CN110455211A - A kind of automatic monitoring measurement method based on laser section ranging - Google Patents
A kind of automatic monitoring measurement method based on laser section ranging Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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Abstract
The present invention provides a kind of automatic monitoring measurement method based on laser section ranging, comprising: installs left monitoring measurement equipment in the left side haunch position of selected tunnel monitoring measurement section；Right monitoring measurement equipment is installed in the right side haunch position of selected tunnel monitoring measurement section；Control the initial monitoring measurement parameter of host setting, comprising: survey line interval angles A, survey line quantity n and monitoring measurement time interval Δ t；The initial time in period, left monitoring measurement equipment M emission level survey line to the right are measured in current monitor；Right monitoring measurement equipment N emission level survey line to the left；Whenever completing a monitoring measurement period, survey line length is uploaded to control host；Control the deformation of Framework computing tunnel monitoring section.Advantage are as follows: operational method measurement is simple, does not influence Tunnel Construction Schedule, comprehensively, the features such as can carrying out data wireless transmission, improve data feedback efficiency, this method has very strong realistic meaning and applicability to the acquisition of monitoring section data.
Description
Technical field
The invention belongs to Tunnel Engineering construction technique fields, and in particular to a kind of automatic monitoring based on laser section ranging
Method for measurement.
Background technique
Tunnel monitoring measurement is one of the three big elements of New Austrian Tunneling Method construction, and constructing tunnel passes through monitoring measurement as a result, carrying out
Information-aided construction maximally utilises country rock self-supporting, so that constructing tunnel be made to be among Dynamic Management System.Monitoring
The purpose of measurement is to country rock and Supporting Structure deformation state during constructing tunnel, by tunnel arch top settlement and week
Side convergence is monitored, and is understood the development trend of tunnel surrounding and Support Deformation accordingly, is judged to surrounding rock stability, is tunnel
Road construction provides foundation.
Tunnel monitoring measurement work at present mainly by measuring instruments such as convergence gauge and levels, is encircleed to tunnel is mounted on
Built-in fitting at waist, vault measuring point is measured.Such tunnel monitoring measurement method has the problem that (1) is cumbersome；
(2) monitoring measurement work must follow up in real time during constructing tunnel, and measuring point is laid and daily monitoring measurement work influence tunnel
Construction speed is made simultaneously because built-in fitting may be destroyed in concrete there are the construction of more big machinery in constructing tunnel
At measurement data mistake；(3) monitoring measurement delta data is that the most intuitive of tunnel surrounding support system variation embodies, monitoring parameter
It is poor to survey result feedback timeliness, be difficult to timely feedback to design side, construction party, proprietor etc., thus can not be in constructing tunnel
Follow up tunnel monitoring measurement in time in the process, and then can not timely and effectively instruct constructing tunnel.
Summary of the invention
In view of the defects existing in the prior art, the present invention provides a kind of automatic monitoring measurement side based on laser section ranging
Method can effectively solve the above problems.
The technical solution adopted by the invention is as follows:
The present invention provides a kind of automatic monitoring measurement method based on laser section ranging, comprising the following steps:
Step 1, tunnel monitoring measurement section is selected；Obtain the prearrangement of deformation amount magnitude of the tunnel monitoring measurement section；
Step 2, left monitoring measurement equipment M is installed in the left side haunch position of the selected tunnel monitoring measurement section；
Right monitoring measurement equipment N is installed in the right side haunch position of the selected tunnel monitoring measurement section；Left monitoring measurement equipment M
It is connect with control main-machine communication with right monitoring measurement equipment N；
Step 3, the initial monitoring measurement parameter of control host setting, comprising: survey line interval angles A, survey line quantity n and
Monitoring measurement time interval Δ t；
Step 4, the initial time in period, left monitoring measurement equipment M emission level survey line to the right are measured in current monitor；It is right
Monitoring measurement equipment N emission level survey line to the left；
Step 5, then, current monitor measures after the period starts, and for left monitoring measurement equipment M, emits water to the right with it
Flat survey line is then initial survey line rotates counterclockwise survey line interval angles A first, and thus tunnel half range emits the 1st article to the right
Left survey line Y1, and record the 1st article of left survey line Y1Survey line length L '1And time of measuring t '1；Then, when reaching monitoring measurement
Between after interval of delta t, then with the 1st article of left survey line Y1For initial survey line, survey line interval angles A is rotated counterclockwise, thus tunnel to the right
Road half range emits the 2nd article of left survey line Y2, and record the 2nd article of left survey line Y2Survey line length L '2And time of measuring t '2；Class according to this
It pushes away, until with (n-1)th left survey line Yn-1For initial survey line, survey line interval angles A is rotated counterclockwise, thus tunnel half to the right
Width emits the left survey line Y of nthn, and record the left survey line Y of nthnSurvey line length L 'nAnd time of measuring t 'n；Then, make a left side
Monitoring measurement equipment M resets, it may be assumed that so that it is rotated clockwise the angle of A*n, makes its emission level survey line to the right；
Likewise, with it, emission level survey line is then, suitable first for initial survey line to the left for right monitoring measurement equipment N
Hour hands rotate survey line interval angles A, and thus tunnel half range emits the 1st article of right survey line Z to the left1, and record the 1st article of right survey line Z1
Survey line length L1And time of measuring t1；Then, after reaching monitoring measurement time interval Δ t, then with the 1st article of right survey line Z1
For initial survey line, survey line interval angles A is rotated clockwise, thus tunnel half range emits the 2nd article of right survey line Z to the left2, and record
2nd article of right survey line Z2Survey line length L2And time of measuring t2；The rest may be inferred, until with (n-1)th right survey line Zn-1It is initial
Survey line rotates clockwise survey line interval angles A, and thus tunnel half range emits the right survey line Z of nth to the leftn, and record nth
Right survey line ZnSurvey line length LnAnd time of measuring tn；Then, reset right monitoring measurement equipment N, it may be assumed that turn it counterclockwise
The angle of dynamic A*n, makes its emission level survey line to the left；
Step 6, a monitoring measurement period is so far completed；After reaching periodic intervals, start next monitoring measurement
The monitoring measurement in period operates；
Whenever completing a monitoring measurement period, the left monitoring measurement equipment M is by the 1st article of left survey line Y1Survey line length
L’1And time of measuring t '1, the 2nd article of left survey line Y2Survey line length L '2And time of measuring t '2..., the left survey line Y of nthn
Survey line length L 'nAnd time of measuring t 'nIt is uploaded to control host；
Likewise, the right monitoring measurement equipment N is by the 1st article of right survey line Z1Survey line length L1And time of measuring t1,
2 right survey line Z2Survey line length L2And time of measuring t2..., the right survey line Z of nthnSurvey line length LnAnd time of measuring
tnIt is uploaded to control host；
Step 7, the control host calculates the deformation of tunnel monitoring section using following methods:
Step 7.1, the control host establishes rectangular coordinate system, wherein left monitoring measurement equipment M and right monitoring measurement are set
The line of standby N is x-axis, and left monitoring measurement equipment M point is coordinate origin；Therefore, the coordinate of left monitoring measurement equipment M is
(0,0), the coordinate of right monitoring measurement equipment N are (a, 0)；
Step 7.2, the 1st article of left survey line Y1Starting point coordinate be (0,0), if its terminal point coordinate be P1(x1', y1′)；
2nd article of left survey line Y2Starting point coordinate be (0,0), if its terminal point coordinate be P2(x2', y2′)；
The rest may be inferred
The left survey line Y of nthnStarting point coordinate be (0,0), if its terminal point coordinate be Pn(xn', yn′)；
1st article of right survey line Z1Starting point coordinate be (a, 0), if its terminal point coordinate be Q1(x1, y1)；
2nd article of right survey line Z2Starting point coordinate be (a, 0), if its terminal point coordinate be Q2(x2, y2)；
The rest may be inferred
The right survey line Z of nthnStarting point coordinate be (a, 0), if its terminal point coordinate be Qn(xn, yn)；
Step 7.3, it is calculated by the following formula the terminal point coordinate of each survey line:
(1) for each monitoring point in right side tunnel half range
For P1(x1', y1'), x1'=a-L1' cos A, y1'=L1′sin A
For P2(x2', y2'), x2'=a-L2' cos 2A, y2'=L2′sin 2A
The rest may be inferred
For Pn(xn', yn'), xn'=a-Ln' cos nA, yn'=Ln′sin nA
(2) for each monitoring point in left side tunnel half range
For Q1(x1, y1), x1=L1CosA, y1=L1 sinA
For Q2(x2, y2), x2=L2Cos 2A, y2=L2 sin 2A
The rest may be inferred
For Qn(xn, yn), xn=LnCos nA, yn=Ln sin nA
Step 7.4, according to each prison in each monitoring point coordinate and right side tunnel half range in left side tunnel half range
Measuring point coordinate, fitting obtain tunnel monitoring cross section shape；
Step 7.5, the tunnel monitoring cross section shape of the tunnel monitoring cross section shape and initial period that this cycle monitoring are obtained
Shape compares, to obtain the deflection of tunnel monitoring cross section；
Step 7.6, whether the deflection for the tunnel monitoring cross section that judgment step 7.5 obtains is less than the reserved of step 1 determination
Deformation value, if it is less, continuing the monitoring of next monitoring cycle；If it is not, then issuing monitoring, alarming information.
Preferably, the left monitoring measurement equipment M and the right monitoring measurement equipment N include laser range finder, can determine
Angle rotary shaft and driving motor；The laser range finder determines angle rotation under the driving of the driving motor, around described
Shaft rotation.
A kind of automatic monitoring measurement method based on laser section ranging provided by the invention has the advantage that
Detailed description of the invention
Fig. 1 is a kind of acquisition schematic diagram of the automatic monitoring measurement method based on laser section ranging provided by the invention；
Fig. 2 is a kind of schematic diagram of the automatic monitoring measurement method based on laser section ranging provided by the invention；
Fig. 3 is a kind of monitoring point coordinate of the automatic monitoring measurement method based on laser section ranging point provided by the invention
Butut.
Wherein:
1 represents left monitoring measurement equipment M；2 represent right monitoring measurement equipment N；
3 represent tunnel monitoring measurement section design section；4 represent tunnel monitoring measurement section deformation allowance；5 represent in fact
Border tunnel monitoring measurement section；6 represent laser survey line rotation angle degree；Z1~Z5 --- right monitoring measurement equipment survey line；Y1~
Y5 --- left monitoring measurement equipment survey line.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein only to
It explains the present invention, is not intended to limit the present invention.
For current tunnel monitoring measurement operation, cumbersome, j ob impact construction speed, real-time process are easily monitored
The deficiencies of point destroys, monitoring section data collection capacity is low, data feedback low efficiency, the present invention provide a kind of based on the survey of laser section
Away from automatic monitoring measurement method, belong to Tunnel Engineering construction field, be suitable for tunnel construction and operation phase tunnel wall rock deformation
The monitoring of situation can comprehensively be monitored monitoring section, embody the situation of change of tunnel monitoring section comprehensively, have data
The characteristics of automatic and real-time monitoring, monitoring accuracy is high and intelligent measure is analyzed.In addition, operational method measurement is simple, no
Tunnel Construction Schedule is influenced, the acquisition of monitoring section data comprehensively, can carry out data wireless transmission, improve the spies such as data feedback efficiency
Point, this method have very strong realistic meaning and applicability.
With reference to Fig. 1-Fig. 3, the automatic monitoring measurement method based on laser section ranging, comprising the following steps:
Step 1, tunnel monitoring measurement section is selected；Obtain the prearrangement of deformation amount magnitude of the tunnel monitoring measurement section；
Step 2, left monitoring measurement equipment M is installed in the left side haunch position of the selected tunnel monitoring measurement section；
Right monitoring measurement equipment N is installed in the right side haunch position of the selected tunnel monitoring measurement section；Left monitoring measurement equipment M
It is connect with control main-machine communication with right monitoring measurement equipment N；The left monitoring measurement equipment M and the right monitoring measurement equipment
N includes laser range finder, can determine angle rotary shaft and driving motor；Drive of the laser range finder in the driving motor
Under dynamic, the rotation of angle rotary shaft is determined around described.
Step 3, the initial monitoring measurement parameter of control host setting, comprising: survey line interval angles A, survey line quantity n and
Monitoring measurement time interval Δ t；
Step 4, the initial time in period, left monitoring measurement equipment M emission level survey line to the right are measured in current monitor；It is right
Monitoring measurement equipment N emission level survey line to the left；
Step 5, then, current monitor measures after the period starts, and for left monitoring measurement equipment M, emits water to the right with it
Flat survey line is then initial survey line rotates counterclockwise survey line interval angles A first, and thus tunnel half range emits the 1st article to the right
Left survey line Y1, and record the 1st article of left survey line Y1Survey line length L '1And time of measuring t '1；Then, when reaching monitoring measurement
Between after interval of delta t, then with the 1st article of left survey line Y1For initial survey line, survey line interval angles A is rotated counterclockwise, thus tunnel to the right
Road half range emits the 2nd article of left survey line Y2, and record the 2nd article of left survey line Y2Survey line length L '2And time of measuring t '2；Class according to this
It pushes away, until with (n-1)th left survey line Yn-1For initial survey line, survey line interval angles A is rotated counterclockwise, thus tunnel half to the right
Width emits the left survey line Y of nthn, and record the left survey line Y of nthnSurvey line length L 'nAnd time of measuring t 'n；Then, make a left side
Monitoring measurement equipment M resets, it may be assumed that so that it is rotated clockwise the angle of A*n, makes its emission level survey line to the right；
Likewise, with it, emission level survey line is then, suitable first for initial survey line to the left for right monitoring measurement equipment N
Hour hands rotate survey line interval angles A, and thus tunnel half range emits the 1st article of right survey line Z to the left1, and record the 1st article of right survey line Z1
Survey line length L1And time of measuring t1；Then, after reaching monitoring measurement time interval Δ t, then with the 1st article of right survey line Z1
For initial survey line, survey line interval angles A is rotated clockwise, thus tunnel half range emits the 2nd article of right survey line Z to the left2, and record
2nd article of right survey line Z2Survey line length L2And time of measuring t2；The rest may be inferred, until with (n-1)th right survey line Zn-1It is initial
Survey line rotates clockwise survey line interval angles A, and thus tunnel half range emits the right survey line Z of nth to the leftn, and record nth
Right survey line ZnSurvey line length LnAnd time of measuring tn；Then, reset right monitoring measurement equipment N, it may be assumed that turn it counterclockwise
The angle of dynamic A*n, makes its emission level survey line to the left；
Following table parameter value is obtained for emitting 5 surveys line for left monitoring measurement equipment M:
| Survey line serial number | Survey line length | Survey line interval angles | Crossline angle |
| Y1 | L1’ | A° | 1A° |
| Y2 | L2’ | A° | 2A° |
| Y3 | L3’ | A° | 3A° |
| Y4 | L4’ | A° | 4A° |
| Y5 | L5’ | A° | 5A° |
Following table parameter value is obtained for emitting 5 surveys line for right monitoring measurement equipment N:
| Survey line serial number | Survey line length | Survey line interval angles | Crossline angle |
| Z1 | L1 | A° | A° |
| Z2 | L2 | A° | 2A° |
| Z3 | L3 | A° | 3A° |
| Z4 | L4 | A° | 4A° |
| Z5 | L5 | A° | 5A° |
Step 6, a monitoring measurement period is so far completed；After reaching periodic intervals, start next monitoring measurement
The monitoring measurement in period operates；
Whenever completing a monitoring measurement period, the left monitoring measurement equipment M is by the 1st article of left survey line Y1Survey line length
L’1And time of measuring t '1, the 2nd article of left survey line Y2Survey line length L '2And time of measuring t '2..., the left survey line Y of nthn
Survey line length L 'nAnd time of measuring t 'nIt is uploaded to control host；
Likewise, the right monitoring measurement equipment N is by the 1st article of right survey line Z1Survey line length L1And time of measuring t1,
2 right survey line Z2Survey line length L2And time of measuring t2..., the right survey line Z of nthnSurvey line length LnAnd time of measuring
tnIt is uploaded to control host；
Step 7, the control host carries out measuring point coordinate conversion according to survey line length and crossline angle.Specifically using following
The deformation of method calculating tunnel monitoring section:
Step 7.1, the control host establishes rectangular coordinate system, wherein left monitoring measurement equipment M and right monitoring measurement are set
The line of standby N is x-axis, and left monitoring measurement equipment M point is coordinate origin；Therefore, the coordinate of left monitoring measurement equipment M is
(0,0), the coordinate of right monitoring measurement equipment N are (a, 0)；
Step 7.2, the 1st article of left survey line Y1Starting point coordinate be (0,0), if its terminal point coordinate be P1(x1', y1′)；
2nd article of left survey line Y2Starting point coordinate be (0,0), if its terminal point coordinate be P2(x2', y2′)；
The rest may be inferred
The left survey line Y of nthnStarting point coordinate be (0,0), if its terminal point coordinate be Pn(xn', yn′)；
1st article of right survey line Z1Starting point coordinate be (a, 0), if its terminal point coordinate be Q1(x1, y1)；
2nd article of right survey line Z2Starting point coordinate be (a, 0), if its terminal point coordinate be Q2(x2, y2)；
The rest may be inferred
The right survey line Z of nthnStarting point coordinate be (a, 0), if its terminal point coordinate be Qn(xn, yn)；
Step 7.3, it is calculated by the following formula the terminal point coordinate of each survey line:
(1) for each monitoring point in right side tunnel half range
For P1(x1', y1'), x1'=a-L1' cos A, y1'=L1′sin A
For P2(x2', y2'), x2'=a-L2' cos 2A, y2'=L2′sin 2A
The rest may be inferred
For Pn(xn', yn'), xn'=a-Ln' cos nA, yn'=Ln′sin nA
(2) for each monitoring point in left side tunnel half range
For Q1(x1, y1), x1=L1CosA, y1=L1 sin A
For Q2(x2, y2), x2=L2Cos 2A, y2=L2 sin 2A
The rest may be inferred
For Qn(xn, yn), xn=LnCos nA, yn=Ln sin nA
Step 7.4, according to each prison in each monitoring point coordinate and right side tunnel half range in left side tunnel half range
Measuring point coordinate, as shown in figure 3, fitting obtains tunnel monitoring cross section shape；
Step 7.5, the tunnel monitoring cross section shape of the tunnel monitoring cross section shape and initial period that this cycle monitoring are obtained
Shape compares, to obtain the deflection of tunnel monitoring cross section；
Step 7.6, whether the deflection for the tunnel monitoring cross section that judgment step 7.5 obtains is less than the reserved of step 1 determination
Deformation value, if it is less, continuing the monitoring of next monitoring cycle；If it is not, then issuing monitoring, alarming information.
In practical application, the automatic monitoring measurement method based on laser section ranging can realize that tunnel half Web monitoring in opposite side is disconnected
The range measurement in face, measuring point angle spacing can be arranged according to demand, wherein measuring point angle spacing is smaller, and measuring point number is more, measurement
As a result more accurate.In addition, the monitoring measurement equipment of tunnel two sides haunch respectively measures tunnel opposite side half range section distance,
Measurement result is transmitted or stored.It is wireless that the monitoring measurement equipment of tunnel two sides haunch can configure remote-transmission module progress data
Transmission also can configure RAM card and carry out data storage function, realizes the transmission process of data.It is disconnected according to monitoring when data processing
The monitoring measurement devices collect data of face two sides is handled, and tunnel monitoring measurement cross-section diagram is drawn, according to the prison of different moments
Measured data compares, and analyzes the monitoring section deformation；It is compared with selection section design size and deformation allowance,
It is proposed construction instruction.
A kind of automatic monitoring measurement method based on laser section ranging provided by the invention has the advantage that
Operational method measurement is simple, does not influence Tunnel Construction Schedule, and the acquisition of monitoring section data comprehensively, can carry out data
The features such as wireless transmission, raising data feedback efficiency, this method has very strong realistic meaning and applicability.
It will appreciated by the skilled person that realizing all or part of the process in above-described embodiment method, being can
With what is completed by hardware relevant to computer program instructions, above-mentioned program can be stored in a computer-readable storage
In medium, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, above-mentioned storage medium can
For magnetic disk, CD, read-only memory (ROM:Read-Only Memory) or random access memory (RAM:
RandomAccess Memory) etc..
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
Depending on protection scope of the present invention.
Claims (2)
1. a kind of automatic monitoring measurement method based on laser section ranging, which comprises the following steps:
Step 1, tunnel monitoring measurement section is selected；Obtain the prearrangement of deformation amount magnitude of the tunnel monitoring measurement section；
Step 2, left monitoring measurement equipment M is installed in the left side haunch position of the selected tunnel monitoring measurement section；It is selecting
Right monitoring measurement equipment N is installed the right side haunch position of the fixed tunnel monitoring measurement section；Left monitoring measurement equipment M and the right side
Monitoring measurement equipment N is connect with control main-machine communication；
Step 3, the initial monitoring measurement parameter of control host setting, comprising: survey line interval angles A, survey line quantity n and monitoring
Measure time interval Δ t；
Step 4, the initial time in period, left monitoring measurement equipment M emission level survey line to the right are measured in current monitor；Right monitoring
Measurement equipment N emission level survey line to the left；
Step 5, then, current monitor measures after the period starts, and for left monitoring measurement equipment M, with it, emission level is surveyed to the right
Line is then initial survey line rotates counterclockwise survey line interval angles A first, and thus tunnel half range emits the 1st article of left survey to the right
Line Y1, and record the 1st article of left survey line Y1Survey line length L '1And time of measuring t '1；Then, between reaching the monitoring measurement time
After Δ t, then with the 1st article of left survey line Y1For initial survey line, survey line interval angles A is rotated counterclockwise, thus tunnel half to the right
Width emits the 2nd article of left survey line Y2, and record the 2nd article of left survey line Y2Survey line length L '2And time of measuring t '2；The rest may be inferred,
Until with (n-1)th left survey line Yn-1For initial survey line, survey line interval angles A is rotated counterclockwise, thus tunnel half range is sent out to the right
Penetrate the left survey line Y of nthn, and record the left survey line Y of nthnSurvey line length L 'nAnd time of measuring t 'n；Then, make left monitoring
Measurement equipment M resets, it may be assumed that so that it is rotated clockwise the angle of A*n, makes its emission level survey line to the right；
Likewise, with it, emission level survey line is initial survey line to the left, then, first clockwise for right monitoring measurement equipment N
Survey line interval angles A is rotated, thus tunnel half range emits the 1st article of right survey line Z to the left1, and record the 1st article of right survey line Z1Survey
Line length L1And time of measuring t1；Then, after reaching monitoring measurement time interval Δ t, then with the 1st article of right survey line Z1It is first
Beginning survey line rotates clockwise survey line interval angles A, and thus tunnel half range emits the 2nd article of right survey line Z to the left2, and record the 2nd
The right survey line Z of item2Survey line length L2And time of measuring t2；The rest may be inferred, until with (n-1)th right survey line Zn-1Initially to survey
Line rotates clockwise survey line interval angles A, and thus tunnel half range emits the right survey line Z of nth to the leftn, and record the nth right side
Survey line ZnSurvey line length LnAnd time of measuring tn；Then, reset right monitoring measurement equipment N, it may be assumed that rotate counterclockwise it
The angle of A*n makes its emission level survey line to the left；
Step 6, a monitoring measurement period is so far completed；After reaching periodic intervals, start next monitoring measurement period
Monitoring measurement operation；
Whenever completing a monitoring measurement period, the left monitoring measurement equipment M is by the 1st article of left survey line Y1Survey line length L '1With
And time of measuring t '1, the 2nd article of left survey line Y2Survey line length L '2And time of measuring t '2..., the left survey line Y of nthnSurvey line
Length L 'nAnd time of measuring t 'nIt is uploaded to control host；
Likewise, the right monitoring measurement equipment N is by the 1st article of right survey line Z1Survey line length L1And time of measuring t1, the 2nd article
Right survey line Z2Survey line length L2And time of measuring t2..., the right survey line Z of nthnSurvey line length LnAnd time of measuring tnOn
It is transmitted to control host；
Step 7, the control host calculates the deformation of tunnel monitoring section using following methods:
Step 7.1, the control host establishes rectangular coordinate system, wherein left monitoring measurement equipment M and right monitoring measurement equipment N
Line be x-axis, left monitoring measurement equipment M point be coordinate origin；Therefore, the coordinate of left monitoring measurement equipment M be (0,
0), the coordinate of right monitoring measurement equipment N is (a, 0)；
Step 7.2, the 1st article of left survey line Y1Starting point coordinate be (0,0), if its terminal point coordinate be P1(x1′,y1′)；
2nd article of left survey line Y2Starting point coordinate be (0,0), if its terminal point coordinate be P2(x2′,y2′)；
The rest may be inferred
The left survey line Y of nthnStarting point coordinate be (0,0), if its terminal point coordinate be Pn(xn′,yn′)；
1st article of right survey line Z1Starting point coordinate be (a, 0), if its terminal point coordinate be Q1(x1,y1)；
2nd article of right survey line Z2Starting point coordinate be (a, 0), if its terminal point coordinate be Q2(x2,y2)；
The rest may be inferred
The right survey line Z of nthnStarting point coordinate be (a, 0), if its terminal point coordinate be Qn(xn,yn)；
Step 7.3, it is calculated by the following formula the terminal point coordinate of each survey line:
(1) for each monitoring point in right side tunnel half range
For P1(x1′,y1'), x1'=a-L1' cosA, y1'=L1′sinA
For P2(x2′,y2'), x2'=a-L2' cos 2A, y2'=L2′sin 2A
The rest may be inferred
For Pn(xn′,yn'), xn'=a-Ln' cos nA, yn'=Ln′sin nA
(2) for each monitoring point in left side tunnel half range
For Q1(x1,y1), x1=L1CosA, y1=L1sinA
For Q2(x2,y2), x2=L2Cos 2A, y2=L2sin 2A
The rest may be inferred
For Qn(xn,yn), xn=LnCos nA, yn=Lnsin nA
Step 7.4, according to each monitoring point in each monitoring point coordinate and right side tunnel half range in left side tunnel half range
Coordinate, fitting obtain tunnel monitoring cross section shape；
Step 7.5, the tunnel monitoring cross section shape of the tunnel monitoring cross section shape and initial period that this cycle monitoring are obtained into
Row comparison, to obtain the deflection of tunnel monitoring cross section；
Step 7.6, whether the deflection for the tunnel monitoring cross section that judgment step 7.5 obtains is less than the prearrangement of deformation amount that step 1 determines
Magnitude, if it is less, continuing the monitoring of next monitoring cycle；If it is not, then issuing monitoring, alarming information.
2. the automatic monitoring measurement method according to claim 1 based on laser section ranging, which is characterized in that the left side
The monitoring measurement equipment M and right monitoring measurement equipment N includes laser range finder, can determine angle rotary shaft and driving electricity
Machine；The laser range finder determines the rotation of angle rotary shaft under the driving of the driving motor, around described.
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| CN111911236A (en) * | 2020-09-10 | 2020-11-10 | 云南航天工程物探检测股份有限公司 | Automatic monitoring and measuring method for multi-section tunnel |
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