CN116950132A - Reinforced sedimentation prevention technology for municipal road manhole cover - Google Patents
Reinforced sedimentation prevention technology for municipal road manhole cover Download PDFInfo
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- CN116950132A CN116950132A CN202311094024.3A CN202311094024A CN116950132A CN 116950132 A CN116950132 A CN 116950132A CN 202311094024 A CN202311094024 A CN 202311094024A CN 116950132 A CN116950132 A CN 116950132A
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- Prior art keywords
- well
- manhole cover
- framework
- municipal road
- supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 title claims description 5
- 230000002265 prevention Effects 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 239000004567 concrete Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 24
- 239000010426 asphalt Substances 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 claims abstract description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 230000002441 reversible effect Effects 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims description 17
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 7
- 101100366060 Caenorhabditis elegans snap-29 gene Proteins 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 7
- 239000011150 reinforced concrete Substances 0.000 description 7
- 239000011384 asphalt concrete Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The application relates to an enhanced anti-sedimentation process for municipal road manhole covers, which comprises the following steps: the construction is stable, reverse digging grooves are cut and excavated, and a concrete prefabricated cover plate is installed; positioning height of the positioning well cover; bending a steel bar circular ring to be used as a supporting ring and cutting a supporting piece; welding the supporting ring and the supporting piece to form a framework; cutting and installing a pipe sleeve, and arranging spiral steel bars around the outer periphery of the pipe sleeve; the pipe sleeve is filled with asphalt cement, and the supporting piece is inserted into the pipe sleeve; placing a well cover on the framework; and (3) reinforcing steel bars are reinforced outside the framework Zhou Bangza, well reinforcing concrete is poured in the reverse digging groove, and an asphalt layer is paved. The framework prepared by using the reinforcing steel bars is used for replacing the cushion blocks to support and overhead the well cover, so that the structural strength of the support well cover is increased, meanwhile, the steel sleeve is used as a sleeve fixing framework, spiral reinforcing steel bars are arranged on the periphery of the sleeve, the structural strength is further increased, the strength and stability of the well cover are improved, the service lives of roads and the well cover are prolonged, and the overall sedimentation preventing capability and flatness of the periphery of the well cover can be greatly improved.
Description
Technical Field
The application relates to an enhanced anti-sedimentation process for a municipal road manhole cover, and belongs to the field of municipal engineering.
Background
The manhole cover is convenient for maintenance and installation of power supply, water drainage, pollution discharge, communication, cable television, gas pipe, street lamp line and the like of urban underground infrastructure. The device is generally arranged at the junction of pipelines, at the turning position, at the position of pipe diameter or gradient change and at certain intervals on the straight pipe section, so that the device is convenient for periodically checking auxiliary structures.
When the existing manhole cover is installed, a bottom and a middle water stabilizing layer are needed to be manually dug reversely, the periphery of the well is dug to the elevation of a shaft by 30-50cm, bulk materials are cleaned, a bowl-shaped section is formed, and a concrete prefabricated cover plate is placed. Four crisscross lines are pulled around the well lid during installation, elevation of the top surface of the well lid is carefully adjusted, longitudinal slopes and transverse slopes of the well lid are adjusted to be consistent with a road surface, and the well lid is fixed by cushion blocks after being adjusted in place, integrally poured with concrete and vibrated compactly. Wherein the cushion block is generally a cement brick or the like. And (3) for installing the anti-sedimentation well cover, reversely excavating the well cover manually, taking out the longitudinal slope and the transverse slope of the well cover, adjusting the longitudinal slope and the transverse slope in place, fixing the well cover by using a cushion block, integrally pouring unloading plate concrete, inserting a limiting well ring after the construction of the unloading plate is completed, covering the limiting well cover, brushing diesel oil on the outer surfaces of the limiting well ring and the limiting well cover before the limiting well cover is inserted, spraying adhesive layer oil on the unloading plate before paving the asphalt surface layer, and then layering and pushing the asphalt surface layer. After spreading the asphalt of the lower layer, digging out the asphalt at the position of the limiting well lid, and gradually lifting the limiting well ring and the cover to a position higher than the coarse asphalt paving position by 1cm while filling asphalt materials by an operator. After the upper layer of asphalt concrete is paved and initially pressed, the installation limiting well ring is taken out carefully vertically, 1-3cm of asphalt concrete is added within the range of 15cm below the well cover flange plate, meanwhile, the adjustable anti-sedimentation well cover is put in vertically carefully, and finally, the well cover is pressed into the road surface by a vibratory roller.
Whether the common well lid or the anti-sinking well lid is installed, the well lid is required to be elevated by using a cushion block to perform elevation and gradient positioning so that the well lid can be kept on the same horizontal plane with the road surface. In subsequent pouring, the cushion is located wherein, but the intensity of current cushion is little, and easy cracked, the fastness that combines with well reinforced concrete is poor, and through long-term vehicle load, the cushion is cracked after the traffic, causes the well lid to sink, and asphalt concrete and well lid subside inconformity simultaneously, and long-term atress leads to cracking around the well lid, and the road is uneven, reduces road life, and prior art can't solve this problem.
Disclosure of Invention
The application aims to provide an enhanced anti-sedimentation process for a municipal road manhole cover, which can ensure that the manhole cover has high strength, strong stability, difficult sedimentation and long service life.
In order to achieve the above purpose, the present application provides the following technical solutions: an enhanced anti-sedimentation process for municipal road manhole covers, which comprises the following steps:
(1) The construction is stable, the center of the inspection well lid is used as the center of the circle, the reverse digging groove is cut and excavated, and a concrete prefabricated cover plate is installed;
(2) Positioning height of the well lid is set out by a belt line, and the positioning height is vertical height from four corners of a well lid frame body to an upper opening of the concrete prefabricated cover plate;
(3) Bending a steel bar circular ring to serve as a supporting ring according to the size of the well lid; cutting a plurality of steel bars as supporting pieces according to the positioning height and the thickness of the supporting ring;
(4) Welding the supporting ring and the supporting pieces to form a framework, wherein the framework comprises at least three supporting pieces which are arranged at intervals;
(5) Aligning the centers of the framework and the manhole cover, arranging the support piece at the position of the concrete prefabricated cover plate as a marking position, cutting a plurality of steel sleeves as sleeves, placing the sleeves at the marking position of the concrete prefabricated cover plate, and arranging spiral steel bars around the outer periphery of the sleeves;
(6) The pipe sleeve is filled with asphalt cement, and the supporting piece is inserted into the pipe sleeve;
(7) Placing a well cover on the framework;
(8) And (3) well reinforcing steel bars are arranged outside the framework, well reinforcing concrete is poured into the reverse digging grooves, and an asphalt layer is paved.
Further, the carrier ring is a phi 16 steel bar ring; the supporting piece is phi 28 steel bars; the pipe sleeve is a phi 108 steel pipe sleeve.
Further, the height of the skeleton is the same as the positioning height.
Further, the height of the skeleton is the sum of the length of the support piece and the thickness of the supporting ring.
Further, the length of the sleeve is less than the length of the support.
Further, at least three supporting pieces are distributed at equal intervals along the supporting ring.
Further, after the reinforcement of the Zhou Bangza well outside the framework, the process further comprises bending the reinforcement with hooks at the first ends according to the size of the reinforcement of the well, welding the hooks of the anti-falling members with the second ends of the reinforcement to serve as mounting members, arranging a plurality of mounting members on the reinforcement of the well, hooking the periphery of the reinforcement of the well by the hooks, and positioning the hooks in the manhole cover.
Further, the plurality of mounting members are provided in a plurality, and the plurality of mounting members are substantially uniformly arranged along the circumference and substantially horizontal.
Further, the process also includes installing a fall arrest member on the mounting member.
Further, the anti-falling member is an anti-falling net or an anti-falling plate.
The application has the beneficial effects that: this reinforcing type anti-sedimentation technology replaces the cushion through using the skeleton of reinforcing bar preparation to support and aerial well lid, increase the structural strength who supports the well lid, the steel bushing is as the fixed skeleton of pipe box simultaneously, and set up spiral reinforcing bar around the pipe box outward, further increase structural strength, the skeleton, the pipe box is strong with the bonding fastness of well reinforced concrete, improve the intensity and the stability of inspection well lid, the furthest settlement problem of inspection well lid of solving increases the life of road and well lid, can promote whole anti-sedimentation ability around the inspection well lid and the roughness around the well lid by a wide margin.
The foregoing description is only an overview of the present application, and is intended to provide a better understanding of the present application, as it is embodied in the following description, with reference to the preferred embodiments of the present application and the accompanying drawings.
Drawings
FIG. 1 is a sectional view of a manhole cover construction structure of the present application.
Fig. 2 is a partial enlarged view of fig. 1.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the mechanisms or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present application described below may be combined with each other as long as they do not collide with each other.
The application relates to an enhanced anti-sedimentation process of an inspection well lid of a municipal road, which is used for constructing the inspection well lid on the ground, wherein the inspection well lid comprises a well seat and a well cover plate.
Referring to fig. 1 and 2, the strong anti-sedimentation process is suitable for common well covers and anti-sedimentation well covers. The process comprises the following steps:
(1) The construction is stable, the center of the inspection well lid is used as the center of the circle, the reverse digging groove is cut and excavated, the concrete prefabricated cover plate 2 is installed on the shaft 1, the construction can be carried out according to the conventional process in the prior art, and the description is omitted here.
(2) The positioning height of the well lid is positioned by laying out the sample with a line, and the positioning height is the vertical height from four corners of the frame body of the well lid 3 to the upper opening of the precast concrete cover plate 2. Obviously, the well seat of the well lid 3 needs to be supported and overhead, so that the subsequent well lid 3 plate and the surrounding road surface are positioned on the same horizontal plane, and the road flatness is ensured. For this purpose, the height of the manhole cover 3 needs to be positioned. In actual operation, the vertical height between the upper surface of the asphalt layer and the concrete prefabricated cover plate 2 is measured, and then the thicknesses of the four corners of the frame body of the well seat of the well cover 3 are measured, and the positioning height can be obtained by subtracting the two thicknesses.
(3) Bending a steel bar circular ring to serve as a supporting ring 4 according to the size of the well lid 3; a plurality of reinforcing bars are cut as the supporting pieces 5 according to the positioning height and the thickness of the supporting ring 4. Wherein, the carrier ring 4 is a phi 16 steel bar ring, and the supporting piece 5 is a phi 28 steel bar, so as to ensure the strength of the carrier ring 4 and the supporting piece 5.
(4) The backing ring 4 and the supporting pieces 5 are welded to form a framework, and the framework comprises at least three supporting pieces 5 arranged at intervals. The skeleton replaces the cushion to support and the overhead well seat, and the well seat is arranged on the backing ring 4 of the skeleton, so that the diameter of the backing ring 4 is smaller than that of the well seat. The height of the framework is the same as the positioning height. Specifically, the height of the skeleton is the sum of the length of the supporting piece 5 and the thickness of the supporting ring 4, so that the height of the well lid 3 is accurately controlled. In a preferred embodiment, at least three support members 5 are equally spaced along the ring 4. To ensure the strength of the skeleton, the support 5 may be provided with five, six, seven, etc., not illustrated here.
(5) The framework is aligned with the center of the manhole cover 3, the supporting piece 5 is arranged at the position of the concrete prefabricated cover plate 2 to serve as a marking position, a plurality of steel sleeves are cut to serve as sleeves 6, the sleeves 6 are placed at the marking position of the concrete prefabricated cover plate 2, and spiral steel bars 7 are arranged around the outer periphery of the sleeves 6. Wherein the sleeve 6 is a phi 108 steel sleeve. The length of the pipe sleeve 6 is smaller than that of the supporting piece 5 so as to ensure that the bottom end of the supporting piece 5 is abutted on the precast concrete cover plate 2. The pipe sleeve 6 and the spiral steel bars 7 further improve the strength and the installation stability of the framework.
(6) The sleeve 6 is filled with asphalt cement and the support 5 is inserted into the sleeve 6. Asphalt cement can stably connect the support 5 and the socket 6 together.
(7) A well lid 3 is placed on the framework.
(8) And (3) reinforcing steel bars 8 are reinforced outside the skeleton Zhou Bangza, well reinforcing concrete 9 is poured in the reverse digging groove, and an asphalt layer 10 is paved. The framework, the pipe sleeve 6 and the spiral steel bars 7 are all prepared by using steel bars, after the reinforced concrete 9 is poured into the well, the reinforced concrete structure can be formed by the reinforced concrete structure and concrete, the strength of the support well cover 3 is guaranteed, the strength and the stability of the inspection well cover 3 are improved, the sedimentation problem of the inspection well cover 3 is solved to the greatest extent, the service lives of roads and the inspection well cover 3 are prolonged, and the overall sedimentation preventing capacity around the inspection well cover 3 and the flatness around the inspection well cover 3 can be greatly improved.
Obviously, for the anti-sedimentation well cover, the process also comprises inserting a limiting well ring and the like, which are the same as the prior art, and are not repeated here.
In the prior art, 8 expansion bolt hole sites are determined on the inner wall of a prefabricated reinforced concrete cover plate, the holes are approximately equally distributed along the circumference and are basically horizontal, the bolts are embedded in the cover plate when the cover plate is poured, the bolts are inserted into the concrete wall of the cover plate for a proper length, meanwhile, the hooks are upwards, the anti-falling net is hung after the construction is finished, the problem of infirm is obvious in the installation mode, meanwhile, the embedded expansion bolts are drilled after the pouring is finished, the construction time is prolonged, and the construction efficiency is low.
Referring to fig. 1 and 2, in an embodiment, after the well reinforcing steel bar 8 is reinforced outside the skeleton by Zhou Bangza, the process further includes bending the steel bar 14 with hooks at the first ends according to the size of the well reinforcing steel bar 8, welding the hooks 12 of the anti-falling member 11 with the second ends of the steel bar 14 as the mounting members 13, and disposing a plurality of mounting members 13 on the well reinforcing steel bar 8, wherein the hooks hook the periphery of the well reinforcing steel bar 8, and the hooks are located in the manhole cover 3. By adopting the construction process of the embedded hooks, the simultaneous construction of the positioning of the well lid 3 and the embedding of the hooks of the anti-falling piece 11 is realized, the embedded expansion screws do not need to be drilled after pouring is completed, and the construction efficiency is greatly improved. And the first end of the mounting piece 13 hooks the well reinforcing steel bar 8, so that the stability of the mounting piece is improved, and meanwhile, the mounting piece made of the steel bar material and the well reinforcing concrete 9 realize a concrete steel bar structure, so that the strength of the structure is ensured.
In order to secure the mounting stability of the fall arrest member, the mounting member 13 is provided in plurality, and the plurality of mounting members 13 are substantially uniformly arranged along the circumference and substantially horizontally. The process also comprises the step of installing the anti-falling member 11 on the installation member 13 after the construction of the asphalt layer 10 is completed, wherein the anti-falling member 11 is an anti-falling net or an anti-falling plate.
In general, this enhancement mode anti-sedimentation technology replaces the cushion through using the skeleton of reinforcing bar preparation to support and built on stilts well lid, increases the structural strength who supports the well lid, and the steel bushing is as the fixed skeleton of pipe box simultaneously to establish spiral reinforcing bar around the pipe box, further increase structural strength, skeleton, pipe box and well reinforced concrete's combination fastness is strong, improves the intensity and the stability of inspection well lid, and the furthest solves the inspection well lid problem of subsidence, increases the life of road and well lid, can promote whole anti-sedimentation ability around the inspection well lid and the roughness around the well lid by a wide margin.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. The utility model provides a municipal administration road manhole cover enhancement mode prevents subsidence technology which characterized in that includes the following steps:
(1) The construction is stable, the center of the inspection well lid is used as the center of the circle, the reverse digging groove is cut and excavated, and a concrete prefabricated cover plate is installed;
(2) Positioning height of the well lid is set out by a belt line, and the positioning height is vertical height from four corners of a well lid frame body to an upper opening of the concrete prefabricated cover plate;
(3) Bending a steel bar circular ring to serve as a supporting ring according to the size of the well lid; cutting a plurality of steel bars as supporting pieces according to the positioning height and the thickness of the supporting ring;
(4) Welding the supporting ring and the supporting pieces to form a framework, wherein the framework comprises at least three supporting pieces which are arranged at intervals;
(5) Aligning the centers of the framework and the manhole cover, arranging the support piece at the position of the concrete prefabricated cover plate as a marking position, cutting a plurality of steel sleeves as sleeves, placing the sleeves at the marking position of the concrete prefabricated cover plate, and arranging spiral steel bars around the outer periphery of the sleeves;
(6) The pipe sleeve is filled with asphalt cement, and the supporting piece is inserted into the pipe sleeve;
(7) Placing a well cover on the framework;
(8) And (3) well reinforcing steel bars are arranged outside the framework, well reinforcing concrete is poured into the reverse digging grooves, and an asphalt layer is paved.
2. The enhanced anti-sedimentation process for municipal road manhole cover according to claim 1, wherein the carrier ring is a phi 16 steel bar ring; the supporting piece is phi 28 steel bars; the pipe sleeve is a phi 108 steel pipe sleeve.
3. The enhanced anti-settling process for municipal road manhole cover according to claim 1, wherein the height of the skeleton is the same as the positioning height.
4. The enhanced anti-settling process of municipal road manhole cover according to claim 1, wherein the height of the skeleton is the sum of the length of the support and the thickness of the carrier ring.
5. The enhanced anti-settling process for municipal road manhole cover according to claim 1, wherein the length of the tube sleeve is smaller than the length of the support member.
6. The enhanced anti-settling process for municipal road manhole cover according to claim 1, wherein at least three of the supporting members are arranged at equal intervals along the carrier ring.
7. The reinforced anti-settling process for municipal road manhole cover according to claim 1, wherein after the reinforcement of the well Zhou Bangza outside the skeleton, the process further comprises bending the reinforcement having hooks at the first ends according to the size of the well reinforcement, and welding the hooks of the anti-falling member with the second ends of the reinforcement as mounting members, wherein a plurality of the mounting members are disposed on the well reinforcement, the hooks hook the periphery of the well reinforcement, and the hooks are disposed in the manhole cover.
8. The enhanced anti-settling process for municipal road manhole cover according to claim 7, wherein a plurality of said mounting members are provided, and a plurality of said mounting members are arranged substantially uniformly along the circumference and substantially horizontally.
9. The enhanced anti-settling process for municipal road manhole cover according to claim 7, further comprising installing an anti-drop member on the installation member.
10. The enhanced anti-settling process for municipal road manhole cover according to claim 7, wherein the anti-drop member is an anti-drop net or an anti-drop plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311094024.3A CN116950132A (en) | 2023-08-29 | 2023-08-29 | Reinforced sedimentation prevention technology for municipal road manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311094024.3A CN116950132A (en) | 2023-08-29 | 2023-08-29 | Reinforced sedimentation prevention technology for municipal road manhole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116950132A true CN116950132A (en) | 2023-10-27 |
Family
ID=88449357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311094024.3A Pending CN116950132A (en) | 2023-08-29 | 2023-08-29 | Reinforced sedimentation prevention technology for municipal road manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116950132A (en) |
-
2023
- 2023-08-29 CN CN202311094024.3A patent/CN116950132A/en active Pending
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