CN114483191A - Gas detection method for non-coal gas tunnel engineering - Google Patents
Gas detection method for non-coal gas tunnel engineering Download PDFInfo
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- CN114483191A CN114483191A CN202210020989.7A CN202210020989A CN114483191A CN 114483191 A CN114483191 A CN 114483191A CN 202210020989 A CN202210020989 A CN 202210020989A CN 114483191 A CN114483191 A CN 114483191A
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- 238000001514 detection method Methods 0.000 title claims abstract description 80
- 239000003034 coal gas Substances 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 37
- 230000005674 electromagnetic induction Effects 0.000 claims description 21
- 238000013461 design Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/28—Rail tracks for guiding vehicles when running on road or similar surface
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
- F16M11/425—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels along guiding means
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- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The invention discloses a gas detection method for non-coal gas tunnel engineering, which comprises the following steps: the method comprises the following steps of tunnel slide rail installation, gas detection mechanism installation, gas exhaust device installation, gas transmission pipeline layout and gas detection exhaust treatment. The invention can not only continuously detect the non-coal gas tunnel, but also absorb and exhaust the gas at the leakage point when finding the gas leakage position, thereby reducing the gas content in the tunnel and improving the safety, and meanwhile, the invention can send the gas leakage point to the background control center, thereby being convenient for timely processing, and rechecking the plugging point, thereby greatly improving the detection efficiency.
Description
Technical Field
The invention relates to a gas detection method for non-coal gas tunnel engineering.
Background
The gas of the traffic tunnel can be divided into coal bed gas and non-coal bed gas, and the non-coal bed gas tunnel exists in a non-coal stratum or a non-coal stratum in a coal measure stratum far away from a coal bed, and is mainly in a free state. The method has the characteristics of uncertain outburst place, outburst pressure and outburst amount in tunnel engineering, and has the characteristics of low occurrence probability and extremely high risk degree of the blasting disasters.
The gas detection method in the prior art can only detect and alarm gas in the tunnel generally, and cannot reduce the content of the gas in the tunnel in time, so that the safety problem of constructors in the tunnel is easily caused.
Disclosure of Invention
The invention aims to provide a technical scheme of a gas detection method for non-coal gas tunnel engineering aiming at the defects in the prior art, which can not only continuously detect a non-coal gas tunnel, but also absorb and exhaust gas at a leakage point when the leakage position of the gas is found, reduce the content of the gas in the tunnel, improve the safety, simultaneously send the gas leakage point to a background control center, facilitate the timely treatment, and recheck the plugging point, thereby greatly improving the detection efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a gas detection method for non-coal gas tunnel engineering is characterized by comprising the following steps:
1) mounting of tunnel slide rail
a. Firstly, determining the size of a slide rail according to the size of a tunnel, processing the corresponding slide rail, and arranging a first rail groove and a second rail groove along the slide rail, wherein the second rail groove is positioned at one side close to the inner wall of the tunnel;
b. then cleaning the two sides in the tunnel, removing stone or particle impurities, ensuring that the two sides in the tunnel are kept at the same level, and preventing the potential safety hazard caused by the inclination of a detection mechanism;
c. laying the machined slide rails on two sides in the tunnel, fixing the slide rails, enabling the length of the slide rails to exceed the opening of the tunnel, ensuring that the two slide rails are parallel to each other, making a prompt mark, arranging a detection mechanism on the slide rails after the detection mechanism is installed outside the tunnel, and detecting gas entering the tunnel along the slide rails;
2) gas detection mechanism installation
a. Firstly, determining the size of a protective cover according to the size of a tunnel, processing the corresponding protective cover, wherein the protective cover is of an arc structure, the bottom of the protective cover is provided with a first opening, the size of the first opening is equal to the distance between two sliding rails, a storage battery pack is arranged along the inner side surface of the protective cover, the protective cover can play a role of protecting constructors in the tunnel, the design of the first opening can ensure normal construction in the tunnel, and meanwhile, the normal detection of a detection mechanism is not influenced;
b. then determining the size of the arc-shaped support according to the distance between the protective cover and the inner wall of the tunnel, manufacturing the corresponding arc-shaped support, wherein a second opening is formed in the bottom of the arc-shaped support, the size of the second opening is equal to the distance between the two slide rails, the two processed arc-shaped supports are fixed on the outer side of the protective cover through a supporting seat and a supporting rod, and the stability and the reliability of connection between the arc-shaped support and the protective cover are greatly improved due to the design of the supporting seat and the supporting rod;
c. then, gas sensors and alarm indicating lamps are installed at equal intervals along the side face of the outer circumference of the arc-shaped support, meanwhile, a control box is installed along the top face of the protective cover, the gas sensors can detect gas on the inner wall of the tunnel, when a gas signal is detected, the corresponding alarm indicating lamps are turned on, the control box controls the corresponding gas suction cover to quickly adsorb the gas leakage position, the content of the gas in the tunnel is reduced, and the safety of constructors is improved;
d. finally, a base is arranged along the lower part of the supporting seat, a first roller, a second roller and a driving wheel are arranged on the base, the first roller is matched with the first track groove, the second roller and the driving wheel are matched with the second track groove, a driving mechanism is arranged on the supporting seat, the driving wheel can be driven to rotate through the driving mechanism, the whole detection mechanism is driven to move along the slide rail, the first roller and the second roller not only can play a role in supporting, but also can improve the stability and reliability of the movement of the detection mechanism;
3) gas exhaust device installation
a. Firstly, determining the distribution position of the air suction cover according to the size of the protective cover, distributing the air suction cover along the side surface of the outer circumference of the protective cover at equal intervals, and enabling the protective cover to be located in the same vertical plane, wherein the air suction cover distributed in the circumferential direction can be used for adsorbing gas at any gas leakage point in the tunnel, so that the content of the gas in the tunnel can be quickly reduced;
b. then, the shunt tubes are connected to each air suction cover, the shunt tubes are communicated with each other through the air collecting tube, the air collecting tube is provided with a fan, and the fan generates wind power to convey gas to the exhaust device through the air suction covers and the shunt tubes and the air collecting tube;
c. then, an exhaust device and an air pump are installed according to design requirements, the air pump is located on one side of the exhaust device and is connected with the exhaust device through a pipeline, the air pump can control the exhaust device to work, the exhaust device is convenient to communicate with a gas pipeline, and absorbed gas is rapidly discharged;
4) gas pipeline layout
Firstly, horizontally arranging an installation groove along the top of the inner wall of the tunnel, pouring concrete on the inner wall of the installation groove, clamping a gas transmission pipeline into the installation groove for fixing after the concrete reaches a set strength, arranging gas transmission holes on the installation groove at equal intervals, installing a first electromagnetic induction head on each gas transmission hole, and pouring the installation groove by using the concrete to enable the installation groove to be flush with the inner wall of the tunnel;
5) gas detection exhaust treatment
a. Firstly, controlling an assembled detection mechanism to move into a tunnel along a sliding rail through a control box, and controlling the moving speed of the detection mechanism, wherein the moving speed is 40-80 cm/s;
b. when the detection mechanism moves to the position of gas leakage in the tunnel, the corresponding gas sensor on the left arc-shaped support detects a gas signal, and a corresponding alarm indicator lamp flickers, and meanwhile, the detection mechanism continues to move forwards until the air suction cover is close to the position of gas leakage, and the detection mechanism stops moving;
c. starting an exhaust device, communicating the exhaust device with a first electromagnetic induction head on a gas transmission pipeline through the exhaust device, starting a fan, generating wind power through the fan, conveying leaked gas into the gas transmission pipeline through an air suction cover, a flow dividing pipe and a gas collecting pipe through the exhaust device, and discharging the leaked gas;
d. meanwhile, the control box transmits the information to a background control center, so that the position of gas leakage can be conveniently and timely processed;
e. after the treatment is finished, the detection mechanism continues to advance, and meanwhile, the corresponding gas sensor on the right arc-shaped support carries out detection and rechecking, so that the gas leakage position is guaranteed to be blocked completely.
The gas detection method has simple steps, can continuously detect the non-coal gas tunnel, can absorb and exhaust gas of the leakage point when finding the position of gas leakage, reduces the content of the gas in the tunnel, improves the safety, can send the gas leakage point to a background control center, is convenient to process in time, rechecks the plugging point, and greatly improves the detection efficiency.
Further, the depth of the first track groove in the step 1) is larger than that of the second track groove, so that the stability and the reliability of the detection mechanism during movement are improved.
Further, a controller, a signal transceiver and a locator are arranged in the control box in the step 2), the signal transceiver and the locator are electrically connected with the controller, the controller is preferably a CPU, the controller can control the whole detection mechanism to operate, the signal transceiver is used for sending information such as the concentration of gas and leakage points of the gas, and the locator is preferably a GPS locator and used for locating the position of the detection mechanism in real time.
Further, actuating mechanism in step 2) includes motor, driving gear and driven gear, and on the supporting seat was located to the motor, the output shaft of driving gear connection motor, driven gear connected action wheel, driving gear and driven gear intermeshing, it is rotatory to drive the driving gear through the motor, and then can drive the action wheel through driven gear and rotate, realizes that whole detection mechanism moves along the slide rail.
Further, be provided with the solenoid valve on the shunt tubes in step 3), solenoid valve and control box electric connection, the solenoid valve is used for controlling the switch of shunt tubes, and after corresponding gas sensor detected the gas signal, its solenoid valve that corresponds was opened, is convenient for absorb the gas of gas leakage point fast through the fan, reduces the content of gas in the tunnel.
Further, the exhaust device in step 3) comprises a fixed plate and a lifting plate, the lifting plate is connected with the fixed plate through a lifting mechanism, the lifting mechanism is communicated with the air pump, an exhaust pipe is arranged at the center of the top surface of the lifting plate, a second electromagnetic induction head is arranged on the exhaust pipe, and the second electromagnetic induction head is matched with the first electromagnetic induction head. Can drive the lifter plate through elevating system and reciprocate, be convenient for blast pipe and gas transmission pipeline intercommunication, or make the blast pipe leave gas transmission pipeline, first electromagnetic induction head and second electromagnetic induction head are convenient for the gas transmission hole and are opened or close, improve the output efficiency of gas.
Further, elevating system includes cylinder and piston rod, and the cylinder is fixed in on the fixed plate through the dog, and the lifter plate passes through the piston rod and connects the cylinder, can drive the lifter plate through the piston rod through the cylinder and reciprocate, realizes automated control.
Furthermore, the exhaust pipe is provided with an exhaust hole which is convenient for the communication of the gas transmission pipeline and discharges the gas through the gas transmission pipeline.
In that step, the exhaust pipe is communicated with the gas collecting pipe through the hose, so that the gas collecting pipe is conveniently communicated with the exhaust pipe.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the gas detection method disclosed by the invention has simple steps, not only can be used for continuously detecting the non-coal gas tunnel, but also can be used for absorbing and exhausting gas at the leakage point when the leakage position of the gas is found, so that the content of the gas in the tunnel is reduced, the safety is improved, meanwhile, the gas leakage point can be sent to a background control center, the timely treatment is facilitated, the rechecking of the plugging point is carried out, and the detection efficiency is greatly improved.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram illustrating the arrangement of slide rails in a gas detection method for non-coal gas tunnel engineering according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at I;
FIG. 3 is a front view of the detection mechanism of the present invention;
FIG. 4 is a right side view of the detection mechanism of the present invention;
FIG. 5 is a schematic view of the structure of an exhaust apparatus according to the present invention;
fig. 6 is a control schematic diagram of the present invention.
In the figure: 1-a tunnel; 2-a gas pipeline; 3-a slide rail; 4-a first track groove; 5-a second track groove; 6-protective cover; 7-arc support; 8-a support bar; 9-a support seat; 10-a first roller; 11-a second roller; 12-a battery pack; 13-a gas sensor; 14-an exhaust; 15-a base; 16-a motor; 17-a driving wheel; 19-alarm indicator light; 20-a control box; 21-a suction hood; 22-a gas collecting pipe; 23-a shunt tube; 24-a solenoid valve; 25-a fan; 26-an air pump; 27-a fixing plate; 28-a lifter plate; 29-a stopper; 30-a cylinder; 31-a piston rod; 32-a hose; 33-an exhaust pipe; 34-a second electromagnetic induction head; 35-exhaust hole; 36-a controller; 37-a signal transceiver; 38-positioner.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terms first, second and the like in the description and in the claims, and in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
As shown in fig. 1 to 6, a gas detection method for non-coal gas tunnel engineering according to the present invention includes the following steps:
1) mounting of sliding rails 3 in tunnel 1
a. Firstly, determining the size of a slide rail 3 according to the size of a tunnel 1, processing the corresponding slide rail 3, arranging a first rail groove 4 and a second rail groove 5 along the slide rail 3, wherein the second rail groove 5 is positioned at one side close to the inner wall of the tunnel 1, and through the design of the first rail groove 4 and the second rail groove 5, the detection mechanism is convenient to carry out limiting support, the stability and the reliability of the detection mechanism during movement are improved, and meanwhile, the normal construction in the tunnel 1 is not influenced; the depth of the first track groove 4 is larger than that of the second track groove 5, so that the stability and the reliability of the detection mechanism during moving are improved.
b. Then, cleaning the two sides in the tunnel 1, removing stone or particle impurities, ensuring that the two sides in the tunnel 1 are kept at the same level, and preventing a detection mechanism from being inclined to generate potential safety hazards;
c. then, the machined slide rails 3 are laid on two sides in the tunnel 1 and fixed, the length of each slide rail 3 exceeds the opening of the tunnel 1, the two slide rails 3 are ensured to be parallel to each other, prompt marks are made, and a detection mechanism can be arranged on the slide rails 3 after being installed outside the tunnel 1 and enters the tunnel 1 along the slide rails 3 to detect gas;
2) gas detection mechanism installation
a. Firstly, determining the size of a protective cover 6 according to the size of a tunnel 1, processing the corresponding protective cover 6, wherein the protective cover 6 is of an arc structure, the bottom of the protective cover 6 is provided with a first opening, the size of the first opening is equal to the distance between two sliding rails 3, a storage battery pack 12 is arranged along the inner side surface of the protective cover 6, the protective cover 6 can play a role of protecting constructors in the tunnel 1, the design of the first opening can ensure normal construction in the tunnel 1, and meanwhile, normal detection of a detection mechanism is not influenced;
b. then, the size of the arc-shaped support 7 is determined according to the distance between the protective cover 6 and the inner wall of the tunnel 1, the corresponding arc-shaped support 7 is manufactured, a second opening is formed in the bottom of the arc-shaped support 7, the size of the second opening is equal to the distance between the two sliding rails 3, the two processed arc-shaped supports 7 are fixed to the outer side of the protective cover 6 through a supporting seat 9 and a supporting rod 8, and the stability and the reliability of connection between the arc-shaped supports 7 and the protective cover 6 are greatly improved due to the design of the supporting seat 9 and the supporting rod 8;
c. then, gas sensors 13 and alarm indicator lamps 19 are installed at equal intervals along the side face of the outer circumference of the arc-shaped support 7, meanwhile, a control box 20 is installed along the top face of the protective cover 6, the gas sensors 13 can detect gas on the inner wall of the tunnel 1, when a gas signal is detected, the corresponding alarm indicator lamps 19 are lightened, the control box 20 controls the corresponding gas suction covers 21 to quickly adsorb the gas leakage position, the content of the gas in the tunnel 1 is reduced, and the safety of constructors is improved; the control box 20 is internally provided with a controller 36, a signal transceiver 37 and a locator 38, the signal transceiver 37 and the locator 38 are both electrically connected with the controller 36, the controller 36 is preferably a CPU, the controller 36 can control the whole detection mechanism to operate, the signal transceiver 37 is used for sending information such as the concentration of gas and the leakage point of the gas, and the locator 38 is preferably a GPS locator 38 for locating the position of the detection mechanism in real time.
d. Finally, a base 15 is arranged along the lower portion of the supporting seat 9, a first roller 10, a second roller 11 and a driving wheel 17 are arranged on the base 15, the first roller 10 is matched with the first track groove 4, the second roller 11 and the driving wheel 17 are matched with the second track groove 5, a driving mechanism is arranged on the supporting seat 9, the driving wheel 17 can be driven to rotate through the driving mechanism, the whole detection mechanism is driven to move along the sliding rail 3, the first roller 10 and the second roller 11 not only can play a supporting role, but also can improve the stability and reliability of the movement of the detection mechanism; actuating mechanism includes motor 16, driving gear and driven gear, and on supporting seat 9 was located to motor 16, driving gear connection motor 16's output shaft, driven gear connection action wheel 17, driving gear and driven gear intermeshing, it is rotatory to drive the driving gear through motor 16, and then can drive action wheel 17 through driven gear and rotate, realizes that whole detection mechanism moves along slide rail 3.
3) Gas exhaust device 14 installation
a. Firstly, determining the distribution position of the air suction covers 21 according to the size of the protective cover 6, distributing the air suction covers 21 at equal intervals along the outer circumferential side surface of the protective cover 6, and enabling the protective cover 6 to be located in the same vertical plane, wherein the air suction covers 21 distributed in the circumferential direction can adsorb gas at any gas leakage point in the tunnel 1, so that the content of the gas in the tunnel 1 can be quickly reduced;
b. then, a shunt pipe 23 is connected to each air suction cover 21, the shunt pipes 23 are communicated with each other through a gas collecting pipe 22, a fan 25 is installed on the gas collecting pipe 22, wind power is generated through the fan 25, and gas can be conveyed to the exhaust device 14 through the air suction covers 21 through the shunt pipes 23 and the gas collecting pipe 22; be provided with solenoid valve 24 on the shunt tubes 23, solenoid valve 24 and control box 20 electric connection, solenoid valve 24 are used for controlling the switch of shunt tubes 23, and after corresponding gas sensor 13 detected the gas signal, its solenoid valve 24 that corresponds opened, are convenient for absorb the gas of gas leakage point fast through fan 25, reduce the content of the interior gas of tunnel 1.
c. Then, the air exhaust device 14 and the air pump 26 are installed according to design requirements, the air pump 26 is located on one side of the air exhaust device 14, the air pump 26 is connected with the air exhaust device 14 through a pipeline, the air exhaust device 14 can be controlled to work through the air pump 26, the air exhaust device 14 is conveniently communicated with the air transmission pipeline 2, and absorbed gas is rapidly exhausted; the exhaust device 14 comprises a fixing plate 27 and a lifting plate 28, the lifting plate 28 is connected with the fixing plate 27 through a lifting mechanism, the lifting mechanism is communicated with the air pump 26, an exhaust pipe 33 is arranged at the center of the top surface of the lifting plate 28, a second electromagnetic induction head 34 is arranged on the exhaust pipe 33, and the second electromagnetic induction head 34 is matched with the first electromagnetic induction head. The lifting plate 28 can be driven to move up and down through the lifting mechanism, so that the exhaust pipe 33 is conveniently communicated with the gas transmission pipeline 2, or the exhaust pipe 33 is enabled to leave the gas transmission pipeline 2, the first electromagnetic induction head and the second electromagnetic induction head 34 are convenient for opening or closing the gas transmission hole, and the output efficiency of gas is improved. In order to improve the control precision, a camera can be arranged on the lifting plate 28, so that the assembly precision of the exhaust pipe 33 communicated with the air delivery hole can be controlled conveniently according to real-time pictures.
The lifting mechanism comprises an air cylinder 30 and a piston rod 31, the air cylinder 30 is fixed on the fixing plate 27 through a stop block 29, the lifting plate 28 is connected with the air cylinder 30 through the piston rod 31, and the lifting plate 28 can be driven to move up and down through the air cylinder 30 and the piston rod 31, so that automatic control is realized.
The exhaust pipe 33 is provided with an exhaust hole 35, and the exhaust hole 35 is convenient for the gas transmission pipeline 2 to be communicated and exhausts the gas through the gas transmission pipeline 2. The exhaust pipe 33 is communicated with the gas collecting pipe 22 through the hose 32, so that the gas collecting pipe 22 is communicated with the exhaust pipe 33.
4) Gas transmission pipeline 2 layout
Firstly, horizontally arranging a mounting groove along the top of the inner wall of a tunnel 1, pouring concrete on the inner wall of the mounting groove, clamping a gas transmission pipeline 2 into the mounting groove for fixing after the concrete reaches a set strength, arranging gas transmission holes on the mounting groove at equal intervals, arranging a first electromagnetic induction head on each gas transmission hole, pouring the mounting groove by using the concrete to enable the mounting groove to be flush with the inner wall of the tunnel 1, and through the design of the first electromagnetic induction heads, facilitating the matching connection of an exhaust device 14 and the corresponding gas transmission holes, discharging absorbed gas through the gas transmission pipeline 2 and greatly reducing the content of the gas in the tunnel 1;
5) gas detection exhaust treatment
a. Firstly, the assembled detection mechanism is controlled to move into the tunnel 1 along the slide rail 3 through the control box 20, and the moving speed of the detection mechanism is controlled to be 40-80 cm/s;
b. when the detection mechanism moves to the position of gas leakage in the tunnel 1, the corresponding gas sensor 13 on the left arc-shaped support 7 detects a gas signal, and enables the corresponding alarm indicator lamp 19 to flicker, meanwhile, the detection mechanism continues to move forwards until the gas suction cover 21 is close to the position of gas leakage, and the detection mechanism stops moving;
c. then starting the exhaust device 14, communicating the exhaust device 14 with the first electromagnetic induction head on the gas transmission pipeline 2, starting the fan 25, generating wind power through the fan 25, conveying the leaked gas into the gas transmission pipeline 2 through the suction hood 21, the shunt pipe 23 and the gas collecting pipe 22 through the exhaust device 14, and discharging the leaked gas;
d. meanwhile, the control box 20 transmits the information to a background control center, so that the position of gas leakage can be conveniently and timely processed;
e. after the treatment is finished, the detection mechanism continues to advance, and meanwhile, the corresponding gas sensor 13 on the right arc-shaped support 7 carries out detection and rechecking, so that the gas leakage position is blocked completely.
The gas detection method has simple steps, can continuously detect the non-coal gas tunnel 1, can absorb and exhaust gas of the leakage point when finding the position of gas leakage, reduces the content of the gas in the tunnel 1, improves the safety, can send the gas leakage point to a background control center, is convenient for timely processing, rechecks the plugging point, and greatly improves the detection efficiency.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple variations, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are within the scope of the present invention.
Claims (9)
1. A gas detection method for non-coal gas tunnel engineering is characterized by comprising the following steps:
1) mounting of tunnel slide rail
a. Firstly, determining the size of a slide rail according to the size of a tunnel, processing the corresponding slide rail, and forming a first rail groove and a second rail groove along the slide rail, wherein the second rail groove is positioned at one side close to the inner wall of the tunnel;
b. then cleaning the two sides in the tunnel, removing stone or particle impurities and ensuring that the two sides in the tunnel are kept at the same level;
c. laying the processed slide rails on two sides in the tunnel, fixing the slide rails, ensuring that the two slide rails are parallel to each other and making prompt marks, wherein the length of each slide rail exceeds the opening of the tunnel;
2) gas detection mechanism installation
a. Firstly, determining the size of a protective cover according to the size of a tunnel, processing the corresponding protective cover, wherein the protective cover is of an arc structure, the bottom of the protective cover is provided with a first opening, the size of the first opening is equal to the distance between two sliding rails, and a storage battery pack is arranged along the inner side surface of the protective cover;
b. then determining the size of the arc-shaped support according to the distance between the protective cover and the inner wall of the tunnel, manufacturing the corresponding arc-shaped support, wherein a second opening is formed in the bottom of the arc-shaped support, the size of the second opening is equal to the distance between the two sliding rails, and fixing the two processed arc-shaped supports on the outer side of the protective cover through a supporting seat and a supporting rod;
c. then, gas sensors and alarm indicating lamps are arranged at equal intervals along the side surface of the outer circumference of the arc-shaped support, and a control box is arranged along the top surface of the protective cover;
d. finally, a base is arranged along the lower part of the supporting seat, a first roller, a second roller and a driving wheel are arranged on the base, the first roller is matched with the first track groove, the second roller and the driving wheel are matched with the second track groove, and a driving mechanism is arranged on the supporting seat;
3) gas exhaust device installation
a. Firstly, determining the distribution position of the air suction cover according to the size of the protective cover, distributing the air suction cover along the side surface of the outer circumference of the protective cover at equal intervals, and positioning the protective cover in the same vertical plane;
b. then, connecting shunt tubes on each air suction cover, communicating the shunt tubes through a gas collecting tube, and mounting a fan on the gas collecting tube;
c. then, an air exhaust device and an air pump are installed according to design requirements, the air pump is positioned on one side of the air exhaust device, and the air pump is connected with the air exhaust device through a pipeline;
4) gas pipeline layout
Firstly, horizontally arranging an installation groove along the top of the inner wall of the tunnel, pouring concrete on the inner wall of the installation groove, clamping a gas transmission pipeline into the installation groove for fixing after the concrete reaches a set strength, arranging gas transmission holes on the installation groove at equal intervals, installing a first electromagnetic induction head on each gas transmission hole, and pouring the installation groove by using the concrete so that the installation groove is flush with the inner wall of the tunnel;
5) gas detection exhaust treatment
a. Firstly, the assembled detection mechanism is controlled to move into the tunnel along the sliding rail through the control box, and the moving speed of the detection mechanism is controlled;
b. when the detection mechanism moves to the position of gas leakage in the tunnel, the corresponding gas sensor on the left arc-shaped support detects a gas signal, and a corresponding alarm indicator lamp flickers, and meanwhile, the detection mechanism continues to move forwards until the air suction cover is close to the position of gas leakage, and the detection mechanism stops moving;
c. starting an exhaust device, communicating the exhaust device with a first electromagnetic induction head on a gas transmission pipeline through the exhaust device, starting a fan, generating wind power through the fan, transmitting leaked gas into the gas transmission pipeline through a flow dividing pipe and a gas collecting pipe through the suction hood and the exhaust device, and discharging the leaked gas;
d. meanwhile, the control box transmits the information to a background control center, so that the position of gas leakage can be conveniently and timely processed;
e. after the treatment is finished, the detection mechanism continues to advance, and meanwhile, the corresponding gas sensor on the right arc-shaped support carries out detection and rechecking, so that the gas leakage position is guaranteed to be blocked completely.
2. The gas detection method for non-coal gas tunnel engineering according to claim 1, characterized in that: the depth of the first track groove in step 1) is greater than the depth of the second track groove.
3. The gas detection method for non-coal gas tunnel engineering according to claim 1, characterized in that: a controller, a signal transceiver and a positioner are arranged in the control box in the step 2), and the signal transceiver and the positioner are electrically connected with the controller.
4. The gas detection method for non-coal gas tunnel engineering according to claim 1, characterized in that: the driving mechanism in the step 2) comprises a motor, a driving gear and a driven gear, the motor is arranged on the supporting seat, the driving gear is connected with an output shaft of the motor, the driven gear is connected with the driving gear, and the driving gear is meshed with the driven gear.
5. The gas detection method for non-coal gas tunnel engineering according to claim 1, characterized in that: the shunt pipe in the step 3) is provided with an electromagnetic valve, and the electromagnetic valve is electrically connected with the control box.
6. The gas detection method for non-coal gas tunnel engineering according to claim 1, characterized in that: the exhaust device in the step 3) comprises a fixed plate and a lifting plate, the lifting plate is connected with the fixed plate through a lifting mechanism, the lifting mechanism is communicated with the air pump, an exhaust pipe is arranged at the center of the top surface of the lifting plate, a second electromagnetic induction head is arranged on the exhaust pipe, and the second electromagnetic induction head is matched with the first electromagnetic induction head.
7. The gas detection method for non-coal gas tunnel engineering according to claim 6, characterized in that: the lifting mechanism comprises an air cylinder and a piston rod, the air cylinder is fixed on the fixed plate through a stop block, and the lifting plate is connected with the air cylinder through the piston rod.
8. The gas detection method for non-coal gas tunnel engineering according to claim 6, characterized in that: and the exhaust pipe is provided with an exhaust hole.
9. The gas detection method for non-coal gas tunnel engineering according to claim 8, characterized in that: the exhaust pipe is communicated with the gas collecting pipe through a hose.
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| CN202210020989.7A CN114483191A (en) | 2022-01-10 | 2022-01-10 | Gas detection method for non-coal gas tunnel engineering |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115235551A (en) * | 2022-09-22 | 2022-10-25 | 国网山西省电力公司太原供电公司 | Cable tunnel state monitoring system based on environmental factor monitoring |
| CN115749880A (en) * | 2022-12-09 | 2023-03-07 | 湖南省通泰工程有限公司 | Tunnel construction strutting arrangement |
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2022
- 2022-01-10 CN CN202210020989.7A patent/CN114483191A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115235551A (en) * | 2022-09-22 | 2022-10-25 | 国网山西省电力公司太原供电公司 | Cable tunnel state monitoring system based on environmental factor monitoring |
| CN115235551B (en) * | 2022-09-22 | 2022-12-09 | 国网山西省电力公司太原供电公司 | Cable tunnel state monitoring system based on environmental factor monitoring |
| CN115749880A (en) * | 2022-12-09 | 2023-03-07 | 湖南省通泰工程有限公司 | Tunnel construction strutting arrangement |
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