Construction method for manhole cover disease inspection and maintenance on roadway

Abstract

The invention relates to a construction method for quickly maintaining damage of a manhole cover on a roadway. The construction method comprises the following steps: cutting off a surrounding current pavement structure layer; taking out the old manhole cover; mounting a concrete adjusting ring; a limiting well ring is placed and installed; emulsified asphalt is sprayed; filling asphalt layer by layer and tamping; pulling out the installation limiting well ring; an adjustable anti-settling well lid is inserted; rolling and compacting the well lid and the asphalt pavement; and sealing the seam. It can be effectively guaranteed that an asphalt pavement on the periphery of the manhole cover is fully compacted, and the common problems of sinking, damage and the like on the periphery of the manhole cover are prevented; the functional requirements of convenient construction, rapid repair, no relapse of later operation diseases, attractiveness and applicability are met, and the technical problem of rapid repair of the diseases of the current urban road inspection well is solved.

Description

Technical Field

[0001] The invention relates to the technical field of road construction, and in particular to a construction method for inspecting and repairing defects of manhole covers on a roadway. Background Art

[0002] With the rapid development of urban transportation, the problem of municipal road inspection well diseases affecting driving quality has attracted more and more attention from the whole society. The "road killers" that are constantly reported in the newspapers and the "belly buttons" that citizens often complain about have become a difficult and long-standing "chronic disease" for many urban management departments, and more seriously, they damage the urban appearance and the image of municipal engineering. Traditional maintenance and construction methods generally take a long time from the start of construction to the opening of traffic conditions (usually more than 1 day), which squeezes the normal traffic operation time, causing road interruptions or traffic congestion, and the secondary disease rate after repair is high.

[0003] The defects of the prior art are:

[0004] 1. Construction quality problems such as damage and subsidence are prone to occur around the inspection well.

[0005] 2. Traditional maintenance construction technology is cumbersome, inefficient and has a long construction period. Summary of the invention

[0006] In view of the above problems, the present invention provides a construction method for inspecting and repairing manhole cover defects on the roadway, which aims to prevent common problems such as subsidence and damage around the manhole; and meets the construction requirements of convenient construction, rapid repair, no recurrence of defects in later operations, and beautiful and practical construction.

[0007] To solve the above problems, the technical solution provided by the present invention is:

[0008] The construction method for inspecting and repairing manhole cover defects on the roadway includes the following steps:

[0009] S100. Remove the structural layer of the surrounding existing road surface;

[0010] S200. Remove the old manhole cover;

[0011] S300. Install concrete adjustment ring;

[0012] S400. Place and install the limit well ring;

[0013] S500. Sprinkle emulsified asphalt onto the working surface;

[0014] S600. Filling the asphalt mixture layer by layer around the manhole cover and compacting the asphalt mixture;

[0015] S700. Remove the installation limit ring in the vertical direction;

[0016] S800. Align the mounting hole and embed the adjustable anti-sinking manhole cover into the mounting hole;

[0017] S900. Flattening and compacting the adjustable anti-sinking manhole cover and the surrounding asphalt pavement;

[0018] S1000. Evenly spraying the quick-setting hot asphalt onto the surface of the asphalt mixture for sealing;

[0019] S1100. Clean the site, and when the surface temperature of the quick-setting hot asphalt on the surface of the asphalt mixture drops below a manually preset temperature, open the site to traffic.

[0020] Preferably, step S100 specifically includes the following steps:

[0021] S101. Stake out the center of the old manhole cover as the starting point of the excavation measurement line;

[0022] S102. Cut the road surface using a cutting machine;

[0023] S103. After the cutting is completed, a breaker is used to break and excavate the road surface structure within the cutting range around the old manhole cover, and the side wall of the structural layer of the existing road surface is roughened;

[0024] Among them, in step S101, the edge line of the road excavation is not less than 300mm from the inner edge of the manhole cover frame, and is not less than the damaged range around the manhole; the cutting shape in step S102 is circular, and the cutting depth is selected according to different road conditions; in step S103, the depth range of roughening is 5mm to 10mm, the spacing range of the roughening marks is 30mm, and the roughening rate is not less than 90%.

[0025] Preferably, in step S200, before removing the old manhole cover, a slag tray of corresponding size is selected according to the diameter of the shaft and placed in the well chamber to ensure that no slag leaks into the well chamber during construction; after removing the old manhole cover, the operating surface is trimmed and cleaned, and the old manhole cover is recovered onto the transport vehicle.

[0026] Preferably, step S300 specifically includes the following contents:

[0027] Deepen the depth of the broken road surface; ensure that the cutting line is perpendicular to the broken surface during breaking, then clean it up, and check the broken depth with a level and a depth gauge; for wellbore corrosion, damage or well wall collapse, demolish it to the intact interface, then use fast-hardening early-strength cement mortar for leveling and then install the concrete adjusting ring.

[0028] Preferably, step S400 specifically includes the following contents: placing the installation limiting well ring into the concrete adjusting ring in a socket-and-spigot manner, and ensuring that the installation limiting well ring and the concrete adjusting ring are vertically and closely attached.

[0029] Preferably, the emulsified asphalt in step S500 is the fast-setting hot asphalt; the fast-setting hot asphalt is evenly applied to the working joint surface by a spraying device; the fast-setting hot asphalt needs to be applied 50 mm beyond the cutting surface, and the amount used is 0.2 L / m 2 ~0.4L / m 2 .

[0030] Preferably, step S600 specifically includes the following steps:

[0031] S601. Spread the asphalt mixture in the lower layer around the manhole cover; compact it with an impact rammer for at least 3 times, and compact the corners with a compaction hammer to a compaction degree of more than 97%;

[0032] S602. Spread the asphalt mixture on the upper layer around the manhole cover; compact it using an impact rammer, the number of tamping is not less than 3 times, and the corners are compacted using a compaction hammer, and the compaction degree reaches more than 97%;

[0033] S603. Use an impact rammer to compact the asphalt around the installation limit well ring.

[0034] Preferably, step S900 specifically includes the following steps:

[0035] S901. Compacting along the outer ring of the adjustable anti-settling manhole cover using a rammer;

[0036] S902. Then use a flat rammer to roll the whole to keep the adjustable anti-settling manhole cover flat with the road surface around the well and the existing road surface;

[0037] S903. Use a roller of no less than 3t to roll the entire area until the asphalt compaction degree around the well reaches more than 97%.

[0038] Preferably, the manually preset temperature in step S1100 is 50°C.

[0039] Compared with the prior art, the present invention has the following advantages:

[0040] 1. The present invention can effectively ensure that the asphalt pavement around the inspection well cover is fully compacted, thus preventing common problems such as subsidence and damage around the well cover.

[0041] 2. The construction time of a single manhole cover of the present invention is about 2 hours. If flow operation is adopted, the construction time can be controlled to about 60 minutes. After the construction is completed, the surface temperature of the asphalt concrete drops below 50°C and traffic can be opened, thus meeting the functional requirements of convenient construction, fast repair, no recurrence of diseases in later operation, and beautiful and practical appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of the steps of removing the surrounding existing pavement structure layer according to a specific embodiment of the present invention;

[0043] Figure 2 A schematic diagram of the steps of removing an old manhole cover according to a specific embodiment of the present invention;

[0044] Figure 3 A schematic diagram of the steps of installing a concrete adjusting ring according to a specific embodiment of the present invention;

[0045] Figure 4 It is a schematic diagram of the steps of placing and installing the limiting well ring according to a specific embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of the steps of spraying emulsified asphalt according to a specific embodiment of the present invention;

[0047] Figure 6 It is a schematic diagram of the steps of filling asphalt layer by layer and compacting according to a specific embodiment of the present invention;

[0048] Figure 7 A schematic diagram of the steps of inserting an adjustable anti-sinking manhole cover according to a specific embodiment of the present invention;

[0049] Figure 8 It is a schematic diagram of the steps of flattening and compacting a manhole cover and an asphalt pavement according to a specific embodiment of the present invention;

[0050] Fig. 9 It is a schematic diagram of the sealing step of a specific embodiment of the present invention.

[0051] Among them: 1. The structural layer of the existing road surface, 2. The old inspection manhole cover, 3. The concrete adjustment ring, 4. The installation limit manhole ring, 5. The working interface, 6. The asphalt mixture, 7. The adjustable anti-settling manhole cover, 8. The manhole cover frame, 9. The joint DETAILED DESCRIPTION

[0052] The present invention is further explained below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0053] like Figures 1 to 9As shown, the construction method for inspecting and repairing manhole cover defects on the roadway includes the following steps:

[0054] S100. Cut off the structural layer 1 of the surrounding existing road surface.

[0055] S200. Take out the old manhole cover 2.

[0056] S300. Install concrete adjusting ring 3.

[0057] S400. Place and install the limiting well ring 4.

[0058] S500. Sprinkle emulsified asphalt onto the working joint surface 5.

[0059] S600. Fill the asphalt mixture 6 layer by layer around the manhole cover and compact the asphalt mixture 6.

[0060] S700. Take out the installation limit well ring 4 along the vertical direction.

[0061] S800. Align the installation hole and insert the adjustable anti-sinking manhole cover 7 into the installation hole.

[0062] S900. Flatten and compact the adjustable anti-sinking manhole cover 7 and the surrounding asphalt road surface.

[0063] S1000. Evenly spray the quick-setting hot asphalt onto the surface of the asphalt mixture 6 for sealing.

[0064] S1100. Clean the site and open traffic when the surface temperature of the quick-setting hot asphalt on the surface of the asphalt mixture 6 drops below a manually preset temperature.

[0065] It should be noted that step S100 specifically includes the following steps:

[0066] S101. Layout is performed with the center of the old manhole cover 2 as the starting point of the excavation measurement line.

[0067] S102. Use a cutting machine to cut the road surface.

[0068] S103. After the cutting is completed, a breaker is used to break and excavate the road surface structure within the cutting range around the old manhole cover 2, and at the same time, the side wall of the structural layer 1 of the existing road surface is roughened.

[0069] Among them, in step S101, the edge line of the road excavation is not less than 300mm from the inner edge of the manhole cover frame 8, and is not less than the damage range around the well, and the center of the manhole cover is used as the starting point of the excavation measurement line for layout; in step S102, the cutting shape is circular, and the cutting depth is selected according to different road conditions; after the cutting is completed, a breaker is used to crush and excavate the road surface structure within the cutting range around the manhole cover; in step S103, the depth range of roughening is 5mm~10mm, the spacing range of the roughening marks is 30mm, and the roughening rate is not less than 90%.

[0070] In step S200, before removing the old manhole cover 2, a slag tray of corresponding size is selected according to the diameter of the shaft and placed in the well chamber to ensure that no slag leaks into the well chamber during construction; after removing the old manhole cover 2, the operating surface is trimmed and cleaned, and the old manhole cover 2 is recovered to the transport vehicle.

[0071] It should be noted that step S300 specifically includes the following contents:

[0072] Deepen the depth of the broken road surface; ensure that the cutting line is perpendicular to the broken surface during breaking, then clean it up, and check the broken depth with a level and depth gauge; for shaft corrosion, damage or shaft wall collapse, demolish it to the intact interface, then use fast-hardening early-strength cement mortar for leveling and then install concrete adjustment ring 3; fix concrete adjustment rings 3 of different heights on the top of the shaft as needed.

[0073] It should be noted that step S400 specifically includes the following contents: placing the installation limit ring 4 into the concrete adjustment ring 3 in a socket-and-spigot manner, and ensuring that the installation limit ring 4 and the concrete adjustment ring 3 are vertically and closely attached.

[0074] It needs to be further explained that, if the existing wellhead size meets the requirements for manhole cover installation, a limiting well ring 4 can be directly placed on the wellhead, and the gap between the limiting well ring 4 and the wellhead can be sealed with sealant; the surface of the limiting well ring 4 can be evenly coated with an isolation agent.

[0075] It should be noted that the emulsified asphalt in step S500 is fast-setting hot asphalt; the fast-setting hot asphalt is evenly applied to the working joint surface 5 by a spraying device; the application of the fast-setting hot asphalt needs to extend 50 mm beyond the cutting surface, and the amount used is 0.2 L / m 2 ~0.4L / m 2 .

[0076] It should be noted that step S600 specifically includes the following steps:

[0077] S601. Spread the asphalt mixture 6 in the lower layer around the manhole cover; compact it with an impact rammer, with the number of tamping times not less than 3 times, and use a compaction hammer to compact the corners, with a compaction degree of more than 97%.

[0078] S602. Spread the asphalt mixture 6 on the upper layer around the manhole cover; compact it with an impact rammer, with the number of tamping times not less than 3 times, and use a compaction hammer to compact the corners, with a compaction degree of more than 97%.

[0079] S603. Use an impact rammer to compact the asphalt around the installation limit well ring 4.

[0080] It needs to be further explained that before paving, the temperature of the asphalt mixture 6 leaving the silo should be tested, the silo of the asphalt mixture road maintenance machine should be opened to discharge the material, and the receiving tray should be used to fill the estimated asphalt mixture 6 with a virtual paving coefficient of not less than 1.25 into the cutting range. When the thickness of the asphalt mixture 6 exceeds 80 mm, it should be paved in layers.

[0081] It should be further explained that the height of the top surface of the asphalt mixture 6 after compaction from the existing road surface should be 40 mm to 50 mm.

[0082] It is necessary to ensure that the asphalt is self-stable and does not collapse after the installation of the limit well ring 4 is removed. During construction, the temperature of the asphalt mixture 6 and the virtual thickness of the filler are simultaneously detected and adjusted.

[0083] It should be noted that when the installation limiting ring 4 is pulled out in step S700, the installation limiting ring 4 is loosened to ensure that the mold and the filling material are not adhered, and the installation hole is intact and the filling material is not loose, and then the installation limiting ring 4 is removed.

[0084] It should be noted that during the construction process in step S800, it should be ensured that the asphalt mixture around the installation hole is not deformed or collapsed by external forces.

[0085] It should be noted that step S900 specifically includes the following steps:

[0086] S901. Use an impact rammer to compact along the outer circle of the adjustable anti-sinking manhole cover 7.

[0087] S902. Then use a flat plate compactor to perform overall rolling to keep the adjustable anti-settling manhole cover 7 and the road surface around the manhole and the existing road surface flat.

[0088] S903. Use a roller of no less than 3t to roll the entire area until the asphalt compaction degree around the well reaches more than 97%.

[0089] It should be further explained that during the compaction process, the flatness and surface height are constantly checked and adjusted to ensure that after compaction, the manhole cover is not lower than the surrounding road surface and is not higher than the road surface by more than 3mm.

[0090] It should be noted that in step S1000, the quick-setting hot asphalt is evenly sprayed onto the surface of the joint (9) by a spraying device to seal the joint, and then a proper amount of dry sand is evenly sprinkled on the surface of the asphalt mixture, and leveling is performed with a flat rake. This process is repeated twice.

[0091] In this specific embodiment, the temperature manually preset in step S1100 is 50°C.

[0092] It should be noted that the present invention can effectively ensure that the asphalt pavement around the manhole cover is fully compacted, preventing common problems such as sinking and damage around the manhole cover, and achieving a single manhole cover construction time of about 2 hours. If flow operation is adopted, the construction time can be controlled to about 60 minutes. After the construction is completed, the surface temperature of the asphalt concrete drops below 50°C, and traffic can be opened. It meets the functional requirements of convenient construction, fast repair, no recurrence of diseases in later operation, and beautiful and practical use, and overcomes the current technical difficulty of fast repair of urban road manhole diseases, with significant social and economic benefits.

[0093] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0094] The disclosed embodiments are described above to enable any person skilled in the art to implement or use the present invention. Various modifications of these embodiments are obvious to those skilled in the art, and the general principles defined herein may also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0095] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

[0096] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A construction method for inspecting and repairing manhole cover defects on a roadway, characterized in that: The following steps are involved: S100. Remove the structural layer of the surrounding existing road surface (1); S200. Remove the old manhole cover (2); S300. Install the concrete adjustment ring (3); S400. Place and install the limit well ring (4); S500. Sprinkling emulsified asphalt onto the working surface (5); S600. Filling the asphalt mixture (6) layer by layer around the manhole cover and compacting the asphalt mixture (6); S700. Take out the installation limit ring (4) along the vertical direction; S800. Align the mounting hole and embed the adjustable anti-sinking manhole cover (7) into the mounting hole; S900. Flatten and compact the adjustable anti-sinking manhole cover (7) and the surrounding asphalt pavement; S1000. Evenly spraying the quick-setting hot asphalt onto the surface of the asphalt mixture (6) for sealing; S1100. Clean the site and open traffic when the surface temperature of the quick-setting hot asphalt on the surface of the asphalt mixture (6) drops below a manually preset temperature.

2. The construction method for inspecting and repairing manhole covers on a roadway according to claim 1, characterized in that: Step S100 specifically includes the following steps: S101. Stake out the center of the old manhole cover (2) as the starting point of the excavation measurement line; S102. Cut the road surface using a cutting machine; S103. After the cutting is completed, a breaker is used to break and excavate the road surface structure within the cutting range around the old manhole cover (2), and at the same time, the side wall of the structural layer (1) of the existing road surface is roughened; The distance between the edge of the road excavation in step S101 and the inner edge of the manhole cover frame (8) is not less than 300 mm, and not less than the damaged range around the manhole; the shape of the cutting in step S102 is circular, and the cutting depth is selected according to different road surface conditions; the depth interval of the roughening in step S103 is 5 mm to 10 mm, the spacing interval of the roughening marks is 30 mm, and the roughening rate is not less than 90%.

3. The construction method for inspecting and repairing manhole covers on a roadway according to claim 2, characterized in that: In step S200, before taking out the old manhole cover (2), a slag tray of corresponding size is selected according to the diameter of the shaft and placed in the well chamber to ensure that no slag leaks into the well chamber during the construction process; after taking out the old manhole cover (2), the operating surface is trimmed and cleaned, and the old manhole cover (2) is recovered to the transport vehicle.

4. The construction method for inspecting and repairing manhole covers on a roadway according to claim 3, characterized in that: Step S300 specifically includes the following contents: The depth of the broken road surface is deepened; when breaking, the cutting line is ensured to be perpendicular to the broken surface, and then it is cleaned up, and the broken depth is checked by a level ruler and a depth gauge; for the wellbore corrosion, damage or well wall collapse, it is demolished to the intact interface, and then the quick-hardening early-strength cement mortar is used for leveling and then the concrete adjustment ring (3) is installed.

5. The construction method for inspecting and repairing manhole covers on a roadway according to claim 4, characterized in that: Step S400 specifically includes the following contents: placing the installation limiting well ring (4) into the concrete adjusting ring (3) in a socket-and-spigot manner, and ensuring that the installation limiting well ring (4) and the concrete adjusting ring (3) are vertically and closely attached to each other.

6. The construction method for inspecting and repairing manhole covers on a roadway according to claim 5, characterized in that: The emulsified asphalt in step S500 is the fast-setting hot asphalt; the fast-setting hot asphalt is evenly applied to the working joint surface (5) using a spraying device; the fast-setting hot asphalt needs to be applied 50 mm beyond the cutting surface, and the amount used is 0.2 L / m 2 ~0.4L / m 2 .

7. The construction method for inspecting and repairing manhole covers on a roadway according to claim 6, characterized in that: Step S600 specifically includes the following steps: S601. Spread the asphalt mixture (6) around the lower layer of the manhole cover; compact it using an impact rammer, tamping the number of times not less than 3 times, and compact the corners using a compaction hammer to achieve a compaction degree of more than 97%; S602. Spread the asphalt mixture (6) on the upper layer around the manhole cover; compact it using an impact rammer, tamping the number of times not less than 3 times, and compact the corners using a compaction hammer to achieve a compaction degree of more than 97%; S603. Use an impact rammer to compact the asphalt around the installation limit well ring (4).

8. The construction method for inspecting and repairing manhole covers on a roadway according to claim 7, characterized in that: Step S900 specifically includes the following steps: S901. Compacting along the outer ring of the adjustable anti-settling manhole cover (7) using a rammer; S902. Then use a flat rammer to roll the whole to keep the adjustable anti-settling manhole cover (7) flat with the road surface around the well and the existing road surface; S903. Use a roller of no less than 3t to roll the entire area until the asphalt compaction degree around the well reaches more than 97%.

9. The construction method for inspecting and repairing manhole covers on a roadway according to claim 8, characterized in that: The manually preset temperature in step S1100 is 50°C.

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