CN110763214B - Slope point displacement motion direction monitoring device and monitoring method - Google Patents

Slope point displacement motion direction monitoring device and monitoring method Download PDF

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CN110763214B
CN110763214B CN201911116399.9A CN201911116399A CN110763214B CN 110763214 B CN110763214 B CN 110763214B CN 201911116399 A CN201911116399 A CN 201911116399A CN 110763214 B CN110763214 B CN 110763214B
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monitoring
axis direction
slope
point
magnetic induction
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CN110763214A (en
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王念秦
鲁兴生
马啸
王超
苏颜曦
乔德京
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Xian University of Science and Technology
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Abstract

The invention discloses a slope point displacement motion direction monitoring device and a monitoring method thereof, wherein the monitoring instrument comprises a direction monitoring instrument and a data processing module, the direction monitoring instrument comprises a base support and a direction monitoring module, the base support comprises a vertical rod, a circular base and an adjusting base, and the direction monitoring module comprises a shell electronic circuit board, a microcontroller, a first wireless communication module, a three-axis gyroscope, a three-axis magnetic field sensor and a temperature sensor; the monitoring method comprises the following steps: firstly, laying monitoring points; secondly, erecting an orientation monitor; thirdly, collecting displacement motion direction monitoring data of the slope point; fourthly, processing data of the azimuth monitor; and fifthly, monitoring, early warning and judging the displacement direction of the slope body point. The invention realizes the dynamic monitoring of the position of the slope monitoring point, and has simple operation and high monitoring precision. And through early warning and judgment of slope landslide, research basis is provided for landslide stability evaluation and analysis of the slope.

Description

Slope point displacement motion direction monitoring device and monitoring method
Technical Field
The invention belongs to the technical field of slope body movement monitoring, and particularly relates to a slope body point displacement movement direction monitoring device and a monitoring method.
Background
In geological disasters which occur in China every year, the number of landslides accounts for more than 75 percent of the total number of landslides, and the economic loss caused by the landslides accounts for 70 percent of the total economic loss of the geological disasters. Landslide monitoring and early warning is one of effective measures for reducing landslide disaster risks, and aims to reduce life and property losses of people caused by landslide and improve safety indexes of people. Therefore, it is necessary to carry out landslide monitoring and early warning work.
The landslide monitoring target aiming at the slope body is mainly used for monitoring deformation characteristics of the slope body such as displacement, stress and strain or monitoring landslide induction factors such as underground water, earthquake, rainfall and human engineering activities, wherein the change of the displacement of the slope body is the most direct and important factor, so that the existing slope body monitoring method mainly comprises the steps of monitoring the surface displacement of the slope body and the internal displacement of the slope body, and a landslide early warning and forecasting mechanism is established through the displacement, the deformation speed and the acceleration of the slope body. However, monitoring of point displacement azimuthal dynamics of a slope has not yet occurred. Therefore, a slope body point displacement motion direction monitoring device and a monitoring method which are simple in structure and reasonable in design are absent at present, the operation is easy, the monitoring precision is high, the slope body motion direction monitoring is realized, and research basis is provided for slope stability evaluation and analysis of a slope body through slope body landslide early warning and judgment.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a slope body point displacement motion direction monitoring device aiming at the defects in the prior art, the design is reasonable, the direction monitor is arranged on the slope body monitoring point, the direction dynamic monitoring of the slope body monitoring point is realized, the slope body landslide early warning judgment is adopted, the research basis is provided for the landslide stability evaluation and analysis of the slope body, the operation is easy, and the monitoring precision is high.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a slope position displacement motion position monitoring devices which characterized in that: the azimuth monitoring device comprises an azimuth monitoring device and a data processing module connected with the azimuth monitoring device, wherein the azimuth monitoring device comprises a base support and an azimuth monitoring module arranged on the base support, the base support comprises a vertical rod, a circular base arranged at the top of the vertical rod and an adjusting base arranged on the circular base, and the adjusting base comprises an adjusting bottom plate for mounting the azimuth monitoring module and an adjusting part connected between the adjusting bottom plate and the circular base;
the azimuth monitoring module includes the casing and sets up the electronic circuit board in the casing, and is integrated microcontroller, first wireless communication module, three-axis gyroscope and the three-axis magnetic field sensor who is used for monitoring the azimuth of monitoring point on the electronic circuit board to and be used for monitoring the temperature sensor of the ambient temperature that the slope body is located, first wireless communication module meets with microcontroller, three-axis magnetic field sensor's output and the output of three-axis gyroscope all meet with microcontroller's input, data processing module includes the computer and the second wireless communication module that meets with the computer, microcontroller carries out data wireless communication with the computer through first wireless communication module and second wireless communication module.
The slope point displacement motion direction monitoring device is characterized in that: the adjusting part comprises a guide pillar arranged on the circular base and penetrating through the adjusting bottom plate, a spring sleeved on the guide pillar and positioned between the adjusting bottom plate and the circular base, and a locking nut sleeved at the extending end of the guide pillar.
The slope point displacement motion direction monitoring device is characterized in that: be provided with the retaining member between adjusting the bottom plate and the circular base, the quantity of retaining member is four, four the retaining member is established the fixation nut that the tip that the circular base was stretched out to fixation screw including wearing to establish the fixation screw between adjusting the bottom plate and the circular base with the cover, and four fixation screw are located the four corners of adjusting the bottom plate, the quantity of guide pillar is four, and four guide pillars are located adjusting the bottom plate four corners and are close to fixation screw and lay.
Meanwhile, the invention also discloses a method for monitoring the displacement motion direction of the slope point, which has the advantages of simple steps, reasonable design, convenient implementation and good use effect, and is characterized by comprising the following steps:
step one, monitoring point layout:
step 101, dividing a slope body into a stable area and a sliding area; wherein, the connecting line between the sliding area and the stabilizing area is a landslide perimeter;
102, arranging a plurality of longitudinal monitoring section lines along the main sliding direction of a slope body, arranging a plurality of transverse monitoring section lines along the slope body perpendicular to the main sliding direction, wherein the length from the two ends of the longitudinal monitoring section lines to the stable region after extending out of the landslide periphery is 5-10 m, and the length from the two ends of the transverse monitoring section lines to the stable region after extending out of the landslide periphery is 5-10 m;
setting a stable body monitoring point at the end point of the longitudinal monitoring section line and the end point of the transverse monitoring section line, and setting a slope body monitoring point along the intersection of the landslide perimeter and the longitudinal monitoring section line, the intersection of the landslide perimeter and the transverse monitoring section line and the intersection of the longitudinal monitoring section line and the transverse monitoring section line in the sliding region range; wherein, the number of the stable body monitoring points is a plurality, the number of the slope body monitoring points is a plurality,
103, setting a reference monitoring point at the position of the slope foot level of the slope body;
step two, erecting a position monitor:
step 201, respectively installing azimuth monitors on a plurality of stable body monitoring points; wherein, the position monitor installed on the monitoring point of the stabilizing body is recorded as the position monitor of the stabilizing body;
202, respectively installing azimuth monitors on a plurality of slope monitoring points;
step 203, installing an azimuth monitor on the reference monitoring point; wherein, the position monitor installed on the reference monitoring point is recorded as a reference azimuth meter;
step three, collecting slope point displacement motion azimuth monitoring data:
301, the multiple stabilizer monitoring points are respectively a1 st stabilizer monitoring point, a 2 nd stabilizer monitoring point, a1 st stabilizer monitoring point, an a nd stabilizer monitoring point, a. Wherein a and A are positive integers, a is more than or equal to 1 and less than or equal to A, and A is more than or equal to 3;
the multiple slope body monitoring points are respectively a1 st slope body monitoring point, a 2 nd slope body monitoring point, a.th slope body monitoring point, a jth slope body monitoring point, a.th slope body monitoring point and a jth slope body monitoring point, and the corresponding multiple stable body position monitors are respectively a1 st position monitor, a 2 nd position monitor, a.th position monitor and a jth position monitor; wherein J and J are positive integers, J is more than or equal to 1 and less than or equal to J, and J is more than 300;
step 302, the A stabilizer orientation monitor monitors the azimuth angles of the A stabilizer monitoring points respectively, wherein the a-th stabilizer orientation monitor monitors the azimuth angle of the a-th stabilizer monitoring point according to the preset sampling time to obtain the a-th stabilizer monitoring point at the ith sampling timeThe azimuth angle is recorded as
Figure GDA0002612053930000041
And sending to the computer; wherein i is a positive integer;
j azimuth monitors respectively monitor the azimuth angle of J slope body monitoring points, wherein, the jth azimuth monitor monitors the azimuth angle of the jth slope body monitoring point according to the preset sampling time, and the azimuth angle of the jth slope body monitoring point at the ith sampling moment is obtained and recorded as
Figure GDA0002612053930000042
And sending to the computer;
the reference azimuth monitor monitors the azimuth angle of the reference point according to the preset sampling time, and the azimuth angle of the reference point at the ith sampling moment is obtained and recorded as the azimuth angle of the reference point
Figure GDA0002612053930000043
And sending to the computer; wherein the azimuth angle of the ith sampling time reference point is recorded
Figure GDA0002612053930000044
Azimuth of main slip direction at ith sampling moment
Figure GDA0002612053930000045
Step four, processing the data of the azimuth monitor:
step 401, the computer according to the formula
Figure GDA0002612053930000046
Obtaining the azimuth angle change value of the a-th stable body monitoring point between the ith sampling moment and the (i-1) th sampling moment
Figure GDA0002612053930000047
Wherein the content of the first and second substances,
Figure GDA0002612053930000048
denotes the ith-azimuth of the a-th stabilizer monitor point at 1 sampling instant; wherein i is more than or equal to 2;
the computer sorts the azimuth angle change values of A stabilizer monitoring points between the ith sampling time and the (i-1) th sampling time from small to large to obtain the minimum azimuth angle change value of the stabilizer monitoring points between the ith sampling time and the (i-1) th sampling time
Figure GDA0002612053930000049
And the maximum value of the azimuth angle change of the monitoring point of the steady body between the ith sampling moment and the (i-1) th sampling moment
Figure GDA00026120539300000410
Step 402, the computer calculates according to the formula
Figure GDA00026120539300000411
Obtaining the average value of the variation of the azimuth angle of the monitoring points of the stabilizer at two adjacent sampling moments
Figure GDA00026120539300000412
Step 403, the computer makes a formula according to
Figure GDA00026120539300000413
Obtaining the azimuth angle change value of the jth slope monitoring point between the ith sampling moment and the (i-1) th sampling moment
Figure GDA00026120539300000414
Step five, monitoring, early warning and judging the displacement and the orientation of the slope body point:
computer pair
Figure GDA00026120539300000415
And
Figure GDA00026120539300000416
the judgment is carried out in the following specific process:
step 501, when j is equal to 1, the computerTo pair
Figure GDA0002612053930000051
And
Figure GDA0002612053930000052
make a judgment when
Figure GDA0002612053930000053
And is
Figure GDA0002612053930000054
In the time, the computer marks the 1 st slope monitoring point as a very serious landslide point, and the number of the very serious landslide points is NfAdding 1; wherein the number of severe landslides is NfIs zero;
when in use
Figure GDA0002612053930000055
And is
Figure GDA0002612053930000056
In the time, the computer marks the 1 st slope monitoring point as a severe landslide point, and the number of the severe landslide points is NyAdding 1; wherein the number of severe landslides is NyIs zero;
when in use
Figure GDA0002612053930000057
And is
Figure GDA0002612053930000058
In the time, the computer marks the 1 st slope monitoring point as a landslide point, and the number of landslide points NhAdding 1; wherein the number of landslide points is NhIs zero;
when in use
Figure GDA0002612053930000059
And is
Figure GDA00026120539300000510
In the time, the computer marks the 1 st slope monitoring point as a stable point, and the number of the stable points is NwAdding 1; it is composed ofMiddle, number of stable points NwIs zero;
step 502, according to the method described in step 501, until J equals J, the judgment of a plurality of slope monitoring points is completed, and the number N of severe landslide points is obtainedfNumber of severe landslides NyNumber of landslides NhAnd number of stable points Nw(ii) a Wherein N isf、NyAnd NhAre all positive integers;
step 503, when
Figure GDA00026120539300000511
And
Figure GDA00026120539300000512
when the slope body does not slide, the computer controls the display screen to display blue overall early warning, and the situation that the slope body does not slide is shown;
when in use
Figure GDA00026120539300000513
And
Figure GDA00026120539300000514
when the slope body is in a landslide state, the computer controls the display screen to display yellow overall early warning to show that the slope body has a landslide condition;
when in use
Figure GDA00026120539300000515
Then the computer will NhThe maximum distance between two of the landslide points is recorded as Lh,maxUsing a computer with NhThe center of the maximum distance between two of the landslide points is taken as the origin and L is taken ash,maxThe number of slope monitoring points in a circular area of diameter is recorded as Ms,hWhen is coming into contact with
Figure GDA00026120539300000516
When the slope is over, the computer controls the display screen to display the local yellow early warning, and the slope is explained by Lh,maxA local landslide situation may exist for a circular area of diameter;
when in use
Figure GDA00026120539300000517
And
Figure GDA00026120539300000518
when the slope body is in a severe landslide state, the computer controls the display screen to display orange overall early warning, and the situation that the slope body is in a severe landslide state is shown;
when in use
Figure GDA00026120539300000519
Then the computer will NyThe maximum distance between two severe landslide points of severe landslide points is recorded as Ly,maxUsing a computer to obtain NyThe center of the maximum distance between two severe landslide points in the severe landslide points is taken as the origin, and L is taken asy,maxIs the number of ramp body monitoring points in a circular area of diameter and is recorded as M's,bWhen is coming into contact with
Figure GDA0002612053930000061
When the slope is in use, the computer controls the display screen to display orange local early warning, and L is used for explaining the slopey,maxA local severe landslide situation may exist for a circular area of diameter;
when in use
Figure GDA0002612053930000062
And
Figure GDA0002612053930000063
when the landslide is serious, the computer controls the display screen to display red overall early warning, which shows that the landslide is serious overall;
when in use
Figure GDA0002612053930000064
Then the computer will NfThe maximum distance between two very severe landslide points of a very severe landslide point is designated Lf,maxUsing a computer to obtain NfThe center of the maximum distance between two very severe landslide points of the very severe landslide points is taken as the origin, Lf,maxIs a circular area of diameterThe number of the monitoring points of the middle slope body is recorded as Ms,bWhen is coming into contact with
Figure GDA0002612053930000065
When the slope is over, the computer controls the display screen to display the local red early warning, and the L in the slope is explainedf,maxA circular area of diameter may have a locally very severe landslide situation.
The above method is characterized in that: in step 302, the method for obtaining the azimuth angle of the ith steady body monitoring point at the ith sampling time is the same as the method for obtaining the azimuth angle of the jth slope body monitoring point at the ith sampling time, and the specific process for obtaining the azimuth angle of the jth slope body monitoring point at the ith sampling time is as follows:
step 3021, monitoring the magnetic induction intensity in the X-axis direction, the magnetic induction intensity in the Y-axis direction, and the magnetic induction intensity in the Z-axis direction by a three-axis magnetic field sensor in the jth azimuth monitor according to preset sampling time, sending the monitored magnetic induction intensity value in the X-axis direction, the monitored magnetic induction intensity value in the Y-axis direction, and the monitored magnetic induction intensity value in the Z-axis direction to a microcontroller, and recording the magnetic induction intensity value in the X-axis direction acquired at the ith sampling time as a magnetic induction intensity value in the ith-axis direction by the microcontroller
Figure GDA0002612053930000067
Recording the magnetic induction intensity value in the Y-axis direction acquired at the ith sampling time as Yi jRecording the magnetic induction intensity value in the Z-axis direction acquired at the ith sampling time
Figure GDA0002612053930000066
(ii) a The X-axis direction, the Y-axis direction and the Z-axis direction of the three-axis magnetic field sensor form an XYZ coordinate system;
step 3022, monitoring the angle of rotation around the X-axis direction and the angle of rotation around the Y-axis direction by the three-axis gyroscope in the jth azimuth monitor according to preset sampling time, sending the monitored angle of rotation around the X-axis direction and the monitored angle of rotation around the Y-axis direction to the microcontroller, and recording the angle of rotation around the X-axis direction collected at the ith sampling moment as the roll angle α by the microcontrolleriThe value of the angle of rotation around the Y axis direction collected at the ith sampling time is recorded as the pitch angle βi；
Step 3023, the microcontroller calculates the formula
Figure GDA0002612053930000071
And
Figure GDA0002612053930000072
obtaining the primary correction value of the magnetic induction intensity in the X-axis direction at the ith sampling moment
Figure GDA0002612053930000073
Primary correction value of magnetic induction intensity in Y-axis direction at ith sampling moment
Figure GDA0002612053930000074
And the primary correction value of the magnetic induction intensity in the Z-axis direction at the ith sampling moment
Figure GDA0002612053930000075
Wherein, XbIndicating the correction coefficient of magnetic induction in the X-axis direction, YbMagnetic induction correction coefficient, Z, representing the Y-axis directionbA magnetic induction correction coefficient indicating a Z-axis direction;
step 3024, the microcontroller calculates the formula
Figure GDA0002612053930000076
And
Figure GDA0002612053930000077
obtaining the magnetic induction intensity secondary correction value of the X-axis direction at the ith sampling moment
Figure GDA0002612053930000078
And the magnetic induction intensity secondary correction value of the Y-axis direction at the ith sampling moment
Figure GDA0002612053930000079
Step 3025, the microcontroller calculates the formula
Figure GDA00026120539300000710
And
Figure GDA00026120539300000711
obtaining the magnetic induction intensity cubic correction value in the X-axis direction at the ith sampling moment
Figure GDA00026120539300000712
And the third correction value of the magnetic induction intensity in the Y-axis direction at the ith sampling moment
Figure GDA00026120539300000713
Wherein the content of the first and second substances,xrepresents the temperature correction factor in the X-axis direction,yrepresents a Y-axis direction temperature correction factor;
step 3026, when
Figure GDA00026120539300000714
Then the microcontroller obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA00026120539300000715
When in use
Figure GDA00026120539300000716
Then the microcontroller obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA00026120539300000717
When in use
Figure GDA00026120539300000718
Then the microcontroller obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA00026120539300000719
When in use
Figure GDA00026120539300000720
Then the microcontroller obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA00026120539300000721
When in use
Figure GDA00026120539300000722
According to formula, the microcontroller
Figure GDA00026120539300000723
Obtaining an included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA00026120539300000724
Wherein the content of the first and second substances,
Figure GDA00026120539300000725
the value range of (a) is-pi/2;
when in use
Figure GDA0002612053930000081
According to formula, the microcontroller
Figure GDA0002612053930000082
Obtaining an included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA0002612053930000083
Step 3027, the microcontroller calculates the formula
Figure GDA0002612053930000084
Obtaining an included angle between the jth slope monitoring point at the ith sampling moment and the geographic north pole along the X-axis direction
Figure GDA0002612053930000085
The azimuth angle of the jth slope monitoring point at the ith sampling moment is
Figure GDA0002612053930000086
Wherein, sigma represents the declination of the region where the slope body is located;
step 3028, the microcontroller obtains the azimuth angle of the jth slope monitoring point at the ith sampling moment
Figure GDA0002612053930000087
The data are sent out through the first wireless communication module, the computer receives the data sent out through the first wireless communication module through the second wireless communication module, and the computer obtains the azimuth angle of the jth slope monitoring point at the ith sampling moment
Figure GDA0002612053930000088
Step 3029, according to the method described in steps 3021 to 3028, the computer obtains the azimuth angle of the a-th steady body monitoring point at the ith sampling time
Figure GDA0002612053930000089
The above method is characterized in that: magnetic induction intensity correction coefficient X in X-axis direction in step 3023bMagnetic induction correction coefficient Y in Y-axis directionbAnd a magnetic induction intensity correction coefficient Z in the Z-axis directionbThe acquisition process is as follows:
step 30231, horizontally placing the orientation monitor, uniformly rotating the orientation monitor 360 degrees around the Z direction, monitoring the magnetic induction intensity in the X-axis direction, the magnetic induction intensity in the Y-axis direction and the magnetic induction intensity in the Z-axis direction by the three-axis magnetic field sensor in the process that the orientation monitor is uniformly rotated 360 degrees around the Z direction, and sending the monitored magnetic induction intensity value in the X-axis direction, the monitored magnetic induction intensity value in the Y-axis direction and the monitored magnetic induction intensity value in the Z-axis direction to the microcontroller;
step 30232, the microcontroller obtains the maximum value X of the magnetic induction intensity in the X-axis directionmaxMagnetic induction in X-axis directionMaximum value XminMagnetic induction intensity maximum value Y in Y-axis directionmaxMagnetic induction intensity maximum value Y in Y-axis directionminMaximum value of magnetic induction intensity Z in Z-axis directionmaxAnd the maximum value Z of the magnetic induction intensity in the Z-axis directionmin；
Step 30233 the microcontroller calculates the formula Xb＝(Xmax+Xmin)/2、Yb＝(Ymax+Ymin) (iii) 2 and Zb＝(Zmax+Zmin) (ii)/2, obtaining the magnetic induction intensity correction coefficient X in the X-axis directionbMagnetic induction intensity correction coefficient Y in Y-axis directionbAnd a magnetic induction intensity correction coefficient Z in the Z-axis directionb；
The temperature correction factor in step 3025 is obtained as follows:
step 30251, horizontally placing the orientation monitor, and obtaining a first test value of the magnetic induction intensity in the X-axis direction at the e-th sampling time by the method described in the steps 3021 and 3023 at the normal temperature of 25 ℃
Figure GDA0002612053930000091
And the magnetic induction intensity in the Y-axis direction at the e-th sampling moment corrects the first test value Y oncee (c)；
Step 30252, monitoring the ambient temperature of the slope by the temperature sensor, sending the monitored ambient temperature to the microcontroller, and obtaining the ambient temperature T by the microcontrollercThe data is sent out through the first wireless communication module, the computer receives the data sent out by the first wireless communication module through the second wireless communication module, and the computer obtains the ambient temperature Tc；
Step 30253 placing the position monitor horizontally at an ambient temperature TcNext, according to the method described in step 3021 and step 3023, a second test value for once correction of the magnetic induction intensity in the X-axis direction at the e-th sampling time is obtained
Figure GDA0002612053930000093
And the magnetic induction intensity of the Y-axis direction at the e-th sampling timeCorrecting the second test value
Figure GDA0002612053930000094
Wherein E is a positive integer, E is more than or equal to 1 and less than or equal to E, E is a positive integer, and E is more than or equal to 100;
step 30254 the microcontroller based on
Figure GDA0002612053930000095
And
Figure GDA0002612053930000096
obtaining the temperature correction factor in the X-axis directionxAnd a temperature correction factor in the Y-axis directiony。
The above method is characterized in that: the specific process of installing the position monitor in step 201, step 202 and step 203 is as follows:
step A, a stabilizing body monitoring point, a slope body monitoring point and a reference point are called as mounting points;
b, manufacturing a cement monitoring pier with the length, the width and the height of 20cm, 20cm and 50 cm; pouring a vertical rod in a base support on a cement monitoring pier, wherein the center of the vertical rod is superposed with the center of the cement monitoring pier;
c, excavating a monitoring pit with the length, the width and the height of 20cm, 20cm and 60cm at the mounting point, and burying the cement monitoring pier poured with the base support into the monitoring pit; the cement monitoring pier is characterized in that the periphery of the cement monitoring pier and the periphery of the monitoring pit are compacted through cement mortar filling, and the centers of the monitoring pit, the cement monitoring pier and the vertical rod and the installation point are located on the same straight line;
d, backfilling earthwork at the top of the cement monitoring pier and tamping until the surface of the monitoring pit is flush with the ground surface where the monitoring pit is located;
e, adjusting the parallel between the adjusting bottom plate and the round base through the adjusting part until the adjusting bottom plate is in a horizontal state, and then fixing the adjusting bottom plate and the round base through the locking part;
and F, installing an orientation monitoring module on the adjusting bottom plate.
The above method is characterized in that: when the position monitor is installed on the stable body monitoring point in step 201, the X axis on the stable body position monitor is perpendicular to the tangential direction of the stable body monitoring point and points to the bottom of the slope body; wherein, the tangent of the monitoring point of the stabilizer is a tangent on the cross section along the monitoring point of the stabilizer;
when the position monitor is installed on the slope body monitoring point in the step 202, the X axis of the position monitor is vertical to the tangential direction of the slope body monitoring point and points to the bottom of the slope body; wherein, the tangent of the slope monitoring point is a tangent on the cross section along the slope monitoring point;
when the azimuth monitor is installed on the reference monitoring point in the step 203, the X axis of the reference azimuth monitor is parallel to the tangential direction of the reference monitoring point and points to the bottom of the slope body; wherein, the tangential direction of the reference monitoring point is consistent with the inclination direction of the main sliding direction of the slope body.
Compared with the prior art, the invention has the following advantages:
1. the slope point displacement motion direction monitoring device is simple in structure, reasonable in design, simple and convenient to install and arrange, low in cost and high in monitoring precision.
2. The adopted slope body point displacement motion direction monitoring device comprises a base support and a direction monitoring module, wherein the direction monitoring module is installed at a slope body monitoring point through the base support, the direction monitoring of the slope body monitoring point is realized, the influence of vibration on the monitoring parameters of a sensor in the direction monitoring module is reduced through the base support, the direction monitoring module is convenient to arrange on the other hand, and the arrangement operation is convenient.
3. Set up triaxial magnetic field sensor in the position monitoring module who adopts, be for the magnetic induction to the X axle direction of monitoring point, the magnetic induction of Y axle direction and the magnetic induction of Z axle direction monitor, according to the magnetic induction of X axle direction, the magnetic induction of Y axle direction and the magnetic induction of Z axle direction obtain slope body monitoring point along the contained angle between X axle direction and the earth magnetism north pole, then through magnetic declination compensation, obtain slope body monitoring point along the contained angle between X axle direction and the geography north pole, thereby realize the azimuth monitoring of slope body monitoring point.
4. Set up temperature sensor and triaxial gyroscope in the position monitoring module that adopts, the triaxial gyroscope monitors the X direction of triaxial magnetic field sensor and the rotation angle of Y direction, realize the magnetic induction intensity that can be to the X axis direction through the rotation angle of X direction and Y direction, the magnetic induction intensity of Y axis direction and the correction of the magnetic induction intensity of Z axis direction, and through temperature sensor, obtain the temperature correction factor, realize realizing the magnetic induction intensity that can be to the X axis direction to the rotation angle of X direction and Y direction, the temperature correction of the magnetic induction intensity of Y axis direction and the magnetic induction intensity of Z axis direction, the accuracy of the azimuth monitoring of slope body monitoring point has been improved.
5. The adopted position monitoring module is provided with a first wireless communication module, the data processing module is provided with a second wireless communication module, and data monitored by the position monitoring module are wirelessly transmitted to a computer through the first wireless communication module and the second wireless communication module, so that wireless transmission of the data is realized, and the position monitor is convenient to install.
6. The adopted method for monitoring the displacement motion direction of the slope point has simple steps, convenient realization and simple and convenient operation, and ensures the accuracy of landslide early warning and forecasting.
7. The adopted method for monitoring the displacement motion azimuth of the slope body point is simple and convenient to operate and good in using effect, monitoring points are distributed firstly, an azimuth monitor is erected secondly, then the displacement motion azimuth monitoring data of the slope body point is collected, the collection of the azimuth angle of the monitoring point of the stabilizing body and the azimuth angle of the monitoring point of the slope body is realized, and then the data of the azimuth monitor is processed to obtain the azimuth angle change value of the monitoring point of the stabilizing body and the azimuth angle change value of the monitoring point of the slope body; and finally, carrying out monitoring and early warning judgment on the displacement and the direction of the slope body according to the direction angle change value of the stable body monitoring point and the direction angle change value of the slope body monitoring point so as to obtain the landslide condition of the slope body.
In conclusion, the invention has reasonable design, realizes the dynamic direction monitoring of the slope monitoring point by arranging the direction monitor on the slope monitoring point, provides a research basis for the stability evaluation and analysis of the slope through the early warning and judgment of the slope landslide, and has easy operation and high monitoring precision.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic circuit block diagram of a slope point displacement motion direction monitoring device of the invention.
Fig. 2 is a schematic structural view of the slope point displacement motion direction monitoring device of the invention.
Fig. 3 is a schematic structural diagram of arrangement of monitoring points according to the present invention.
FIG. 4 is a flow chart of the method for monitoring the displacement motion orientation of a slope point according to the present invention.
FIG. 5 is a schematic view of the position of the azimuth monitor of the present invention installed on the cross section of the monitoring point of the slope body.
Fig. 6 is a top view of fig. 5.
FIG. 7 is a schematic diagram of the position monitor installed on the reference monitoring point according to the present invention.
FIG. 8 is a top view of the orientation monitor of FIG. 7.
Description of reference numerals:
1-a microcontroller; 2-a three-axis magnetic field sensor; 3-a three-axis gyroscope;
4-a first wireless communication module; 5-a second wireless communication module; 6-a computer;
8-a temperature sensor; 9-a stabilization zone;
10-orientation monitor; 11-a circular base; 12-a spring;
14-a fixed screw; 17-adjusting the bottom plate;
19-a guide post; 20-vertical pole; 21-a locking nut;
22-bolt; 23-fixing the nut; 24-level bubble;
25-monitoring the section line in the transverse direction; 26-a sliding zone; 27 — landslide perimeter;
28-longitudinal monitoring of section lines; 30-cement monitoring piers; 31-slope body.
Detailed Description
The device for monitoring the displacement motion position of the slope body point as shown in fig. 1 and fig. 2 comprises a position monitor and a data processing module connected with the position monitor, wherein the position monitor comprises a base support and a position monitoring module 10 arranged on the base support, the base support comprises a vertical rod 20, a circular base 11 arranged at the top of the vertical rod 20 and an adjusting base arranged on the circular base 11, and the adjusting base comprises an adjusting bottom plate 17 for mounting the position monitoring module 10 and an adjusting part connected between the adjusting bottom plate 17 and the circular base 11;
position monitoring module 10 includes the casing and sets up the electronic circuit board in the casing, and is integrated microcontroller 1, first wireless communication module 4, three-axis gyroscope 3 on the electronic circuit board and be used for monitoring the three-axis magnetic field sensor 2 of the azimuth of monitoring point to and be used for monitoring the temperature sensor 8 of the ambient temperature that the slope body is located, first wireless communication module 4 meets with microcontroller 1, the output of three-axis magnetic field sensor 2 and the output of three-axis gyroscope 3 all meet with microcontroller 1's input, data processing module includes computer 6 and the second wireless communication module 5 that meets with computer 6, microcontroller 1 carries out data wireless communication with computer 6 through first wireless communication module 4 and second wireless communication module 5.
In this embodiment, the adjusting component includes a guide post 19 disposed on the circular base 11 and penetrating through the adjusting bottom plate 17, a spring 12 sleeved on the guide post 19 and located between the adjusting bottom plate 17 and the circular base 11, and a lock nut 21 sleeved on the extending end of the guide post 19.
In this embodiment, locking members are arranged between the adjusting bottom plate 17 and the circular base 11, the number of the locking members is four, the four locking members include fixing screws 14 penetrating between the adjusting bottom plate 17 and the circular base 11 and fixing nuts 23 sleeved on end portions of the fixing screws 14 extending out of the circular base 11, the four fixing screws 14 are located at four corners of the adjusting bottom plate 17, the number of the guide pillars 19 is four, and the four guide pillars 19 are located at four corners of the adjusting bottom plate 17 and are arranged close to the fixing screws 14.
In this embodiment, the three-axis magnetic field sensor 2 is an HMC5883L three-axis magnetic field sensor, the three-axis gyroscope 3 is an L3G4200D three-axis gyroscope, and the temperature sensor 8 is a DS18B20 temperature sensor; the adjusting bottom plate 17 is provided with a level bubble 24.
In this embodiment, the first wireless communication module 4 is a USR-C210 WIFI module.
In this embodiment, the second wireless communication module 5 may adopt a Tenda 4 antenna wireless router with model F6.
In this embodiment, in the actual connection process, the first wireless communication module 4 is connected to the microcontroller 1 through an RS232 serial port.
In this embodiment, in the actual connection process, the RJ45 network interface of the second wireless communication module 5 is connected to the RJ45 network interface of the computer 6 through a network cable.
In this embodiment, the USR-C210 WIFI module is small in size, is used for installation, and runs with low power consumption.
In this embodiment, the microcontroller 1 uses an STC8A8k64S4a12 single chip microcomputer, which supplies power for 3.3V and operates with low power consumption.
In this embodiment, the three-axis gyroscope 3 is a L3G4200D three-axis gyroscope, which has a small volume and low power consumption and is suitable for slope monitoring.
As shown in fig. 3 and 4, the method for monitoring the displacement motion direction of the slope point comprises the following steps:
step one, monitoring point layout:
step 101, dividing a slope body 31 into a stable area 9 and a sliding area 26; wherein the connection line between the sliding region 26 and the stabilizing region 9 is a landslide perimeter 27;
102, arranging a plurality of longitudinal monitoring section lines 28 along the main sliding direction of the slope body 31, arranging a plurality of transverse monitoring section lines 25 along the slope body perpendicular to the main sliding direction, wherein the length from the two ends of the longitudinal monitoring section lines 28 to the stable region 9 after extending out of the landslide perimeter 27 is 5 m-10 m, and the length from the two ends of the transverse monitoring section lines 25 to the stable region 9 after extending out of the landslide perimeter 27 is 5 m-10 m;
setting a stable body monitoring point at the end point of the longitudinal monitoring section line 28 and the end point of the transverse monitoring section line 25, and setting a slope body monitoring point along the intersection of the landslide perimeter 27 and the longitudinal monitoring section line 28, the intersection of the landslide perimeter 27 and the transverse monitoring section line 25 and the intersection of the longitudinal monitoring section line 28 and the transverse monitoring section line 25 in the range of the sliding zone 26; wherein, the number of the stable body monitoring points is a plurality, the number of the slope body monitoring points is a plurality,
103, setting a reference monitoring point at the position of the slope foot level of the slope body 31;
step two, erecting a position monitor:
step 201, respectively installing azimuth monitors on a plurality of stable body monitoring points; wherein, the position monitor installed on the monitoring point of the stabilizing body is recorded as the position monitor of the stabilizing body;
202, respectively installing azimuth monitors on a plurality of slope monitoring points;
step 203, installing an azimuth monitor on the reference monitoring point; wherein, the position monitor installed on the reference monitoring point is recorded as a reference azimuth meter;
step three, collecting slope point displacement motion azimuth monitoring data:
301, the multiple stabilizer monitoring points are respectively a1 st stabilizer monitoring point, a 2 nd stabilizer monitoring point, a1 st stabilizer monitoring point, an a nd stabilizer monitoring point, a. Wherein a and A are positive integers, a is more than or equal to 1 and less than or equal to A, and A is more than or equal to 3;
the multiple slope body monitoring points are respectively a1 st slope body monitoring point, a 2 nd slope body monitoring point, a.th slope body monitoring point, a jth slope body monitoring point, a.th slope body monitoring point and a jth slope body monitoring point, and the corresponding multiple stable body position monitors are respectively a1 st position monitor, a 2 nd position monitor, a.th position monitor and a jth position monitor; wherein J and J are positive integers, J is more than or equal to 1 and less than or equal to J, and J is more than 300;
step 302, the A stabilizer azimuth monitor monitors the azimuth angles of the A stabilizer monitoring points respectively, wherein the second stabilizer monitors the azimuth angles of the A stabilizer monitoring pointsThe a stabilizer azimuth monitor monitors the azimuth angle of the a-th stabilizer monitoring point according to the preset sampling time, and the azimuth angle of the a-th stabilizer monitoring point at the ith sampling moment is obtained and recorded as
Figure GDA0002612053930000151
And sent to the computer 6; wherein i is a positive integer;
j azimuth monitors respectively monitor the azimuth angle of J slope body monitoring points, wherein, the jth azimuth monitor monitors the azimuth angle of the jth slope body monitoring point according to the preset sampling time, and the azimuth angle of the jth slope body monitoring point at the ith sampling moment is obtained and recorded as
Figure GDA0002612053930000152
And sent to the computer 6;
the reference azimuth monitor monitors the azimuth angle of the reference point according to the preset sampling time, and the azimuth angle of the reference point at the ith sampling moment is obtained and recorded as the azimuth angle of the reference point
Figure GDA0002612053930000153
And sent to the computer 6; wherein the azimuth angle of the ith sampling time reference point is recorded
Figure GDA0002612053930000154
Azimuth of main slip direction at ith sampling moment
Figure GDA0002612053930000155
Step four, processing the data of the azimuth monitor:
step 401, computer 6 according to formula
Figure GDA0002612053930000156
Obtaining the azimuth angle change value of the a-th stable body monitoring point between the ith sampling moment and the (i-1) th sampling moment
Figure GDA0002612053930000157
Wherein the content of the first and second substances,
Figure GDA0002612053930000158
the azimuth angle of the alpha-th stabilizer monitoring point at the ith-1 sampling moment is represented; wherein i is more than or equal to 2;
the computer 6 sorts the azimuth angle change values of A stabilizer monitoring points between the ith sampling time and the (i-1) th sampling time from small to large to obtain the minimum azimuth angle change value of the stabilizer monitoring point between the ith sampling time and the (i-1) th sampling time
Figure GDA0002612053930000161
And the maximum value of the azimuth angle change of the monitoring point of the steady body between the ith sampling moment and the (i-1) th sampling moment
Figure GDA0002612053930000162
Step 402, computer 6 according to formula
Figure GDA0002612053930000163
Obtaining the average value of the variation of the azimuth angle of the monitoring points of the stabilizer at two adjacent sampling moments
Figure GDA0002612053930000164
Step 403, the computer 6 according to the formula
Figure GDA0002612053930000165
Obtaining the azimuth angle change value of the jth slope monitoring point between the ith sampling moment and the (i-1) th sampling moment
Figure GDA0002612053930000166
Step five, monitoring, early warning and judging the displacement and the orientation of the slope body point:
6 pairs of computers
Figure GDA0002612053930000167
And
Figure GDA0002612053930000168
the judgment is carried out in the following specific process:
step 501, when j is equal to 1, the computers 6 are paired
Figure GDA0002612053930000169
And
Figure GDA00026120539300001610
make a judgment when
Figure GDA00026120539300001611
And is
Figure GDA00026120539300001612
In the meantime, the computer 6 marks the 1 st slope monitoring point as a very severe landslide point, the number of the very severe landslide points NfAdding 1; wherein the number of severe landslides is NfIs zero;
when in use
Figure GDA00026120539300001613
And is
Figure GDA00026120539300001614
In the meantime, the computer 6 marks the 1 st slope monitoring point as a severe landslide point, and the number of severe landslide points NyAdding 1; wherein the number of severe landslides is NyIs zero;
when in use
Figure GDA00026120539300001615
And is
Figure GDA00026120539300001616
In the meantime, the computer 6 marks the 1 st slope monitoring point as a landslide point, and the number of landslide points NhAdding 1; wherein the number of landslide points is NhIs zero;
when in use
Figure GDA00026120539300001617
And is
Figure GDA00026120539300001618
In the meantime, the computer 6 marks the 1 st slope monitoring point as a stable point, and the number of the stable points is NwAdding 1; wherein, the number of stabilization points NwIs zero;
step 502, according to the method described in step 501, until J equals J, the judgment of a plurality of slope monitoring points is completed, and the number N of severe landslide points is obtainedfNumber of severe landslides NyNumber of landslides NhAnd number of stable points Nw(ii) a Wherein N isf、NyAnd NhAre all positive integers;
step 503, when
Figure GDA00026120539300001619
And
Figure GDA00026120539300001620
when the slope body 31 does not slide, the computer 6 controls the display screen to display the blue integral early warning, so that the situation that the slope body 31 does not slide on the whole is shown;
when in use
Figure GDA00026120539300001621
And
Figure GDA00026120539300001622
when the slope body 31 is in a landslide state, the computer 6 controls the display screen to display the yellow overall early warning, and the situation that the slope body 31 is in a landslide state is shown;
when in use
Figure GDA00026120539300001623
Then computer 6 will NhThe maximum distance between two of the landslide points is recorded as Lh,maxUsing a computer with NhThe center of the maximum distance between two of the landslide points is taken as the origin and L is taken ash,maxThe number of slope monitoring points in a circular area of diameter is recorded as Ms,hWhen is coming into contact with
Figure GDA0002612053930000171
When the temperature of the water is higher than the set temperature,the computer 6 controls the display screen to display the local yellow early warning, which indicates that L is used in the slope body 31h,maxA local landslide situation may exist for a circular area of diameter;
when in use
Figure GDA0002612053930000172
And
Figure GDA0002612053930000173
when the slope body 31 is in severe landslide, the computer 6 controls the display screen to display orange overall early warning, and the situation that severe landslide exists on the whole slope body 31 is shown;
when in use
Figure GDA0002612053930000174
Then computer 6 will NyThe maximum distance between two severe landslide points of severe landslide points is recorded as Ly,maxUsing computer 6 to obtain NyThe center of the maximum distance between two severe landslide points in the severe landslide points is taken as the origin, and L is taken asy,maxIs the number of ramp body monitoring points in a circular area of diameter and is recorded as M's,bWhen is coming into contact with
Figure GDA0002612053930000175
When the computer 6 controls the display screen to display the orange local early warning, the slope body 31 is indicated to be Ly,maxA local severe landslide situation may exist for a circular area of diameter;
when in use
Figure GDA0002612053930000176
And
Figure GDA0002612053930000177
when the slope body 31 is in a severe landslide state, the computer 6 controls the display screen to display red overall early warning, and the situation that the slope body 31 is in a severe landslide state is shown;
when in use
Figure GDA0002612053930000178
Then computer 6 will NfBetween two very severe points of a very severe landslideThe maximum spacing is recorded as Lf,maxUsing computer 6 to obtain NfThe center of the maximum distance between two very severe landslide points of the very severe landslide points is taken as the origin, Lf,maxThe number of slope monitoring points in a circular area of diameter is recorded as Ms,bWhen is coming into contact with
Figure GDA0002612053930000179
In time, the computer 6 controls the display screen to display the local early warning of red color, which indicates that L is used in the slope body 31f,maxA circular area of diameter may have a locally very severe landslide situation.
In this embodiment, in step 302, the method for obtaining the azimuth angle of the ith steady body monitoring point at the ith sampling time is the same as the method for obtaining the azimuth angle of the jth slope body monitoring point at the ith sampling time, and the specific process for obtaining the azimuth angle of the jth slope body monitoring point at the ith sampling time is as follows:
step 3021, monitoring the magnetic induction intensity in the X-axis direction, the magnetic induction intensity in the Y-axis direction, and the magnetic induction intensity in the Z-axis direction by the three-axis magnetic field sensor 2 in the jth azimuth monitor according to the preset sampling time, sending the monitored magnetic induction intensity value in the X-axis direction, the monitored magnetic induction intensity value in the Y-axis direction, and the monitored magnetic induction intensity value in the Z-axis direction to the microcontroller 1, and recording the magnetic induction intensity value in the X-axis direction acquired at the ith sampling time as the magnetic induction intensity value in the Z-axis direction by the microcontroller 1
Figure GDA0002612053930000181
Recording the magnetic induction intensity value in the Y-axis direction acquired at the ith sampling time as Yi jRecording the magnetic induction intensity value in the Z-axis direction acquired at the ith sampling time
Figure GDA0002612053930000183
Wherein, the X-axis direction, the Y-axis direction and the Z-axis direction of the three-axis magnetic field sensor 2 form an XYZ coordinate system;
step 3022, monitoring the rotation angle around the X-axis and the rotation angle around the Y-axis by the three-axis gyroscope 3 in the jth azimuth monitor according to the preset sampling time, and performing interpolationThe monitored angle of rotation around the X-axis and the monitored angle of rotation around the Y-axis are sent to the microcontroller 1, and the microcontroller 1 records the angle of rotation around the X-axis collected at the ith sampling moment as a roll angle αiThe value of the angle of rotation around the Y axis direction collected at the ith sampling time is recorded as the pitch angle βi；
Step 3023, microcontroller 1 calculates the formula
Figure GDA0002612053930000184
And
Figure GDA0002612053930000185
obtaining the primary correction value of the magnetic induction intensity in the X-axis direction at the ith sampling moment
Figure GDA0002612053930000186
Primary correction value of magnetic induction intensity in Y-axis direction at ith sampling moment
Figure GDA0002612053930000187
And the primary correction value of the magnetic induction intensity in the Z-axis direction at the ith sampling moment
Figure GDA0002612053930000188
Wherein, XbIndicating the correction coefficient of magnetic induction in the X-axis direction, YbMagnetic induction correction coefficient, Z, representing the Y-axis directionbA magnetic induction correction coefficient indicating a Z-axis direction;
step 3024, microcontroller 1 calculates the formula
Figure GDA0002612053930000189
And
Figure GDA00026120539300001810
obtaining the magnetic induction intensity secondary correction value of the X-axis direction at the ith sampling moment
Figure GDA00026120539300001811
And the magnetic induction intensity secondary correction value of the Y-axis direction at the ith sampling moment
Figure GDA00026120539300001812
Step 3025, microcontroller 1 calculates the formula
Figure GDA00026120539300001813
And
Figure GDA00026120539300001814
obtaining the magnetic induction intensity cubic correction value in the X-axis direction at the ith sampling moment
Figure GDA00026120539300001815
And the third correction value of the magnetic induction intensity in the Y-axis direction at the ith sampling moment
Figure GDA00026120539300001816
Wherein the content of the first and second substances,xrepresents the temperature correction factor in the X-axis direction,yrepresents a Y-axis direction temperature correction factor;
step 3026, when
Figure GDA00026120539300001817
Then, the microcontroller 1 obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA00026120539300001818
When in use
Figure GDA00026120539300001819
Then, the microcontroller 1 obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA00026120539300001820
When in use
Figure GDA0002612053930000191
Then, the microcontroller 1 obtains the jth slope monitoring point at the ith sampling momentAngle between X-axis direction and magnetic north pole
Figure GDA0002612053930000192
When in use
Figure GDA0002612053930000193
Then, the microcontroller 1 obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA0002612053930000194
When in use
Figure GDA0002612053930000195
According to the formula, the microcontroller 1
Figure GDA0002612053930000196
Obtaining an included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA0002612053930000197
Wherein the content of the first and second substances,
Figure GDA0002612053930000198
the value range of (a) is-pi/2;
when in use
Figure GDA0002612053930000199
According to the formula, the microcontroller 1
Figure GDA00026120539300001910
Obtaining an included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure GDA00026120539300001911
Step 3027, microcontroller 1 calculates the formula
Figure GDA00026120539300001912
Obtaining an included angle between the jth slope monitoring point at the ith sampling moment and the geographic north pole along the X-axis direction
Figure GDA00026120539300001913
The azimuth angle of the jth slope monitoring point at the ith sampling moment is
Figure GDA00026120539300001914
Wherein, sigma represents the declination of the region where the slope body is located;
step 3028, the microcontroller 1 obtains the azimuth angle of the jth slope monitoring point at the ith sampling time
Figure GDA00026120539300001915
The data are sent out through the first wireless communication module 4, the computer 6 receives the data sent out by the first wireless communication module 4 through the second wireless communication module 5, and the computer 6 obtains the azimuth angle of the jth slope monitoring point at the ith sampling moment
Figure GDA00026120539300001916
Step 3029, according to the method described in steps 3021 to 3028, the computer 6 obtains the azimuth angle of the a-th steady body monitoring point at the ith sampling time
Figure GDA00026120539300001917
In this embodiment, the magnetic induction correction coefficient X in the X-axis direction in step 3023bMagnetic induction correction coefficient Y in Y-axis directionbAnd a magnetic induction intensity correction coefficient Z in the Z-axis directionbThe acquisition process is as follows:
step 30231, horizontally placing the orientation monitor, uniformly rotating the orientation monitor 360 degrees around the Z direction, monitoring the magnetic induction intensity in the X-axis direction, the magnetic induction intensity in the Y-axis direction and the magnetic induction intensity in the Z-axis direction by the three-axis magnetic field sensor 2 in the process that the orientation monitor is uniformly rotated 360 degrees around the Z direction, and sending the monitored magnetic induction intensity value in the X-axis direction, the monitored magnetic induction intensity value in the Y-axis direction and the monitored magnetic induction intensity value in the Z-axis direction to the microcontroller 1;
step 30232, the microcontroller 1 obtains the maximum value X of the magnetic induction intensity in the X-axis directionmaxMagnetic induction intensity maximum value X in X-axis directionminMagnetic induction intensity maximum value Y in Y-axis directionmaxMagnetic induction intensity maximum value Y in Y-axis directionminMaximum value of magnetic induction intensity Z in Z-axis directionmaxAnd the maximum value Z of the magnetic induction intensity in the Z-axis directionmin；
Step 30233 microcontroller 1 calculates the formula Xb＝(Xmax+Xmin)/2、Yb＝(Ymax+Ymin) (iii) 2 and Zb＝(Zmax+Zmin) (ii)/2, obtaining the magnetic induction intensity correction coefficient X in the X-axis directionbMagnetic induction intensity correction coefficient Y in Y-axis directionbAnd a magnetic induction intensity correction coefficient Z in the Z-axis directionb；
The temperature correction factor in step 3025 is obtained as follows:
step 30251, horizontally placing the orientation monitor, and obtaining a first test value of the magnetic induction intensity in the X-axis direction at the e-th sampling time by the method described in the steps 3021 and 3023 at the normal temperature of 25 ℃
Figure GDA0002612053930000201
And the magnetic induction intensity in the Y-axis direction at the e-th sampling moment corrects the first test value Y oncee (c)；
Step 30252, monitoring the ambient temperature of the slope by the temperature sensor 8, sending the monitored ambient temperature to the microcontroller 1, and obtaining the ambient temperature T by the microcontroller 1cAnd the data is sent out through the first wireless communication module 4, the computer 6 receives the data sent out by the first wireless communication module 4 through the second wireless communication module 5, and the computer 6 obtains the environmental temperature Tc；
Step 30253 placing the position monitor horizontally at an ambient temperature TcNext, according to the method described in step 3021 and step 3023, the magnetic induction in the X axis direction at the e-th sampling time is obtainedOnce correcting the second test value
Figure GDA0002612053930000203
And the magnetic induction intensity in the Y-axis direction at the e-th sampling moment is corrected once to obtain a second test value
Figure GDA0002612053930000207
Wherein E is a positive integer, E is more than or equal to 1 and less than or equal to E, E is a positive integer, and E is more than or equal to 100;
step 30254 microcontroller 1 based on
Figure GDA0002612053930000205
And
Figure GDA0002612053930000206
obtaining the temperature correction factor in the X-axis directionxAnd a temperature correction factor in the Y-axis directiony。
In this embodiment, the specific process of installing the position monitor in step 201, step 202, and step 203 is as follows:
step A, a stabilizing body monitoring point, a slope body monitoring point and a reference point are called as mounting points;
b, manufacturing a cement monitoring pier 30 with the length, the width and the height of 20cm, 20cm and 50 cm; pouring a vertical rod 20 in the base support on a cement monitoring pier 30, wherein the center of the vertical rod 20 is overlapped with the center of the cement monitoring pier 30;
c, excavating a monitoring pit with the length multiplied by the width multiplied by the height of 20cm multiplied by 60cm at the mounting point, and burying the cement monitoring pier 30 poured with the base support into the monitoring pit; wherein, the cement mortar is adopted between the peripheral side of the cement monitoring pier 30 and the peripheral side of the monitoring pit for compaction, and the centers of the monitoring pit, the cement monitoring pier 30 and the vertical rod 20 and the mounting point are positioned on the same straight line;
step D, earth backfilling and tamping the top of the cement monitoring pier 30 until the surface of the monitoring pit is flush with the ground surface where the monitoring pit is located;
e, adjusting the parallel between the adjusting bottom plate 17 and the circular base 11 through the adjusting part until the adjusting bottom plate 17 is in a horizontal state, and then fixing the adjusting bottom plate 17 and the circular base 11 through the locking part;
and F, mounting the position monitoring module 10 on the adjusting bottom plate 17.
As shown in fig. 5, 6, 7 and 8, in this embodiment, when the position monitor is installed on the monitoring point of the stabilizing body in step 201, the X axis on the position monitor of the stabilizing body is perpendicular to the tangential direction of the monitoring point of the stabilizing body and points to the bottom of the slope 31; wherein, the tangent of the monitoring point of the stabilizer is a tangent on the cross section along the monitoring point of the stabilizer;
when the position monitor is installed on the slope monitoring point in the step 202, the X axis of the position monitor is perpendicular to the tangential direction of the slope monitoring point and points to the bottom of the slope 31; wherein, the tangent of the slope monitoring point is a tangent on the cross section along the slope monitoring point;
when the azimuth monitor is installed on the reference monitoring point in step 203, the X axis of the reference azimuth monitor is parallel to the tangential direction of the reference monitoring point and points to the bottom of the slope body 31; wherein, the tangential direction of the reference monitoring point is consistent with the main sliding direction inclination direction PP' of the slope body.
In this embodiment, the tangent line of the jth slope monitoring point is QjThe tangent line of the j +1 th slope monitoring point is Qj+1。
In this embodiment, it should be noted that the X, Y, and Z axes coincide with the X, Y, and Z axes of the three-axis magnetic field sensor 2.
In this embodiment, the preset sampling time range is 2days to 10days, or during the actual use, the sampling time range can be adjusted according to the monitoring requirement.
In this embodiment, the slope body is divided into a stable region 9 and a sliding region 26 by on-site exploration in step 101.
In conclusion, the method is reasonable in design, firstly monitoring points are distributed, secondly, the azimuth monitor is erected, secondly, the slope body point displacement movement azimuth monitoring data are collected, the acquisition of the azimuth angle of the stabilizing body monitoring point and the azimuth angle of the slope body monitoring point is realized, and afterwards, the azimuth monitor data are processed, and the azimuth angle change value of the stabilizing body monitoring point and the azimuth angle change value of the slope body monitoring point are obtained; and finally, monitoring and early warning and judging the displacement and the direction of the slope body according to the azimuth angle change value of the stable body monitoring point and the azimuth angle change value of the slope body monitoring point to obtain the landslide condition of the slope body, so that a research basis is provided for the landslide stability evaluation and analysis of the slope body, the operation is easy, and the monitoring precision is high.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (6)

1. A method for monitoring displacement motion of a slope body point comprises a position monitor and a data processing module connected with the position monitor, wherein the position monitor comprises a base support and a position monitoring module (10) arranged on the base support, the base support comprises a vertical rod (20), a circular base (11) arranged at the top of the vertical rod (20) and an adjusting base arranged on the circular base (11), and the adjusting base comprises an adjusting bottom plate (17) for mounting the position monitoring module (10) and an adjusting part connected between the adjusting bottom plate (17) and the circular base (11);
the orientation monitoring module (10) comprises a shell and an electronic circuit board arranged in the shell, and a microcontroller (1), a first wireless communication module (4), a three-axis gyroscope (3) and a three-axis magnetic field sensor (2) for monitoring the azimuth angle of a monitoring point, which are integrated on the electronic circuit board, and a temperature sensor (8) for monitoring the ambient temperature of the slope body, wherein the first wireless communication module (4) is connected with the microcontroller (1), the output end of the three-axis magnetic field sensor (2) and the output end of the three-axis gyroscope (3) are both connected with the input end of the microcontroller (1), the data processing module comprises a computer (6) and a second wireless communication module (5) connected with the computer (6), the microcontroller (1) is in data wireless communication with a computer (6) through a first wireless communication module (4) and a second wireless communication module (5); the method is characterized by comprising the following steps:
step one, monitoring point layout:
step 101, dividing a slope body (31) into a stable area (9) and a sliding area (26); wherein the connecting line of the soil between the sliding area (26) and the stabilizing area (9) is a landslide perimeter (27);
102, arranging a plurality of longitudinal monitoring section lines (28) along the main sliding direction of a slope body (31), arranging a plurality of transverse monitoring section lines (25) along the direction perpendicular to the main sliding direction of the slope body, wherein the length from the two ends of the longitudinal monitoring section lines (28) to the stable region (9) after extending out of the landslide perimeter (27) is 5-10 m, and the length from the two ends of the transverse monitoring section lines (25) to the stable region (9) after extending out of the landslide perimeter (27) is 5-10 m;
setting a stable body monitoring point at the end point of the longitudinal monitoring section line (28) and the end point of the transverse monitoring section line (25), and setting a slope body monitoring point along the intersection of the landslide perimeter (27) and the longitudinal monitoring section line (28), the intersection of the landslide perimeter (27) and the transverse monitoring section line (25) and the intersection of the longitudinal monitoring section line (28) and the transverse monitoring section line (25) in the range of the sliding zone (26); wherein, the number of the stable body monitoring points is a plurality, the number of the slope body monitoring points is a plurality,
103, setting a reference monitoring point at the level of the slope foot of the slope body (31);
step two, erecting a position monitor:
step 201, respectively installing azimuth monitors on a plurality of stable body monitoring points; wherein, the position monitor installed on the monitoring point of the stabilizing body is recorded as the position monitor of the stabilizing body;
202, respectively installing azimuth monitors on a plurality of slope monitoring points;
step 203, installing an azimuth monitor on the reference monitoring point; wherein, the position monitor installed on the reference monitoring point is recorded as a reference azimuth meter;
step three, collecting slope point displacement motion azimuth monitoring data:
301, the multiple stabilizer monitoring points are respectively a1 st stabilizer monitoring point, a 2 nd stabilizer monitoring point, a1 st stabilizer monitoring point, an a nd stabilizer monitoring point, a. Wherein a and A are positive integers, a is more than or equal to 1 and less than or equal to A, and A is more than or equal to 3;
the multiple slope body monitoring points are respectively a1 st slope body monitoring point, a 2 nd slope body monitoring point, a.th slope body monitoring point, a jth slope body monitoring point, a.th slope body monitoring point and a jth slope body monitoring point, and the corresponding multiple stable body position monitors are respectively a1 st position monitor, a 2 nd position monitor, a.th position monitor and a jth position monitor; wherein J and J are positive integers, J is more than or equal to 1 and less than or equal to J, and J is more than 300;
step 302, the A stabilizer orientation monitor monitors the azimuth angles of the A stabilizer monitoring points respectively, wherein the a-th stabilizer orientation monitor monitors the azimuth angle of the a-th stabilizer monitoring point according to the preset sampling time, and the azimuth angle of the a-th stabilizer monitoring point at the ith sampling time is recorded as
Figure FDA0002612053920000021
And sent to the computer (6); wherein i is a positive integer;
j azimuth monitors respectively monitor the azimuth angle of J slope body monitoring points, wherein, the jth azimuth monitor monitors the azimuth angle of the jth slope body monitoring point according to the preset sampling time, and the azimuth angle of the jth slope body monitoring point at the ith sampling moment is obtained and recorded as
Figure FDA0002612053920000022
And sent to the computer (6);
the reference azimuth monitor monitors the azimuth angle of the reference point according to the preset sampling time, and the azimuth angle of the reference point at the ith sampling moment is obtained and recorded as the azimuth angle of the reference point
Figure FDA0002612053920000031
And sent to the computer (6); wherein the azimuth angle of the ith sampling time reference point is recorded
Figure FDA0002612053920000032
Azimuth of main slip direction at ith sampling moment
Figure FDA0002612053920000033
Step four, processing the data of the azimuth monitor:
step 401, the computer (6) according to the formula
Figure FDA0002612053920000034
Obtaining the azimuth angle change value of the a-th stable body monitoring point between the ith sampling moment and the (i-1) th sampling moment
Figure FDA0002612053920000035
Wherein the content of the first and second substances,
Figure FDA0002612053920000036
the azimuth angle of the alpha-th stabilizer monitoring point at the ith-1 sampling moment is represented; wherein i is more than or equal to 2;
the computer (6) sorts the azimuth angle change values of A stabilizer monitoring points between the ith sampling time and the (i-1) th sampling time from small to large to obtain the minimum azimuth angle change value of the stabilizer monitoring point between the ith sampling time and the (i-1) th sampling time
Figure FDA0002612053920000037
And the maximum value of the azimuth angle change of the monitoring point of the steady body between the ith sampling moment and the (i-1) th sampling moment
Figure FDA0002612053920000038
Step 402, the computer (6) according to the formula
Figure FDA0002612053920000039
Obtaining the average value of the variation of the azimuth angle of the monitoring points of the stabilizer at two adjacent sampling moments
Figure FDA00026120539200000310
Step 403, the computer (6) according to the formula
Figure FDA00026120539200000311
Obtaining the azimuth angle change value of the jth slope monitoring point between the ith sampling moment and the (i-1) th sampling moment
Figure FDA00026120539200000312
Step five, monitoring, early warning and judging the displacement and the orientation of the slope body point:
computer (6) pair
Figure FDA00026120539200000313
And
Figure FDA00026120539200000314
the judgment is carried out in the following specific process:
step 501, when j is equal to 1, the computer (6) pair
Figure FDA00026120539200000322
And
Figure FDA00026120539200000315
make a judgment when
Figure FDA00026120539200000316
And is
Figure FDA00026120539200000317
In the time, the computer (6) marks the 1 st slope monitoring point as a very serious landslide point, and the number of the very serious landslide points is NfAdding 1; wherein the number of severe landslides is NfIs zero;
when in use
Figure FDA00026120539200000318
And is
Figure FDA00026120539200000319
Then, the computer (6) marks the 1 st slope monitoring point as a severe landslide point, and the number of severe landslide points NyAdding 1; wherein the number of severe landslides is NyIs zero;
when in use
Figure FDA00026120539200000320
And is
Figure FDA00026120539200000321
When the computer (6) marks the 1 st slope monitoring point as a landslide point, the number of landslide points NhAdding 1; wherein the number of landslide points is NhIs zero;
when in use
Figure FDA0002612053920000041
And is
Figure FDA0002612053920000042
In the meantime, the computer (6) marks the 1 st slope monitoring point as a stable point, and the number of the stable points is NwAdding 1; wherein, the number of stabilization points NwIs zero;
step 502, according to the method described in step 501, until J equals J, the judgment of a plurality of slope monitoring points is completed, and the number N of severe landslide points is obtainedfNumber of severe landslides NyNumber of landslides NhAnd number of stable points Nw(ii) a Wherein N isf、NyAnd NhAre all positive integers;
step 503, when
Figure FDA0002612053920000043
And
Figure FDA0002612053920000044
when the computer (6) controls the display screen to displayBlue overall early warning is carried out, which indicates that no landslide condition exists on the whole slope body (31);
when in use
Figure FDA0002612053920000045
And
Figure FDA0002612053920000046
when the landslide is caused, the computer (6) controls the display screen to display yellow overall early warning, and the situation that the landslide exists on the whole slope body (31) is described;
when in use
Figure FDA0002612053920000047
Then the computer (6) will NhThe maximum distance between two of the landslide points is recorded as Lh,maxUsing a computer with NhThe center of the maximum distance between two of the landslide points is taken as the origin and L is taken ash,maxThe number of slope monitoring points in a circular area of diameter is recorded as Ms,hWhen is coming into contact with
Figure FDA0002612053920000048
When the slope is in use, the computer (6) controls the display screen to display the local yellow early warning, and the L in the slope body (31) is indicatedh,maxA local landslide situation may exist for a circular area of diameter;
when in use
Figure FDA0002612053920000049
And
Figure FDA00026120539200000410
when the slope body (31) is seriously landslide, the computer (6) controls the display screen to display orange overall early warning, and the situation that the slope body (31) is seriously landslide is indicated;
when in use
Figure FDA00026120539200000411
Then the computer (6) will NyThe maximum distance between two severe landslide points of severe landslide points is recorded as Ly,maxBy usingThe computer (6) obtains NyThe center of the maximum distance between two severe landslide points in the severe landslide points is taken as the origin, and L is taken asy,maxIs the number of ramp body monitoring points in a circular area of diameter and is recorded as M's,bWhen is coming into contact with
Figure FDA00026120539200000412
When the slope is in use, the computer (6) controls the display screen to display orange local early warning to show that the slope body (31) is Ly,maxA local severe landslide situation may exist for a circular area of diameter;
when in use
Figure FDA00026120539200000413
And
Figure FDA00026120539200000414
when the landslide is serious, the computer (6) controls the display screen to display red overall early warning, and the situation that the slope body (31) has serious landslide is shown as a whole;
when in use
Figure FDA0002612053920000051
Then the computer (6) will NfThe maximum distance between two very severe landslide points of a very severe landslide point is designated Lf,maxObtaining N by using a computer (6)fThe center of the maximum distance between two very severe landslide points of the very severe landslide points is taken as the origin, Lf,maxThe number of slope monitoring points in a circular area of diameter is recorded as Ms,bWhen is coming into contact with
Figure FDA0002612053920000052
When the slope is in use, the computer (6) controls the display screen to display the red local early warning, and the L in the slope body (31) is indicatedf,maxA circular area of diameter may have a locally very severe landslide condition;
in step 302, the method for obtaining the azimuth angle of the ith steady body monitoring point at the ith sampling time is the same as the method for obtaining the azimuth angle of the jth slope body monitoring point at the ith sampling time, and the specific process for obtaining the azimuth angle of the jth slope body monitoring point at the ith sampling time is as follows:
step 3021, monitoring the magnetic induction intensity in the X-axis direction, the magnetic induction intensity in the Y-axis direction and the magnetic induction intensity in the Z-axis direction by the three-axis magnetic field sensor (2) in the jth azimuth monitor according to preset sampling time, sending the monitored magnetic induction intensity value in the X-axis direction, the monitored magnetic induction intensity value in the Y-axis direction and the monitored magnetic induction intensity value in the Z-axis direction to the microcontroller (1), and recording the magnetic induction intensity value in the X-axis direction acquired at the ith sampling time as the microcontroller (1)
Figure FDA0002612053920000057
Recording the magnetic induction intensity value in the Y-axis direction acquired at the ith sampling time as Yi jRecording the magnetic induction intensity value in the Z-axis direction acquired at the ith sampling time
Figure FDA0002612053920000058
Wherein, X-axis direction, Y-axis direction and Z-axis direction of the three-axis magnetic field sensor (2) form an XYZ coordinate system;
step 3022, monitoring the angle of rotation around the X-axis direction and the angle of rotation around the Y-axis direction by the triaxial gyroscope (3) in the jth azimuth monitor according to preset sampling time, sending the monitored angle of rotation around the X-axis direction and the monitored angle of rotation around the Y-axis direction to the microcontroller (1), and recording the angle of rotation around the X-axis direction collected at the ith sampling time as a roll angle α by the microcontroller (1)iThe value of the angle of rotation around the Y axis direction collected at the ith sampling time is recorded as the pitch angle βi；
Step 3023, the microcontroller (1) generates a formula
Figure FDA0002612053920000053
And
Figure FDA0002612053920000054
obtaining the primary correction value of the magnetic induction intensity in the X-axis direction at the ith sampling moment
Figure FDA0002612053920000055
Primary correction value of magnetic induction intensity in Y-axis direction at ith sampling moment
Figure FDA0002612053920000056
And the primary correction value of the magnetic induction intensity in the Z-axis direction at the ith sampling moment
Figure FDA0002612053920000061
Wherein, XbIndicating the correction coefficient of magnetic induction in the X-axis direction, YbMagnetic induction correction coefficient, Z, representing the Y-axis directionbA magnetic induction correction coefficient indicating a Z-axis direction;
step 3024, the microcontroller (1) generates a formula
Figure FDA0002612053920000062
And
Figure FDA0002612053920000063
obtaining the magnetic induction intensity secondary correction value of the X-axis direction at the ith sampling moment
Figure FDA0002612053920000064
And the magnetic induction intensity secondary correction value Y of the Y-axis direction at the ith sampling momenti″j；
Step 3025, the microcontroller (1) generates a formula
Figure FDA0002612053920000065
And Yi″′j＝Yi″j×yObtaining the magnetic induction intensity cubic correction value in the X-axis direction at the ith sampling moment
Figure FDA0002612053920000066
And the third corrected value Y of the magnetic induction intensity in the Y-axis direction at the ith sampling momenti″′j(ii) a Wherein the content of the first and second substances,xrepresents the temperature correction factor in the X-axis direction,yrepresents a Y-axis direction temperature correction factor;
step 3026, when Y isi″′j＝0，
Figure FDA0002612053920000067
Then, the microcontroller (1) obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure FDA0002612053920000068
When Y isi″′j＝0，
Figure FDA0002612053920000069
Then, the microcontroller (1) obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure FDA00026120539200000610
When Y isi″′j＜0，
Figure FDA00026120539200000611
Then, the microcontroller (1) obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure FDA00026120539200000612
When Y isi″′j＞0，
Figure FDA00026120539200000613
Then, the microcontroller (1) obtains the included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure FDA00026120539200000614
When Y isi″′j＜0，
Figure FDA00026120539200000615
The microcontroller (1) is according to the formula
Figure FDA00026120539200000616
Obtaining an included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure FDA00026120539200000617
Wherein the content of the first and second substances,
Figure FDA00026120539200000618
the value range of (a) is-pi/2;
when Y isi″′j＞0，
Figure FDA00026120539200000619
The microcontroller (1) is according to the formula
Figure FDA00026120539200000620
Obtaining an included angle between the jth slope monitoring point at the ith sampling moment and the geomagnetic north pole along the X-axis direction
Figure FDA00026120539200000621
Step 3027, the microcontroller (1) generates a formula
Figure FDA0002612053920000071
Obtaining an included angle between the jth slope monitoring point at the ith sampling moment and the geographic north pole along the X-axis direction
Figure FDA0002612053920000072
The azimuth angle of the jth slope monitoring point at the ith sampling moment is
Figure FDA0002612053920000073
Wherein, sigma represents the declination of the region where the slope body is located;
step 3028, the microcontroller (1) obtains the azimuth angle of the jth slope monitoring point at the ith sampling time
Figure FDA0002612053920000074
The data are sent out through the first wireless communication module (4), the computer (6) receives the data sent out by the first wireless communication module (4) through the second wireless communication module (5), and the computer (6) obtains the azimuth angle of the jth slope monitoring point at the ith sampling moment
Figure FDA0002612053920000075
Step 3029, according to the method described in steps 3021 to 3028, the computer (6) obtains the azimuth angle of the a-th steady body monitoring point at the ith sampling time
Figure FDA0002612053920000076
2. A method of monitoring displacement movement of a point of a slope according to claim 1, characterised in that: the adjusting part comprises a guide post (19) which is arranged on the circular base (11) and penetrates through the adjusting bottom plate (17), a spring (12) which is sleeved on the guide post (19) and is positioned between the adjusting bottom plate (17) and the circular base (11), and a locking nut (21) which is sleeved on the extending end of the guide post (19).
3. A method of monitoring displacement movement of a point of a slope according to claim 2, characterised in that: be provided with the retaining member between adjusting bottom plate (17) and circular base (11), the quantity of retaining member is four, four the retaining member is including wearing to establish fixing screw (14) between adjusting bottom plate (17) and circular base (11) and cover and establish fixing nut (23) at the tip that fixing screw (14) stretched out circular base (11), and four fixing screw (14) are located the four corners of adjusting bottom plate (17), the quantity of guide pillar (19) is four, and four guide pillar (19) are located adjusting bottom plate (17) four corners and are close to fixing screw (14) and lay.
4. A method of monitoring displacement movement of a point of a slope according to claim 1, characterised in that: magnetic induction intensity correction coefficient X in X-axis direction in step 3023bMagnetic induction correction coefficient Y in Y-axis directionbAnd a magnetic induction intensity correction coefficient Z in the Z-axis directionbThe acquisition process is as follows:
step 30231, horizontally placing the orientation monitor, uniformly rotating the orientation monitor 360 degrees around the Z direction, monitoring the magnetic induction intensity in the X-axis direction, the magnetic induction intensity in the Y-axis direction and the magnetic induction intensity in the Z-axis direction by the three-axis magnetic field sensor (2) in the process that the orientation monitor is uniformly rotated 360 degrees around the Z direction, and sending the monitored magnetic induction intensity value in the X-axis direction, the monitored magnetic induction intensity value in the Y-axis direction and the monitored magnetic induction intensity value in the Z-axis direction to the microcontroller (1);
step 30232, obtaining the maximum magnetic induction intensity X in the X-axis direction by the microcontroller (1)maxMagnetic induction intensity maximum value X in X-axis directionminMagnetic induction intensity maximum value Y in Y-axis directionmaxMagnetic induction intensity maximum value Y in Y-axis directionminMaximum value of magnetic induction intensity Z in Z-axis directionmaxAnd the maximum value Z of the magnetic induction intensity in the Z-axis directionmin；
Step 30233, the microcontroller (1) calculates the formula Xb＝(Xmax+Xmin)/2、Yb＝(Ymax+Ymin) (iii) 2 and Zb＝(Zmax+Zmin) (ii)/2, obtaining the magnetic induction intensity correction coefficient X in the X-axis directionbMagnetic induction intensity correction coefficient Y in Y-axis directionbAnd a magnetic induction intensity correction coefficient Z in the Z-axis directionb；
The temperature correction factor in step 3025 is obtained as follows:
step 30251, horizontally placing the orientation monitor, and obtaining a first test value of the magnetic induction intensity in the X-axis direction at the e-th sampling time by the method described in the steps 3021 and 3023 at the normal temperature of 25 ℃
Figure FDA0002612053920000081
And the magnetic induction intensity in the Y-axis direction at the e-th sampling moment corrects the first test value Y oncee (c)；
Step 30252, monitoring the ambient temperature of the slope by the temperature sensor (8), sending the monitored ambient temperature to the microcontroller (1), and obtaining the ambient temperature T by the microcontroller (1)cThe data are sent out through the first wireless communication module (4), the computer (6) receives the data sent out by the first wireless communication module (4) through the second wireless communication module (5), and the computer (6) obtains the ambient temperature Tc；
Step 30253 placing the position monitor horizontally at an ambient temperature TcNext, according to the method described in step 3021 and step 3023, a second test value for once correction of the magnetic induction intensity in the X-axis direction at the e-th sampling time is obtained
Figure FDA0002612053920000082
And the magnetic induction intensity in the Y-axis direction at the e-th sampling moment is corrected once to obtain a second test value
Figure FDA0002612053920000083
Wherein E is a positive integer, E is more than or equal to 1 and less than or equal to E, E is a positive integer, and E is more than or equal to 100;
step 30254 the microcontroller (1) operating in accordance with
Figure FDA0002612053920000091
And
Figure FDA0002612053920000092
obtaining the temperature correction factor in the X-axis directionxAnd a temperature correction factor in the Y-axis directiony。
5. A method of monitoring displacement movement of a point of a slope according to claim 1, characterised in that: the specific process of installing the position monitor in step 201, step 202 and step 203 is as follows:
step A, a stabilizing body monitoring point, a slope body monitoring point and a reference point are called as mounting points;
b, manufacturing a cement monitoring pier (30) with the length, the width and the height of 20cm, 20cm and 50 cm; pouring a vertical rod (20) in the base support on a cement monitoring pier (30), wherein the center of the vertical rod (20) is superposed with the center of the cement monitoring pier (30);
c, excavating a monitoring pit with the length multiplied by the width multiplied by the height of 20cm multiplied by 60cm at the mounting point, and burying a cement monitoring pier (30) poured with the base support into the monitoring pit; the periphery of the cement monitoring pier (30) and the periphery of the monitoring pit are compacted by cement mortar filling and pressing, and the centers of the monitoring pit, the cement monitoring pier (30) and the vertical rod (20) and the mounting point are positioned on the same straight line;
d, backfilling earth at the top of the cement monitoring pier (30) and tamping until the surface of the monitoring pit is flush with the ground surface where the monitoring pit is located;
e, adjusting the parallel between the adjusting bottom plate (17) and the circular base (11) through the adjusting part until the adjusting bottom plate (17) is in a horizontal state, and then fixing the adjusting bottom plate (17) and the circular base (11) through the locking part;
and F, mounting the position monitoring module (10) on the adjusting bottom plate (17).
6. A method of monitoring displacement movement of a point of a slope according to claim 1, characterised in that: when the position monitor is installed on the stable body monitoring point in the step 201, the X axis on the stable body position monitor is vertical to the tangential direction of the stable body monitoring point and points to the bottom of the slope body (31); wherein, the tangent of the monitoring point of the stabilizer is a tangent on the cross section along the monitoring point of the stabilizer;
when the position monitor is installed on the slope body monitoring point in the step 202, the X axis of the position monitor is vertical to the tangential direction of the slope body monitoring point and points to the bottom of the slope body (31); wherein, the tangent of the slope monitoring point is a tangent on the cross section along the slope monitoring point;
when the azimuth monitor is installed on the reference monitoring point in the step 203, the X axis of the reference azimuth monitor is parallel to the tangential direction of the reference monitoring point and points to the bottom of the slope body (31); wherein, the tangential direction of the reference monitoring point is consistent with the inclination direction of the main sliding direction of the slope body.
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