Buried culvert maintenance method

Abstract

The invention provides an underground culvert overhaul method, relates to the technical field of underground culvert overhaul and maintenance, aims to solve the problem of urban inland inundation, is an effective quality-improving and efficiency-improving method for additionally arranging an overhaul well when an underground culvert is constructed, and aims to additionally arrange or expand an overhaul port and construct a perfect overhaul system according to the current urban underground culvert and the current situation. The method is an important measure for improving the urban inland inundation treatment capacity and the buried culvert maintenance efficiency, a perfect ecological restoration system is constructed for large dredging or buried culvert review, and the technical problems that in the prior art, an existing buried culvert is poor in urban inland inundation solving capacity and low in buried culvert maintenance efficiency are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of culvert inspection and maintenance, and in particular to a culvert inspection method. Background Art

[0002] With the acceleration of the urbanization process, some river channels have been covered to form culverts. Although these culverts meet some needs of urban development, they also bring many problems and challenges. Environmentally, the interior of the culvert is enclosed, there are many sewage outlets, and a large amount of untreated domestic sewage is directly discharged, resulting in thick silt accumulation at the bottom, emitting a foul smell, destroying the ecological system, and reducing biodiversity. Structurally, the culvert is prone to diseases such as cracks and leaks, reducing its service value and even causing safety accidents. Moreover, the construction is difficult, mostly located under municipal roads, and it is difficult to open holes and conduct traffic control. In terms of dredging and maintenance, the internal space of the culvert is narrow, there are toxic and harmful gases, dredging is difficult and costly, and the urban culvert is becoming increasingly narrow due to long-term lack of dredging, resulting in poor water flow. In case of heavy rain and high tide, it cannot be discharged in time, causing urban waterlogging. Socially, the foul smell and pollution seriously affect the lives of residents, damage the urban image, and are not conducive to sustainable development. In terms of governance, there are many outlets and the structure is complex, making it difficult to trace the source. Advanced technologies are needed, and it involves coordination among multiple departments, with great difficulty. Summary of the Invention

[0003] The purpose of the present invention is to provide a culvert inspection method to alleviate the technical problems in the prior art that the culvert has poor ability to solve urban waterlogging and low culvert maintenance efficiency.

[0004] The culvert inspection method provided by the present invention includes the following steps:

[0005] When constructing the culvert, an inspection structure is added, wherein the inspection structure includes an inspection well and a rainwater collection port;

[0006] For the existing culverts in the city, inspection openings are added or enlarged in combination with the current situation;

[0007] A new dredging and inspection opening for large equipment to enter is added;

[0008] The culvert is restored to daylight.

[0009] In an alternative embodiment,

[0010] The step of adding an inspection structure when constructing the culvert includes the following steps:

[0011] When constructing the culvert, a new inspection well is built. The inspection well is arranged at the pipe intersection, turning point, where the pipe diameter or slope changes, the drop water point, and at regular intervals on the straight pipe section. According to the layout of the rainwater inlets, inspection wells are added at intervals.

[0012] In an alternative embodiment,

[0013] The steps for adding a maintenance structure during the construction of the culvert also include the following:

[0014] Add rainwater pipe networks on both sides of the culvert. At a certain water collection distance, connect the rainwater pipes to the newly built culvert through openings in the side walls.

[0015] In an alternative embodiment,

[0016] The steps for adding or enlarging inspection openings to the existing urban culverts in combination with the actual situation include the following:

[0017] Enlarge or block the inspection openings;

[0018] Reinforce the side wall drainage outlets;

[0019] Block the abnormal drainage outlets;

[0020] Add inspection openings according to the culvert structure.

[0021] In an alternative embodiment,

[0022] The steps for enlarging or blocking the inspection openings include the following:

[0023] For the inspection openings within a certain range on the culvert, carry out blocking treatment;

[0024] For the areas where the setting spacing is within the certain range and the size of the inspection openings is smaller than a certain size, carry out hole enlarging treatment.

[0025] In an alternative embodiment,

[0026] The steps for reinforcing the side wall drainage outlets include the following:

[0027] Reinforce the connection between the existing rainwater pipe drainage outlet and the culvert.

[0028] In an alternative embodiment,

[0029] The steps for blocking the abnormal drainage outlets include the following:

[0030] Analyze the existing abnormal drainage outlet system. For the direct current sewage drainage outlet, connect the pollution source to the sewage pipe network and block the direct current sewage drainage outlet.

[0031] In an alternative embodiment,

[0032] The steps for adding inspection openings according to the culvert structure include the following:

[0033] For the box culvert with precast covers, according to the distribution of the structural beams of the culvert, locally break the culvert cover and add inspection openings at this place;

[0034] For the concrete culvert, when adding a maintenance opening, drilling is carried out, and steel bars are lapped with the existing culvert. Subsequently, a new maintenance opening for the culvert is added at this location, and concrete pouring is carried out.

[0035] In an alternative embodiment,

[0036] The steps for adding a new dredging and maintenance opening for large equipment to enter are as follows:

[0037] Rectangular holes are spaced on the culvert of the reinforced concrete structure. When drilling, the two sides of the culvert are supported. Through roughening and planting steel bars, lining with reinforced concrete, and adding cross braces, the stability is ensured.

[0038] In an alternative embodiment,

[0039] The steps for restoring the visibility of the culvert are as follows:

[0040] Remove the culvert cover plate, carry out dredging operations on the culvert, and review the structural stability of the culvert. Reinforce the unstable parts.

[0041] The culvert maintenance method provided by the present invention is an effective method to improve quality and efficiency by adding inspection wells when constructing culverts to solve the problem of urban waterlogging. For the existing urban culverts, adding or expanding maintenance openings in combination with the actual situation to build a perfect maintenance system is an important measure to improve the urban waterlogging treatment capacity and culvert maintenance efficiency. For large-scale dredging or culvert restoration, building a perfect ecological restoration system alleviates the technical problems of poor urban waterlogging solution ability and low culvert maintenance efficiency existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0043] Figure 1 It is a detailed drawing of the newly added maintenance structure of the culvert in the culvert maintenance method provided by the embodiment of the present invention;

[0044] Figure 2 For Figure 1 The sectional view taken along 1-1 in

[0045] Figure 3 For Figure 1 The sectional view taken along 2-2 in

[0046] Figure 4 It is a detailed drawing of the culvert hole expansion with soil covering practice in the culvert maintenance method provided by the embodiment of the present invention;

[0047] Figure 5 is Figure 4 Cross-sectional view of 1-1 in

[0048] Figure 6 is Figure 4 Cross-sectional view of 2-2 in

[0049] Figure 7 is the enlarged view of the culvert hole expansion of the culvert inspection method provided by the embodiment of the present invention without overburden

[0050] Figure 8 is Figure 7 Structural schematic diagram of 1-1 in

[0051] Figure 9 is Figure 7 Structural schematic diagram of 2-2 in

[0052] Figure 10 is the enlarged view of the culvert silt cleaning inspection port of the culvert inspection method provided by the embodiment of the present invention

[0053] Figure 11 is the enlarged plan view of the culvert opening of the culvert inspection method provided by the embodiment of the present invention

[0054] Figure 12 is the restored cross-sectional view of the construction temporary opening point of the culvert inspection method provided by the embodiment of the present invention

[0055] Figure 13 is the enlarged view of the side wall reinforcement of the culvert inspection method provided by the embodiment of the present invention

[0056] Figure 14 is the enlarged view of the culvert restoration of the culvert inspection method provided by the embodiment of the present invention

[0057] Icon: 10 - ladder; 100 - culvert; 200 - inspection well; 300 - opening; 400 - inspection port; 500 - rainwater inlet Specific implementation manner

[0058] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0059] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0060] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0062] The inspection method for the culvert 100 provided in this embodiment includes a daily inspection system, an emergency inspection system, and a side wall rainwater drain system, and specifically includes the following steps: adding an inspection structure when constructing the culvert 100, wherein the inspection structure includes an inspection well 200 and a rainwater collection port; for the existing culvert 100 in the city, adding or expanding an inspection opening 400 in combination with the actual situation; adding a dredging inspection opening 400 for large equipment to enter; and restoring the culvert 100 to daylight.

[0063] Specifically, to solve the problem of urban waterlogging, adding an inspection well 200 when constructing the culvert 100 is an effective method to improve quality and efficiency, including but not limited to: newly building an inspection well 200 and adding a rainwater collection port on the side wall.

[0064] For the existing culvert 100 in the city, adding or expanding an inspection opening 400 in combination with the actual situation and constructing a complete inspection system are important measures to improve the urban waterlogging treatment capacity and the maintenance efficiency of the culvert 100, including but not limited to: expanding the inspection opening 400; strengthening the side wall drain; blocking abnormal drains; adding inspection openings 400 according to different culvert 100 structures.

[0065] For large-scale dredging or restoring the culvert 100 to daylight, constructing a complete ecological restoration system, including but not limited to: adding a dredging inspection opening 400 for large equipment to enter; restoring the culvert 100 to daylight without affecting normal human life.

[0066] Furthermore, as shown in Figure 1 , Figure 2 and Figure 3 , when constructing the culvert 100, the additional maintenance structure includes the following steps: When constructing the culvert 100, a new inspection well 200 is built. The inspection well 200 is arranged at the pipe intersection, turning point, where the pipe diameter or slope changes, at the drop water point, and at certain intervals on the straight pipe section. According to the layout of the rainwater inlet 500, an inspection well 200 is added every 50m on the straight line, forming inspection wells 200 arranged at intervals.

[0067] It should be noted that a ladder 10 is also arranged in the inspection well 200 for maintenance personnel to use.

[0068] Furthermore, when constructing the culvert 100, the additional maintenance structure also includes the following steps: For the water collection range of the culvert 100, rainwater pipe networks are added on both sides of the culvert 100. At a certain water collection distance, through the side wall opening, the rainwater pipe is connected to the newly built culvert 100.

[0069] For the existing urban culvert 100, adding or expanding the inspection opening 400 in combination with the existing situation includes the following steps: expanding or blocking the inspection opening 400; strengthening the side wall drainage outlet; blocking the abnormal drainage outlet; adding an inspection opening 400 according to the structure of the culvert 100.

[0070] Furthermore, as shown in Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 , among which, Figure 4 , Figure 5 , Figure 6 are the large-scale drawings of the reaming construction with the soil covering method, Figure 7 , Figure 8 and Figure 9 are the large-scale drawings of the reaming without the soil covering method. Expanding or blocking the inspection opening 400 includes the following steps: For the inspection openings 400 within a certain range on the culvert 100, blocking treatment is carried out, and the certain range is set to 40 meters, and the specific range can be selected according to the actual situation.

[0071] For the areas where the setting spacing is within a certain range and the size of the inspection opening 400 is smaller than a certain size, reaming treatment is carried out. Specifically, for the areas where the setting spacing is within 40 meters and the size of the inspection opening 400 is less than or equal to 700mm, reaming treatment should be carried out, and the size of the reamed inspection opening 400 should be uniformly 800mm×800mm to meet the access requirements of maintenance personnel and equipment.

[0072] Furthermore, as shown inFigure 13 As shown in the figure, the steps for strengthening the side wall outlets of the culvert include: strengthening the connection between the existing rainwater pipe outlet and the culvert 100. Specifically, for the structural hidden dangers or groundwater infiltration problems existing at the connection between the existing rainwater pipe outlet and the culvert 100, these connection points are strengthened to ensure the stability and waterproof performance of the culvert 100 structure.

[0073] Furthermore, the steps for blocking abnormal outlets include: analyzing the existing abnormal outlet system. For the direct sewage outlets, the pollution sources are connected to the sewage pipe network, and these direct sewage outlets are blocked.

[0074] Furthermore, the steps for adding inspection openings 400 according to the structure of the culvert 100 include: adding inspection openings 400 according to different culvert 100 structures. For the box culvert with precast covers, according to the distribution of the structural beams of the culvert 100, a part of the cover of the culvert 100 is locally demolished, and an inspection opening 400 is added at this place. For the concrete culvert 100, when adding an inspection opening 400, a 1-meter-wide opening 300 is made at this place, and steel bars are lapped with the existing culvert 100. Then, an inspection opening 400 for the culvert 100 is newly added at this place, and concrete is poured in this area to ensure the stability and safety of the structure.

[0075] Furthermore, as Figure 10 、 Figure 11 and Figure 12 shown, the steps for adding a silt removal and inspection opening 400 for large equipment to enter include: making rectangular holes at intervals on the culvert 100 with a reinforced concrete structure. When making the opening 300, the two sides of the culvert 100 are supported, and through roughening and planting steel bars, lining with reinforced concrete, and adding cross braces, the stability is ensured.

[0076] Specifically, for the silt removal of large equipment in the culvert 100, an opening 300 needs to be made on the culvert 100 with a reinforced concrete structure. The size of the opening 300: not less than 5 meters in the direction along the water flow, and the width is the full width of the box culvert. The openings 300 are spaced about 50 meters apart and are selected in open areas to reduce the impact on municipal roads and houses. When making the opening 300, the two sides of the culvert 100 need to be supported. A well-type retaining wall is recommended. Through roughening and planting steel bars, lining with C30 reinforced concrete, and adding 20cm×20cm cross braces at a spacing of 2 meters, the stability is ensured.

[0077] Furthermore, as Figure 14 shown, the steps for restoring the visibility of the culvert 100 include: removing the cover of the culvert 100, carrying out silt removal operations on the culvert 100, and rechecking the structural stability of the culvert 100. The unstable parts are strengthened. In addition, ecological restoration will be carried out on the restored section, and footpaths on both sides along the street will be designed to improve the overall quality and functionality of the area.

[0078] At present, there is little systematic research on the renovation of the urban culvert 100. Compared with the previous renovation of the water environment culvert 100, the present invention has the following advantages and beneficial effects:

[0079] (1) New culverts 100 are added in the waterlogging area and new inspection openings 400 are set up, which not only solve the urban waterlogging problem, improve the efficiency of the drainage system, but also enhance the resilience of the city, ensure construction safety, facilitate maintenance and management, improve the city image, and promote economic development.

[0080] (2) Optimize the inspection openings 400 of the existing culverts 100, which can not only promote the safety of confined space operations, but also have the following advantages: expanding the size of the inspection openings 400 is convenient for large equipment and personnel to enter and exit, improving the operation efficiency and safety; the optimized inspection openings 400 improve the ventilation conditions, reduce the accumulation of toxic and harmful gases, and ensure the health of the operating personnel; the reasonable layout of the inspection openings 400 helps to quickly locate and handle problems, shorten the maintenance time, and reduce the impact on urban traffic and residents' lives; the added safety protection facilities, such as guardrails and warning signs, effectively prevent accidental falling accidents and further improve the safety of the operation area.

[0081] (3) By dredging the inspection openings 400, the black and odorous bottom mud accumulated in the culverts 100 all year round can be removed, the endogenous pollution can be eliminated, the release of pollutants into the water body can be reduced, the flood control and drainage function can be effectively improved, and the water quality can be improved. At the same time, the restoration of the culverts 100 to the surface can restore the ecological function of the river, create a water ecological environment with clear water, green banks and beautiful scenery, improve the overall quality of the city, and orderly expand the urban water system space.

[0082] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for repairing a culvert (100), characterized in that: The following steps are involved: When constructing the culvert (100), an inspection structure is added, wherein the inspection structure includes an inspection well (200) and a rainwater receiving port; In view of the existing hidden culverts in the city (100), additional or expanded inspection ports (400) are added according to the current situation; A new desilting inspection port (400) was added for the entry of large equipment; Perform dark crypt (100) to restore vision.

2. The culvert (100) maintenance method according to claim 1, characterized in that: The construction of the culvert (100) includes the following steps of adding a maintenance structure: When constructing the culvert (100), a new inspection well (200) is built. The inspection well (200) is set at the intersection of pipelines, the bend, the place where the pipe diameter or slope changes, the waterfall and the straight pipe section are provided with inspection wells (200) at regular intervals. According to the layout of the rainwater inlet (500), the inspection wells (200) are added at intervals.

3. The culvert (100) maintenance method according to claim 2, characterized in that: The construction of the culvert (100) further includes the following steps of adding a maintenance structure: A rainwater pipe network is added on both sides of the culvert (100), and at a certain water collection distance, the rainwater pipe is connected to the newly built culvert (100) through the side wall opening.

4. The culvert (100) maintenance method according to claim 1, characterized in that: The method of adding or expanding the inspection opening (400) according to the existing urban culvert (100) comprises the following steps: Enlarging or blocking the inspection opening (400); Strengthen the side wall outlet; Block abnormal discharge ports; An inspection opening (400) is additionally provided according to the structure of the culvert (100).

5. The culvert (100) maintenance method according to claim 4, characterized in that: The method of expanding or blocking the inspection opening (400) comprises the following steps: For the inspection opening (400) within a certain range on the culvert (100), blocking treatment is performed; For the area where the spacing is within the certain range and the inspection opening (400) is smaller than a certain size, a hole expansion process is performed.

6. The culvert (100) maintenance method according to claim 4, characterized in that: The reinforcement of the side wall outlet comprises the following steps: The connection between the existing rainwater pipe outlet and the culvert (100) is reinforced.

7. The culvert (100) maintenance method according to claim 4, characterized in that: The blocking of abnormal outlets comprises the following steps: Based on the analysis of the existing abnormal discharge system, for the direct sewage outlet, the pollution source will be connected to the sewage network and the direct sewage outlet will be blocked.

8. The culvert (100) maintenance method according to claim 4, characterized in that: The method of adding an inspection opening (400) according to the structure of the culvert (100) comprises the following steps: For a box culvert using a prefabricated cover plate, the cover plate of the culvert (100) is partially removed according to the distribution of the structural beams of the culvert (100), and an inspection opening (400) is added at the location; For the concrete culvert (100), when adding the inspection opening (400), the hole (300) is opened, and the reinforcement is added to overlap with the existing culvert (100), and then the inspection opening (400) of the culvert (100) is added at the location, and concrete is poured.

9. The culvert (100) maintenance method according to claim 1, characterized in that: The newly added desilting inspection port (400) for large equipment to enter comprises the following steps: Rectangular holes are opened at intervals on a culvert (100) of reinforced concrete structure. When the holes (300) are opened, the culvert (100) is supported on both sides by roughening and planting steel bars, lining with reinforced concrete, and adding cross braces to ensure stability.

10. The culvert (100) maintenance method according to claim 1, characterized in that: The restoration of the dark crypt (100) comprises the following steps: The cover plate of the culvert (100) is removed, the culvert (100) is desilted, and the structural stability of the culvert (100) is checked, and unstable parts are reinforced.

Images