Maintenance device and method for tunnel
By using atomizing spray components and enclosed space devices in tunnels, the problems of energy waste and high equipment costs under steam curing methods are solved, achieving energy saving, consumption reduction, and uniform curing.
Patent Information
- Application Number
- CN202411360599.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-01-10
AI Technical Summary
Existing steam curing methods are energy-intensive, have high equipment costs, and produce uneven curing, resulting in energy waste and increased equipment investment costs.
A tunnel curing device employing atomizing spray components and a sealed curing space sprays atomized curing water onto the concrete surface through the atomizing spray components. Combined with the traveling components, side-top components, and jacking components, a sealed space is formed to control temperature and humidity for uniform curing.
It effectively reduces energy consumption and equipment costs, achieves controllable temperature and humidity curing, ensures the concrete surface remains moist, and improves the curing effect.
Smart Images
Figure CN119288545A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of concrete curing, and in particular relates to a tunnel curing device and method. Background Art
[0002] There are currently two ways to maintain concrete: steam and spray. When using the steam solution, water is heated to form water vapor (such as vaporizing water through a steam generator). At this time, the water vapor is at the temperature of saturated steam (this temperature is determined by the location of the concrete to be maintained, usually above 90°C). Then other technical means (such as reducing pressure, cooling water vapor, using mixed gases, using refrigerants, etc.) are used to reduce the temperature of the water vapor while maintaining the gas. That is, the current steam maintenance is: first heat the curing water to vaporize it, and then cool it to a suitable temperature.
[0003] When the above method is adopted, a large amount of energy is consumed first to evaporate the water vapor, and then energy is required to cool the water vapor, which will cause a large amount of unnecessary energy waste. At the same time, since more steam is required for each maintenance and it cannot be generated slowly, it is necessary to separately equip special equipment for the generation of water vapor, which leads to high investment cost of the equipment. At the same time, due to the high temperature of water vapor, it will exist above the maintenance space and cannot achieve the purpose of moistening the concrete surface, making it easy for the maintenance temperature to be uneven, too high and difficult to control. Summary of the invention
[0004] The present invention proposes a tunnel maintenance device, which can effectively reduce energy consumption and cost while ensuring the maintenance of the concrete in the tunnel.
[0005] To this end, the technical solution adopted by the present invention is: a tunnel maintenance device, including a trolley equipped with a walking assembly, a side top assembly and a jacking assembly, the trolley is provided with a closing assembly that can form a closed maintenance space with the concrete to be cured, and the trolley is provided with an atomizing spraying assembly that can spray a certain temperature into the maintenance space and wet the secondary lining concrete after being atomized; when the trolley moves into place, the side top assembly and the jacking assembly work, so that a closed maintenance space can be formed between the closing assembly and the concrete to be cured.
[0006] As a preferred embodiment of the above scheme, the closing component includes a support frame which is arranged on a trolley and has high front and rear ends and a low middle part. A steam cloth is provided on the outer cover of the support frame, and a plurality of support rods for supporting the steam cloth and distributed in a grid are provided between the support frame and the steam cloth. A curing space is formed between the steam cloth and the secondary lining concrete of the tunnel, and end sealing gaskets for ensuring the sealing of the curing space are provided on the front and rear ends and the bottom of the support frame.
[0007] Further preferably, the support frame includes two end arc frames which are arranged at a front-to-back interval and match the tunnel contour, each end arc frame includes an arch waist end arc frame on both sides and an arch top end arc frame arranged between the two arch waist end arc frames, and the arch waist end arc frame and the arch top end arc frame are arranged to be hinged, and a number of arch waist middle arc frames located on the left and right sides of the trolley are arranged at a left and right interval between the two end arc frames, the arch waist middle arc frame and the arch waist end arc frame are arranged on the trolley through a side top assembly, and the arch top end arc frame is arranged on the trolley through a support frame.
[0008] Further preferably, the end sealing gasket includes an annular end sealing gasket and a radial end sealing gasket, the bottoms of the end arc frame and the arch waist middle arc frame are spaced left and right and extended front and back to provide radial end plates for installing the end sealing gasket, and the outer side of the upper end of the end arc frame is provided with an annular end plate for setting the annular end sealing gasket.
[0009] Further preferably, there is also a water supply system for providing curing water with a certain temperature to the atomizing spray assembly, the water supply system comprises a water tank capable of storing the curing water, a purification assembly for purifying the curing water is arranged in front of the water tank, the rear of the water tank is connected to the atomizing spray assembly through a water supply pipeline, and a pressurized water pump and a heater are arranged in sequence on the water supply pipeline.
[0010] Further preferably, the atomizing spray assembly includes at least two atomizing pipelines matching the tunnel contour and located in the maintenance space, each atomizing pipeline is provided with a plurality of atomizing nozzles at intervals, all atomizing pipelines are provided on an atomizing bracket, and the atomizing bracket is movably provided on a forward and backward moving assembly; the forward and backward moving assembly includes a track provided on the top of the trolley and a driving assembly provided on the atomizing spray assembly, and the driving assembly is provided on the atomizing bracket.
[0011] Further preferably, the atomizing injection assembly includes a spraying part and an atomizing part, the spraying part includes a plurality of spray pipes arranged at intervals in the maintenance space, and each spray pipe is arranged on a spray main pipe, and a plurality of spray heads are arranged at intervals on each spray pipe; the atomizing part includes a plurality of atomizing pipes arranged at intervals in the maintenance space, and each atomizing pipe is arranged on an atomizing main pipe, an atomizing water pump is arranged on the atomizing main pipe, and a plurality of atomizing heads are arranged at intervals on each atomizing pipe, and the spray main pipe and the atomizing main pipe are connected to the water supply pipeline through a three-way valve.
[0012] Further preferably, the trolley is provided with a plurality of temperature and humidity sensors for detecting the temperature and humidity in the curing space.
[0013] Further preferably, the trolley is provided with a ventilation assembly located at the waist position, and the ventilation assembly includes a ventilation bracket arranged on the trolley and a ventilation pipe connected to the maintenance space.
[0014] At the same time, a tunnel maintenance method is also disclosed, which is based on the above maintenance device and also includes the following steps:
[0015] S1: Curing preparation, the trolley moves to the position to be cured through the walking assembly, and then the side top assembly and the jacking assembly work to form a closed curing space between the closing assembly and the concrete to be cured;
[0016] S2: Curing starts. The atomizing spray assembly works repeatedly in a certain order to spray atomized curing water with a certain temperature onto the concrete to be cured. During the curing period, the temperature in the curing space is maintained between 25-35°C and the humidity is higher than 90%. At the same time, the tunnel wall is always in a moist state.
[0017] More preferably, in S2, the temperature increase and temperature decrease rates in the curing space are no greater than 10°C / h.
[0018] Beneficial effects of the present invention:
[0019] 1) Spray atomized curing water with a certain temperature in a sealed curing space so that the entire curing effect is the same as that of steam curing. Compared with the prior art, the present application adopts an atomizing nozzle to achieve steam curing, which does not need to be heated to a very high temperature, and therefore does not need to be equipped with special equipment separately, thereby effectively reducing costs and energy consumption.
[0020] 2) In the present application, the curing water is first heated to between 25-35°C, and then the curing water is vaporized by pressurized atomization, so that the curing temperature is controllable, and atomizing nozzles are synchronously arranged on both sides to ensure the moistening of the concrete under the curing space, and the overall curing effect is good.
[0021] 3) The water supply system provided in the present application includes a water inlet assembly, so that the maintenance water can be purified before being heated and atomized, thereby effectively preventing the atomizer from being blocked, while also extending the service life and maintenance frequency of the atomizing spray assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the present invention.
[0023] Figure 2 for Figure 1 Cross-sectional view of XX.
[0024] Figure 3 for Figure 1 Cross-sectional view of YY.
[0025] Figure 4 for Figure 1 Cross-sectional view of MM.
[0026] Figure 5 for Figure 1 Cross-sectional view of NN.
[0027] Figure numerals: trolley-A, closing component-B, forward and backward moving component-C, atomizing spray component-D, maintenance space-E, steam cloth-1, end arc frame-2, arch waist middle arc frame-3, support frame-4, annular end sealing gasket-5, radial end sealing gasket-6, radial end plate-7, annular end plate-8, atomizing pipeline-9, atomizing bracket-10, track-11, driving component-12. DETAILED DESCRIPTION
[0028] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:
[0029] like Figure 1-5 As shown, a tunnel maintenance device is mainly composed of a trolley A, a closing component B and an atomizing spray component D. The trolley adopts a structure equipped with a walking component, a side top component and a jacking component in the prior art, and the jacking component is used to drive the entire trolley to move upward as a whole, and the side top component realizes the left and right expansion or inward movement of the components located on the left and right sides of the trolley, and the walking component adopts a tire type.
[0030] The trolley A is provided with a closing component B that can form a closed curing space E with the concrete to be cured, and the trolley A is provided with an atomizing spraying component D that can spray atomized curing steam with a certain temperature into the curing space E. When the trolley A moves into position, the side jacking component and the jacking component work to form a closed curing space E between the closing component B and the concrete to be cured.
[0031] The closing assembly B includes a support frame which is arranged on the trolley A and has high front and rear ends and low middle. A steam cloth 1 is arranged on the outer cover of the support frame. The curing space is the space between the steam cloth 1 and the secondary lining concrete of the tunnel. At the same time, end sealing pads are arranged at the front and rear ends and the bottom of the support frame to ensure the sealing of the curing space. In order to prevent the steam cloth from collapsing, a number of support rods (not shown in the figure) for supporting the steam cloth and distributed in a mesh are arranged between the support frame and the steam cloth 1. Preferably, the end sealing pad is made of fireproof sponge and the steam cloth is made of rainproof cloth made of polypropylene.
[0032] In order to facilitate the spraying of atomized curing water into the curing space, the support frame includes two end arc frames 2 arranged at intervals in front and back and matching the tunnel profile, and a number of arch waist middle arc frames 3 located on the left and right sides of the trolley are arranged at intervals in the left and right between the two end arc frames 2. The end seal includes an annular end seal 5 and a radial end seal 6. To facilitate the installation between the two, radial end plates 7 for installing end seals are arranged at intervals in the left and right and extending in the front and back at the bottom of the end arc frame 2 and the arch waist middle arc frame 3, and an annular end plate 8 for setting an annular end seal is arranged on the outer side of the upper end of the end arc frame 2.
[0033] In order to facilitate the normal movement of the entire trolley in the tunnel, each end arc frame 2 includes an arch waist end arc frame on both sides and an arch top end arc frame arranged between the two arch waist end arc frames, and the arch waist end arc frame and the arch top end arc frame are arranged to be hinged, and the arch waist middle arc frame 3 and the arch waist end arc frame are arranged on the trolley A through the side top assembly, and the arch top end arc frame is arranged on the trolley through the support frame 4. When the jacking assembly is working, it can drive the entire support frame upward, so that the top of the support frame contacts the concrete to be cured, and the top of the front and rear ends are sealed. When the side top assembly is working, it drives the arch waist end arc frame and the arch waist middle arc frame to spread to the left and right sides, and the left and right sides are sealed.
[0034] In order to realize the atomization spraying of the maintenance water of the atomization spraying assembly, a water supply system (not shown in the figure) is also provided for providing the atomization spraying assembly with maintenance water of a certain temperature. The water supply system includes a water tank capable of storing maintenance water, and a purification assembly for purifying the maintenance water is arranged in front of the water tank. The water tank is connected to the atomization spraying assembly through a water supply pipeline. A pressurized water pump and a heater are arranged in sequence on the water supply pipeline, and the power of the heater is not more than 60KW. Usually, the water in the tunnel is used for tunnel maintenance. Due to its poor water quality and high mud content, the purification assembly can be set to a multi-stage sedimentation structure composed of multiple purification water tanks. At the same time, a filter is also provided in the pipeline connecting the purification water tanks to further improve the purification effect.
[0035] When the distance between the steam cloth and the tunnel wall is greater than 30 cm, the atomizing spray assembly D is arranged on the trolley A through the forward and backward moving assembly C. At this time, the atomizing spray assembly D includes at least two atomizing pipelines 9 that match the tunnel contour and are located in the maintenance space, and a plurality of atomizing nozzles are arranged at intervals on each atomizing pipeline 9, and all atomizing pipelines 9 are arranged on an atomizing bracket 10, and the atomizing bracket 10 is movably arranged on the forward and backward moving assembly C. The forward and backward moving assembly C includes a track 11 arranged on the top of the trolley and a driving assembly 12 arranged on the atomizing spray assembly. Specifically, the driving assembly 12 is arranged on the atomizing bracket 10, wherein the driving assembly can use an electric motor or a hydraulic motor according to actual conditions, and a moving trolley is arranged on the track, and the atomizing bracket is arranged on the moving trolley.
[0036] When the distance between the steam cloth and the tunnel wall is less than 30cm, the atomizing spray assembly (D) includes a spraying part and an atomizing part. The spraying part includes a plurality of spray pipes arranged at intervals in the curing space, and each spray pipe is arranged on the spray main pipe. A plurality of spray heads are arranged at intervals on each spray pipe. Preferably, a spray pipe is arranged at every 0.5m. The atomizing part includes a plurality of atomizing pipes arranged at intervals in the curing space, and each atomizing pipe is arranged on the atomizing main pipe. The atomizing main pipe is provided with an atomizing water pump, and a plurality of atomizing heads are arranged at intervals on each atomizing pipe. The spray main pipe and the atomizing main pipe are connected to the water supply pipeline through a three-way valve. Preferably, the atomizing pipe and the spray pipe are arranged crosswise.
[0037] In order to facilitate cooling in the maintenance space, a ventilation assembly (not shown in the figure) is provided at the waist position on the trolley, and the ventilation assembly includes a ventilation bracket provided on the trolley and a ventilation pipe connected to the maintenance space.
[0038] Preferably, a plurality of temperature and humidity sensors for detecting the temperature and humidity in the curing space are provided on the trolley.
[0039] The device is also equipped with an electric control system, which includes a power distribution cabinet and a control system. Both the power distribution cabinet and the control system are existing technologies. The information system uses a touch screen, and the touch screen can display the data measured by each temperature and humidity sensor, and can also record and store the temperature and humidity data of the maintenance area. At the same time, it can also realize remote control or monitoring functions through a mobile phone.
[0040] Based on the above maintenance device, a tunnel maintenance method is also provided, which comprises the following steps:
[0041] Step 1: Preparation for maintenance. The trolley moves to the location to be maintained through the travel assembly, and then the side jacking assembly and the lifting assembly work to form a closed maintenance space between the closed assembly and the concrete to be maintained. In the specific operation, the lifting assembly works first, lifting the entire trolley with the closed assembly upward until the end arc frame contacts the tunnel secondary lining concrete, and then the side jacking assembly works to expand the arch waist end arc frame and the arch waist middle arc frame to the left and right sides until the radial end seal gasket contacts the tunnel secondary lining concrete.
[0042] Step 2: Start curing. The atomizing spray assembly works repeatedly in a certain order, spraying curing water with a certain temperature and atomized on the concrete to be cured. During the curing period, the temperature in the curing space is kept between 25-35℃, the humidity is higher than 90%, and the tunnel wall is always in a wet state. The heating and cooling rate in the curing space is no more than 10℃ / h.
[0043] The specific operation of the atomizing spray assembly is as follows: during the entire curing process, when the atomizing spray assembly is set on the trolley through the moving assembly, the atomizing spray head reciprocates in the curing space through the forward and backward moving assembly, and the atomizing spray head will spray only when it moves in either the forward or backward direction, so that the temperature in the curing space is maintained between 25-35°C, the humidity is higher than 90%, and the tunnel wall is always in a wet state. When the atomizing spray assembly is directly set on the trolley, when the humidity in the curing space is maintained above 90%, it works one by one in one direction through the spray pipe, and all the atomizing heads work as long as the humidity in the curing space is below 90%.
Claims
1. A device for curing secondary lining concrete of a tunnel, comprising a trolley (A) equipped with a walking assembly, a side jacking assembly and a jacking assembly, characterized in that: The trolley (A) is provided with a closing component (B) capable of forming a closed curing space (E) with the concrete to be cured, and the trolley (A) is provided with an atomizing spraying component (D) capable of spraying liquid having a certain temperature and being atomized to wet the secondary lining concrete into the curing space (E); when the trolley (A) is moved into position, the side top component and the jacking component work, so that a closed curing space (E) can be formed between the closing component (B) and the concrete to be cured.
2. The tunnel maintenance device according to claim 1, characterized in that: The sealing component (B) comprises a support frame which is arranged on the trolley (A) and has high front and rear ends and a low middle part. A steam cloth (1) is arranged on the outer cover of the support frame, and a plurality of support rods for supporting the steam cloth and distributed in a mesh are arranged between the support frame and the steam cloth (1). A curing space is formed between the steam cloth (1) and the secondary lining concrete of the tunnel. End sealing pads for ensuring the sealing of the curing space are arranged on the front and rear ends and the bottom of the support frame.
3. The tunnel maintenance device according to claim 2, characterized in that: The support frame comprises two end arc frames (2) arranged at a front-to-back interval and matching the tunnel profile, each end arc frame (2) comprises two side waist end arc frames and a top arch arc frame arranged between the two waist end arc frames, and the waist end arc frames and the top arch arc frames are arranged to be hinged, and a plurality of waist middle arc frames (3) located on the left and right sides of the trolley are arranged at intervals between the two end arc frames (2), the waist middle arc frames (3) and the waist end arc frames are arranged on the trolley (A) through side top components, and the top arch arc frames are arranged on the trolley through support frames (4).
4. The tunnel maintenance device according to claim 3, characterized in that: The end sealing gasket comprises an annular end sealing gasket (5) and a radial end sealing gasket (6); the bottoms of the end arc frame (2) and the arch waist intermediate arc frame (3) are both spaced left and right and extended forward and backward to be provided with radial end plates (7) for installing the end sealing gasket; the outer side of the upper end of the end arc frame (2) is provided with an annular end plate (8) for setting the annular end sealing gasket.
5. The tunnel maintenance device according to claim 1, characterized in that: It is also equipped with a water supply system for providing curing water with a certain temperature to the atomizing spray assembly. The water supply system includes N water tanks that can store curing water. A purification assembly for purifying curing water is arranged between the water tanks. The water tanks are connected to the atomizing spray assembly through a water supply pipeline. A pressurized water pump and a heater are arranged in sequence on the water supply pipeline.
6. The tunnel maintenance device according to claim 1 or 5, characterized in that: The atomizing spray assembly (D) is arranged on the trolley (A) through a forward and backward moving assembly (C); the atomizing spray assembly (D) comprises at least two atomizing pipelines (9) respectively arranged on both sides of an atomizing bracket (10); a plurality of atomizing nozzles are arranged at intervals on each atomizing pipeline (9); the atomizing bracket (10) matches the tunnel profile and is movably arranged on the forward and backward moving assembly (C); the forward and backward moving assembly (C) comprises a track (11) arranged on the top of the trolley and a driving assembly (12) arranged on the atomizing spray assembly; the driving assembly (12) is arranged on the atomizing bracket (10).
7. The tunnel maintenance device according to claim 5, characterized in that: The atomizing spray assembly (D) includes a spraying part and an atomizing part. The spraying part includes a plurality of spray pipes arranged at intervals in the maintenance space, and each spray pipe is arranged on a spray main pipe, and a plurality of spray heads are arranged at intervals on each spray pipe; the atomizing part includes a plurality of atomizing pipes arranged at intervals in the maintenance space, and each atomizing pipe is arranged on an atomizing main pipe, an atomizing water pump is arranged on the atomizing main pipe, and a plurality of atomizing heads are arranged at intervals on each atomizing pipe, and the spray main pipe and the atomizing main pipe are connected to a water supply pipeline through a three-way valve.
8. The tunnel maintenance device according to claim 1, characterized in that: The trolley is provided with a ventilation assembly located at the waist position, and the ventilation assembly includes a ventilation bracket arranged on the trolley and a ventilation pipe connected with the maintenance space.
9. A tunnel maintenance method, characterized in that: The maintenance device according to any one of claims 1 to 8 further comprises the following steps: S1: Curing preparation, the trolley moves to the position to be cured through the walking assembly, and then the side top assembly and the jacking assembly work to form a closed curing space between the closing assembly and the concrete to be cured; S2: Curing starts. The atomizing spray assembly works repeatedly in a certain order to spray atomized curing water with a certain temperature onto the concrete to be cured. During the curing period, the temperature in the curing space is maintained between 25-35°C and the humidity is higher than 90%. At the same time, the tunnel wall is always in a moist state.
10. The tunnel maintenance device according to claim 9, characterized in that: In S2, the heating and cooling rates in the curing space are no more than 10°C / h.