CN222065705U - Immersed tube inspection well suitable for rapidly repairing pavement collapse - Google Patents
Immersed tube inspection well suitable for rapidly repairing pavement collapse Download PDFInfo
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- CN222065705U CN222065705U CN202420420859.7U CN202420420859U CN222065705U CN 222065705 U CN222065705 U CN 222065705U CN 202420420859 U CN202420420859 U CN 202420420859U CN 222065705 U CN222065705 U CN 222065705U
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- 238000007689 inspection Methods 0.000 title claims abstract description 65
- 238000010276 construction Methods 0.000 claims abstract description 37
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
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- 239000003223 protective agent Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 26
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- 239000004568 cement Substances 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 230000008439 repair process Effects 0.000 claims description 6
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 5
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- 238000004062 sedimentation Methods 0.000 claims description 5
- 239000010425 asbestos Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000004587 polysulfide sealant Substances 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000011178 precast concrete Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 description 14
- 239000002002 slurry Substances 0.000 description 5
- 235000019353 potassium silicate Nutrition 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
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- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
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- 239000011398 Portland cement Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
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Abstract
本实用新型公开了适用于快速修复路面塌陷的沉管检查井及施工方法，包括沉管井；沉管井为竖直设置的支护结构，采用机械化快速拼装方式建造，内壁迎水面均喷涂两遍以上水基渗透型混凝土保护剂，下端对应现状排水管的位置设有两个用于穿设现状排水管的门洞，下设有素砼垫层；沉管井内素砼垫层上设有与现状排水管的轴线垂直的检查井；检查井为预制装配式钢筋砼检查井，与沉管井之间采用C20素砼回填，包括井筒；井筒的上端设有井圈，靠近下端与现状排水管交叉的管壁位置均设内径与现状排水管相匹配的外套PE管。本实用新型能保护现状给排水管道，简化施工工艺和流程，提高检查井的抗渗性能、整体性和强度，且能够适用于施工空间小的城市道路场合。
The utility model discloses a submerged pipe inspection well and a construction method suitable for quickly repairing road collapse, including a submerged pipe well; the submerged pipe well is a vertically arranged support structure, constructed by mechanized rapid assembly, the inner wall water-facing surface is sprayed with a water-based permeable concrete protective agent for more than two times, the lower end is provided with two door openings for passing the existing drainage pipe corresponding to the position of the existing drainage pipe, and a plain concrete cushion layer is provided below; an inspection well perpendicular to the axis of the existing drainage pipe is provided on the plain concrete cushion layer in the submerged pipe well; the inspection well is a prefabricated assembled reinforced concrete inspection well, and C20 plain concrete is used to backfill between the submerged pipe well and the well, including a well shaft; a well ring is provided at the upper end of the well shaft, and a PE outer sleeve pipe with an inner diameter matching the existing drainage pipe is provided at the pipe wall position near the lower end that intersects with the existing drainage pipe. The utility model can protect the existing water supply and drainage pipelines, simplify the construction process and process, improve the anti-seepage performance, integrity and strength of the inspection well, and can be applied to urban road occasions with small construction space.
Description
Technical Field
The utility model relates to the technical field of municipal engineering, in particular to a immersed tube inspection well suitable for rapidly repairing pavement collapse.
Background
In recent years, urban road collapse events have created a threat to the life and property security of citizens. There are various reasons for the collapse of urban roads, the most of which are over-exploitation of groundwater and aging of infrastructure such as urban pipelines and inspection wells.
When the infrastructures such as urban pipelines and inspection wells age, the pipelines and the inspection wells are damaged and leaked, so that soil bodies nearby the pipelines and the inspection wells are hollowed out by water flow, and finally ground collapse is caused.
Aiming at the problem of collapse of narrow roads in old areas of cities, because of a plurality of traffic flows and no large-area excavation condition, the utility model uses reinforced concrete III-level pipe-jacking pipelines as construction supporting structures to quickly repair the problems of collapse of roads, leakage of inspection wells and auxiliary pipelines, adopts grouting to reinforce soil near the collapse areas, adopts a breaking and dismantling machine to dismantle the original inspection well, then constructs a prefabricated reinforced concrete drainage inspection well, fills gaps with plain concrete after the construction of the inspection well is completed, and finally recovers the road structure.
Compared with the existing construction technology which adopts mechanical rapid assembly operation and has long construction period of cast-in-place concrete, large wet operation workload and long maintenance time, the existing construction technology greatly improves the construction speed of the inspection well, reduces the diversion time of the upstream and downstream pipelines and reduces the construction cost.
Therefore, how to protect the current water supply and drainage pipelines, simplifying the construction process, improving the impermeability, the integrity and the strength, and being applicable to urban road occasions with small construction space becomes a technical problem to be solved by the technicians in the field.
Disclosure of utility model
In view of the above-mentioned defects of the prior art, the utility model provides a immersed tube inspection well suitable for rapidly repairing the subsidence of a pavement, and aims to protect the current water supply and drainage pipeline, simplify the construction process and flow, improve the impermeability, the integrity and the strength, and be suitable for urban road occasions with small construction space.
In order to achieve the above purpose, the utility model discloses a immersed tube inspection well suitable for rapidly repairing pavement collapse, comprising an immersed tube well;
The immersed tube well is a vertically arranged supporting structure and is built in a mechanical rapid assembly mode, water-based permeable concrete protective agents are sprayed on the upstream surface of the inner wall for more than two times, two door openings for penetrating the current drain pipe are arranged at the lower end of the immersed tube well corresponding to the current drain pipe, and a plain concrete cushion layer is arranged below the immersed tube well;
each door opening is formed along with the current drain pipe when the immersed tube is immersed in the pit, and the top of each door opening is provided with a protection steel ring;
A brick pier is arranged between the end part of the immersed tube well and the outer side of the current drain pipe in the range of each door opening;
At least two uniformly distributed grouting pipes are arranged around the open caisson outside the open caisson;
each grouting pipe is used for forming a grouting composite foundation within a range of 1 meter around the immersed tube well after grouting;
an inspection well perpendicular to the axis of the current drain pipe is arranged on the plain concrete cushion layer in the immersed tube well;
The inspection well is a prefabricated reinforced concrete inspection well, and C20 plain concrete backfill is adopted between the inspection well and the immersed tube well, and the inspection well comprises a shaft;
The upper end of the shaft is provided with a well ring, and the positions, close to the lower end, of the pipe wall crossing the current drain pipe are respectively provided with an outer sleeve PE pipe with the inner diameter matched with that of the current drain pipe;
The outer wall of each outer sleeve PE pipe and the side wall of the inspection well are filled with asbestos cement, the outer wall of the inspection well is plugged with two-component polysulfide sealant, and water stop strips are arranged between the inner wall and the current drain pipe;
The well ring is provided with a well cover.
Preferably, the immersed tube well serving as the supporting structure is a reinforced concrete III-level jacking tube immersed tube well and comprises a plurality of tube sections;
A socket steel ring is arranged between the outer walls of the joints of every two pipe joints, and a liner plate is arranged between the annular end faces of every two pipe joints;
The shaft is a precast concrete shaft;
Each water stop strip is a water-swelling rubber water stop strip, and water or pollution is prevented in the process of pasting and mounting;
The brick buttress is built by adopting MU15 solid bricks and M10 cement mortar;
Each protection steel ring is formed by bending a Q355 steel plate;
the plain concrete cushion layer is poured by C10 to C20 concrete;
The well lid is heavy nodular cast iron broadside anti-sedimentation well lid.
More preferably, the inner diameter of the immersed tube well is 2000mm to 3500mm, and the applicable depth is not more than 10m;
The diameter of each outer sleeve PE pipe is 300mm to 2000mm;
Each bell mouth steel ring is made of Q355B steel, and the thickness is 6mm to 12mm;
Each lining plate is made of rubber materials;
The thickness of each protection steel ring is 5mm to 10mm;
The thickness of the brick buttress is 240mm.
Preferably, a shaft anti-falling net is arranged below the well cover.
Preferably, in the construction, a construction fence with the height not less than 2.5m is arranged on the ground.
The utility model has the beneficial effects that:
The utility model is suitable for the fine road maintenance when the joint of the rain sewage pipeline and the well chamber is damaged and leaked and the soil body at the periphery of the pipe is lost to cause the collapse of the road surface.
The utility model has the advantages of high construction speed, convenient transportation and installation, high prefabrication assembly rate, good well body impermeability, low manufacturing cost, civilized construction, wide application conditions and the like.
The immersed tube adopts the reinforced concrete III-level jacking pipe, and the pipe has high structural strength, good durability and waterproof performance, small construction operation surface and low noise. The prefabricated reinforced concrete drainage inspection well has the advantages of high strength, convenient transportation and installation, high construction speed and the like.
The grouting reinforcement can effectively reinforce the soil around the immersed tube, can fill gaps in the soil, and can strengthen the strength and the impermeability of the soil. The tightness of the current pipeline and the inspection well interface is enhanced by adopting secondary plain concrete pouring between the immersed tube and the inspection well;
The combination of the immersed tube, the prefabricated reinforced concrete inspection well and the grouting reinforcement can quickly repair damaged pipelines and pavement collapse, and meanwhile, secondary leakage of the current pipelines is prevented.
The conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model.
Drawings
Fig. 1 shows a plan view of an embodiment of the present utility model.
Fig. 2 shows a schematic view of the AA cross-sectional structure of fig. 1 according to the present utility model.
FIG. 3 is a schematic view showing a partial enlarged structure of a door opening according to an embodiment of the utility model.
Fig. 4 is a schematic view showing a partially enlarged structure of a connection structure between an outer PE pipe and an inspection well in accordance with an embodiment of the present utility model.
Detailed Description
Example 1
As shown in fig. 1 to 4, a immersed tube inspection well suitable for rapidly repairing pavement collapse comprises an immersed tube well 1;
The sinking pipe well 1 is a vertically arranged supporting structure and is built in a mechanical rapid assembly mode, water-based permeable concrete protective agents are sprayed on the upstream surface of the inner wall for more than two times, two door openings 101 for penetrating the current drain pipe 9 are arranged at the lower end corresponding to the current drain pipe 9, and a plain concrete cushion layer 12 is arranged below the lower end;
each door opening 101 is formed by breaking along with the current drain pipe 9 when the immersed tube well 1 sinks, and the top is provided with a protection steel ring 10;
A brick buttress 11 is arranged between the end part of the immersed tube well 1 and the outer side of the current drain pipe 9 in the range of each door opening 101;
at least two evenly distributed grouting pipes 2 are arranged around the sinking pipe well 1 outside the sinking pipe well 1;
Each grouting pipe 2 is used for forming a grouting composite foundation 201 within the range of 1 meter around the immersed tube well 1 after grouting;
An inspection well 3 perpendicular to the axis of the current drain pipe 9 is arranged on the plain concrete cushion layer 12 in the sinking pipe well 1;
The inspection well 3 is a prefabricated reinforced concrete inspection well, and C20 plain concrete backfill is adopted between the inspection well and the open caisson 1, and comprises a shaft 4;
The upper end of the shaft 4 is provided with a well ring 13, and the positions of the pipe walls near the lower end and crossing the current drain pipe 9 are respectively provided with an outer sleeve PE pipe 5 with the inner diameter matched with the current drain pipe 9;
The outer wall of each outer sleeve PE pipe 5 and the side wall of the inspection well 3 are filled with asbestos cement 301, the outer wall of the inspection well 3 is plugged with a double-component polysulfide sealant 302, and a water stop strip 6 is arranged between the inner wall and the current drain pipe 9;
The well ring 13 is provided with a well lid 14.
In practical applications, the current drain pipe 9 is typically a concrete pipe, a ductile iron pipe, or a PE pipe with an inner diameter of 300mm to 2000 mm;
Grouting is carried out through the grouting pipe 2 to form a grouting composite foundation so as to fill soil cavities, increase soil strength and improve foundation bearing capacity;
In construction of the sinking pipe well 1, as the door opening of the current drain pipe 9 corresponding to the lower end is uneven in the breaking process, a protection steel ring 10 is arranged for protecting the current drain pipe from being damaged;
The brick buttress 11 is used for supporting and protecting the steel ring 10 from sedimentation;
The inspection well 3 is used for inspecting prefabricated reinforced concrete, so that the construction speed can be increased, and the pavement collapse can be quickly repaired on the premise of ensuring the structural safety.
The well bore 4 serves to facilitate the servicing of the well by construction personnel and to provide sufficient vehicle load bearing capacity.
The outer sleeve PE pipe 5 is arranged between the side walls of the inspection well 3 of the current drain pipe 9, asbestos cement filling 301 is adopted for filling joints, and the current drain pipe 9 and the inspection well 3 can be effectively connected by adopting the two-component polysulfide sealant 302 for sealing between the outer walls of the inspection well 3.
A water stop strip 6 is arranged between the inner wall of each outer sleeve PE pipe 5 and the current drain pipe 9, so that gaps between the current drain pipe 9 and the outer sleeve PE pipes 5 can be blocked, and sewage in the inspection well 3 is prevented from penetrating out of the inspection well 3;
The well ring 13 is arranged to effectively improve the transmission of stress of the well cover 14 and improve the strength and the integrity of the well shaft 4.
In some embodiments, the immersed tube well 1 serving as a supporting structure is a reinforced concrete III-level jacking tube immersed tube well and comprises a plurality of tube sections;
A socket steel ring 7 is arranged between the outer walls of the joints of every two pipe joints, and a liner plate 8 is arranged between the annular end faces of every two pipe joints;
The shaft 4 is a precast concrete shaft;
each water stop strip 6 is a water-swelling rubber water stop strip, and water or pollution is prevented in the process of pasting and mounting;
The brick buttress 11 is built by adopting MU15 solid bricks and M10 cement mortar;
Each protection steel ring 10 is formed by bending a Q355 steel plate;
the plain concrete cushion layer 12 is poured by C10 to C20 concrete;
the well lid 14 is a heavy ductile iron broadside anti-sedimentation well lid.
In practical application, the reinforced concrete III-level pipe-jacking sinking well is adopted as a supporting structure, so that the construction speed is high, the transportation and the installation are convenient, the safety of constructors can be further ensured, and meanwhile, the buildings around the road are kept from being inclined or settled and other adverse effects.
The socket steel ring 7 is used for protecting the sinking pipe well 1 from being damaged in the construction process and plays a role in preventing water to a certain extent.
The existence of the lining plate 8 can effectively buffer the friction force between the corresponding two pipe joints and play a role in water resistance.
The greater the depth of the sinking tube well 1 and the inspection well 3, the higher the concrete index.
The well lid 14 is a heavy ductile iron broadside anti-sedimentation well lid, has good toughness, is not easy to damage, and has better anti-theft performance than a common cast iron well lid.
In certain embodiments, the inner diameter of the sinking tube well 1 is 2000mm to 3500mm, and the applicable depth is not more than 10m;
The diameter of each outer sleeve PE pipe 5 is 300mm to 2000mm;
Each socket steel ring 7 is made of Q355B steel, and the thickness is 6mm to 12mm;
each liner panel 8 is made of rubber material;
The thickness of each protection steel ring 10 is 5mm to 10mm;
The bricked pier 11 has a thickness of 240mm.
In some embodiments, the grouting material of each grouting pipe 2 is a mixed liquid of cement and water glass;
The main material of the cement and water glass mixed solution is 42.5-grade ordinary Portland cement, the mixing amount of the water glass is 10%, and the water-cement ratio is 1.0.
In some embodiments, the grouting process of each grouting pipe 2 is specifically as follows:
step a1, positioning;
Step a2, drilling holes;
Step a3, pouring down the grouting pipe;
Step a4, sealing;
step a5, preparing slurry;
step a6, pressurized grouting;
step a7, temporary plugging;
step a8, secondary slurry supplementing;
step a9, static cone penetration in-situ detection;
and (c) ending the step a 10.
In certain embodiments, such as with cement waterglass dual fluid quick setting slurry compaction grouting, the initial grouting pressure is 0.1MPa to 0.2MPa; if the slurry does not sink in the grouting process, gradually increasing the pressure to 0.4MPa;
Stopping grouting when the slurry does not sink within 10-15 min;
When the grouting amount exceeds 1t while the pressure gauge has no obvious change or the grouting occurs at other places on the ground, the grouting is stopped.
In some embodiments, a well bore fall arrest net 15 is provided below the well cover 14.
In practical application, the arrangement of the shaft anti-falling net 15 can prevent relevant personnel and articles from falling into the well when the well cover is opened.
In some embodiments, a construction fence 16 is provided on the ground that should not be less than 2.5m in height when constructed.
In practice, the construction fence 16 can provide a safety enclosure during construction to prevent falling of people or objects.
The utility model also provides a construction method of the immersed tube inspection well suitable for rapidly repairing the pavement collapse, which comprises the following steps:
step 1, water is conducted to a field, the field is electrified and leveled, so that construction requirements are met, and a fence 16 is constructed;
Step 2, constructing a reinforced concrete III-level jacking pipe sinking well by adopting a mechanical rapid assembly mode as a supporting structure to form a sinking well 1;
In the sinking process, when the lower end of the lowest pipe joint touches the current drain pipe 9, the lower end of the lowest pipe joint is broken to form a city gate opening 101, and a protection steel ring 9 is installed;
After the sinking construction of the immersed tube well 1 is finished, the soil body of each door opening 101 below the current drain pipe 9 is removed, a brick buttress 11 is constructed, and fine stone concrete is adopted to fill the gap;
Step 3, arranging at least two grouting pipes 2 uniformly distributed around the sinking pipe well 1 at the outer side of the sinking pipe well 1, and grouting and reinforcing soil mass within the range of 1m around the sinking pipe well 1 through the grouting pipes 2;
step 4, pouring a plain concrete cushion layer 12 at the bottom of the immersed tube well 1, and constructing an inspection well 3 on the plain concrete cushion layer 12;
In the construction process of the inspection well 3, a real wall PE pipe 5 is sleeved on a current drain pipe 9 and water sealing strips 6 are adopted for waterproof treatment.
In some embodiments, the original bricked inspection well is removed by adopting a breaking and removing machine while sinking, and a socket steel ring 7 and a liner plate 8 are arranged at the joint of every two adjacent pipe sections in the sinking process.
Example 2
Taking sporadic maintenance engineering of drainage facilities in certain city as an example, pavement collapse is generated on certain double-lane pavement in old urban areas, the current sewage inspection well under the pavement is of a bricked structure, the service life is long, part of masonry mortar is peeled off, soil around the well penetrates into the well, and the phenomenon of cavitation exists in soil outside the well.
The solution is as follows:
Firstly, plugging an upstream pipeline and a downstream pipeline, conducting diversion treatment on upstream sewage, then using a 3.0m reinforced concrete III-level pipe jacking pipeline as a construction supporting structure, adopting a current brick inspection well to be broken while sinking, adopting a grouting pipe to carry out grouting reinforcement treatment on soil mass within a range of 1m around the immersed tube well when the current brick inspection well is constructed to the current inspection well bottom elevation, after grouting reinforcement is carried out for initial setting, constructing a prefabricated reinforced concrete drainage inspection well after a cushion layer is poured in the immersed tube well, adopting plain concrete to fill gaps between the immersed tube well and the inspection well after the inspection well is constructed, and finally dismantling the upstream and downstream plugs and recovering a road structure.
In addition, it should be noted that the above construction method includes a plurality of construction methods, and can be applied to a plurality of complex geological conditions, such as: the immersed tube inspection well is suitable for silty sandy soil; is suitable for deep and thick miscellaneous fill immersed tube inspection wells and the like.
Variations that would be directly derived or suggested by one of ordinary skill in the art from the disclosure of the present utility model are considered to be within the scope of the present utility model.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (5)
1. The immersed tube inspection well is suitable for rapidly repairing pavement collapse; the device is characterized by comprising a sinking pipe well (1);
The immersed tube well (1) is a vertically arranged supporting structure and is built in a mechanical rapid assembly mode, water-based permeable concrete protective agents are sprayed on the upstream surface of the inner wall for more than two times, two door openings (101) for penetrating the current drain pipe (9) are arranged at the lower end of the immersed tube well corresponding to the current drain pipe (9), and plain concrete cushion layers (12) are arranged below the immersed tube well;
Each door opening (101) is formed by being broken along with the current drain pipe (9) when the immersed tube well (1) sinks, and the top of each door opening is provided with a protection steel ring (10);
A brick pier (11) is arranged between the end part of the immersed tube well (1) and the outer side of the current drain pipe (9) in the range of each door opening (101);
At least two grouting pipes (2) which are uniformly distributed are arranged around the immersed tube well (1) at the outer side of the immersed tube well (1);
Each grouting pipe (2) is used for forming a grouting composite foundation (201) within the range of 1 meter around the immersed tube well (1) after grouting;
an inspection well (3) perpendicular to the axis of the current drain pipe (9) is arranged on the plain concrete cushion layer (12) in the immersed tube well (1);
The inspection well (3) is a prefabricated reinforced concrete inspection well, and C20 plain concrete backfill is adopted between the inspection well and the immersed tube well (1), and comprises a shaft (4);
The upper end of the shaft (4) is provided with a well ring (13), and the positions, close to the lower end, of the pipe walls intersecting the current drain pipe (9) are provided with outer sleeve PE pipes (5) with inner diameters matched with the current drain pipe (9);
The outer wall of each outer sleeve PE pipe (5) and the side wall of the inspection well (3) are filled with asbestos cement (301), the outer wall of the inspection well (3) is sealed by a double-component polysulfide sealant (302), and a water stop strip (6) is arranged between the inner wall and the current drain pipe (9);
The well ring (13) is provided with a well cover (14).
2. The open caisson adapted for rapid repair of a pavement collapse according to claim 1, wherein the open caisson (1) as a supporting structure is a reinforced concrete grade iii top tube open caisson comprising a plurality of tube sections;
A socket steel ring (7) is arranged between the outer walls of the joints of every two pipe joints, and a liner plate (8) is arranged between the annular end faces of every two pipe joints;
The shaft (4) is a precast concrete shaft;
Each water stop strip (6) is a water-swelling rubber water stop strip, and water or pollution is prevented in the process of pasting and mounting;
each protection steel ring (10) is formed by bending a Q355 steel plate;
the well cover (14) is a heavy ductile iron broadside anti-sedimentation well cover.
3. A caisson adapted for rapid repair of a pavement collapse according to claim 2, characterized in that the inner diameter of the caisson (1) is 2000mm to 3500mm, the depth of application is not more than 10m;
The diameter of each outer sleeve PE pipe (5) is 300mm to 2000mm;
Each bellmouth steel ring (7) is made of Q355B steel, and the thickness is 6mm to 12mm;
Each lining plate (8) is made of rubber material;
The thickness of each protection steel ring (10) is 5mm to 10mm;
the thickness of the brick buttress (11) is 240mm.
4. A down pipe manhole suitable for rapid repair of road surface subsidence according to claim 1, characterized in that a well shaft fall prevention net (15) is provided below the well cover (14).
5. A open caisson adapted for rapid repair of a pavement collapse according to claim 1, characterized in that in construction, a construction fence (16) is provided at the ground level which should not be less than 2.5m in height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420420859.7U CN222065705U (en) | 2024-03-05 | 2024-03-05 | Immersed tube inspection well suitable for rapidly repairing pavement collapse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420420859.7U CN222065705U (en) | 2024-03-05 | 2024-03-05 | Immersed tube inspection well suitable for rapidly repairing pavement collapse |
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| CN222065705U true CN222065705U (en) | 2024-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202420420859.7U Active CN222065705U (en) | 2024-03-05 | 2024-03-05 | Immersed tube inspection well suitable for rapidly repairing pavement collapse |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119843750A (en) * | 2025-01-21 | 2025-04-18 | 北京市市政工程设计研究总院有限公司 | Method for reforming current well without water interruption into multifunctional inspection well |
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2024
- 2024-03-05 CN CN202420420859.7U patent/CN222065705U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119843750A (en) * | 2025-01-21 | 2025-04-18 | 北京市市政工程设计研究总院有限公司 | Method for reforming current well without water interruption into multifunctional inspection well |
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