CN113389594B - Crystallization pipeline device is prevented in tunnel based on thing networking - Google Patents
Crystallization pipeline device is prevented in tunnel based on thing networking Download PDFInfo
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- CN113389594B CN113389594B CN202110833129.0A CN202110833129A CN113389594B CN 113389594 B CN113389594 B CN 113389594B CN 202110833129 A CN202110833129 A CN 202110833129A CN 113389594 B CN113389594 B CN 113389594B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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Abstract
The invention relates to the technical field of tunnel anti-crystallization pipelines, and discloses a tunnel anti-crystallization pipeline device based on the Internet of things, which comprises a pavement main body, wherein a tunnel anti-crystallization mechanism and a pipeline anti-water inlet mechanism are arranged in the pavement main body; the tunnel anti-crystallization mechanism comprises a transverse drainage pipe, a drainage channel, a protective outer pipe, a vertical connecting plate, an ultrasonic generator, a circuit, an ultrasonic transducer, a square hole and a raindrop sensor; the inside middle of road surface main part has seted up the drainage canal, both ends equidistance is run through and has had a plurality of horizontal drainage pipes about the inside road surface main part. According to the invention, the raindrop sensor and the ultrasonic transducers are arranged on the transverse connecting plate, so that the water leakage condition of the plurality of transverse drainage pipes can be detected simultaneously by using one raindrop sensor, and after crystals appear in the transverse drainage pipes, the crystals in the plurality of transverse drainage pipes can be crushed simultaneously by using the conduction of the plurality of ultrasonic transducers, thereby avoiding the internal blockage of the transverse drainage pipes.
Description
Technical Field
The invention relates to the technical field of tunnel anti-crystallization pipelines, in particular to a tunnel anti-crystallization pipeline device based on the Internet of things.
Background
Along with the development of economic society, the scale of tunnel construction in China is rapidly increased. In the operation process of the tunnel, various diseases can occur in the tunnel, and water leakage is one of the main types of the diseases in the tunnel. The tunnel seeps water, not only can influence the outward appearance in tunnel, still can threaten the operation safety in tunnel greatly. In the use process of the tunnel drainage system, calcium ions, magnesium ions and the like in tunnel concrete and surrounding rocks are dissolved in water and then react with carbon dioxide in the air to form crystal precipitates, and after long-term accumulation, a transverse drainage pipeline is blocked, so that tunnel water leakage is caused.
Patent No. CN202020974991.4 discloses a tunnel crystallization-preventing drainage structure with replaceable inner tube. The tunnel anti-crystallization drainage structure with the replaceable inner pipe comprises a longitudinal drainage pipe, a transverse drainage outer pipe, a transverse drainage inner pipe, a bolt and nut connecting piece, a rubber gasket and a reducing water pipe joint; one end of the transverse drainage outer pipe is connected with the longitudinal drainage pipe, and the other end of the transverse drainage outer pipe extends into the central drainage ditch; the transverse drainage inner pipe is arranged in the transverse drainage outer pipe, one end of the transverse drainage inner pipe is connected with the small end of the reducing water pipe joint, and the other end of the transverse drainage inner pipe extends to the joint of the longitudinal drainage pipe and the transverse drainage outer pipe; the reducing water pipe joint is perforated at the large head end and aligned with the reserved hole of the transverse drainage outer pipe, and is connected through a bolt and nut connecting piece; a rubber gasket is required to be arranged between the big end of the reducing water pipe joint and the transverse drainage outer pipe for water prevention. The utility model discloses an inner tube that crystallization was blockked up can in time be changed to interior outer tubular construction, simple structure, construction simple to operate, and selected pipe fitting and the material commonly used of engineering, simple economy is fit for popularizing and applying.
However, in the use process of the existing tunnel anti-crystallization drain pipe, the horizontal drain pipe cannot be automatically switched between the drainage and the sealing structure according to the situation, the sealing effect of the horizontal drain pipe is improved, and after crystallization blockage occurs in the pipe, active crystallization treatment cannot be performed, and the formation of crystallization in the horizontal drain pipe cannot be effectively reduced in daily use.
Disclosure of Invention
The invention aims to provide a tunnel anti-crystallization pipeline device based on the Internet of things, and solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a tunnel anti-crystallization pipeline device based on the Internet of things comprises a pavement main body, wherein a tunnel anti-crystallization mechanism and a pipeline anti-water inlet mechanism are arranged in the pavement main body;
the tunnel anti-crystallization mechanism comprises a transverse drainage pipe, a drainage channel, a protective outer pipe, a vertical connecting plate, an ultrasonic generator, a circuit, an ultrasonic transducer, a square hole and a raindrop sensor; a drainage channel is formed in the middle inside the pavement main body, a plurality of transverse drainage pipes penetrate through the left end and the right end of the interior of the pavement main body at equal intervals, one ends of the transverse drainage pipes are communicated with the drainage channel, protective outer pipes penetrate through the outer sides of the transverse drainage pipes and are fixed, vertical connecting plates penetrate through the outer sides of the protective outer pipes, square holes are formed in the bottom end of the interior of each vertical connecting plate, raindrop sensors are connected to the bottom end of each square hole through bolts, a plurality of ultrasonic transducers are fixedly connected to the bottoms of the vertical connecting plates at equal intervals, ultrasonic generators are connected to the bottoms of the drainage channels through bolts, one ends of circuits are connected to the left side and the right side of each ultrasonic generator, and the other ends of the circuits are connected with the ultrasonic transducers;
the pipeline water inlet prevention mechanism comprises a protective cover plate, an electric telescopic cylinder, a high-temperature-resistant rubber column, a circular groove, an electric heating pipe, a motor shaft and a blowing fan blade; a high-temperature-resistant rubber column is inserted into one end inside the transverse drainage pipe, one end, far away from the transverse drainage pipe, of the high-temperature-resistant rubber column is fixedly connected with a protective cover plate, one end of an electric telescopic cylinder is connected to the middle of the left side and the right side of the pavement main body through bolts, and the other end of the electric telescopic cylinder is fixedly connected with the protective cover plate;
the high temperature resistant rubber column is close to the one end of horizontal drainage pipe and has been seted up the circular slot, the equal fixedly connected with electrothermal tube in both ends around the circular slot is inside, the other end fixedly connected with motor of electrothermal tube, the one end rotation that the motor is close to the drainage canal is connected with the motor shaft, motor shaft outside fixedly connected with blowing fan leaf.
According to a preferred embodiment of the invention, a tunnel is poured on the top of the pavement main body, and an industrial computer is connected to the middle of the right side of the tunnel through a bolt.
As a preferred embodiment of the present invention, the signal output end of the industrial personal computer is connected with the signal input ends of the electric telescopic cylinder, the motor and the ultrasonic generator.
In a preferred embodiment of the present invention, a cavity is formed in the horizontal drainage pipe, and the phase change heat storage ceramic is fixedly connected to the cavity.
In a preferred embodiment of the present invention, a signal output terminal of the raindrop sensor is connected to a signal input terminal of an industrial computer.
As a preferred embodiment of the present invention, the industrial personal computer is connected to an external internet of things network.
In a preferred embodiment of the present invention, the high temperature resistant rubber column is fitted to a pipe hole of the horizontal drainage pipe.
As a preferred embodiment of the present invention, the protective outer tube and the vertical connecting plate are made of stainless metal.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the raindrop sensor and the ultrasonic transducers are arranged on the transverse connecting plate, so that the water leakage condition of the plurality of transverse drainage pipes can be detected simultaneously by using one raindrop sensor, and after crystals appear in the transverse drainage pipes, the crystals in the plurality of transverse drainage pipes can be crushed simultaneously by using the conduction of the plurality of ultrasonic transducers, thereby avoiding the internal blockage of the transverse drainage pipes.
2. According to the invention, the protective cover plate is arranged on the transverse drainage pipe, so that the high-temperature resistant rubber column on the protective cover plate can be inserted into the transverse drainage pipe, a plurality of transverse drainage pipes are simultaneously prevented from being water, the protective cover plate can be opened by using the electric telescopic cylinder through the electric telescopic cylinder, drainage of the plurality of transverse drainage pipes is simultaneously carried out, after the transverse drainage pipes are inserted, the insides of the drainage pipes can be directly dried by using the electric heating pipe and the blowing fan blade through the motor inside the high-temperature resistant rubber column, and the phenomenon that accumulated water in the transverse drainage pipes reacts to form crystals is avoided.
3. According to the invention, because the industrial personal computer is connected with the external Internet of things, the current weather can be known through the Internet of things, when the weather is fine, the protective cover plate is automatically closed, and when the weather is rainy, the protective cover plate is automatically opened for draining water, so that the automation of the device is improved by utilizing the Internet of things.
4. The phase-change heat storage ceramic is arranged in the transverse drainage pipe, so that the phase-change heat storage ceramic can be used for absorbing external heat and releasing the heat at night, the interior of the transverse drainage pipe is in a constant-temperature state, and the phenomenon that the temperature in the transverse drainage pipe is too low or too high and crystallization is easily formed is avoided.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic overall structure diagram of a tunnel anti-crystallization pipeline device based on the internet of things;
FIG. 2 is a schematic diagram of the internal structure of a pavement main body of the tunnel crystallization-preventing pipeline device based on the Internet of things;
FIG. 3 is a schematic structural view of a vertical connecting plate of the tunnel crystallization-preventing pipeline device based on the Internet of things;
FIG. 4 is a schematic structural view of a transverse drainage pipe of the tunnel crystallization-preventing pipeline device based on the Internet of things;
fig. 5 is a schematic view of the internal structure of a high-temperature-resistant rubber column of the tunnel crystallization-preventing pipeline device based on the internet of things.
In the figure: 1. a pavement body; 2. a tunnel; 3. a horizontal drainage pipe; 4. an electric telescopic cylinder; 5. a protective cover plate; 6. an industrial control computer; 7. a blower blade; 8. a drainage channel; 9. an ultrasonic generator; 10. a protective outer tube; 11. a vertical connecting plate; 12. an ultrasonic transducer; 13. a line; 14. a square hole; 15. a raindrop sensor; 16. a cavity; 17. a phase change heat storage ceramic; 18. a high temperature resistant rubber column; 19. a circular groove; 20. an electric heating tube; 21. a motor; 22. a motor shaft.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-5, the present invention provides a technical solution: a tunnel anti-crystallization pipeline device based on the Internet of things comprises a pavement main body 1, wherein a tunnel anti-crystallization mechanism and a pipeline anti-water inlet mechanism are arranged inside the pavement main body 1;
the tunnel anti-crystallization mechanism comprises a transverse drainage pipe 3, a drainage channel 8, a protective outer pipe 10, a vertical connecting plate 11, an ultrasonic generator 9, a circuit 13, an ultrasonic transducer 12, a square hole 14 and a raindrop sensor 15; a drainage channel 8 is formed in the middle inside the pavement main body 1, a plurality of transverse drainage pipes 3 penetrate through the left end and the right end of the inside of the pavement main body 1 at equal intervals, one ends of the transverse drainage pipes 3 are communicated with the drainage channel 8, protective outer pipes 10 penetrate through the outer sides of the transverse drainage pipes 3, vertical connecting plates 11 penetrate through the outer sides of the protective outer pipes 10, square holes 14 are formed in the bottom ends of the inner parts of the vertical connecting plates 11, rain drop sensors 15 are connected to the bottom ends of the inner parts of the square holes 14 through bolts, a plurality of ultrasonic transducers 12 are fixedly connected to the bottoms of the vertical connecting plates 11 at equal intervals, ultrasonic generators 9 are connected to the bottoms of the drainage channels 8 through bolts, one ends of circuits 13 are connected to the left side and the right side of each ultrasonic generator 9, and ultrasonic transducers 12 are connected to the other ends of the circuits 13;
the pipeline water-inlet-preventing mechanism comprises a protective cover plate 5, an electric telescopic cylinder 4, a high-temperature-resistant rubber column 18, a circular groove 19, an electric heating pipe 20, a motor 21, a motor shaft 22 and a blowing fan blade 7; a high-temperature-resistant rubber column 18 is inserted into one end inside the transverse drainage pipe 3, one end, far away from the transverse drainage pipe 3, of the high-temperature-resistant rubber column 18 is fixedly connected with a protective cover plate 5, one end of an electric telescopic cylinder 4 is connected to the middle portions of the left side and the right side of the pavement main body 1 through bolts, and the other end of the electric telescopic cylinder 4 is fixedly connected with the protective cover plate 5;
the high-temperature resistant rubber column 18 is close to one end of the horizontal drainage pipe 3 and is provided with a circular groove 19, the front end and the rear end inside the circular groove 19 are fixedly connected with an electric heating pipe 20, the other end of the electric heating pipe 20 is fixedly connected with a motor 21, one end of the motor 21 close to the drainage channel 8 is rotatably connected with a motor shaft 22, and the outer side of the motor shaft 22 is fixedly connected with a blowing fan blade 7.
It should be noted that, the electric telescopic cylinder 4, the industrial personal computer 6, the ultrasonic generator 9, the raindrop sensor 15, the electric heating tube 20 and the motor 21 are electrically connected with the external power supply, then the electric telescopic cylinder 4, the industrial personal computer 6, the ultrasonic generator 9, the raindrop sensor 15, the electric heating tube 20 and the motor 21 are in signal connection with the external control switch, after the connection is completed, when crystals appear inside the horizontal drainage pipe 3, the ultrasonic generator 9 can be opened, the ultrasonic transducers 12 are conducted to the horizontal drainage pipe 3 through the vertical connecting plate 11, the crystals inside the horizontal drainage pipe 3 are crushed, meanwhile, the raindrop sensor 15 is arranged inside the vertical connecting plate 11, after the horizontal drainage pipe 3 leaks water, the raindrop sensor 15 can detect and send signals to the industrial personal computer 6, the industrial personal computer 6 can inform the staff through the internet of things, and after the high temperature resistant rubber column 18 and the waterproof cover plate on the high temperature resistant rubber column 18 are inserted into the horizontal drainage pipe 3 5, can avoid water to enter into the drain pipe, after opening electronic telescoping cylinder 4, can utilize electronic telescoping cylinder 4 to promote waterproof apron 5, make horizontal drain pipe 3 carry out normal drainage work.
In the embodiment, referring to fig. 1, a tunnel 2 is poured on the top of the pavement main body 1, and an industrial computer 6 is bolted to the middle of the right side of the tunnel 2.
It should be noted that, because the industrial personal computer 6 is connected with the external internet of things, the current weather can be known through the internet of things, when the weather is fine, the electric telescopic cylinder 4 is controlled through the industrial personal computer 6, the protective cover plate 5 is automatically closed, when the weather is rainy, the electric telescopic cylinder 4 is automatically opened, the protective cover plate 5 is opened to drain water, and the automation of the device is improved through the internet of things.
In this embodiment, referring to fig. 1, a signal output end of the industrial computer 6 is connected to signal input ends of the electric telescopic cylinder 4, the motor 21 and the ultrasonic generator 9.
Referring to fig. 1 in this embodiment, a cavity 16 is formed inside the horizontal drainage pipe 3, and a phase change heat storage ceramic 17 is fixedly connected inside the cavity 16.
It should be noted that, because the phase change heat storage ceramic 17 is arranged inside the horizontal drainage pipe 3, the phase change heat storage ceramic 17 can be used for absorbing external heat, and the heat is released at night, so that the inside of the horizontal drainage pipe 3 is in a constant temperature state, and the phenomenon that the temperature inside the horizontal drainage pipe 3 is too low or too high and is easy to form crystals is avoided.
In this embodiment, referring to fig. 1, a signal output end of the raindrop sensor 15 is connected to a signal input end of the industrial computer 6.
In this embodiment, referring to fig. 1, the industrial personal computer 6 is connected to an external internet of things network.
In this embodiment, referring to fig. 1, the high temperature resistant rubber column 18 is fitted to the pipe hole of the horizontal drainage pipe 3.
In the embodiment, referring to fig. 1, the protective outer tube 10 and the vertical connecting plate 11 are made of stainless metal.
When the tunnel anti-crystallization pipeline device based on the internet of things is used, it needs to be explained that the invention relates to a tunnel anti-crystallization pipeline device based on the internet of things, which comprises a road surface main body 1; 2. a tunnel; 3. a horizontal drainage pipe; 4. an electric telescopic cylinder; 5. a protective cover plate; 6. an industrial control computer; 7. a blower blade; 8. a drainage channel; 9. an ultrasonic generator; 10. a protective outer tube; 11. a vertical connecting plate; 12. an ultrasonic transducer; 13. a line; 14. a square hole; 15. a raindrop sensor; 16. a cavity; 17. a phase change heat storage ceramic; 18. a high temperature resistant rubber column; 19. a circular groove; 20. an electric heating tube; 21. a motor; 22. the motor shaft, components are all standard or known to those skilled in the art, and their structure and principle are known to those skilled in the art through technical manuals or through routine experimentation.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a crystallization pipeline device is prevented in tunnel based on thing networking, includes road surface main part (1), its characterized in that: a tunnel anti-crystallization mechanism and a pipeline anti-water-inlet mechanism are arranged in the pavement main body (1);
the tunnel anti-crystallization mechanism comprises a transverse drainage pipe (3), a drainage channel (8), a protective outer pipe (10), a vertical connecting plate (11), an ultrasonic generator (9), a circuit (13), an ultrasonic transducer (12), a square hole (14) and a raindrop sensor (15); a drainage channel (8) is arranged in the middle of the interior of the pavement main body (1), a plurality of transverse drainage pipes (3) penetrate through the left end and the right end of the interior of the pavement main body (1) at equal intervals, one end of the horizontal drainage pipe (3) is communicated with a drainage channel (8), a protective outer pipe (10) penetrates through and is fixed on the outer side of the horizontal drainage pipe (3), and the outer sides of the plurality of protective outer tubes (10) are all penetrated with vertical connecting plates (11), the bottom ends inside the vertical connecting plates (11) are provided with square holes (14), the bottom end inside the square hole (14) is connected with a raindrop sensor (15) through a bolt, a plurality of ultrasonic transducers (12) are fixedly connected to the bottom of the vertical connecting plate (11) at equal intervals, the bottom of the drainage channel (8) is connected with an ultrasonic generator (9) by a bolt, the left side and the right side of the ultrasonic generator (9) are both connected with one end of a circuit (13), the other end of the circuit (13) is connected with an ultrasonic transducer (12);
the pipeline water-inlet-preventing mechanism comprises a protective cover plate (5), an electric telescopic cylinder (4), a high-temperature-resistant rubber column (18), a circular groove (19), an electric heating pipe (20), a motor (21), a motor shaft (22) and a blowing fan blade (7); a high-temperature-resistant rubber column (18) is inserted into one end of the interior of the transverse drainage pipe (3), one end, far away from the transverse drainage pipe (3), of the high-temperature-resistant rubber column (18) is fixedly connected with a protective cover plate (5), one end of an electric telescopic cylinder (4) is connected to the middle portions of the left side and the right side of the pavement main body (1) through bolts, and the other end of the electric telescopic cylinder (4) is fixedly connected with the protective cover plate (5);
the high-temperature resistant rubber column (18) is close to the one end of horizontal drainage pipe (3) and has been seted up circular slot (19), the equal fixedly connected with electrothermal tube (20) in both ends around circular slot (19) is inside, the other end fixedly connected with motor (21) of electrothermal tube (20), the one end rotation that motor (21) is close to drainage canal (8) is connected with motor shaft (22), motor shaft (22) outside fixedly connected with blows fan leaf (7).
2. The anti-crystallization pipeline device for tunnels based on the Internet of things as claimed in claim 1, wherein: the tunnel (2) is poured on the top of the pavement main body (1), and an industrial computer (6) is connected to the middle of the right side of the tunnel (2) through bolts.
3. The anti-crystallization pipeline device for tunnels based on the Internet of things as claimed in claim 2, wherein: and the signal output end of the industrial control computer (6) is connected with the signal input ends of the electric telescopic cylinder (4), the motor (21) and the ultrasonic generator (9).
4. The anti-crystallization pipeline device for tunnels based on the Internet of things as claimed in claim 1, wherein: a cavity (16) is formed in the transverse drainage pipe (3), and phase change heat storage ceramic (17) is fixedly connected in the cavity (16).
5. The anti-crystallization pipeline device for tunnels based on the Internet of things as claimed in claim 2, wherein: and the signal output end of the raindrop sensor (15) is connected with the signal input end of the industrial computer (6).
6. The anti-crystallization pipeline device for tunnels based on the Internet of things as claimed in claim 2, wherein: and the industrial personal computer (6) is connected with an external Internet of things network.
7. The anti-crystallization pipeline device for tunnels based on the Internet of things as claimed in claim 1, wherein: the high-temperature resistant rubber column (18) is matched with the pipe hole of the transverse drainage pipe (3).
8. The anti-crystallization pipeline device for tunnels based on the Internet of things as claimed in claim 1, wherein: the protective outer tube (10) and the vertical connecting plate (11) are made of stainless metal materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110833129.0A CN113389594B (en) | 2021-07-22 | 2021-07-22 | Crystallization pipeline device is prevented in tunnel based on thing networking |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110833129.0A CN113389594B (en) | 2021-07-22 | 2021-07-22 | Crystallization pipeline device is prevented in tunnel based on thing networking |
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| CN113389594B true CN113389594B (en) | 2022-03-15 |
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| CN114991862B (en) * | 2022-07-01 | 2023-04-07 | 重庆交通大学 | Ultrasonic resonance device for crystallization treatment of subway tunnel transverse drain pipe |
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| JPH06229200A (en) * | 1993-02-05 | 1994-08-16 | C I Kasei Co Ltd | Leak preventive structure of shielded tunnel |
| CN103195455A (en) * | 2013-03-11 | 2013-07-10 | 中铁二院工程集团有限责任公司 | Large section tunnel construction support and protection system and construction method under flabby geological environment |
| CN103266915A (en) * | 2013-06-05 | 2013-08-28 | 桂林电子科技大学 | Mine automated water drainage system based on internet of things |
| CN105478413A (en) * | 2015-12-31 | 2016-04-13 | 重庆交通大学 | Ultrasonic crystal remover for removing calcium and magnesium crystals in tunnel drainage pipe, and use method thereof |
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2021
- 2021-07-22 CN CN202110833129.0A patent/CN113389594B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06229200A (en) * | 1993-02-05 | 1994-08-16 | C I Kasei Co Ltd | Leak preventive structure of shielded tunnel |
| CN103195455A (en) * | 2013-03-11 | 2013-07-10 | 中铁二院工程集团有限责任公司 | Large section tunnel construction support and protection system and construction method under flabby geological environment |
| CN103266915A (en) * | 2013-06-05 | 2013-08-28 | 桂林电子科技大学 | Mine automated water drainage system based on internet of things |
| CN105478413A (en) * | 2015-12-31 | 2016-04-13 | 重庆交通大学 | Ultrasonic crystal remover for removing calcium and magnesium crystals in tunnel drainage pipe, and use method thereof |
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