Inspection well anti-sedimentation system and construction technology thereof

Abstract

The invention discloses an inspection well anti-sedimentation system and a construction technology thereof, and relates to the technical field of inspection wells, the inspection well anti-sedimentation system comprises a well lid, a well ring, a well shaft and an anti-sedimentation assembly, the well lid, the well ring and the well lid are sequentially arranged on a well mouth of an inspection well from bottom to top, the well lid is movably clamped to the upper portion of the well ring, and the lower portion of the well ring is connected to the well shaft; an anti-sedimentation assembly is arranged between the lower surface of the well lid and the well ring, and the anti-sedimentation assembly enables the well lid to stretch out and draw back to reset in the vertical direction after the well lid is stressed. Through the anti-sedimentation assembly, the well lid retracts and resets in the vertical direction after being stressed, the buffer effect on downward transmission of vehicle loads is achieved, overall sedimentation of the inspection well is effectively reduced, and diseases of the inspection well and the surrounding road surface are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of manholes, and in particular to a manhole anti-settling system and a construction process thereof. Background Art

[0002] As a necessary facility in the design and construction of municipal roads, manholes undertake important functions such as communications, water supply and drainage, electricity, and gas transportation. The manhole cover is located above the manhole and is in direct contact with the road surface. The manhole chamber is connected to the pipeline and is surrounded by backfill soil. The entire manhole structure is connected to the road surface structure to form a tight whole.

[0003] In recent years, municipal manholes and surrounding road surface diseases have become increasingly common and have become an important disease of urban roads. Since most municipal manholes are built on the roadway, the manhole covers are on the surface of the road surface and are in direct contact with the external environment. During service, they are continuously subjected to vertical compressive stress caused by vehicle and pedestrian loads. The vertical compressive stress is transmitted to the base of the manhole cover through the manhole cover, resulting in a large pressure difference between the road surface and the manhole cover, which makes the manhole cover ring very prone to damage such as manhole tilting, settlement, bulging, and manhole cover rupture. The surface layer around the manhole cover is prone to cracks, potholes, looseness and other diseases. When the manhole cover sinks, tilts, and breaks, and the surrounding road surface is broken and potholes occur, it not only seriously affects the functions of various pipeline transportation in the manhole, but also produces a large bumpy feeling when vehicles pass by, seriously reducing the service life of the road and driving comfort. Therefore, the municipal construction department needs to invest a lot of financial and material resources every year to repair and maintain the manholes and surrounding roads.

[0004] At present, the settlement repair of manhole covers requires the asphalt mixture around the manhole cover to be milled and excavated, and the position of the manhole cover that needs to be adjusted is re-paved with asphalt surface. This maintenance method is complicated and after construction, due to the difference in bearing capacity between the manhole cover and the road surface, it is easy for the manhole cover to settle unevenly under the load, resulting in a longitudinal height difference at the joint. Therefore, the existing manhole covers need to be further improved. Summary of the invention

[0005] The purpose of the present invention is to provide a manhole anti-settling system and a construction process thereof, so as to solve the problems existing in the above-mentioned prior art, so that the manhole cover can play a buffering role on the vehicle load and delay the settlement of the manhole structure.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a manhole anti-subsidence system, comprising a manhole cover, a manhole ring, a wellbore and an anti-subsidence component. The wellbore, the manhole ring and the manhole cover are sequentially arranged on the manhole mouth from bottom to top, the manhole cover is movably clamped on the top of the well ring and is connected to the wellbore at the bottom, the anti-subsidence component is arranged between the lower surface of the manhole cover and the well ring, and the anti-subsidence component can make the manhole cover telescope and reset in the vertical direction after being subjected to pressure.

[0008] Preferably, a bolt cap with a bottom plate is cast in the wellbore, and the well ring is provided with a plurality of bolt countersunk holes evenly distributed along the circumference, and the bolt countersunk holes are connected to the bolt cap through bolts, so that the well ring is fixedly connected to the wellbore.

[0009] Preferably, the anti-sinking assembly comprises a hydraulic telescopic rod, and a plurality of the hydraulic telescopic rods are evenly inserted into the well ring along the circumference, and the upper end surfaces of the top rods of all the hydraulic telescopic rods are flush and in conflict with the lower surface of the well cover.

[0010] Preferably, the anti-settling component also includes a hydraulic reset mechanism, which includes a piston cylinder, a piston and a spring. The piston is provided with a sliding seal in the piston cylinder, a plurality of springs are provided between the piston and the top of the piston cylinder, a hydraulic cavity is provided between the piston and the bottom of the piston cylinder, and the plug cavity of the hydraulic telescopic rod is connected to the hydraulic cavity through an oil pipe.

[0011] Preferably, a limit valve is provided on the oil pipe, and the limit valve includes a valve cavity and a valve core. The valve core is sealingly and slidably arranged in the valve cavity. The valve core divides the valve cavity into two oil chambers, and the two oil chambers are respectively connected to the hydraulic cavity and the plug cavity of the hydraulic telescopic rod.

[0012] Preferably, an oil filling pipe is provided on the oil pipe, the oil filling pipe is arranged vertically upward, the upper end of the oil filling pipe is at least flush with the middle of the plug cavity of the hydraulic telescopic rod, and a valve is connected to the oil filling pipe through a thread.

[0013] Preferably, the hydraulic reset mechanism is arranged below the pavement base layer.

[0014] Preferably, both ends of the oil pipe are connected to the hydraulic chamber and the plug chamber of the hydraulic telescopic rod through threaded connectors respectively.

[0015] The present invention also relates to a construction method of a manhole anti-settling system, based on the above-mentioned manhole anti-settling system, specifically comprising the following steps:

[0016] S1, prefabricate the manhole cover, manhole ring, anti-settling assembly and retaining sleeve, dig the manhole pit, cast or build the manhole, pre-install the bolt cap in the manhole, fix the manhole ring to the top surface of the manhole by bolts, prefabricate the hydraulic reset mechanism of the anti-settling assembly below the road surface, and connect the hydraulic cavity of the hydraulic reset mechanism to a section of connecting oil pipe;

[0017] S2, backfilling and compacting the manhole pit, applying bonding material on the upper part of the backfill area, and connecting the oil pipe with a limit valve to the plug cavity of the hydraulic telescopic rod of the anti-settling component;

[0018] S3, adding hydraulic oil through the oil filling pipe on the oil pipe, adjusting the top rod of each hydraulic telescopic rod to a preset position, sealing the oil filling pipe, and checking the sealing of each hydraulic component;

[0019] S4, paving the road, placing the manhole cover on the top rod of the hydraulic telescopic rod.

[0020] Preferably, if the hydraulic component fails or the manhole sinks, it is necessary to replace the hydraulic oil in the anti-settling assembly or raise the manhole ring to keep the manhole cover flush with the road surface.

[0021] Compared with the prior art, the present invention has achieved the following technical effects:

[0022] The present invention uses an anti-settling component to enable the manhole cover to retract and reset in the vertical direction after being subjected to pressure, which has a buffering effect on the downward transmission of vehicle loads, effectively reduces the overall settlement of the manhole, and reduces the damage to the manhole and the road surface around it. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 Schematic diagram of the structure of the manhole anti-settling system in an embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a hydraulic reset mechanism in an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of a well circle in an embodiment of the present invention;

[0027] Figure 4 It is a structural schematic diagram of a limit valve in an embodiment of the present invention;

[0028] Figure 5 Schematic diagram of matching between a bolt cap and a bolt in an embodiment of the present invention;

[0029] Figure 6 It is a structural schematic diagram of a threaded connector in an embodiment of the present invention;

[0030] In the figure: 1-well ring, 2-wellbore, 3-hydraulic telescopic rod, 4-bolt cap, 5-bolt, 6-oil pipe, 7-threaded connector, 8-valve chamber, 9-valve core, 10-oil filling pipe, 11-valve, 12-piston cylinder, 13-piston, 14-spring, 15-well cover, 16-sealing ring, 17-pavement base. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The purpose of the present invention is to provide a manhole anti-settling system and a construction process thereof, so as to solve the problems existing in the prior art, so that the manhole cover can buffer the traffic load and delay the settlement of the manhole structure.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Embodiment 1

[0035] like Figures 1 to 6 As shown, in the present embodiment, a manhole anti-subsidence system is provided, including a manhole cover 15, a manhole ring 1, a shaft 2 and an anti-subsidence component. The shaft 2, the manhole ring 1 and the manhole cover 15 are sequentially arranged on the manhole mouth from bottom to top. The manhole cover 15 is movably connected to the top of the shaft ring 1 and is connected to the shaft 2 at the bottom. An anti-subsidence component is arranged between the lower surface of the manhole cover 15 and the manhole ring 1. The anti-subsidence component can make the manhole cover 15 extend and retract in the vertical direction and reset after being subjected to pressure.

[0036] As an optional solution, in this embodiment, a bolt cap 4 with a bottom plate is cast in the wellbore 2, and a plurality of bolt countersunk holes are evenly distributed along the circumference of the well ring 1 to ensure that there are no protrusions on the upper surface of the well ring 1. The bolt countersunk holes are connected to the bolt cap 4 through bolts 5, so that the well ring 1 and the wellbore 2 are fixedly connected, ensuring that the connection relationship of the structure is stable and reliable.

[0037] As an optional solution, the anti-sinking assembly in this embodiment includes a hydraulic telescopic rod 3, and a plurality of hydraulic telescopic rods 3 are evenly inserted into the well ring 1 along the circumference, and the upper end surfaces of the top rods of all hydraulic telescopic rods 3 are flush and in contact with the lower surface of the well cover 15, ensuring that the upper surface of the well cover 15 is flush with the road surface. The cylinder of the hydraulic telescopic rod 3 and the well ring 1 can also be made into an integrated structure.

[0038] As an optional solution, the anti-sinking assembly in this embodiment also includes a hydraulic reset mechanism, which includes a piston cylinder 12, a piston 13 and a spring 14. The piston cylinder 12 is provided with a piston 13 in a sliding seal, and a plurality of springs 14 are provided between the piston 13 and the top of the piston cylinder 12. A hydraulic chamber is provided between the piston 13 and the bottom of the piston cylinder 12, and the plug chamber of the hydraulic telescopic rod 3 is connected to the hydraulic chamber through the oil pipe 6. In this embodiment, the spring 14 is preferably a spring with a larger stiffness coefficient. The overall load-resisting deformation capacity of the spring 14 can be selected according to the load conditions corresponding to the road design grade, and the appropriate stiffness modulus and quantity are selected. The spring 14 is located in the piston cylinder 12. When the vertical pressure exceeds the maximum value that the road base can withstand, the piston cylinder 12 will produce vertical deformation. At this time, the internal spring 14 can generate an upward reaction force to reduce the deformation of the piston cylinder 12 and the road base. When the piston cylinder 12 is subjected to pressure and produces longitudinal displacement, the spring 14 has a certain buffering effect on the settlement of the road surface, and can also have a certain offsetting effect on the pressure brought by the piston 13; preferably, a sealing ring 16 is provided on the piston 13 to prevent the hydraulic oil from leaking out.

[0039] As an optional solution, in this embodiment, a limit valve is provided on the oil pipe 6, and the limit valve includes a valve chamber and a valve core. The valve core is sealingly and slidably arranged in the valve chamber. The valve core divides the valve chamber into two oil chambers, and the two oil chambers are respectively connected to the hydraulic chamber and the plug chamber of the hydraulic telescopic rod 3. A sealing ring 16 is provided on the valve core to prevent oil leakage when the two oil chambers are connected. In this embodiment, the valve core of the limit valve can move to both sides. When the manhole cover 15 is subjected to pressure, the valve core moves to the lower side of the valve cavity, thereby pushing the piston 13 of the piston cylinder 12 upward, further compressing the spring 14; when the pressure on the manhole cover 15 increases, the valve core moves to the lowest side of the valve cavity and limits the movement, thereby increasing the hydraulic pressure of the plug cavity of the hydraulic telescopic rod 3 to cope with greater pressure feedback; when the pressure on the manhole cover 15 decreases, the reset force of the spring 14 causes the piston 13 of the piston cylinder 12 to move downward, pushing the valve core to move to the upper side of the valve cavity, thereby increasing the hydraulic pressure of the plug cavity of the hydraulic telescopic rod 3, and the push rod moves upward and resets to return the manhole cover 15 to its original position, keeping it flush with the road surface; this reciprocating process achieves a buffering effect on the manhole cover 15, effectively reducing the overall settlement of the manhole and reducing damage to the manhole and its surrounding roads.

[0040] As an optional solution, in this embodiment, an oil filling pipe 10 is provided on the oil pipe 6. The oil filling pipe 10 is arranged vertically upward, and the upper end of the oil filling pipe 10 is at least flush with the middle of the plug cavity of the hydraulic telescopic rod 3. A valve 11 is threadedly connected to the oil filling pipe 10 to facilitate the filling of hydraulic oil with a certain pressure.

[0041] As an optional solution, in this embodiment, the hydraulic reset mechanism is arranged below the road base layer 17. When the piston cylinder 12 is subjected to pressure and produces a longitudinal displacement, the spring 14 has a certain buffering effect on the settlement of the road surface.

[0042] As an optional solution, in this embodiment, both ends of the oil pipe 6 are connected to the hydraulic cavity and the plug cavity of the hydraulic telescopic rod 3 through threaded connectors. The threaded connector here can be similar to a shower pipe connector, one end of the threaded connector is sealed and clamped with the oil pipe 6, and the other end is connected to the opposite oil pipe 6 through threads. Preferably, a sealing ring 16 is provided in the threaded connector to prevent hydraulic oil from leaking out.

[0043] Embodiment 2

[0044] like Figure 1 As shown, this embodiment provides a construction method of a manhole anti-settling system, based on the manhole anti-settling system of the above embodiment 1, specifically comprising the following steps:

[0045] S1, prefabricate the manhole cover 15, the manhole ring 1, the anti-subsidence assembly and the retaining sleeve, dig the manhole pit, cast or build the shaft 2, preset the bolt cap 4 in the shaft 2, fix the manhole ring 1 to the top surface of the shaft 2 by bolts 5, prefabricate the hydraulic reset mechanism of the anti-subsidence assembly below the pavement base 17, and connect the hydraulic cavity of the hydraulic reset mechanism to a section of connecting oil pipe; the retaining sleeve is surrounded by the manhole cover before the pavement construction to prevent soil blocks from falling into the manhole.

[0046] S2, backfill and compact the manhole pit, apply adhesive material on the upper part of the backfill area, and connect the oil pipe 6 with a limit valve to the plug cavity of the hydraulic telescopic rod 3 of the anti-settling component;

[0047] S3, add hydraulic oil through the oil filling pipe 10 on the oil pipe 6, adjust the top rod of each hydraulic telescopic rod 3 to a preset position, seal the oil filling pipe 10, and check the sealing of each hydraulic component;

[0048] S4, paving the road, placing the manhole cover 15 on the top rod of the hydraulic telescopic rod 3.

[0049] As an optional solution, in this embodiment, if the hydraulic component fails or the manhole sinks, it is necessary to replace the hydraulic oil in the anti-settling component or raise the manhole ring 1 to keep the manhole cover 15 flush with the road surface.

[0050] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A manhole anti-settling system, characterized by: It includes a manhole cover, a manhole ring, a wellbore and an anti-settling component. The wellbore, the manhole ring and the manhole cover are arranged in sequence from bottom to top on the wellhead of the manhole. The manhole cover is movably clamped on the top of the well ring and is connected to the wellbore at the bottom. The anti-settling component is arranged between the lower surface of the manhole cover and the well ring. The anti-settling component can make the manhole cover extend and retract in the vertical direction and reset after being subjected to pressure.

2. The manhole anti-settling system according to claim 1, characterized in that: A bolt cap with a bottom plate is cast in the wellbore, and a plurality of bolt countersunk holes are evenly distributed along the circumference of the well ring. The bolt countersunk holes are connected to the bolt cap through bolts, so that the well ring is fixedly connected to the wellbore.

3. The manhole anti-settling system according to claim 1, characterized in that: The anti-sinking assembly comprises a hydraulic telescopic rod, and a plurality of the hydraulic telescopic rods are evenly inserted into the well ring along the circumferential direction, and the upper end surfaces of the top rods of all the hydraulic telescopic rods are flush and in conflict with the lower surface of the well cover.

4. The manhole anti-settling system according to claim 3 is characterized in that: The anti-settling component also includes a hydraulic reset mechanism, which includes a piston cylinder, a piston and a spring. The piston is provided with a sliding seal in the piston cylinder, a plurality of springs are provided between the piston and the top of the piston cylinder, a hydraulic cavity is provided between the piston and the bottom of the piston cylinder, and the plug cavity of the hydraulic telescopic rod is connected to the hydraulic cavity through an oil pipe.

5. The manhole anti-settling system according to claim 4, characterized in that: A limit valve is arranged on the oil pipe, and the limit valve includes a valve cavity and a valve core. The valve core is sealingly and slidably arranged in the valve cavity. The valve core divides the valve cavity into two oil chambers, and the two oil chambers are respectively connected to the hydraulic cavity and the plug cavity of the hydraulic telescopic rod.

6. The manhole anti-settling system according to claim 4, characterized in that: An oil filling pipe is arranged on the oil pipe, and the oil filling pipe is arranged vertically upward. The upper end of the oil filling pipe is at least flush with the middle of the plug cavity of the hydraulic telescopic rod. A valve is connected to the oil filling pipe through a thread.

7. The manhole anti-settling system according to claim 4, characterized in that: The hydraulic reset mechanism is arranged below the road surface base.

8. The manhole anti-settling system according to claim 4, characterized in that: The two ends of the oil pipe are communicated with the hydraulic cavity and the plug cavity of the hydraulic telescopic rod through threaded connectors respectively.

9. A construction method for a manhole anti-settling system, based on the manhole anti-settling system according to any one of claims 1 to 8, characterized in that: The specific steps include: S1, prefabricate the manhole cover, manhole ring, anti-settling assembly and retaining sleeve, dig the manhole pit, cast or build the manhole, pre-install the bolt cap in the manhole, fix the manhole ring to the top surface of the manhole by bolts, prefabricate the hydraulic reset mechanism of the anti-settling assembly below the road surface, and connect the hydraulic cavity of the hydraulic reset mechanism to a section of connecting oil pipe; S2, backfilling and compacting the manhole pit, applying bonding material on the upper part of the backfill area, and connecting the oil pipe with a limit valve to the plug cavity of the hydraulic telescopic rod of the anti-settling component; S3, adding hydraulic oil through the oil filling pipe on the oil pipe, adjusting the top rod of each hydraulic telescopic rod to a preset position, sealing the oil filling pipe, and checking the sealing of each hydraulic component; S4, paving the road, placing the manhole cover on the top rod of the hydraulic telescopic rod.

10. The construction method of the manhole anti-settling system according to claim 9, characterized in that: If the hydraulic components fail or the manhole sinks, it is necessary to replace the hydraulic oil in the anti-settling component or raise the manhole ring to keep the manhole cover flush with the road surface.

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