CN108180885B - Automatic monitoring system and method for tunnel deformation - Google Patents
Automatic monitoring system and method for tunnel deformation Download PDFInfo
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- CN108180885B CN108180885B CN201810036958.4A CN201810036958A CN108180885B CN 108180885 B CN108180885 B CN 108180885B CN 201810036958 A CN201810036958 A CN 201810036958A CN 108180885 B CN108180885 B CN 108180885B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000003068 static effect Effects 0.000 claims abstract description 60
- 230000008859 change Effects 0.000 claims abstract description 43
- 238000004062 sedimentation Methods 0.000 claims abstract description 27
- 238000012806 monitoring device Methods 0.000 claims abstract description 17
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- 239000007788 liquid Substances 0.000 claims abstract description 5
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- 238000013461 design Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000002706 hydrostatic effect Effects 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses an automatic monitoring system for tunnel deformation, which comprises a main controller and a plurality of sub-monitoring devices arranged at the arch position of a tunnel, wherein the main controller is in communication connection with a terminal and a memory, the sub-monitoring devices comprise sub-controllers which are in communication connection with the main controller, a static level gauge and a triaxial accelerometer which are connected with the sub-controllers, the static level gauge is distributed at equal height, and liquid storage cylinders of the static level gauge are communicated through connecting pipes. The invention also discloses a tunnel deformation automatic monitoring method. The invention uses the static level gauge and the triaxial accelerometer to monitor the tunnel deformation, can provide early warning for construction, is convenient for workers to know the safety condition of the tunnel in real time, uses the observed value of the tunnel datum point as the datum value to calculate the sedimentation value and the inclination angle change value of the tunnel observed point, is convenient for analyzing the whole deformation condition of the tunnel, and has the advantages of convenient use and operation, strong practicability, good use effect and convenient popularization and use.
Description
Technical Field
The invention belongs to the technical field of tunnel monitoring, and particularly relates to an automatic tunnel deformation monitoring system and method.
Background
The safety monitoring of tunnels was analyzed and studied in China since the eighties of the last century. In the early 1988, the university of southwest traffic and the Guangzhou road agency together studied and formulated "temporary rules for assessment of the safety rating of Highway-operated tunnel lining" as a guiding specification for monitoring the safety of tunnels. In engineering monitoring, a method of manual detection is mainly adopted in recent years. Monitoring personnel periodically measure key points of the tunnel through detection instruments such as a total station, a level gauge, a convergence ruler and the like, report the obtained data to a tunnel management department, and periodically analyze the data by a tunnel management department organization expert to obtain damage information of the tunnel
Foreign countries are leading in terms of automatic safety monitoring of tunnels, some achievements have been achieved, but there are also some problems: for example, the sensor has lower repeated utilization rate, large system integration difficulty, longer system development period, large post maintenance engineering amount, low data precision and the like. Slightly behind this domestic aspect, the tunnel is basically also safely monitored by adopting a manual detection method. The following defects exist in the field of tunnel safety monitoring at home and abroad: (1) The real-time monitoring cannot be carried out, namely the real change of the vault settlement in the tunnel construction or operation process cannot be reflected in time. And (2) the construction interference is large. The monitoring process requires continuous instrument erection, so that the on-site construction is greatly disturbed. (3) Monitoring the danger of work, monitoring personnel usually need frequent approach to the construction site, has further increased the danger of monitoring work. (4) The monitoring cost is expensive, because the manual detection needs to measure the same section of the tunnel for multiple times, and the measurement is time-consuming and labor-consuming, so that the monitoring cost is high. (5) The measurement data is unreliable, and the error of the monitoring data is larger due to the artificial operation error in the process of multiple measurement.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides an automatic monitoring system and a monitoring method for tunnel deformation, which are simple in structure, reasonable in design, and good in use effect, are convenient for workers to know the safety condition of a tunnel in real time by monitoring tunnel deformation through a static level gauge and a triaxial accelerometer, and calculate the sedimentation value and the inclination angle change value of the observation point of the tunnel by taking the observation value of the tunnel reference point as a reference value, so that the integral deformation condition of the tunnel is convenient to analyze, and the system and the method are convenient to use and operate, strong in practicability, good in use effect and convenient to popularize and use.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a tunnel warp automatic monitoring system which characterized in that: the device comprises a main controller and a plurality of sub-monitoring devices arranged at the position of the tunnel arch, wherein the main controller is in communication connection with a terminal and a memory, the sub-monitoring devices comprise sub-controllers which are in communication connection with the main controller, and a static level gauge and a triaxial accelerometer which are connected with the sub-controllers, the static level gauge is arranged at equal heights, and liquid storage cylinders of the static level gauge are communicated through connecting pipes.
Foretell a tunnel warp automatic monitoring system, its characterized in that: the main controller is connected with a parameter input module, and the sub-controllers are connected with an audible and visual alarm module.
Foretell a tunnel warp automatic monitoring system, its characterized in that: the main controller is connected with a display.
Foretell a tunnel warp automatic monitoring system, its characterized in that: the terminal is a mobile phone, a tablet computer or an embedded data processing unit.
The invention discloses an automatic tunnel deformation monitoring method which is characterized by comprising the following steps of:
step one, installing a sub-monitoring device: setting a tunnel datum point and a tunnel observation point at the position of a tunnel arch, wherein the number of the tunnel datum point and the tunnel observation point is n, n is a positive integer not less than 3, sub-monitoring devices are arranged at the position of the tunnel datum point and the position of the tunnel observation point, a space rectangular coordinate system is built by taking a triaxial accelerometer as a center, and the directions are regulated;
step two, acquiring monitoring data of the sub-monitoring device: the static level installed at the position of the reference point of the tunnel obtains a tunnel settlement reference value, the obtained tunnel settlement reference value is transmitted to the main controller through the sub-controllers, and the main controller stores the received tunnel settlement reference value into the tunnel settlement reference value database I in the memory 11 ，Wherein->Indicating that the static level is at t i Tunnel sedimentation reference value collected at moment, +.>Indicating that the static level is at t j Tunnel settlement reference values collected at the moment, i=1, 2,..m, j=1, 2,..m, m is a positive integer not less than 2;
n static leveling instruments installed at positions of tunnel observation points respectively obtain tunnel settlement observationMeasuring values, transmitting the obtained tunnel settlement observed values to a main controller through a sub-controller, and storing the received tunnel settlement observed values into a tunnel settlement observed value database I in a memory by the main controller 21 ， Wherein->Indicating that the static level installed at the kth observation point position is at t i The tunnel sedimentation reference value acquired at the moment,indicating that the static level installed at the kth observation point position is at t j Tunnel sedimentation reference values collected at time, k=1, 2, n;
a triaxial accelerometer arranged at the position of a tunnel datum point acquires a tunnel inclination datum angle, the acquired tunnel inclination datum angle is transmitted to a main controller through a sub-controller, and the main controller stores the received tunnel inclination datum angle into a tunnel inclination datum angle database I in a memory 12 ， Wherein->Indicating that the static level is at t i Tunnel inclination reference angle acquired at moment +.>Indicating that the static level is at t j Tunnel inclination reference angles acquired at moment;
n number ofThe three-axis accelerometers arranged at the positions of the tunnel observation points respectively acquire tunnel inclination observation angles, the acquired tunnel inclination observation angles are transmitted to the main controller through the sub-controllers, and the main controller stores the received tunnel inclination observation angles into the tunnel inclination observation angle database I in the memory 22 ， Wherein->Representing at t a triaxial accelerometer mounted at a kth observation point position i Tunnel inclination observation angle acquired at moment, < +.>Representing at t a triaxial accelerometer mounted at a kth observation point position j Tunnel inclination observation angles acquired at any time;
step three, calculating tunnel deformation indexes: the tunnel deformation index comprises a tunnel sedimentation value and a tunnel inclination angle, and the concrete calculation process is as follows:
step 301, calculating a tunnel sedimentation value: the main controller is according to the formulaCalculating the sedimentation value +.>Wherein DeltaH i-j Indicating that the datum point is at t i From time to t j The value of the pressure change between the moments in time,indicating that the kth observation point is at t i From time to t j A pressure change value between moments;
step 302, calculating a tunnel inclination angle:the main controller is according to the formulaCalculating the inclination angle change value delta theta of the kth observation point relative to the reference point k-i-j Wherein Δθ i-j Indicating that the tunnel datum point is at t i From time to t j Inclination angle change value between moments, +.>Indicating that the kth tunnel observation point is at t i From time to t j A change in tilt angle between moments;
outputting tunnel deformation indexes: the main controller calculates the sedimentation value of the kth observation point relative to the reference point in the step threeAnd the inclination angle change value delta theta of the kth observation point relative to the reference point k-i-j Transmitting the deformation information to a terminal for display, repeating the first step to the third step, realizing automatic real-time monitoring of tunnel deformation, and continuously displaying through the terminal.
6. The method according to claim 5, wherein: in the first step, a space rectangular coordinate system established by taking the triaxial accelerometer as a center coincides with a ground rectangular coordinate system.
Compared with the prior art, the invention has the following advantages:
1. the invention has simple structure, reasonable design and convenient realization, use and operation.
2. According to the invention, the static leveling instrument and the triaxial accelerometer are used for monitoring tunnel deformation, the static leveling instrument is used for detecting the pressure value at the arch waist position of the tunnel in real time, and tunnel settlement deformation at the installation position of the static leveling instrument can be known according to the difference value of the pressure values detected by the same static leveling instrument at different moments, so that early warning can be provided for construction; the triaxial accelerometer is used for detecting inclination angles of the tunnel arch position in three axial directions of a space rectangular coordinate system, the inclination angles detected by the same triaxial accelerometer at different moments are compared, the deformation of the inclination angle of the tunnel at the installation position of the triaxial accelerometer can be known, workers can know the safety condition of the tunnel in real time, and potential safety hazards existing in the tunnel are checked in advance.
3. According to the invention, the tunnel datum point with the same height as the tunnel observation point is arranged at the tunnel arch position, the settlement value and the inclination angle change value of the tunnel observation point are calculated by taking the observation value of the tunnel datum point as the datum value, the settlement value of the tunnel whole is conveniently obtained by analyzing the settlement values of n observation points relative to the datum point, and the inclination angle change value of the tunnel whole is obtained by analyzing the inclination angle change values of n observation points relative to the datum point, so that the use effect is good.
In summary, the invention has simple structure and reasonable design, simultaneously uses the static level gauge and the triaxial accelerometer to monitor the tunnel deformation, can provide early warning for construction, is convenient for workers to know the safety condition of the tunnel in real time, uses the observation value of the tunnel datum point as the datum value to calculate the sedimentation value and the inclination angle change value of the tunnel observation point, is convenient for analyzing the whole deformation condition of the tunnel, and has convenient use and operation, strong practicability, good use effect and convenient popularization and use.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
Fig. 1 is a schematic block diagram of a tunnel deformation automatic monitoring system according to the present invention.
Fig. 2 is a flow chart of the method of the present invention.
Reference numerals illustrate:
1-a main controller; 2-terminal; 3-memory;
4-a sub-controller; 5-a static level gauge; 6-a triaxial accelerometer;
7-a display; 8-an audible and visual alarm module; 9-parameter input module.
Detailed Description
As shown in fig. 1, the automatic tunnel deformation monitoring system comprises a main controller 1 and a plurality of sub-monitoring devices arranged at the arch position of a tunnel, wherein the main controller 1 is in communication connection with a terminal 2 and a memory 3, the sub-monitoring devices comprise a sub-controller 4 which is in communication connection with the main controller 1, a static level 5 and a triaxial accelerometer 6 which are connected with the sub-controller 4, a plurality of static levels 5 are distributed at equal heights, and liquid storage cylinders of the static levels 5 are communicated through connecting pipes.
When in actual use, the static leveling instrument 5 is used for detecting the pressure value at the position of the tunnel arch in real time, and transmitting the pressure value detected by the static leveling instrument 5 in real time to the sub-controller 4, the sub-controller 4 transmits the pressure value detected by the static leveling instrument 5 in real time to the main controller 1, and the main controller 1 stores the pressure value detected by the static leveling instrument 5 in real time in the memory 3, so that the personnel can conveniently call and check. The staff can learn the tunnel settlement deformation of the installation position of the static level 5 by comparing the pressure values detected by the same static level 5 at different moments, the positive value of the pressure change value indicates the foundation settlement of the installation position of the static level 5, the negative value of the pressure change value indicates the foundation elevation of the installation position of the static level 5, and the early warning can be provided for construction.
In actual use, the triaxial accelerometer 6 is used for detecting the inclination angles of the tunnel arched position in three axial directions of a space rectangular coordinate system, and the inclination angles detected by the triaxial accelerometer 6 in real time are transmitted to the sub-controller 4, the sub-controller 4 transmits the inclination angles detected by the triaxial accelerometer 6 in real time to the main controller 1, and the main controller 1 stores the inclination angles detected by the triaxial accelerometer 6 in real time in the memory 3, so that the operator can conveniently call and check the inclination angles. The staff compares the inclination angles detected by the same triaxial accelerometer 6 at different moments, so that the deformation of the inclination angle of the tunnel at the installation position of the triaxial accelerometer 6 can be known, the staff can know the safety condition of the tunnel in real time, and the potential safety hazard existing in the tunnel is checked in advance.
In this embodiment, as shown in fig. 1, the main controller 1 is connected with a parameter input module 9, and the sub-controller 4 is connected with an audible and visual alarm module 8.
In actual use, the pressure threshold value and the inclination angle threshold value are input through the parameter input module 9, and when the pressure value detected by the static level gauge 5 in real time is larger than the pressure threshold value or the inclination angle detected by the triaxial accelerometer 6 in real time is larger than the inclination angle threshold value, the main controller 4 sends a control signal to the sub-controller 4, the sub-controller 4 sends the control signal to the audible and visual alarm module 8, the audible and visual alarm module 8 alarms, and construction personnel in a tunnel are reminded to evacuate in time or effective means are adopted.
As shown in fig. 1, in this embodiment, a display 7 is connected to the main controller 1.
In actual use, the main controller 1 displays the inclination angle detected by the triaxial accelerometer 6 transmitted by the sub-controller 4 in real time and the pressure value detected by the static level 5 in real time through the display 7, so that the real-time perception of staff is facilitated.
In this embodiment, the terminal 2 is a mobile phone, a tablet computer or an embedded data processing unit.
When in actual use, the mobile phone and the tablet personal computer can move along with the staff, the flexibility is good, the mobile phone or the tablet personal computer can communicate with the main controller 1 by adopting a 3G network, a 4G network or a wifi network, the construction early warning range is improved, and the use effect is good.
As shown in fig. 2, the automatic tunnel deformation monitoring method of the invention comprises the following steps:
step one, installing a sub-monitoring device: setting a tunnel datum point and a tunnel observation point at the tunnel arch position, wherein the tunnel datum point and the tunnel observation point are arranged at equal heights, the number of the tunnel observation points is n, n is a positive integer not less than 3, sub-monitoring devices are arranged at the tunnel datum point position and the tunnel observation point position, a space rectangular coordinate system is established by taking the triaxial accelerometer 6 as the center, and the direction is regulated.
In actual use, the space rectangular coordinate system established by taking the triaxial accelerometer 6 as a center coincides with the ground rectangular coordinate system.
Step two, acquiring monitoring data of the sub-monitoring device: a static level 5 installed at the position of the reference point of the tunnel acquires a reference value of the tunnel settlement, and transmits the acquired reference value of the tunnel settlement to the sub-controller 4A main controller 1, wherein the main controller 1 stores the received tunnel settlement reference value into a tunnel settlement reference value database I in a memory 3 11 ，Wherein->Indicating that the static level 5 is at t i Tunnel sedimentation reference value collected at moment, +.>Indicating that the static level 5 is at t j Tunnel settlement reference values collected at the moment, i=1, 2,..m, j=1, 2,..m, m is a positive integer not less than 2; n static leveling instruments 5 arranged at the positions of the tunnel observation points respectively acquire tunnel settlement observation values, the acquired tunnel settlement observation values are transmitted to the main controller 1 through the sub-controllers 4, and the main controller 1 stores the received tunnel settlement observation values into a tunnel settlement observation value database I in the memory 3 21 ，/> Wherein->At t, the static level 5 mounted at the kth observation point position is shown i Tunnel sedimentation reference value collected at moment, +.>At t, the static level 5 mounted at the kth observation point position is shown j Tunnel sedimentation reference values collected at time, k=1, 2, n; a triaxial accelerometer 6 installed at a position of a tunnel reference point acquires a tunnel inclination reference angle and transmits the acquired tunnel inclination reference angle to the main controller 1 through the sub-controller 4, and the main controller 1 transmits the received tunnel inclination reference angle to the main controller 1Tunnel inclination reference angle database I storing tunnel inclination reference angles in memory 3 12 ，/> Wherein->Indicating that the static level 5 is at t i Tunnel inclination reference angle acquired at moment +.>Indicating that the static level 5 is at t j Tunnel inclination reference angles acquired at moment; n triaxial accelerometers 6 installed at the positions of the tunnel observation points respectively acquire tunnel inclination observation angles, the acquired tunnel inclination observation angles are transmitted to the main controller 1 through the sub-controllers 4, and the main controller 1 stores the received tunnel inclination observation angles into a tunnel inclination observation angle database I in the memory 3 22 ，/> Wherein the method comprises the steps ofRepresenting at t a triaxial accelerometer 6 mounted at the kth observation point position i The tunnel inclination observation angle acquired at the moment,representing at t a triaxial accelerometer 6 mounted at the kth observation point position j Tunnel inclination observation angle acquired at any time.
Step three, calculating tunnel deformation indexes: the tunnel deformation index comprises a tunnel sedimentation value and a tunnel inclination angle, and the concrete calculation process is as follows:
step 301, calculating a tunnel sedimentation value: the main controller 4 is according to the formulaCalculating the sedimentation value +.>Wherein DeltaH i-j Indicating that the datum point is at t i From time to t j The value of the pressure change between the moments in time,indicating that the kth observation point is at t i From time to t j A pressure change value between moments.
Step 302, calculating a tunnel inclination angle: the main controller 4 is according to the formulaCalculating the inclination angle change value delta theta of the kth observation point relative to the reference point k-i-j Wherein Δθ i-j Indicating that the tunnel datum point is at t i From time to t j Inclination angle change value between moments, +.>Indicating that the kth tunnel observation point is at t i From time to t j The value of the change in inclination between moments.
In actual use, since the reservoirs of the plurality of hydrostatic levels 5 are communicated by the connecting pipe, when the tunnel subsides, the float positions in the reservoirs of the plurality of hydrostatic levels 5 synchronously change with the tunnel subsidence, so that the tunnel reference point is at t i From time to t j The pressure change value between the moments and the kth observation point at t i From time to t j The difference value between the pressure change values between the moments is used as the sedimentation value of the kth observation point relative to the reference point, the sedimentation value of the n observation points relative to the reference point is conveniently analyzed, so that the sedimentation amount of the whole tunnel is obtained, and the use effect is good.
Tunnel referenceAt point t i From time to t j The inclination angle change value between the moments and the observation point of the kth tunnel at t i From time to t j The difference value between the inclination angle change values between the moments is used as the inclination angle change value of the kth observation point relative to the reference point, the reference values of the n tunnel observation points are the same, the inclination angle change values of the n observation points relative to the reference point are conveniently analyzed, so that the whole inclination angle change value of the tunnel is obtained, and the use effect is good.
Outputting tunnel deformation indexes: the main controller 4 calculates the sedimentation value of the kth observation point relative to the reference point in the third stepAnd the inclination angle change value delta theta of the kth observation point relative to the reference point k-i-j Transmitting the signal to the terminal 2 for display, repeating the first to third steps, realizing automatic real-time monitoring of tunnel deformation, and continuously displaying through the terminal 2.
The foregoing is merely an embodiment of the present invention, and the present invention is not limited thereto, and any simple modification, variation and equivalent structural changes made to the foregoing embodiment according to the technical matter of the present invention still fall within the scope of the technical solution of the present invention.
Claims (2)
1. A method for automatically monitoring tunnel deformation by using a tunnel deformation automatic monitoring system is characterized in that: the tunnel deformation automatic monitoring system comprises a main controller (1) and a plurality of sub-monitoring devices arranged at the arch position of a tunnel, wherein the main controller (1) is in communication connection with a terminal (2) and a memory (3), the sub-monitoring devices comprise sub-controllers (4) which are in communication connection with the main controller (1), a static level gauge (5) and a triaxial accelerometer (6) which are connected with the sub-controllers (4), a plurality of static level gauges (5) are distributed at equal heights, and liquid storage cylinders of the static level gauges (5) are communicated through connecting pipes;
the main controller (1) is connected with a parameter input module (9), and the sub-controller (4) is connected with an audible and visual alarm module (8);
the main controller (1) is connected with a display (7);
the static leveling instrument (5) is used for detecting the pressure value at the arch position of the tunnel in real time, transmitting the pressure value detected by the static leveling instrument (5) in real time to the sub-controller (4), transmitting the pressure value detected by the static leveling instrument (5) in real time to the main controller (1) by the sub-controller (4), and storing the pressure value detected by the static leveling instrument (5) in the memory (3) by the main controller (1), so that the personnel can conveniently call and check;
the three-axis accelerometer (6) is used for detecting the inclination angles of the tunnel arch position in three axial directions of a space rectangular coordinate system, the inclination angles detected by the three-axis accelerometer (6) in real time are transmitted to the sub-controller (4), the sub-controller (4) transmits the inclination angles detected by the three-axis accelerometer (6) to the main controller (1), and the main controller (1) stores the inclination angles detected by the three-axis accelerometer (6) in real time in the memory (3), so that the three-axis accelerometer is convenient for a worker to call and check;
the parameter input module (9) inputs a pressure threshold value and an inclination angle threshold value, when the pressure value detected by the static level gauge (5) in real time is larger than the pressure threshold value or the inclination angle detected by the triaxial accelerometer (6) in real time is larger than the inclination angle threshold value, the main controller (1) sends a control signal to the sub-controller (4), the sub-controller (4) sends the control signal to the audible and visual alarm module (8), and the audible and visual alarm module (8) alarms;
the method comprises the following steps:
step one, installing a sub-monitoring device: setting a tunnel datum point and a tunnel observation point at the position of a tunnel arch, wherein the number of the tunnel datum point and the tunnel observation point is n, n is a positive integer not less than 3, sub-monitoring devices are arranged at the position of the tunnel datum point and the position of the tunnel observation point, a space rectangular coordinate system is established by taking a triaxial accelerometer (6) as a center, and the directions are regulated;
step two, acquiring monitoring data of the sub-monitoring device: a static level (5) arranged at the position of a tunnel datum point acquires a tunnel settlement datum value, the acquired tunnel settlement datum value is transmitted to a main controller (1) through a sub-controller (4), and the main controller (1) stores the received tunnel settlement datum valueTunnel settlement reference value database I in memory (3) 11 ， Wherein->Indicating the static level (5) at t i Tunnel sedimentation reference value collected at moment, +.>Indicating the static level (5) at t j Tunnel settlement reference values collected at the moment, i=1, 2,..m, j=1, 2,..m, m is a positive integer not less than 2;
n static leveling instruments (5) arranged at the positions of the tunnel observation points respectively acquire tunnel settlement observation values, the acquired tunnel settlement observation values are transmitted to a main controller (1) through a sub-controller (4), and the main controller (1) stores the received tunnel settlement observation values into a tunnel settlement observation value database I in a memory (3) 21 ，Wherein->Indicating at t the static level (5) mounted at the kth observation point position i Tunnel sedimentation reference value collected at moment, +.>Indicating at t the static level (5) mounted at the kth observation point position j Tunnel sedimentation reference values collected at time, k=1, 2, n;
a triaxial accelerometer (6) arranged at the position of a tunnel datum point acquires a tunnel inclination datum angle and transmits the acquired tunnel inclination datum angle to a main controller (1) through a sub-controller (4), and the main controllerThe controller (1) stores the received tunnel inclination reference angle in a tunnel inclination reference angle database I in a memory (3) 12 ，Wherein the method comprises the steps ofIndicating the static level (5) at t i Tunnel inclination reference angle acquired at moment +.>Indicating the static level (5) at t j Tunnel inclination reference angles acquired at moment;
n triaxial accelerometers (6) arranged at the positions of the tunnel observation points respectively acquire tunnel inclination observation angles, the acquired tunnel inclination observation angles are transmitted to a main controller (1) through a sub-controller (4), and the main controller (1) stores the received tunnel inclination observation angles into a tunnel inclination observation angle database I in a memory (3) 22 ，Wherein->Representing at t a triaxial accelerometer (6) mounted at the kth observation point position i Tunnel inclination observation angle acquired at moment, < +.>Representing at t a triaxial accelerometer (6) mounted at the kth observation point position j Tunnel inclination observation angles acquired at any time;
step three, calculating tunnel deformation indexes: the tunnel deformation index comprises a tunnel sedimentation value and a tunnel inclination angle, and the concrete calculation process is as follows:
step 301, calculating a tunnel sedimentation value: the main controller (1) is used for controlling the operation according to the formulaCalculating the sedimentation value +.>Wherein DeltaH i-j Indicating that the datum point is at t i From time to t j The value of the pressure change between the moments in time,indicating that the kth observation point is at t i From time to t j A pressure change value between moments;
step 302, calculating a tunnel inclination angle: the main controller (1) is used for controlling the operation according to the formulaCalculating the inclination angle change value delta theta of the kth observation point relative to the reference point k-i-j Wherein Δθ i-j Indicating that the tunnel datum point is at t i From time to t j Inclination angle change value between moments, +.>Indicating that the kth tunnel observation point is at t i From time to t j A change in tilt angle between moments;
outputting tunnel deformation indexes: the main controller (1) calculates the sedimentation value of the kth observation point relative to the reference point in the step threeAnd the inclination angle change value delta theta of the kth observation point relative to the reference point k-i-j Transmitting the deformation information to a terminal (2) for display, repeating the first to third steps, realizing automatic real-time monitoring of tunnel deformation, and continuously displaying through the terminal (2);
when the tunnel subsides, the positions of floats in the liquid storage cylinders of the static leveling instruments (5) synchronously change along with the tunnel subsidence, and the difference value between the pressure change value of the tunnel datum point from the time ti to the time tj and the pressure change value of the kth observation point from the time ti to the time tj is taken as the subsidence value of the kth observation point relative to the datum point, so that the subsidence value of the whole tunnel is conveniently obtained by analyzing the subsidence values of n observation points relative to the datum point;
the difference value between the inclination angle change value of the tunnel datum point from the ti moment to the tj moment and the inclination angle change value of the kth tunnel observation point from the ti moment to the tj moment is used as the inclination angle change value of the kth observation point relative to the datum point, the reference values of the n tunnel observation points are the same, and the inclination angle change value of the n observation points relative to the datum point is conveniently analyzed to obtain the whole inclination angle change value of the tunnel;
in the first step, a space rectangular coordinate system which is established by taking the triaxial accelerometer (6) as a center is coincident with a ground rectangular coordinate system.
2. A method for automatic monitoring of tunnel deformation using an automatic tunnel deformation monitoring system as claimed in claim 1, wherein: the terminal (2) is a mobile phone, a tablet computer or an embedded data processing unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810036958.4A CN108180885B (en) | 2018-01-15 | 2018-01-15 | Automatic monitoring system and method for tunnel deformation |
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| CN109100735A (en) * | 2018-09-28 | 2018-12-28 | 辽宁工程技术大学 | A kind of subway tunnel deformation monitoring system and method |
| CN110035403A (en) * | 2019-03-26 | 2019-07-19 | 华思（广州）测控科技有限公司 | A kind of wireless networking single point extensometer monitoring device and method |
| CN111765865A (en) * | 2020-07-29 | 2020-10-13 | 中铁上海工程局集团有限公司 | Tunnel automation monitoring system |
| CN112082595B (en) * | 2020-08-07 | 2022-06-21 | 厦门万宾科技有限公司 | Multi-degree-of-freedom micro-vibration diagnosis method and sensing terminal |
| CN112461193A (en) * | 2020-09-30 | 2021-03-09 | 北京工业大学 | Automatic vault settlement monitoring system for stepped excavation of drilled and exploded tunnel |
| CN113137945A (en) * | 2021-03-01 | 2021-07-20 | 苏交科集团股份有限公司 | Tunnel segment deformation monitoring sensor arrangement method and monitoring system |
| CN117346723A (en) * | 2021-10-19 | 2024-01-05 | 郑州大学 | Vehicle-mounted track curvature data full-line detection device |
| CN114061535B (en) * | 2021-11-15 | 2022-09-13 | 北京环安工程检测有限责任公司 | Subway tunnel automatic deformation monitoring method and device based on MEMS |
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