediment cylinder, 12-lifting flying ring, 13-sewage interception flashboard, 14-cover plate, 15-well cover, 16-backfill soil and 17-sediment.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
the sewage inspection well structure for non-stop desilting and the construction method thereof successfully realize the desilting work of the sewage inspection well in the non-stop state by the innovative structural design and the safe and quick desilting process, effectively solve the problems of difficult desilting, low desilting efficiency and the like of the current sewage inspection well, reduce the operation and maintenance cost, favorably ensure the healthy and efficient operation and the service life of urban sewage pipelines, and the sewage inspection well can be built on site and also can be prefabricated and processed, so that the market popularization prospect is bright. At present, no report related to a sewage inspection well structure for dredging without stopping water and a construction method thereof is found in China.
the invention relates to a sewage inspection well structure for dredging without stopping water, which comprises an inspection well consisting of a concrete bottom plate 4 and a well body 1, wherein a sewage pipeline 6 for water inlet is arranged on the well body at the water inlet end of the inspection well, and a sewage pipeline 6 for water outlet is arranged on the well body at the water outlet end of the inspection well; the two sides of the water outlet end in the inspection well are symmetrically provided with vertical guide walls 8, separation areas are formed on the two sides, the separation areas are separated into a U-shaped sediment area 5 and a cache area 9 which are arranged in the front and at the back by a transverse sewage interception flashboard 13, and the bottom surface of the U-shaped sediment area 5 sinks and is lower than other areas.
the bottom surface of the water inlet end in the inspection well is provided with an inclined section of plain concrete 7, the surface of the inclined section of plain concrete is an inclined plane, and the inclined plane is transited from the lower part of the pipe orifice of the sewage pipeline 6 for water inlet to the lower part of the pipe orifice of the sewage pipeline 6 for water outlet.
a front sewage intercepting flashboard and a rear sewage intercepting flashboard 13 are arranged in a separation area on the inner side of the guide wall 8, the U-shaped sediment area 5 is separated by the first sewage intercepting flashboard 13, and the cache area 9 is separated by the second sewage intercepting flashboard 13. Vertical strip-shaped grooves are formed in the well body 1 and the flow guide wall 8 on the two transverse sides of the sewage intercepting flashboard 13, and the sewage intercepting flashboard 13 is inserted into the strip-shaped grooves to be kept upright.
the middle of the bottom surface of the buffer area 9 is provided with a transverse sunken groove.
a U-shaped sediment cylinder 11 is arranged in the U-shaped sediment zone 5, and a lifting hanging ring 12 is arranged at the top edge of the U-shaped sediment cylinder 11. The U-shaped sediment cylinder 11 is a cylinder structure with an open top and a closed bottom, the top edge is expanded outwards to form a horizontal edge, and the lifting hanging ring 12 is fixed at the horizontal edge. The horizontal edge of the U-shaped sediment cylinder 11 is embedded into the corresponding position of the U-shaped sediment area 5 and is provided with a sunken step, the surface of the sunken step is provided with a groove, and a rubber water stop 10 is arranged in the groove.
The top of well body 1 is provided with apron 14, and 14 one end in the apron are provided with well lid 15. The inspection well is located the slot 2, is provided with backfill 16 between the shaft 1 of inspection well and the slot 2 lateral wall, is provided with bed course 3 between the concrete bottom plate 4 of inspection well and the slot 2 bottom surface.
the construction method comprises the following steps:
the sewage inspection well structure plane location and elevation determination specifically comprises:
(1) according to a design construction drawing of a sewage pipeline, measuring and determining parameters such as a plane position, an elevation and the like of a sewage inspection well and making marks;
(2) Investigating the distribution conditions of other pipelines and underground structures around the sewage inspection well;
(II) trench excavation, specifically including:
(1) according to the information collected in the step (I), a groove excavation scheme of the sewage inspection well is formulated in combination with the requirement of surrounding environment protection, and a slope support measure is taken if necessary;
(2) The groove is excavated by layers until the elevation of the substrate of the sewage inspection well is about 300mm above, and manual bottom cleaning is adopted to avoid over-excavation;
(III) the construction of the sewage inspection well structure comprises the following construction steps:
(1) constructing a sewage inspection well cushion layer: paving a cushion layer according to the size of the structural substrate of the sewage inspection well, wherein a plain concrete cushion layer is generally adopted;
(2) binding and pouring a concrete bottom plate and U-shaped sediment areas at two ends of the concrete bottom plate of the sewage inspection well by using formwork reinforcing steel bars;
(3) reserving a sewage pipeline interface for entering and exiting the sewage inspection well according to a design drawing, binding and pouring a side wall of the sewage inspection well by using formwork reinforcing steel bars, and maintaining the side wall to the age;
(4) pouring inclined section plain concrete, a guide wall, a cache region and the like in the sewage inspection well, maintaining to the age, sequentially installing a rubber water stop and a U-shaped sediment cylinder on a U-shaped sediment region of the sewage inspection well, and finally installing a lifting hanging ring on the U-shaped sediment cylinder;
(5) installing a sewage interception flashboard of the sewage inspection well, and installing a cover plate and a well cover; the construction of the sewage inspection well structure for dredging without stopping water can be completed.
and (IV) backfilling the groove, wherein after the sewage pipeline is connected with the sewage inspection well, the groove can be backfilled after no leakage is detected and confirmed, and backfilled soil is suitable for layering compaction, so that secondary disasters caused by post-construction settlement are avoided.
(V) the desilting operation debugging of not cutting off the water of sewage inspection shaft structure specifically includes:
(1) The sewage pipe network system generally runs for a long time, can periodically select a low-tide period to carry out desilting work, lift a well cover, fall a left side sewage interception flashboard at one side of a guide wall, clean and empty sewage in a cache region, continuously control the sewage level of the cache region by a water pump if necessary, fall a right side sewage interception flashboard at the same side of the guide wall, keep the normal sewage discharge capacity of a middle channel and the normal work of a symmetrical U-shaped sediment cylinder, and can realize the non-stop desilting work of a sewage inspection well;
(2) when dredging, if a small amount of sediments exist around the U-shaped sediment cylinder, cleaning the U-shaped sediment cylinder into the U-shaped sediment cylinder, then lifting the U-shaped sediment cylinder and sediments in the U-shaped sediment cylinder out of the ground by virtue of the lifting hanging ring, and dredging on the ground;
(3) after the slag on the ground surface is removed, the U-shaped slag settling cylinder is hung into the U-shaped concrete slag settling area by means of the lifting hanging ring, and the normal working performance of the U-shaped slag settling cylinder can be recovered by opening the side sewage intercepting flashboard.
(4) And (5) repeating the steps (1) to (3) in the step (V), and finishing the whole non-stop desilting work of the whole sewage inspection well.
The sewage inspection well structure can be integrally prefabricated and assembled to be poured in advance and installed on site; the cross-sectional shape is also not limited to circular or rectangular. The sewage inspection well structure can be made of steel or other novel composite materials besides a reinforced concrete structure.
the technical scheme of the invention is provided aiming at the defects of the design construction and the subsequent operation maintenance of the current municipal sewage pipeline system, and starting from the urgent need of the construction of a sewage inspection well and sediment desilting, the functional partition concept of the sewage inspection well is firstly provided, the sewage inspection well is further divided into a sediment zone, a cache zone, a diversion zone and the like, a U-shaped sediment cylinder separation type combined structure form is introduced into the U-shaped sediment zones at two sides, sewage is prevented from entering a joint through a semi-embedded rubber water stop belt, and finally, the U-shaped sediment cylinder and sediment inside the U-shaped sediment cylinder can be lifted to the outer surface desilting of the sewage inspection well and the reset concept of the U-shaped sediment cylinder by lifting a lifting ring by means of external lifting equipment, so that the conventional artificial underground desilting is successfully changed. The invention can safely and quickly complete the construction of the municipal sewage pipeline inspection well, facilitate the subsequent operation and maintenance and reduce the risk and cost of dredging. The technology is used as a new design and construction method of a sewage inspection well urgently needed for construction and operation and maintenance of a municipal sewage pipeline system, and is safe, reliable, advanced in technical concept, low in subsequent operation and maintenance cost and safe and rapid in dredging.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (10)
1. Sewage inspection shaft structure of desilting does not stop water, its characterized in that:
The inspection well comprises a concrete bottom plate (4) and a well body (1), wherein a sewage pipeline (6) for water inlet is arranged on the well body at the water inlet end of the inspection well, and a sewage pipeline (6) for water outlet is arranged on the well body at the water outlet end of the inspection well;
the water outlet end of the inspection well is symmetrically provided with longitudinal vertical guide walls (8) at two sides to form a separation area, the separation area is divided into a U-shaped sediment area (5) and a cache area (9) which are arranged front and back by a transverse sewage interception flashboard (13), and the bottom surface of the U-shaped sediment area (5) sinks and is lower than other areas.
2. The sewage inspection well structure without stopping water and dredging according to claim 1, characterized in that:
The bottom surface of the water inlet end in the inspection well is provided with an inclined section of plain concrete (7), the surface of the inclined section of plain concrete is an inclined plane, and the inclined plane is transited from the lower part of the pipe orifice of the sewage pipeline (6) for water inlet to the lower part of the pipe orifice of the sewage pipeline (6) for water outlet.
3. The sewage inspection well structure without stopping water and dredging according to claim 2, characterized in that:
a front sewage intercepting flashboard and a rear sewage intercepting flashboard (13) are arranged in a partition area on the inner side of the guide wall (8), a U-shaped sediment area (5) is separated from the first sewage intercepting flashboard (13), and a cache area (9) is separated from the second sewage intercepting flashboard (13).
4. the sewage inspection well structure without stopping water and dredging according to claim 3, characterized in that:
Vertical strip-shaped grooves are formed in the well body (1) and the flow guide wall (8) on the two transverse sides of the sewage intercepting flashboard (13), and the sewage intercepting flashboard (13) is inserted into the strip-shaped grooves to be kept upright.
5. the sewage inspection well structure without stopping water and dredging according to claim 4, characterized in that:
the middle part of the bottom surface of the buffer area (9) is provided with a transverse sunken groove.
6. the sewage inspection well structure without stopping water and dredging according to claim 5, characterized in that:
A U-shaped sediment cylinder (11) is arranged in the U-shaped sediment area (5), and a lifting ring (12) is arranged at the top edge of the U-shaped sediment cylinder (11);
the U-shaped sediment cylinder (11) is a cylinder-shaped structure with an open top and a closed bottom, the top edge is expanded outwards to form a horizontal edge, and the lifting hanging ring (12) is fixed at the horizontal edge.
7. the sewage inspection well structure without stopping water and dredging according to claim 6, characterized in that:
The horizontal edge of the U-shaped sediment cylinder (11) is embedded into the corresponding position of the U-shaped sediment area (5) and is provided with a sunken step, the surface of the sunken step is provided with a groove, and a rubber water stop (10) is arranged in the groove.
8. the sewage inspection well structure without stopping water and dredging according to claim 7, characterized in that:
A cover plate (14) is arranged at the top of the well body (1), and a well cover (15) is arranged at one end of the cover plate (14).
9. The sewage inspection well structure without stopping water and dredging according to claim 8, characterized in that:
The inspection well is located slot (2), is provided with backfill soil (16) between well body (1) and slot (2) lateral wall of inspection well, is provided with bed course (3) between concrete bottom plate (4) and slot (2) bottom surface of inspection well.
10. the construction method of the sewage inspection well structure without stopping water and dredging is characterized in that:
The method comprises the following steps:
The sewage inspection well structure plane location and elevation determination specifically comprises:
(1) According to a design construction drawing of a sewage pipeline, measuring and determining a plane position and an elevation parameter of a sewage inspection well and making an identification;
(2) investigating the distribution conditions of other pipelines and underground structures around the sewage inspection well;
(II) trench excavation, specifically including:
(1) according to the information collected in the step (I), a groove excavation scheme of the sewage inspection well is formulated in combination with the requirement of surrounding environment protection, and a slope support measure is taken if necessary;
(2) excavating the grooves layer by layer until the elevation of the substrate of the sewage inspection well is 300mm above, and manually cleaning the bottom to avoid over-excavation;
(III) the construction of the sewage inspection well structure comprises the following construction steps:
(1) constructing a sewage inspection well cushion layer: paving a cushion layer according to the size of the structural substrate of the sewage inspection well, and adopting a plain concrete cushion layer;
(2) Binding and pouring a concrete bottom plate and U-shaped sediment areas at two ends of the concrete bottom plate of the sewage inspection well by using formwork reinforcing steel bars;
(3) reserving a sewage pipeline interface for entering and exiting the sewage inspection well according to a design drawing, binding and pouring a side wall of the sewage inspection well by using formwork reinforcing steel bars, and maintaining the side wall to the age;
(4) Pouring inclined section plain concrete, a guide wall and a buffer area in the sewage inspection well, maintaining the buffer area to the age, sequentially mounting a rubber water stop and a U-shaped sediment cylinder on a U-shaped sediment area of the sewage inspection well, and finally mounting a lifting hanging ring on the U-shaped sediment cylinder;
(5) installing a sewage interception flashboard of the sewage inspection well, and installing a cover plate and a well cover; completing the construction of a sewage inspection well structure without stopping water and dredging;
Backfilling the groove, and backfilling the groove after the sewage pipeline is connected with the sewage inspection well and no leakage is detected and confirmed, wherein the backfilled soil is layered and compacted to avoid secondary disasters caused by post-construction settlement;
(V) the desilting operation debugging of not cutting off the water of sewage inspection shaft structure specifically includes:
(1) the sewage pipe network system runs for a long time, the desilting work is carried out at a low tide stage regularly, the well cover is lifted, the left sewage interception flashboard at one side of the guide wall is dropped, the sewage in the buffer area is cleaned and emptied, the sewage level in the buffer area is continuously controlled by a water pump if necessary, the right sewage interception flashboard at the same side of the guide wall is dropped, the normal sewage discharge capability of the middle channel and the normal work of the symmetrical U-shaped sediment cylinder are reserved, and the non-stop desilting work of the sewage inspection well is realized;
(2) When dredging, if a small amount of sediments exist around the U-shaped sediment cylinder, cleaning the U-shaped sediment cylinder into the U-shaped sediment cylinder, then lifting the U-shaped sediment cylinder and sediments in the U-shaped sediment cylinder out of the ground surface by means of the lifting hanging ring, and dredging on the ground surface;
(3) After the slag on the ground surface is removed, the U-shaped slag settling cylinder is lifted into a U-shaped concrete slag settling area by virtue of a lifting hoisting ring, and the side sewage intercepting flashboard is opened to recover the normal working performance of the U-shaped slag settling cylinder;
(4) and (5) repeating the steps (1) to (3) in the step (V) to finish the whole water-uninterrupted desilting work of the whole sewage inspection well.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535380A (en) * | 2020-06-04 | 2020-08-14 | 江苏电力装备有限公司 | External-in and internal-out type drum net bottom online dredging device |
| CN111576518A (en) * | 2020-06-04 | 2020-08-25 | 江苏电力装备有限公司 | External-in and internal-out type drum net bottom online dredging system and dredging method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535380A (en) * | 2020-06-04 | 2020-08-14 | 江苏电力装备有限公司 | External-in and internal-out type drum net bottom online dredging device |
| CN111576518A (en) * | 2020-06-04 | 2020-08-25 | 江苏电力装备有限公司 | External-in and internal-out type drum net bottom online dredging system and dredging method thereof |
| CN111576518B (en) * | 2020-06-04 | 2023-12-15 | 江苏电力装备有限公司 | Online dredging system and dredging method for bottom of outer-inlet inner-outlet drum net |
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| CN110541443B (en) | 2021-12-14 |
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