CN113404541A - Tunnel surrounding rock deformation on-line monitoring and early warning system - Google Patents
Tunnel surrounding rock deformation on-line monitoring and early warning system Download PDFInfo
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- CN113404541A CN113404541A CN202110726258.XA CN202110726258A CN113404541A CN 113404541 A CN113404541 A CN 113404541A CN 202110726258 A CN202110726258 A CN 202110726258A CN 113404541 A CN113404541 A CN 113404541A
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- 239000011435 rock Substances 0.000 title claims abstract description 78
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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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- 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
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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
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/28—Undercarriages for supports with one single telescoping pillar
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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
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
- F16M13/022—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle repositionable
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Abstract
The invention provides an online monitoring and early warning system for tunnel surrounding rock deformation, which comprises: the method comprises the steps that a signal acquisition system acquires information signals of local deformation of tunnel surrounding rocks, a signal analysis system analyzes the information signals to obtain analysis results of the local deformation of the tunnel surrounding rocks, a central control system triggers the central control system to send out early warning instructions according to comparison between the analysis results and a preset threshold value, and when the analysis results are larger than the preset threshold value; the information display system analyzes the result after receiving the early warning instruction; the information acousto-optic warning system carries out early warning after receiving the early warning instruction; and the safety shielding device closes the tunnel entrance after receiving the early warning instruction. The sensing device can measure the micro deformation of a plurality of groups of surrounding rocks and can be used as a real-time deformation monitoring system of the tunnel. And analyzing according to the acquired signals, and outputting the current danger level of the deformation of the tunnel surrounding rock. When the tunnel has a fault, the shielding device closes the entrance of the tunnel to prevent vehicles from entering the tunnel.
Description
Technical Field
The invention relates to the technical field of tunnel surrounding rock deformation surveying and mapping, in particular to a safety guarantee system based on-line monitoring and early warning of tunnel surrounding rock deformation.
Background
With the rapid development of economic society and the background of the strong popularization of township in China, the construction of basic traffic facilities such as roads, railways, underground railways, submarine tunnels and the like in China is accelerated gradually, so that the total mileage of the construction and operation of various roads is longer and longer. In various types of road construction, tunnels are an effective construction method often used in order to reduce the impact on the environment. With the increase of the mileage of tunnel construction, the tunnel safety problem is increasingly prominent. Once the tunnel surrounding rock deforms and collapses, the maintenance cost of the tunnel engineering is greatly increased, and the safety of passing vehicles and personnel is also endangered.
At present, a common mode for monitoring the deformation of tunnel surrounding rocks is to adopt a contact device and a sensor to be matched for measurement. The main problem of this method is that the contact device is greatly affected by environmental factors such as dust on the road, often resulting in poor reliability. In addition, the tunnel area is longer, the number of data acquisition points is more, and the number of the arranged sensors is more. The sensors are expensive and are easily stolen or damaged by people, so that the monitoring system is damaged, and the automatic early warning function is lost.
The method aims to solve the problems of accuracy and reliability of monitoring tunnel surrounding rock deformation. The invention adopts a laser layered linkage monitoring device to develop an automatic early warning system which can realize real-time online monitoring of tunnel surrounding rock deformation.
Disclosure of Invention
Technical problem to be solved
The invention provides an online monitoring and early warning system for tunnel surrounding rock deformation, which aims to solve the problems in the background technology and the defects of the current online monitoring technology for tunnel surrounding rock deformation.
(II) technical scheme
The invention provides an online monitoring and early warning system for tunnel surrounding rock deformation, which comprises:
the signal acquisition system is used for acquiring information signals of local deformation of the tunnel surrounding rock and outputting the information signals;
the signal analysis system receives the information signal, analyzes the information signal to obtain an analysis result of the deformation of the local area of the tunnel surrounding rock and outputs the analysis result;
the analysis result of the deformation of the local area of the tunnel surrounding rock comprises the deformation amount of the local area of the surrounding rock, the direction of the deformation of the surrounding rock and the danger level;
the central control system is used for receiving the number analysis system, comparing an analysis result with a preset threshold value, and triggering the central control system to send an early warning instruction when the analysis result is greater than the preset threshold value;
the information display system receives the early warning instruction and then displays the analysis result;
the information acousto-optic warning system carries out early warning through an acousto-optic signal after receiving the early warning instruction;
and the safety shielding device closes the tunnel entrance after receiving the early warning instruction.
Further, still include the support, the support sets up in the tunnel entry.
Further, the signal acquisition system comprises a light beam generator and a light signal sensing device, wherein the light beam generator is arranged on the bracket, emits an invisible light beam from the entrance of the tunnel, and traverses the whole tunnel at the middle position of the top of the tunnel; the optical signal sensing device is arranged at the top of the tunnel, and the transmission path of the light beam just passes through the central position of the optical signal sensing device.
Furthermore, the optical signal sensing device consists of a plurality of circles of concentric light sensing rings with different diameters, and the light sensing rings with different diameters are used for predicting information signals of local deformation of the tunnel surrounding rock; the number of the optical signal sensing devices is at least one, and the installation number of the optical signal sensing devices depends on the length of the monitored tunnel and the early warning precision range.
Further, light signal sensing device includes sensing head, telescopic link and base, the sensing head passes through telescopic link fixes on the base, the last fastening screw that is provided with of telescopic link, the symmetry is provided with two rectangular shape through-holes on the base, the base passes two through two at least bolts rectangular shape through-hole is fixed at the tunnel top.
Further, the central control system is a control room, the control room is provided with a control platform, a controller is arranged in the control platform, and the controller is used for sending out an early warning instruction.
Further, the information display system is in including setting up electronic display screen and the setting on the support are in the display screen of control room works as electronic display screen receives during the early warning instruction, the current situation of passing in tunnel is shown on the electronic display screen, and the warning is done through the vehicle in tunnel and is kept away the preparation of danger, and simultaneously, show deflection, the position and the danger level of country rock deformation of country rock local area deformation on the display screen in the control room, supplementary tunnel managers in time, pinpoint the tunnel trouble place region to make the prejudgement and guide to tunnel safety condition and restore tunnel trouble region.
Further, the information acousto-optic warning system comprises a warning lamp arranged on the bracket, and a fault prompting lamp and a buzzer which are arranged on the control platform; when the central control system sends the early warning instruction, the control platform controls the fault prompting lamp to be turned on and the buzzer to be connected, so that tunnel managers are reminded to look over tunnel fault information through acousto-optic information, and the auxiliary personnel make corresponding reflection actions, and meanwhile, the warning lamp continuously flickers to remind the vehicles which do not enter the tunnel to decelerate, and the information whether the current tunnel is in line with the current traffic information or not is given on the electronic display screen is timely looked over.
Further, the safety shielding device is arranged outside the tunnel entrance and has a safety distance with the tunnel entrance, the safety shielding device is a mechanical safety shielding device, and when the mechanical safety shielding device receives the early warning instruction, a shielding rod of the mechanical safety shielding device moves down to close tunnel passing authorization to prevent vehicles from entering.
(III) advantageous effects
The invention provides an online monitoring and early warning system for tunnel surrounding rock deformation, which comprises: the signal acquisition system is used for acquiring information signals of local deformation of the tunnel surrounding rock and outputting the information signals; the signal analysis system receives the information signal, analyzes the information signal to obtain an analysis result of the deformation of the local area of the tunnel surrounding rock and outputs the analysis result; the analysis result of the deformation of the local area of the tunnel surrounding rock comprises the deformation amount of the local area of the surrounding rock, the direction of the deformation of the surrounding rock and the danger level; the central control system is used for receiving the number analysis system, comparing an analysis result with a preset threshold value, and triggering the central control system to send an early warning instruction when the analysis result is greater than the preset threshold value; the information display system receives the early warning instruction and then displays the analysis result; the information acousto-optic warning system carries out early warning through an acousto-optic signal after receiving the early warning instruction; and the safety shielding device closes the tunnel entrance after receiving the early warning instruction.
1. The optical signal sensing device is mainly composed of a plurality of circles of concentric light sensing rings with different diameters, and the light sensing rings with different diameters can predict different deformation amounts of tunnel surrounding rocks. The sensing device can measure the micro deformation of a plurality of groups of surrounding rocks and can also be used as a real-time deformation monitoring system of a tunnel body.
2. The optical signal sensing device and the signal analysis system can accurately judge the area and the direction of the surrounding rock fault. And analyzing according to the acquired signals, and outputting the current danger level of tunnel surrounding rock deformation.
3. The invention provides a tunnel entrance provided with a current tunnel information display screen and a fault warning lamp. When the tunnel on the expressway breaks down, the driver can clearly see the continuously flashing warning lamp at a position far away from the tunnel in the high-speed running process of the vehicle. The driver reduces the speed of the vehicle, and the driving safety is ensured. And when the vehicle is close to the entrance of the tunnel at a low speed, the driver can have time to clearly see the tunnel operation information given on the electronic display screen.
4. The invention provides a mechanical safety shielding device which can execute tunnel closing action according to an instruction given by a central controller. And the distance value between the safety shielding device and the tunnel entrance accords with the relevant national standard, and the minimum safety distance required by vehicle deceleration can be ensured in the high-speed running process of the vehicle. In addition, the shielding rod is made of plastic, so that the vehicle cannot be damaged and secondary personal safety accidents cannot be endangered when the vehicle collides with the shielding rod under special conditions.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flow chart of an online monitoring and early warning system for tunnel surrounding rock deformation in the embodiment of the invention.
Fig. 2 is a schematic structural diagram of an online monitoring and early warning system for tunnel surrounding rock deformation in the embodiment of the invention.
Fig. 3 is a schematic structural diagram of a support of an online monitoring and early warning system for tunnel surrounding rock deformation in an embodiment of the invention.
Fig. 4 is a schematic structural diagram of a light beam generator of the tunnel surrounding rock deformation online monitoring and early warning system in the embodiment of the invention.
Fig. 5 is a schematic structural diagram of an optical signal sensing device of an online tunnel surrounding rock deformation monitoring and early warning system in an embodiment of the present invention.
Fig. 6 is a schematic structural view of an electronic display screen of an online monitoring and early warning system for tunnel surrounding rock deformation in the embodiment of the invention.
Fig. 7 is a schematic structural diagram of a front side of a warning light of the tunnel surrounding rock deformation online monitoring and early warning system in the embodiment of the invention.
Fig. 8 is a schematic structural diagram of the front and back surfaces of a warning light of the tunnel surrounding rock deformation online monitoring and early warning system in the embodiment of the invention.
Fig. 9 is a structural schematic view of a mechanical safety shielding device of a tunnel surrounding rock deformation online monitoring and early warning system in an embodiment of the present invention.
Reference numerals:
1. the device comprises a mechanical safety shielding device, a bracket 2, a light beam generator 3, an optical signal sensing device 4, an electronic display screen 5, a warning lamp 6, a sensing head 7, a telescopic connecting rod 8, a base 9, a strip-shaped through hole 10, a bolt 11, a shielding rod 12 and a fastening screw 13.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As shown in fig. 1 to 9, an embodiment of the present invention provides an online monitoring and early warning system for tunnel surrounding rock deformation, including: the signal acquisition system is used for acquiring information signals of local deformation of the tunnel surrounding rock and outputting the information signals; the signal analysis system receives the information signal, analyzes the information signal to obtain an analysis result of the deformation of the local area of the tunnel surrounding rock and outputs the analysis result; the analysis result of the deformation of the local area of the tunnel surrounding rock comprises the deformation amount of the local area of the surrounding rock, the direction of the deformation of the surrounding rock and the danger level; the central control system is used for receiving the number analysis system, comparing an analysis result with a preset threshold value, and triggering the central control system to send an early warning instruction when the analysis result is greater than the preset threshold value; the information display system receives the early warning instruction and then displays the analysis result; the information acousto-optic warning system carries out early warning through an acousto-optic signal after receiving the early warning instruction; and the safety shielding device closes the tunnel entrance after receiving the early warning instruction.
The tunnel is characterized by further comprising a support 2, wherein the support 2 is arranged at the entrance of the tunnel.
The support of this embodiment can be for by including square steel or round steel or the combination welding of both, or can dismantle the equipment and form, and it erects in the entrance in tunnel, and its bottom is installed on the pre-buried mount pad of ground, can carry out fixed mounting through modes such as welding or threaded connection, the support is including erectting the portion of erectting on tunnel entrance both sides and fixing the horizontal transverse part at two portions of erectting, the support includes a plurality of stiffeners for reinforcing support structure's stability.
The signal acquisition system comprises a light beam generator 3 and a light signal sensing device 4, wherein the light beam generator 3 is arranged on the bracket 2, the light beam generator 3 emits invisible light beams from the entrance of the tunnel, and the light beams traverse the whole tunnel at the middle position of the top of the tunnel; the optical signal sensing device 4 is installed on the top of the tunnel, and the transmission path of the light beam just passes through the central position of the optical signal sensing device 4.
The light beam generator 3 is installed at a lateral portion of the support 2, and light emitted from the light beam generator 3 can be emitted into the tunnel and penetrate the entire tunnel. The optical signal sensing devices 4 are installed on the top of the tunnel and are multiple. A plurality of optical signal sensing devices 4 are coaxially arranged along the light emitted by the optical beam generator 3. The light beam generator 3 can comprise a transmitting part, a rod and a mounting part which is connected with the transverse part of the bracket 2, and the bracket 2 and the mounting part can be detachably connected through bolts and the like, so that later-stage maintenance and accessory replacement are facilitated. The launching part, the rod and the mounting part of the transverse part of the bracket 2 can also be detachably connected, so that later-stage maintenance and accessory replacement are facilitated.
The optical signal sensing device 4 consists of a plurality of circles of concentric light sensing rings with different diameters, and the light sensing rings with different diameters are used for predicting information signals of local deformation of the tunnel surrounding rock; when the light energy emitted by the light beam generator 3 is in the inner layer, the deformation is smaller, when the light energy emitted by the light beam generator 3 is in the inner layer and the outer layer, the deformation is larger, the number of the optical signal sensing devices 4 is at least one, and the installation number of the optical signal sensing devices 4 depends on the length of the monitored tunnel and the early warning precision range. The longer the length of the monitored tunnel, the greater the number of optical signal sensing devices 4 that need to be installed. More corresponding devices are required when the precision of the early warning precision is required to be higher.
Wherein, light signal sensing device 4 includes sensing head 7, telescopic link 8 and base 9, sensing head 7 passes through telescopic link 8 is fixed on the base 9, be provided with fastening screw 13 on the telescopic link 8, the symmetry is provided with two rectangular shape through-holes 10 on the base 9, base 9 passes two through two at least bolts 11 rectangular shape through-hole 10 is fixed at the tunnel top.
After the optical beam generator 3 is installed and fixed, the optical signal sensing device 4 can be used for debugging the height of a receiving part of the optical signal sensing device 4 by loosening the fastening screw 13 in the installation process, after the required height is debugged, the optical signal sensing device 4 is screwed to fasten the telescopic connecting rod 8, the relative position of the optical beam generator 3 and the bolt 11 can be moved by two strip-shaped through holes 10 to adjust the distance between the optical signal sensing device 4 and the side walls of two sides of the tunnel, and finally, the centers of the receiving parts of all the optical signal sensing devices 4 are debugged to be coaxial with the optical beams sent by the optical beam generator 3, namely coaxial with multiple circles of concentric light sensing rings with different diameters of the optical signal sensing device 4.
The light beam generator 3 is communicably connected to the control platform. The optical signal sensing device 4 is communicably connected to the control platform.
The central control system is a control room which is provided with a control platform, a controller is arranged in the control platform, and the controller is used for sending out an early warning instruction. The fault prompting lamp on the control platform of the control room is turned on, the buzzer is connected, tunnel managers are reminded of looking over tunnel fault information through sound and light information, and the auxiliary staff make corresponding reflecting actions.
The control platform of the embodiment can be a computer, an industrial personal computer and the like.
The controller of the present embodiment may refer to a master device that controls the starting, speed regulation, braking, and reversing of the motor by changing the wiring of the master circuit or the control circuit and changing the resistance value in the circuit in a predetermined sequence. The system consists of a program counter, an instruction register, an instruction decoder, a time sequence generator and an operation controller, and is a decision mechanism for issuing commands, namely, the decision mechanism is used for coordinating and commanding the operation of the whole computer system. Such as a CPU or the like.
Wherein, information display system is including setting up electronic display screen 5 and the setting on the support 2 are in the display screen of control room works as electronic display screen 5 receives during the early warning instruction, show the current situation of passing in tunnel on the electronic display screen 5, warn the vehicle through the tunnel and do the preparation of keeping away the danger, simultaneously, show deformation, the position and the danger level of country rock deformation of country rock local area deformation on the display screen in the control room, supplementary tunnel managers in time, pinpoint the tunnel trouble place region to make the prejudgement and guide to tunnel fault area to tunnel safety condition and restore.
The electronic display screen 5 is in communication connection with the control platform.
The information acousto-optic warning system comprises a warning lamp 6 arranged on the support 2, and a fault prompting lamp and a buzzer which are arranged on the control platform; when the central control system sends the early warning instruction, the control platform controls the fault prompting lamp to be turned on and the buzzer to be connected, so that tunnel managers are reminded to look over tunnel fault information through sound and light information, and the auxiliary staff make corresponding reflection actions, meanwhile, the warning lamp 6 continuously flickers to remind the driver of the vehicle which does not enter the tunnel to decelerate, and whether the current information of the tunnel, which is given on the electronic display screen 5, accords with the passing information is timely looked over. And a current tunnel information display screen and a fault warning lamp are arranged. When the tunnel on the expressway breaks down, the driver can clearly see the continuously flashing warning lamp at a position far away from the tunnel in the high-speed running process of the vehicle. The driver reduces the speed of the vehicle, and the driving safety is ensured. And when the vehicle is close to the entrance of the tunnel at a low speed, the driver can have time to clearly see the tunnel operation information given on the electronic display screen.
The safety shielding device is arranged outside the tunnel entrance and has a safety distance with the tunnel entrance, the safety shielding device is a mechanical safety shielding device 1, and when the mechanical safety shielding device 1 receives the early warning instruction, a shielding rod 12 of the mechanical safety shielding device 1 moves downwards to close tunnel passing authorization to prevent a vehicle from entering.
The mechanical safety shielding device 1 is communicably connected to the control platform.
The mechanical safety shield 1 of the present embodiment is a conventional lifting bar arrangement.
And the distance value between the safety shielding device and the tunnel entrance accords with the relevant national standard, and the minimum safety distance required by vehicle deceleration can be ensured in the high-speed running process of the vehicle. In addition, the shielding rod is made of plastic, so that the vehicle cannot be damaged and secondary personal safety accidents cannot be endangered when the vehicle collides with the shielding rod under special conditions.
It is noted that the devices may be interconnected by any suitable electrical or communication link as may be necessary for the practice of the present invention.
In summary, the present invention provides an online monitoring and early warning system for tunnel surrounding rock deformation, including: the signal acquisition system is used for acquiring information signals of local deformation of the tunnel surrounding rock and outputting the information signals; the signal analysis system receives the information signal, analyzes the information signal to obtain an analysis result of the deformation of the local area of the tunnel surrounding rock and outputs the analysis result; the analysis result of the deformation of the local area of the tunnel surrounding rock comprises the deformation amount of the local area of the surrounding rock, the direction of the deformation of the surrounding rock and the danger level; the central control system is used for receiving the number analysis system, comparing an analysis result with a preset threshold value, and triggering the central control system to send an early warning instruction when the analysis result is greater than the preset threshold value; the information display system receives the early warning instruction and then displays the analysis result; the information acousto-optic warning system carries out early warning through an acousto-optic signal after receiving the early warning instruction; and the safety shielding device closes the tunnel entrance after receiving the early warning instruction.
1. The optical signal sensing device is mainly composed of a plurality of circles of concentric light sensing rings with different diameters, and the light sensing rings with different diameters can predict different deformation amounts of tunnel surrounding rocks. The sensing device can measure the micro deformation of a plurality of groups of surrounding rocks and can also be used as a real-time deformation monitoring system of a tunnel body.
2. The optical signal sensing device and the signal analysis system can accurately judge the area and the direction of the surrounding rock fault. And analyzing according to the acquired signals, and outputting the current danger level of tunnel surrounding rock deformation.
3. The invention provides a tunnel entrance provided with a current tunnel information display screen and a fault warning lamp. When the tunnel on the expressway breaks down, the driver can clearly see the continuously flashing warning lamp at a position far away from the tunnel in the high-speed running process of the vehicle. The driver reduces the speed of the vehicle, and the driving safety is ensured. And when the vehicle is close to the entrance of the tunnel at a low speed, the driver can have time to clearly see the tunnel operation information given on the electronic display screen.
4. The invention provides a mechanical safety shielding device which can execute tunnel closing action according to an instruction given by a central controller. And the distance value between the safety shielding device and the tunnel entrance accords with the relevant national standard, and the minimum safety distance required by vehicle deceleration can be ensured in the high-speed running process of the vehicle. In addition, the shielding rod is made of plastic, so that the vehicle cannot be damaged and secondary personal safety accidents cannot be endangered when the vehicle collides with the shielding rod under special conditions.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The utility model provides a tunnel country rock deformation on-line monitoring early warning system which characterized in that includes:
the signal acquisition system is used for acquiring information signals of local deformation of the tunnel surrounding rock and outputting the information signals;
the signal analysis system receives the information signal, analyzes the information signal to obtain an analysis result of the deformation of the local area of the tunnel surrounding rock and outputs the analysis result;
the analysis result of the deformation of the local area of the tunnel surrounding rock comprises the deformation amount of the local area of the surrounding rock, the direction of the deformation of the surrounding rock and the danger level;
the central control system is used for receiving the number analysis system, comparing an analysis result with a preset threshold value, and triggering the central control system to send an early warning instruction when the analysis result is greater than the preset threshold value;
the information display system receives the early warning instruction and then displays the analysis result;
the information acousto-optic warning system carries out early warning through an acousto-optic signal after receiving the early warning instruction;
and the safety shielding device closes the tunnel entrance after receiving the early warning instruction.
2. The tunnel surrounding rock deformation online monitoring and early warning system according to claim 1, characterized by further comprising a bracket (2), wherein the bracket (2) is arranged at a tunnel entrance.
3. The tunnel surrounding rock deformation online monitoring and early warning system as claimed in claim 2, wherein the signal acquisition system comprises a light beam generator (3) and a light signal sensing device (4), the light beam generator (3) is arranged on the bracket (2), the light beam generator (3) emits an invisible light beam from the entrance of the tunnel, and the light beam traverses the whole tunnel at the middle position of the top of the tunnel; the optical signal sensing device (4) is installed at the top of the tunnel, and the transmission path of the light beam just passes through the central position of the optical signal sensing device (4).
4. The on-line monitoring and early warning system for tunnel surrounding rock deformation as claimed in claim 3, wherein the optical signal sensing device (4) is composed of a plurality of circles of concentric light sensing rings with different diameters, and the light sensing rings with different diameters are used for predicting information signals of deformation of local areas of tunnel surrounding rocks; the number of the optical signal sensing devices (4) is at least one, and the installation number of the optical signal sensing devices (4) depends on the length of a monitored tunnel and the early warning precision range.
5. The tunnel surrounding rock deformation online monitoring and early warning system according to claim 3 or 4, characterized in that the optical signal sensing device (4) comprises a sensing head (7), a telescopic connecting rod (8) and a base (9), the sensing head (7) is fixed on the base (9) through the telescopic connecting rod (8), a fastening screw (13) is arranged on the telescopic connecting rod (8), two elongated through holes (10) are symmetrically arranged on the base (9), and the base (9) is fixed at the top of the tunnel through at least two bolts (11) passing through the two elongated through holes (10).
6. The system of claim 2, wherein the central control system is a control room, the control room is provided with a control platform, a controller is arranged in the control platform, and the controller is used for sending out an early warning instruction.
7. The tunnel surrounding rock deformation online monitoring and early warning system according to claim 6, characterized in that the information display system comprises an electronic display screen (5) arranged on the support (2) and a display screen arranged in the control room, when the electronic display screen (5) receives the early warning instruction, the current tunnel passing condition is displayed on the electronic display screen (5), and the vehicle passing through the tunnel is warned to prepare for avoiding danger, and meanwhile, the deformation amount of the local region deformation of the surrounding rock, the position of the surrounding rock deformation and the danger level are displayed on the display screen in the control room, so that tunnel managers are assisted to timely and accurately position the region where the tunnel fault is located, and pre-judge the tunnel safety condition and guide the repair of the tunnel fault region.
8. The tunnel surrounding rock deformation online monitoring and early warning system as claimed in claim 2, wherein the information acousto-optic warning system comprises a warning lamp (6) arranged on the support (2), and a fault warning lamp and a buzzer arranged on the control platform; when the central control system sends the early warning instruction, the control platform controls the fault prompting lamp to be turned on and the buzzer to be connected, tunnel managers are reminded to look over tunnel fault information through acousto-optic information, the auxiliary workers make corresponding reflection actions, meanwhile, the warning lamp (6) continuously flickers to remind the vehicles which do not enter the tunnel to decelerate, and information whether the current tunnel is in line with the traffic is displayed on the electronic display screen (5) or not is timely checked.
9. The system for on-line monitoring and early warning of deformation of tunnel surrounding rock according to claim 1, wherein the safety shielding device is arranged outside the tunnel entrance and has a certain safety distance with the tunnel entrance, the safety shielding device is a mechanical safety shielding device (1), and when the mechanical safety shielding device (1) receives the early warning command, a shielding rod (12) of the mechanical safety shielding device (1) moves downwards to close the tunnel passing authorization, so as to prevent a vehicle from entering.
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