CN114577134A - Wide-range all-weather landslide body inclination deformation monitoring device and method - Google Patents
Wide-range all-weather landslide body inclination deformation monitoring device and method Download PDFInfo
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- CN114577134A CN114577134A CN202210191999.7A CN202210191999A CN114577134A CN 114577134 A CN114577134 A CN 114577134A CN 202210191999 A CN202210191999 A CN 202210191999A CN 114577134 A CN114577134 A CN 114577134A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- G—PHYSICS
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
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- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention provides a wide-range all-weather landslide mass inclination deformation monitoring device and a method. In the one end of three support was fixed in the landslide body, the other end of three support respectively through the dowel steel with data monitoring device connects, take the photoelectric sensing board of coordinate to locate the laser generator below, photoelectric controller and laser generator and take the photoelectric sensing board electric connection of coordinate, wireless transmission device with photoelectric controller connects. The invention utilizes the characteristic that the gravity direction of the earth is always vertically and downwards unchanged, takes the gravity direction as the datum line of the deformation of the landslide body, and realizes the all-weather monitoring with high precision, wide range and no influence from the external climate and the general viewing condition.
Description
Technical Field
The invention relates to the field of geological landslide body inclination deformation monitoring, in particular to a wide-range all-weather landslide body inclination deformation monitoring device and method.
Background
In order to reduce serious harm caused by landslide disasters, scientific and accurate prediction and forecast are key points. The occurrence, development and evolution process of landslide is accompanied by the change of a large amount of macroscopically measurable physical information, such as surface displacement, deep displacement, surface inclination angle, rock and soil body pressure and the like. By monitoring the change of the physical information in real time, the forecasting of the running state of the landslide body can be timely and accurately realized.
The traditional monitoring technology mainly comprises a surface displacement monitoring technology and a deep displacement monitoring technology. Typical surface displacement monitoring technologies, such as GPS global positioning monitoring technologies that acquire absolute displacement of a ground measurement point through signal interaction between a navigation satellite and a ground receiver, require good ground visibility conditions, are more affected by external bad weather such as rainy days and foggy days, and the monitoring accuracy is greatly reduced due to the increase of observation distance. The typical deep displacement monitoring technology is a drilling hole inclination measuring technology which adopts a movable inclinometer to install a guide rail in a measuring pipe, wherein during each measurement, a movable probe with an inclination angle sensor is used for sweeping from top to bottom from the inside of the guide rail, the angle variation of each measuring point is recorded point by point, and the lateral displacement of each measuring point is finally calculated.
In recent years, a great deal of research work is carried out at home and abroad by using InSAR technology as one of modern novel technical means, and the research shows that: the technology can reflect the static information of the landslide body and the dynamic change rule of the landslide body, has the characteristics of large area, all weather and high precision, but landslide occurrence areas are mostly mountain areas, particularly southwest areas of China, the vegetation is dense, the InSAR technology is influenced by time-space and atmospheric delay and the like, and the monitoring result can not accurately reflect the deformation information of the landslide body.
Disclosure of Invention
The invention aims to provide a wide-range all-weather landslide body inclination deformation monitoring device and method, which solve the problems that drilling is needed in the traditional monitoring technology, the cost is high, the range of a monitoring instrument is small and the like, solve the problem that the deformation information of landslide body inclination cannot be accurately reflected by a monitoring result due to the fact that the current advanced monitoring technology such as an INSAR monitoring technology is influenced by bad weather and visibility conditions such as rainy days and foggy days, and realize all-weather monitoring with high precision, wide range and no influence of outside weather and visibility conditions.
In order to solve the technical problems, the invention adopts the following technical scheme:
a wide-range all-weather landslide mass inclination deformation monitoring device comprises a support, a dowel bar, a solar panel, a data monitoring device and a landslide mass deformation data analysis and early warning system, wherein the data monitoring device comprises a laser generator, a photoelectric sensing plate with coordinates, a photoelectric controller and a wireless transmission device; one end of each support is fixed in the landslide body, the other end of each support is connected with the data monitoring device through a dowel bar, the photoelectric sensing plate with the coordinates is arranged below the laser generator, the photoelectric controller is electrically connected with the laser generator and the photoelectric sensing plate with the coordinates, and the wireless transmission device is connected with the photoelectric controller; the device comprises a photoelectric sensing plate with coordinates, a wireless transmission device, a landslide body deformation data analysis and early warning system and a landslide body deformation data analysis and early warning system, wherein the photoelectric sensing plate with coordinates is used for sensing plane coordinates after a light path emitted by a laser generator deviates from an initial path after a data monitoring device deforms when a landslide body is inclined and deformed, the wireless transmission device is used for wirelessly transmitting the plane coordinates sensed by the photoelectric sensing plate with coordinates to the landslide body deformation data analysis and early warning system, and the landslide body deformation data analysis and early warning system is used for calculating the landslide body inclination deformation according to the received plane coordinates, drawing the change relation of the landslide body inclination deformation along with monitoring time, and analyzing the sliding direction and the sliding trend of the landslide body.
Furthermore, the three supports are connected at the installation positions of the landslide body to form an equilateral triangle, the length of each support is larger than 1.0m, one end of each support is embedded into the landslide body and poured by concrete, and the other end of each support is exposed and fixed with a hinged support of a hinge.
Furthermore, the number of the dowel bars is three, one end of each dowel bar is connected with the hinged support exposed out of the support through a hinge, and the other end of each dowel bar is rigidly connected with the data monitoring device to form a stable triangular support, so that the data monitoring device is ensured to be suspended in the air and not to be in contact with the ground.
Furthermore, solar panel is located data monitoring devices upper surface, provides the power energy for data monitoring devices.
Furthermore, the cable of the solar panel is connected with the photoelectric controller and the power supply of the wireless transmission device, and the cable of the laser generator is connected with the photoelectric controller.
Furthermore, the shape of the data monitoring device is an airtight cylindrical barrel, the upper portion of the cylindrical barrel is a top cover plate, the upper surface of the top cover plate is fixedly provided with a device connected with the solar panel, three suspension devices are mounted on the lower surface of the top cover plate and arranged in an equilateral triangle mode, the suspension devices are used for suspending a laser generator, the laser direction emitted by the laser generator is always consistent with the gravity direction under the action of gravity, the bottom of the cylindrical barrel is provided with a photoelectric sensing plate with coordinates, and the laser emitted by the laser generator vertically shoots on the photoelectric sensing plate with coordinates.
Furthermore, the height of the cylinder is 1.0m, the diameter of the cylinder is 0.5m, the cylinder is formed by welding three main ribs with the length of 1.0m and three circular stirrups with the diameter of 0.5m, the three main ribs are uniformly arranged around the cylinder, and the three stirrups are arranged at the upper part, the middle part and the lower part of the main ribs.
Furthermore, the photoelectric controller is used for controlling the emission frequency of the laser generator and the formation of a photoelectric sensing signal, and wirelessly transmitting the plane coordinate sensed by the photoelectric sensing plate with the coordinate to the landslide body deformation data analysis and early warning system.
A wide-range all-weather landslide body inclination deformation monitoring method is carried out by using the device, and the method comprises the following steps:
step 1: carrying out field investigation on the landslide body, making a monitoring scheme, and selecting the position of a monitoring point;
and 2, step: installing a support: taking 3 points on a circumference taking a monitoring point as a circle center and taking R as a radius, connecting the 3 points to form an equilateral triangle line, and fixing the three supports on corresponding positions of the three points respectively to enable the three supports and the sliding mass to form a whole;
and 3, step 3: taking three dowel bars, wherein one end of each dowel bar is connected with the exposed end of the support through a hinge, the other end of each dowel bar is rigidly connected with the side surface of the upper part of the data monitoring device, and the data monitoring device is not in contact with the surface of the sliding mass;
and 4, step 4: adjusting various parameters of the photoelectric controller, starting the wireless transmission device, setting an inclined deformation threshold, adjusting the initial position of a light spot, and transmitting the initial position to a background landslide mass inclined deformation data analysis and early warning system for storage;
and 5: the whole monitoring system is started, in the monitoring process, if the landslide body is unevenly deformed, the oblique deformation of the landslide body is transmitted to the data monitoring device through the support and the dowel bar, the data monitoring device is enabled to be obliquely deformed, the gravity direction of the laser generator deviates from the initial gravity direction, the coordinate of the laser irradiated on the photoelectric sensing plate with the coordinate is changed, the light spot coordinate is transmitted to a background landslide body oblique deformation data analysis early warning system in real time to be processed, analyzed and compared, the inclination angle value is calculated, the sliding direction of the landslide body can be further determined, and when the deformation amount or the deformation rate exceeds a threshold value, the system sends an early warning signal.
Furthermore, in the data processing and analyzing process of the landslide body inclination deformation data analyzing and early warning system, firstly, an oxyz is assumed as a global coordinate system of the cylinder body, the inclination and the inclination angle of the upper plane after deformation are respectively alpha and beta, namely, the upper plane rotates around the z axis anticlockwise by alpha, and rotates around the x axis anticlockwise by beta;
the real-time coordinates of the three points A ', B ', and C ' in the local coordinate system are respectively
And
let coordinates of the three points A ', B ', and C ' in the global geodetic coordinate be
And
the conversion relationship between the global coordinates and the local coordinates is as follows:
after obtaining the global coordinates of the three points a ", B", and C ", a spatial plane passing through the three points is first constructed by the three points, and the unit normal vector of the plane under the global coordinates is (l, m, n):
note AThe coordinates of the three points B and C in the global geodetic coordinate are
And
the relationship between the local coordinates and the global coordinates is as follows:
substituting the global coordinates of the A, B and the C into equation (2) respectively, to obtain the following equation:
solving simultaneous equations to obtain (l, m, n):
the inclination alpha and the inclination angle beta of the upper plane and the lower plane after the cylinder is inclined and deformed can be calculated and obtained:
β＝arcsin(n)
the method utilizes the characteristic that the gravity direction is always vertically downward unchanged, the inclined deformation of the landslide body is transmitted through the support and the connecting rod to cause the data monitoring device to rotate, and the photoelectric sensing device in the data monitoring device is used for sensing the coordinate position change of the light spot to predict the inclined deformation condition of the landslide body.
The device is used for monitoring the slope deformation of the landslide body, and the main advantages are embodied in the following aspects:
(1) the method is suitable for slope body inclination deformation monitoring under the condition of complex weather, and overcomes the defect that the deformation monitoring result of the latest popular inSAR technology is greatly influenced by bad weather such as foggy days, rainy days and the like;
(2) the measuring range and the measuring resolution of the invention are related to the diameter and the height of the cylinder body of the data monitoring device, the measuring resolution is in direct proportion to the height of the cylinder, the larger the height is, the higher the resolution is, the larger the diameter of the cylinder is, the distance between the laser generator and the inner wall of the cylinder is correspondingly increased, the larger the measuring range is, and the defects that the traditional inclined deformation monitoring method such as a drilling inclinometer has small measuring range and a landslide body is easily damaged when inclined deformation is larger are overcome;
(3) the precision is high, the sliding direction of the sliding mass can be accurately predicted, and time is won for prevention and control of the sliding mass;
(4) the depth of a sliding surface does not need to be known, and the defect that the traditional inclined deformation monitoring method such as a drilling inclinometer and a multipoint displacement meter requires that a monitoring base point is positioned in an immovable rock body is overcome;
(5) drilling is not needed, the cost is relatively low, the operation is simple, and the method is suitable for complex landforms;
(6) the monitoring data is transmitted wirelessly, and all-weather online monitoring is achieved.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of a wide-range all-weather landslide body inclination deformation monitoring device of the present invention;
FIG. 2 is the coordinates of the support in the initial state, i.e. the initial state before the inclined deformation, according to the embodiment of the present invention;
fig. 3 is a schematic diagram of coordinate change after the embodiment of the invention is deformed.
In the figure: the device comprises a support 1, a dowel bar 2, a solar panel 3, a top cover plate 4, a laser generator 5, a data monitoring device 6, a photoelectric sensing plate 7 with coordinates, a photoelectric controller 8, a wireless transmission device 9 and a landslide body deformation data analysis and early warning system 10.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the landslide mass inclination deformation monitoring device of the present invention comprises a support 1, a dowel bar 2, a solar panel 3, a data monitoring device 6 and a landslide mass inclination deformation data analysis and early warning system 10, wherein the data monitoring device 6 comprises a laser generator 5, a photoelectric sensing plate 7 with coordinates, a photoelectric controller 8 and a wireless transmission device 9, the photoelectric controller 8 is electrically connected with the laser generator 5 and the photoelectric sensing plate (7) with coordinates, and is configured to control the emission frequency of the laser generator 5 and the formation of photoelectric sensing signals, and convert analog signals into photoelectric numerical signals; the wireless transmission device 9 is connected with the photoelectric controller 8 and is used for wirelessly transmitting the sensed plane coordinates (photoelectric numerical signals) to the landslide body deformation data analysis and early warning system 4 for processing, and the landslide body inclination deformation data analysis and early warning system 10 is used for calculating deformation according to the received plane coordinates, drawing the change trend of the deformation along with monitoring time and judging the change condition of the landslide body according to the change trend.
The number of the support seats 1 is three, the material used for each support seat 1 is an anti-corrosion rigid material, the support seats are not easy to deform, I-shaped steel or angle steel can be adopted, and the length of each support seat 1 is larger than 1.0 m. The three supports 1 are fixed on the landslide body, connecting lines of the positions of the three supports 1 form 1 equilateral triangle, and the size of the coverage area of the three supports can be comprehensively determined according to factors such as the terrain and the landform of the landslide body. One end of the support 1 is inserted into the landslide body to be fixed and is poured by concrete, the other end of the support 1 is exposed for 20cm, and the end head of the exposed end is fixed with a hinged support of a hinge.
The number of the dowel bars 2 is three, one end of each dowel bar is connected with the fixed hinge hinged support of the support 1 through a hinge, the other end of each dowel bar is rigidly connected with the upper part of the data monitoring device 6, and the three dowel bars 2 form a triangular support to support the data monitoring device 6, so that the data monitoring device 6 is not in contact with the ground and cannot shake under the action of the outside.
The data monitoring device 6 is a closed cylinder with a height of 1.0m and a diameter of 0.5 m. The cylinder is formed by welding three main reinforcements with the length of 1.0m and three circular stirrups with the diameter of 0.5m, the three main reinforcements are uniformly arranged around the cylinder, and the three stirrups are arranged at the upper part, the middle part and the lower part of the main reinforcements. The circular top apron 4 that cylinder section of thick bamboo upper portion is diameter 0.5m, meet fixedly with the main muscle, the device that the last fixed surface of top apron 4 is connected with solar panel 3, the three linkage of lower surface mounting of top apron 4, three linkage are equilateral triangle and arrange, and the equal distance is 10cm apart from apron edge, and linkage is used for hanging laser generator 5, and under the action of gravity, the laser direction that laser generator launched 5 remains unanimous with the direction of gravity all the time.
The cylinder is also internally provided with a photoelectric sensing plate 7 with coordinates, a photoelectric control system 8 and a wireless transmission device 9, and laser emitted by the laser generator 5 vertically irradiates the photoelectric sensing plate 7 with coordinates at the lower part of the cylinder. The photoelectric sensing plate 7 with coordinates is fixed at a position 20cm high from the bottom of the cylindrical barrel. The photoelectric sensing plate 7 with coordinates and the bottom plate of the cylinder form an inner space of 20cm for installing a photoelectric controller 8 and a wireless transmission device 9, and the photoelectric controller 8 and the wireless transmission device 9 can be installed on the inner surface of the bottom of the cylinder. The landslide mass inclination deformation data analysis and early warning system 10 is installed in a computer at the background and is in wireless communication with the wireless transmission device 9 of the data monitoring device 6.
The cable conductor of solar panel 3 is drawn through the inner wall of upper portion aperture along the cylinder and is connected with photoelectric controller 8 and wireless transmission device 9's power, and laser generator 5's cable is drawn along the cylinder inner wall and is connected with photoelectric controller 8. The cylinder is sealed by an anticorrosive material, so that the suspended natural drooping laser generator 5 is prevented from shaking due to external action (such as natural wind).
When the landslide body is inclined and deformed, the support 1 and the landslide body move together, the support 1 and the data monitoring device 6 are connected into a whole through the force transmission rod 2, the deformation of the support 1 is transmitted to the data monitoring device 6 through the force transmission rod 2, the data monitoring device 6 is inclined and deformed, the path of a light ray emitted by a naturally drooping laser generator 5 in the data monitoring device 6 deviates from an initial path and is sensed by a photoelectric sensing plate 7 with coordinates in the data monitoring device 6, the sensed plane coordinates are transmitted to a landslide body deformation data analysis and early warning system 10 through a wireless transmission device 9 to be processed, the deformation is calculated, the change trend of the deformation along with the monitoring time is drawn, and the change condition of the landslide body is further judged.
The embodiment of the invention also provides a wide-range all-weather landslide mass inclination deformation monitoring method, which is carried out by adopting the wide-range all-weather landslide mass inclination deformation monitoring device, and the method comprises the following steps:
step 1: and carrying out field investigation on the landslide body, making a monitoring scheme, and selecting the position of a monitoring point.
Step 2: installing a support 1: the three supports 1 are respectively fixed on the corresponding positions of the three points, so that the three supports and the sliding body form a whole.
And step 3: taking three dowel bars 2, wherein one end of each dowel bar 2 is connected with the exposed end of the support 1 through a hinge, and the other end of each dowel bar 2 is rigidly connected with a main rib on the side surface of the upper part of the data monitoring device 6, so that the data monitoring device 2 cannot be in surface contact with the landslide body;
and 4, step 4: adjusting various parameters of the photoelectric controller 8, such as the emission frequency of a laser generator, starting the wireless transmission device 9, setting a deformation threshold, adjusting the initial position of a light spot, and transmitting the initial position to the landslide mass deformation data analysis and early warning system 4 at the background for storage.
And 5: and starting the whole monitoring system. In the monitoring process, if the landslide body is deformed unevenly, the inclined deformation of the landslide body is transmitted to a data monitoring device 6 through a support 1 and a force transmission rod 2, the data monitoring device 6 rotates to cause the gravity direction of a laser generator 5 to deviate from the initial gravity direction, the coordinates of laser irradiated on a photoelectric sensing plate 7 with coordinates are changed, light spot coordinates are transmitted to a background landslide body inclined deformation data analysis and early warning system 10 in real time to be processed, analyzed and compared, and when the inclined deformation amount or the deformation rate exceeds a threshold value, the system sends out an early warning signal.
In the data processing and analyzing process, firstly, it is assumed that oxyz is a global coordinate system of the cylinder (as shown in fig. 2), the inclination and the inclination of the deformed upper plane are respectively α and β, i.e. the upper plane rotates counterclockwise around the z-axis and rotates counterclockwise around the x-axis, and the real-time coordinates of three points A ", B" and C "in a local coordinate system are respectively
And
let the coordinates of the three points A ', B ', and C ' in the global geodetic coordinate be
And
the conversion relationship between the global coordinates and the local coordinates is as follows:
after obtaining the global coordinates of the three points a ", B", and C ", a spatial plane passing through the three points is first constructed by the three points, and the unit normal vector of the plane under the global coordinates is (l, m, n):
let the coordinates of the three points A, B and C in global geodetic coordinates be
And
the relationship between the local coordinates and the global coordinates is as follows:
by substituting the global coordinates of the three points A, B and C into equation (2), the following equation can be obtained:
solving simultaneous equations to obtain (l, m, n)
The inclination angles alpha and beta of the deformed upper and lower planes can be calculated and obtained:
β＝arcsin(n)
the invention utilizes the characteristic that the gravity direction is always vertically unchanged downwards, the slope deformation of the slope body is transmitted to the data monitoring device through the transmission of the support and the dowel bar, so that the data monitoring device rotates (slope deformation), the laser generator in the data monitoring device emits laser to change the position of the photoelectric sensing plate under the action of gravity, the photoelectric sensing device in the data monitoring device senses the change of the light spot position, and the position coordinate is transmitted to the slope body slope deformation data analysis and early warning system at the background through the wireless transmission device for processing, analysis and comparison, thereby predicting the slope deformation condition of the slope body. The device is used for monitoring the slope body inclination deformation, does not need drilling, has the advantages of large range, high precision and the like, is suitable for monitoring the slope body in a complex mountain area with poor visibility conditions, does not reduce the accuracy of a monitoring result due to bad weather, can accurately forecast the inclination deformation and the direction of the slope body, solves the problem that the traditional monitoring method or the current hot monitoring method at home and abroad is influenced by the visibility conditions or the climate on the monitoring result, has large monitoring range, and can forecast the sliding degree and the sliding direction of the slope body.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a wide range all-weather landslide body slope deformation monitoring devices which characterized in that: the device comprises a support (1), a dowel bar (2), a solar panel (3), a data monitoring device (6) and a landslide mass deformation data analysis and early warning system (10), wherein the data monitoring device (6) comprises a laser generator (5), a photoelectric induction plate (7) with coordinates, a photoelectric controller (8) and a wireless transmission device (9); one end of each of the three supports (1) is fixed in a landslide body, the other end of each of the three supports (1) is connected with the data monitoring device (6) through a dowel bar (2), the photoelectric sensing plate (7) with coordinates is arranged below the laser generator (5), the photoelectric controller (8) is electrically connected with the laser generator (5) and the photoelectric sensing plate (7) with coordinates, and the wireless transmission device (9) is connected with the photoelectric controller (8); the slope body inclination deformation data analysis and early warning system (10) is used for calculating slope body inclination deformation according to received plane coordinates, and drawing the change relation of the slope body inclination deformation along with monitoring time and analyzing the slip direction and the slip trend of the slope body.
2. The wide range all-weather landslide body inclination deformation monitoring device of claim 1, wherein: the three supports (1) are connected at the installation positions of the landslide body to form an equilateral triangle, the length of each support (1) is larger than 1.0m, one end of each support is embedded into the landslide body and poured by concrete, and the other end of each support is exposed and fixed with a hinged support of a hinge.
3. The wide range all-weather landslide body inclination deformation monitoring device of claim 2, wherein: the number of the dowel bars (2) is three, one end of each dowel bar (2) is hinged with the hinged support exposed out of the support (1), the other end of each dowel bar is rigidly connected with the data monitoring device (6), a stable triangular support is formed, and the data monitoring device (6) is ensured to be suspended in the air and not to be in contact with the ground.
4. The wide-range all-weather landslide body inclination deformation monitoring device of claim 1, wherein: solar panel (3) are located data monitoring devices (6) upper surface, provide the power energy for data monitoring devices (6).
5. The wide-range all-weather landslide body inclination deformation monitoring device of claim 4, wherein: the cable of the solar panel (3) is connected with the photoelectric controller (8) and the power supply of the wireless transmission device (9), and the cable of the laser generator (5) is connected with the photoelectric controller (8).
6. The wide-range all-weather landslide body inclination deformation monitoring device of claim 4, wherein: the data monitoring device (6) is an airtight cylindrical barrel in shape, the upper portion of the cylindrical barrel is provided with a top cover plate (4), the upper surface of the top cover plate (4) is fixedly provided with a device connected with the solar panel (3), the lower surface of the top cover plate (4) is provided with three suspension devices, the three suspension devices are arranged in an equilateral triangle mode and are used for suspending the laser generator (5), the laser direction emitted by the laser generator is always consistent with the gravity direction under the action of gravity, the bottom of the cylindrical barrel is provided with a photoelectric sensing plate (7) with coordinates, and the laser emitted by the laser generator (5) vertically irradiates the photoelectric sensing plate (7) with the coordinates.
7. The wide-range all-weather landslide body inclination deformation monitoring device of claim 6, wherein: the height of the cylinder is 1.0m, the diameter of the cylinder is 0.5m, the cylinder is formed by welding three main reinforcements with the length of 1.0m and three circular stirrups with the diameter of 0.5m, the three main reinforcements are uniformly arranged around the cylinder, and the three stirrups are arranged at the upper part, the middle part and the lower part of each main reinforcement.
8. The wide-range all-weather landslide body inclination deformation monitoring device of claim 1, wherein: the photoelectric controller (8) is used for controlling the emission frequency of the laser generator (5) and the formation of a photoelectric sensing signal, and wirelessly transmitting the plane coordinate sensed by the photoelectric sensing plate (7) with the coordinate to the landslide body deformation data analysis and early warning system (4).
9. A method for monitoring the inclination deformation of a wide-range all-weather sliding mass, which is carried out by using the device of any one of claims 1 to 8, and which comprises the following steps:
step 1: carrying out field investigation on the landslide body, making a monitoring scheme, and selecting the position of a monitoring point;
step 2: mounting support (1): taking 3 points on a circumference taking a monitoring point as the center of a circle and taking R as the radius, connecting the 3 points to form an equilateral triangle line, and respectively fixing three supports (1) at corresponding positions of the three points to enable the three supports and a sliding mass to form a whole;
and step 3: taking three dowel bars (2), wherein one end of each dowel bar (2) is connected with the exposed end of the support (1) through a hinge, the other end of each dowel bar (2) is rigidly connected with the side face of the upper part of the data monitoring device (6), and the data monitoring device (6) is not in contact with the surface of the landslide body;
and 4, step 4: adjusting various parameters of a photoelectric controller (8), starting a wireless transmission device (9), setting an inclined deformation threshold, adjusting the initial position of a light spot, and transmitting the initial position to a background landslide body inclined deformation data analysis and early warning system (10) for storage;
and 5: the whole monitoring system is started, in the monitoring process, if the landslide body is unevenly deformed, the landslide body is obliquely deformed and is transmitted to the data monitoring device (6) through the support (1) and the dowel bar (2), so that the data monitoring device (6) is obliquely deformed, the gravity direction of the laser generator (5) deviates from the initial gravity direction, the coordinates of the laser irradiated on the photoelectric sensing plate with the coordinates are changed, the light spot coordinates are transmitted to the landslide body oblique deformation data analysis early warning system (10) at the background in real time for processing, analyzing and comparing, the inclination angle value is calculated, the sliding direction of the landslide body can be further determined, and when the deformation amount or the deformation rate exceeds a threshold value, the system sends out an early warning signal.
10. The method for monitoring the inclination deformation of the wide-range all-weather sliding mass according to claim 9, wherein the method comprises the following steps:
in the data processing and analyzing process, an analysis and early warning system (10) for slope body inclination deformation data firstly assumes oxyz as a global coordinate system of a cylinder body, and the inclination of an upper plane after deformation are respectively alpha and beta, namely, the upper plane rotates around the z axis anticlockwise by alpha and rotates around the x axis anticlockwise by beta;
the real-time coordinates of the three points A ', B ', and C ' in the local coordinate system are respectively
And
let coordinates of the three points A ', B ', and C ' in the global geodetic coordinate be
And
the transformation relationship between the global coordinates and the local coordinates is as follows:
after obtaining the global coordinates of the three points a ", B", and C ", a spatial plane passing through the three points is first constructed by the three points, and the unit normal vector of the plane under the global coordinates is (l, m, n):
let the coordinates of the three points A, B and C in global geodetic coordinates be
And
the relationship between the local coordinates and the global coordinates is as follows:
the global coordinates of the three points A, B and C are respectively substituted into the formula (2), and the following formula is obtained:
solving simultaneous equations to obtain (l, m, n):
the inclination alpha and the inclination angle beta of the upper plane and the lower plane after the cylinder is inclined and deformed can be calculated and obtained:
β＝arcsin(n)
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