CN117268331B - Slope multi-parameter monitoring equipment based on Beidou and optical fiber sensing technology - Google Patents
Slope multi-parameter monitoring equipment based on Beidou and optical fiber sensing technology Download PDFInfo
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- CN117268331B CN117268331B CN202311548639.9A CN202311548639A CN117268331B CN 117268331 B CN117268331 B CN 117268331B CN 202311548639 A CN202311548639 A CN 202311548639A CN 117268331 B CN117268331 B CN 117268331B
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- 239000002689 soil Substances 0.000 claims abstract description 459
- 238000012806 monitoring device Methods 0.000 claims abstract description 127
- 238000006073 displacement reaction Methods 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 56
- 239000000835 fiber Substances 0.000 claims description 47
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- 238000009434 installation Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
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Abstract
A slope multi-parameter monitoring device based on Beidou and optical fiber sensing technology belongs to the technical field of slope monitoring. The soil settlement monitoring device is installed on one side of the pressure detection device, and the multi-point displacement monitoring device is installed at the top of the pressure detection device. The pressure detection device comprises a longitudinal soil pressure monitoring device and a transverse soil pressure monitoring device, and the longitudinal soil pressure monitoring device is fixedly connected with the transverse soil pressure monitoring device. The invention aims to solve the problems that the pressure, layered settlement, three-dimensional displacement and multi-point displacement of a multilayer horizontal and vertical soil body can be monitored simultaneously, and the capacity of monitoring the single monitoring point position multi-parameter and the multi-point displacement of a side slope simultaneously is realized, the monitoring of the single point position and the multi-point displacement of the side slope is realized simultaneously by using the same equipment, the number of the equipment is greatly reduced, the fusion of the multiple monitoring parameters of the side slope is realized, and the difficulty of system integration is reduced.
Description
Technical Field
The invention relates to slope multi-parameter monitoring equipment based on Beidou and optical fiber sensing technology, and belongs to the technical field of slope monitoring.
Background
In recent years, the number of side slope disasters is continuously increased, higher requirements and larger demands are provided for side slope safety, the construction of a side slope structure health monitoring system is developed, and timely side slope instability and slump early warning is an important means for effectively reducing the road traffic potential hazards in mountain areas. The monitoring indexes of the slope structural health monitoring system are various, such as soil pressure, sedimentation, rainfall, water level and the like. Each monitoring index needs to be monitored by adopting a monitoring device, so that later system integration is difficult. Along with the further development of the technology, the multifunctional slope monitoring equipment is gradually developed, such as multi-parameter equipment, and can monitor soil displacement, inclination angle, vibration acceleration and the like. However, the multi-parameter device is simply built based on various monitoring principles, so that mutual checking of data among the multi-parameters is not really realized, the relevance among the data is to be further verified, for example, a multi-sensor integrated slope deformation automatic monitoring device disclosed in patent number CN201911330361.1, because the slope deformation monitoring comprises various monitoring indexes, the patent only meets the basic integration of deformation indexes, functions and monitoring indexes are still to be further enriched and perfected, the patent does not express the principles of various sensors, such as optics, electricity and acoustics, if the principles of various sensors are inconsistent, unified demodulation and analysis of later data are not really facilitated, the integration of monitoring indexes is seemingly realized, the integration of various sensors is simply realized, and for example, the multi-sensor integrated slope deformation automatic monitoring device disclosed in patent number CN202010665611.3 is not really realized, and only the inclination of a slope or the unevenness of a roadbed is considered in design, so that a lifting screw rod capable of lifting and lowering is arranged, so that the slope automatic monitoring device is more suitable for the installation and inclination monitoring of the slope.
Therefore, a new slope multi-parameter monitoring device based on the Beidou and optical fiber sensing technology is needed to solve the above technical problems.
Disclosure of Invention
The invention is developed to solve the problem that the pressure, the layered settlement and the three-dimensional displacement and the multi-point displacement of a multi-layer horizontal and longitudinal soil body can be monitored simultaneously, and the multi-point displacement monitoring device has the capability of simultaneously monitoring the multi-point displacement and the multi-point displacement of a single monitoring point of a side slope, and the monitoring of the single point displacement and the multi-point displacement of the side slope is realized simultaneously by using the same device, so that the number of the devices is greatly reduced, and the brief outline of the invention is provided below so as to provide basic understanding about certain aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.
The technical scheme of the invention is as follows:
the utility model provides a slope multiparameter monitoring facilities based on big dipper and optic fibre sensing technique, includes pressure detection device, soil body subsidence monitoring devices and multistage displacement monitoring devices, and soil body subsidence monitoring devices is installed to pressure detection device one side, and multistage displacement monitoring devices is installed at pressure detection device top.
Preferably: the multi-point displacement monitoring device comprises a connecting rod, a Beidou receiver and an intelligent ball machine, wherein two ends of the connecting rod are fixedly connected with the Beidou receiver and the pressure detection device respectively, and the intelligent ball machine is fixedly installed on the side wall of the connecting rod.
Preferably: the pressure detection device comprises a longitudinal soil pressure monitoring device and a transverse soil pressure monitoring device, and the longitudinal soil pressure monitoring device and the transverse soil pressure monitoring device are fixedly connected back to back.
Preferably: the longitudinal soil pressure monitoring device comprises a longitudinal soil pressure protection box and a longitudinal soil pressure monitoring unit, wherein at least one longitudinal soil pressure monitoring unit is arranged in the longitudinal soil pressure protection box.
Preferably: the longitudinal soil pressure monitoring unit comprises a longitudinal soil pressure transmission plate, a longitudinal soil pressure transmission rod, a first longitudinal soil inclined strut, a second longitudinal soil inclined strut, a longitudinal soil chute, a longitudinal soil tension-compression sensing rod and a longitudinal soil fiber grating strain sensor, wherein the longitudinal soil pressure transmission plate is arranged in a longitudinal soil pressure protection box in a sliding manner, the longitudinal soil pressure transmission rod is arranged on the longitudinal soil pressure transmission plate, the top of the first longitudinal soil inclined strut and the top of the second longitudinal soil inclined strut are hinged with the bottom of the longitudinal soil pressure transmission rod, the longitudinal soil chute is fixedly arranged at the bottom of the inner side of the longitudinal soil pressure protection box, the bottom of the first longitudinal soil inclined strut and the bottom of the second longitudinal soil inclined strut are slidably arranged in the longitudinal soil chute, the first longitudinal soil inclined strut and the second longitudinal soil inclined strut are fixedly connected through the longitudinal soil tension-compression sensing rod, and the longitudinal soil fiber grating strain sensor is arranged on the longitudinal soil tension-compression sensing rod.
Preferably: the transverse soil pressure monitoring device comprises a transverse soil pressure protection box and a transverse soil pressure monitoring unit, wherein the transverse soil pressure monitoring unit is arranged in the transverse soil pressure protection box, the number of the transverse soil pressure monitoring devices is at least one, and the transverse soil pressure monitoring devices are arranged on the back of the longitudinal soil pressure monitoring device in parallel.
Preferably: the transverse soil body pressure monitoring unit comprises a transverse soil body pressure transmission plate, a transverse soil body pressure transmission rod, a first transverse soil body inclined strut, a second transverse soil body inclined strut, a transverse soil body chute, a transverse soil body tension-compression sensing rod and a transverse soil body fiber grating strain sensor, wherein the transverse soil body pressure transmission plate is arranged in a transverse soil body pressure protection box in a sliding mode, the transverse soil body pressure transmission rod is arranged on the transverse soil body pressure transmission plate, the top of the first transverse soil body inclined strut and the top of the second transverse soil body inclined strut are hinged to the bottom of the transverse soil body pressure transmission rod, the transverse soil body chute is fixedly arranged at the bottom of the inner side of the transverse soil body pressure protection box, the bottom of the first transverse soil body inclined strut and the bottom of the second transverse soil body inclined strut are slidably arranged in the transverse soil body chute, and the first transverse soil body inclined strut and the second transverse soil body inclined strut are fixedly connected through the transverse soil body tension-compression sensing rod, and the transverse soil body tension-compression sensing rod is provided with the transverse soil body fiber grating strain sensor.
Preferably: the soil body subsides monitoring devices and includes that the soil body subsides protection casing, soil body subsides monitoring unit, soil body slip response piece and sliding pin, and the inside soil body subsides monitoring unit that is provided with of protection casing is subsided to the soil body, and the soil body slip response piece sets up in the soil body subsides the protection casing outside, has seted up the round pin pore on the protection casing is subsided to the soil body, and sliding pin slidable mounting is inside the pinhole, and both ends respectively with soil body slip response piece and soil body subsides monitoring unit fixed connection.
Preferably: the soil body subsides monitoring unit includes first slip stay cord, the second slip stay cord, first fixed pulley, the second fixed pulley, first tensile induction pole, second tensile induction pole, fixed stay bar and soil body subsides fiber grating strain sensor, inside left and right sides symmetry of soil body subsides protection casing installs first fixed pulley and second fixed pulley, inside fixed mounting of soil body subsides protection casing has fixed stay bar, fixed stay bar left and right sides respectively fixed mounting has first tensile induction pole and second tensile induction pole, first slip stay cord one end and sliding pin fixed connection, first slip stay cord other end pass behind the first fixed pulley with first tensile induction pole fixed connection, second slip stay cord one end and sliding pin fixed connection, the second slip stay cord other end pass behind the second fixed pulley with second tensile induction pole fixed connection, all be provided with soil body subsides fiber grating strain sensor on first tensile induction pole and the second tensile induction pole.
Preferably: the device is characterized in that a first mounting groove is formed in the longitudinal soil pressure monitoring device, a first mounting block is arranged on the transverse soil pressure monitoring device and is mounted in the first mounting groove, at least two second mounting blocks are arranged at the bottom of the soil settlement monitoring unit, at least one second mounting groove is formed in each of the longitudinal soil pressure monitoring device and the transverse soil pressure monitoring device, and the second mounting blocks are mounted in the second mounting grooves.
The invention has the following beneficial effects:
1. the invention can monitor the pressure, layered sedimentation, three-dimensional displacement and multi-point displacement of the multi-layer horizontal and longitudinal soil body at the same time, and has the capability of simultaneously monitoring single monitoring point position multi-parameter and multi-point position displacement of the slope;
2. the invention solves the problem that a plurality of devices are required to be arranged in large-scale slope monitoring, and simultaneously monitors single-point displacement and multi-point displacement of the slope by using the same device, thereby greatly reducing the number of devices, realizing the fusion of various monitoring parameters of the slope and reducing the difficulty of system integration;
3. the invention solves the problem of low utilization rate of monitoring data of the existing high-definition ball machine and the Beidou receiver, and provides a slope space single-point and multi-point displacement correction checking method based on the integration of a Beidou positioning technology and a multi-target and multi-layer sedimentation monitoring technology, wherein the data can be mutually checked and verified, and the slope safety can be evaluated more accurately and comprehensively.
Drawings
FIG. 1 is a perspective view of a slope multiparameter monitoring device based on Beidou and optical fiber sensing technology;
FIG. 2 is a state diagram of the use of a slope multiparameter monitoring device based on Beidou and optical fiber sensing technology;
FIG. 3 is a front view of a slope multiparameter monitoring device based on Beidou and fiber optic sensing technology;
FIG. 4 is a rear view of a slope multiparameter monitoring device based on Beidou and fiber optic sensing technology;
FIG. 5 is a side view of a slope multiparameter monitoring device based on Beidou and fiber optic sensing technology;
FIG. 6 is a schematic structural view of the soil settlement monitoring device of the present invention;
fig. 7 is a schematic structural view of the longitudinal soil pressure monitoring unit and the transverse soil pressure monitoring unit of the present invention.
In the figure: 1-pressure detection device, 2-soil settlement monitoring device, 3-multi-point displacement monitoring device, 4-longitudinal soil pressure monitoring device, 5-transverse soil pressure monitoring device, 6-first mounting groove, 7-first mounting block, 8-second mounting block, 9-second mounting groove, 21-soil settlement protection shell, 22-soil settlement monitoring unit, 23-soil sliding sensing piece, 24-sliding pin, 25-pin duct, 31-connecting rod, 32-Beidou receiver, 33-intelligent ball machine, 221-first sliding pull rope, 222-second sliding pull rope, 223-first fixed pulley, 224-second fixed pulley, 225-first stretching sensing rod, 226-second stretching sensing rod, 227-fixed stay rod, 228-soil body subsidence fiber grating strain sensor, 41-longitudinal soil body pressure protection box, 42-longitudinal soil body pressure monitoring unit, 421-longitudinal soil body pressure transmission plate, 422-longitudinal soil body pressure transmission rod, 423-first longitudinal soil body diagonal brace, 424-second longitudinal soil body diagonal brace, 425-longitudinal soil body chute, 426-longitudinal soil body tension-compression sensing rod, 427-longitudinal soil body fiber grating strain sensor, 51-transverse soil body pressure protection box, 52-transverse soil body pressure monitoring unit, 521-transverse soil body pressure transmission plate, 522-transverse soil body pressure transmission rod, 523-first transverse soil body diagonal brace, 524-second transverse soil body diagonal brace, 525-transverse soil body chute, 526-transverse soil body tension-compression sensing rod, 527-transverse soil mass fiber bragg grating strain sensor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The connection mentioned in the invention is divided into a fixed connection and a detachable connection, wherein the fixed connection is a conventional fixed connection mode such as a non-detachable connection including but not limited to a hemmed connection, a rivet connection, an adhesive connection, a welded connection and the like, the detachable connection is a conventional detachable mode such as a threaded connection, a snap connection, a pin connection, a hinge connection and the like, and when a specific connection mode is not limited explicitly, at least one connection mode can be found in the conventional connection mode by default, so that the function can be realized, and a person skilled in the art can select the device according to needs. For example: the fixed connection is welded connection, and the detachable connection is hinged connection.
The first embodiment is as follows: the embodiment is shown in combination with fig. 1-7, the slope multiparameter monitoring equipment based on the Beidou and optical fiber sensing technology comprises a pressure detection device 1, a soil body settlement monitoring device 2 and a multiparameter displacement monitoring device 3, wherein the soil body settlement monitoring device 2 is installed on one side of the pressure detection device 1, the multipass displacement monitoring device 3 is installed on the top of the pressure detection device 1, the pressure detection device is assembled through an anchoring structure design, and the slope multiparameter monitoring equipment can be customized according to the soil layer thickness of a slope during installation, has the advantages of simplicity in disassembly and convenience in assembly, and the quantity of each device can be customized and is independently buckled on the device.
The pressure detection device 1 comprises a longitudinal soil pressure monitoring device 4 and a transverse soil pressure monitoring device 5, wherein the longitudinal soil pressure monitoring device 4 and the transverse soil pressure monitoring device 5 are fixedly connected back to back, and the longitudinal soil pressure monitoring device 4 and the transverse soil pressure monitoring device 5 in the embodiment are arranged back to back.
As shown in fig. 2, the vertical direction, that is, the arrow direction in the drawing is the longitudinal direction of the longitudinal soil pressure monitoring device 4, and the horizontal direction in the vertical direction is the transverse direction of the transverse soil pressure monitoring device 5.
The vertical soil body pressure monitoring devices 4 are processed and have first mounting groove 6, be provided with first installation piece 7 on the horizontal soil body pressure monitoring devices 5, first installation piece 7 is installed in first mounting groove 6, and soil body subsides monitoring unit 22 bottom is provided with two at least second installation pieces 8, all be provided with at least one second mounting groove 9 on vertical soil body pressure monitoring devices 4 and the horizontal soil body pressure monitoring devices 5, second installation piece 8 and second mounting groove 9 quantity is the same, and the quantity of second installation piece 8 and second mounting groove 9 of this embodiment has two respectively, all installs a second installation piece 8 in every second mounting groove 9, second installation piece 8 is installed in second mounting groove 9.
The soil body subsides monitoring devices 2 including soil body subsides protection casing 21, soil body subsides monitoring unit 22, soil body slip sensing piece 23 and slide pin 24, the inside soil body subsides monitoring unit 22 that is provided with of protection casing 21, soil body slip sensing piece 23 sets up in the soil body subsides protection casing 21 outside, the last round pin pore 25 of having seted up of protection casing 21, slide pin 24 slidable mounting is in the inside of pinhole 25, and both ends respectively with soil body slip sensing piece 23 and soil body subsides monitoring unit 22 fixed connection, soil body subsides monitoring devices 2 quantity has a plurality of, and quantity is confirmed according to the layering condition of soil body, and one deck soil body subsides monitoring devices 2, and soil body subsides monitoring devices 2 of this embodiment are provided with 3, arrange side by side in pressure detection device 1 one side, and every soil body subsides monitoring devices 2 are close together, each other does not influence. The sliding pin 24 and the soil body sliding sensing piece 23 can slide back and forth on the pin hole 25 according to the sedimentation change of the outside soil body.
The soil settlement monitoring unit 22 comprises a first sliding pull rope 221, a second sliding pull rope 222, a first fixed pulley 223, a second fixed pulley 224, a first stretching induction rod 225, a second stretching induction rod 226, a fixed stay bar 227 and a soil settlement fiber grating strain sensor 228, wherein the first fixed pulley 223 and the second fixed pulley 224 are symmetrically arranged on the left side and the right side of the inside of the soil settlement protection shell 21, the fixed stay bar 227 is fixedly arranged in the soil settlement protection shell 21, the first stretching induction rod 225 and the second stretching induction rod 226 are respectively fixedly arranged on the left side and the right side of the fixed stay bar 227, one end of the first sliding pull rope 221 is fixedly connected with the sliding pin 24, the other end of the first sliding pull rope 221 passes through the first fixed pulley 223 and is fixedly connected with the first stretching induction rod 225, one end of the second sliding pull rope 222 is fixedly connected with the sliding pin 24, the other end of the second sliding pull rope 222 passes through the second fixed pulley 224 and is fixedly connected with the second stretching induction rod 226, and the soil settlement fiber grating strain sensor 228 is arranged on the first stretching induction rod 225 and the second stretching induction rod 226.
The soil body sliding sensing piece 23 is arc-shaped, can closely occlude the soil body and is tightly connected with the soil layer, when the soil layer subsides, the sensing piece can slide up and down along with the occurrence of the settlement, the outside of the soil body sliding sensing piece 23 is tightly occluded with the soil body, the inside drives the first sliding pull rope 221 through the sliding pin 24, the second sliding pull rope 222 is stressed, and the stress direction is changed through the first fixed pulley 223 and the second fixed pulley 224. The two ends of the stretching are respectively provided with a sliding pin 24 and a fixed pulley. The soil settlement fiber bragg grating strain sensor 228 is respectively adhered to the first stretching induction rod 225 and the second stretching induction rod 226. When the external soil body subsides, the soil body sliding sensing piece 23 is driven to slide, and then the first sliding pull rope 221 and the second sliding pull rope 222 are driven to stretch under stress, so that the first stretching sensing rod 225 and the second stretching sensing rod 226 are stretched and compressed, and the monitoring of soil body subsidence can be realized by reading the data change of the soil body subsidence fiber grating strain sensor 228 on the first stretching sensing rod 225 and the second stretching sensing rod 226. And accumulating the sedimentation data of the plurality of single-layer soil bodies to obtain the integral sedimentation variable quantity of the soil bodies. The settlement monitoring device 2 of the soil body with limited settlement of a single soil layer sets a limit of downward and upward sliding, namely a settlement monitoring range, and the range can be customized. And superposing the settlement amounts measured by the soil settlement monitoring devices 2 to obtain the total settlement amount of the deep soil at the point. The volume can check each other with the single-point three-dimensional displacement data monitored by the Beidou receiver, and the abnormality and the high-efficiency early warning of the device can be judged in the later period.
The multi-point displacement monitoring device 3 comprises a connecting rod 31, a Beidou receiver 32 and an intelligent ball machine 33, wherein two ends of the connecting rod 31 are fixedly connected with the Beidou receiver 32 and the pressure detection device 1 respectively, the intelligent ball machine 33 is fixedly installed on the side wall of the connecting rod 31, the Beidou receiver 32 is a Beidou GNSS receiver, and the intelligent ball machine 33 is a high-definition ball machine and is matched with a target.
The bottom of the connecting rod 31 is fixedly connected with the pressure detection device 1 through a bolt, the top of the connecting rod 31 is fixedly connected with the Beidou receiver 32 through a mounting seat, and the intelligent ball machine 33 is fixedly connected with the connecting rod 31 through a cross arm. The technical advantage of the Beidou high-precision point location is utilized to realize the three-dimensional displacement monitoring of the point. Wherein, the vertical displacement monitoring data of big dipper can carry out the check each other with multilayer soil body subsidence monitoring devices data.
Fluorescent targets are arranged at a plurality of positions of the side slope, each target can automatically generate light at regular time, and the intelligent ball machine 33 automatically acquires the position movement amount of the target through image processing by periodically sensing the light of each target, so that the deformation amount of a plurality of positions on the side slope is calculated. And further realizing large-scale multipoint sedimentation monitoring. The point where the device is located is taken as a datum point of the target, and displacement data of the point obtained through the Beidou receiver 32 and the three-dimensional sedimentation monitoring device is taken as a datum value. The three-dimensional deformation of the position of the intelligent ball machine is subtracted from the deformation of each point subjected to image processing, so that more accurate multi-point displacement deformation is obtained, and the problem that the whole monitoring data is abnormal due to the deformation of the point of the intelligent ball machine 33 is greatly avoided.
The longitudinal soil pressure monitoring device 4 comprises a longitudinal soil pressure protection box 41 and longitudinal soil pressure monitoring units 42, at least one longitudinal soil pressure monitoring unit 42 is installed inside the longitudinal soil pressure protection box 41, and the single longitudinal soil pressure monitoring units 42 are combined according to the direction and the height and are longitudinally arranged side by side.
The longitudinal soil pressure monitoring unit 42 comprises a longitudinal soil pressure transmission plate 421, a longitudinal soil pressure transmission rod 422, a first longitudinal soil diagonal brace 423, a second longitudinal soil diagonal brace 424, a longitudinal soil chute 425, a longitudinal soil tension-compression sensing rod 426 and a longitudinal soil fiber grating strain sensor 427, the longitudinal soil pressure transmission plate 421 is slidably arranged in the longitudinal soil pressure protection box 41, the longitudinal soil pressure transmission rod 422 is mounted on the longitudinal soil pressure transmission plate 421, the top of the first longitudinal soil diagonal brace 423 and the top of the second longitudinal soil diagonal brace 424 are hinged with the bottom of the longitudinal soil pressure transmission rod 422, the top of the first longitudinal soil diagonal brace 423, the top of the second longitudinal soil diagonal brace 424 and the bottom of the longitudinal soil pressure transmission rod 422 are hinged at one point, the longitudinal soil chute 425 is fixedly mounted at the bottom of the inner side of the longitudinal soil pressure protection box 41, the bottom of the first longitudinal soil diagonal brace 423 and the bottom of the second longitudinal soil diagonal brace 424 are slidably mounted in the longitudinal soil chute 425, the first longitudinal soil diagonal brace 423 and the second longitudinal soil diagonal brace 424 are fixedly connected with the longitudinal soil tension-compression sensing rod 426 through the longitudinal soil tension-compression sensing rod 426, and the longitudinal soil grating strain sensor 427 is fixedly mounted at the bottom of the longitudinal soil diagonal brace 426.
The longitudinal soil pressure transfer plate 421 is fixedly connected with the longitudinal soil pressure transfer rod 422, the longitudinal soil pressure transfer plate 421 converts external soil pressure into plate pressure, and the plate pressure is transferred to the first longitudinal soil diagonal bracing 423 and the second longitudinal soil diagonal bracing 424 through the longitudinal soil pressure transfer rod 422. The first longitudinal soil body diagonal bracing 423 and the second longitudinal soil body diagonal bracing 424 are connected with the longitudinal soil body pressure transmission rod 422 through bolts in a hinged mode, the middle of the first longitudinal soil body diagonal bracing 423 and the second longitudinal soil body diagonal bracing 424 are rotatable, the other ends of the first longitudinal soil body diagonal bracing 423 and the second longitudinal soil body diagonal bracing 424 are respectively limited in the longitudinal soil body sliding grooves 425 at the two ends through sliding blocks, and under the action of the longitudinal soil body pressure transmission rod 422, the first longitudinal soil body diagonal bracing 423 and the second longitudinal soil body diagonal bracing 424 can move back and forth towards the two sides, and further the longitudinal soil body pulling and pressing sensing rod 426 is driven to stretch and compress. The two ends of the longitudinal soil body pulling and pressing sensing rod 426 are fixedly connected with the bottom ends of the first longitudinal soil body inclined strut 423 and the second longitudinal soil body inclined strut 424, and move towards the limiting direction of the longitudinal soil body sliding groove 425 along with the first longitudinal soil body inclined strut 423 and the second longitudinal soil body inclined strut 424. The longitudinal soil body fiber grating strain sensor 427 is adhered to the longitudinal soil body tension-compression sensing rod 426, and can measure the tension and compression of the longitudinal soil body tension-compression sensing rod 426 in a limited direction in real time.
The number of the longitudinal soil pressure monitoring units 42 in this embodiment is 9, the number of the longitudinal soil pressure protection boxes 41 is 3, each 3 longitudinal soil pressure monitoring units 42 are arranged in parallel as a group, and are installed in the same longitudinal soil pressure protection box 41, the total number of the longitudinal soil pressure monitoring units 42 in each group is arranged as 3 groups side by side, each group of three longitudinal soil pressure monitoring units 42 shares the same longitudinal soil pressure transmission plate 421, that is, the longitudinal soil pressure transmission plates 421 of the three longitudinal soil pressure monitoring units 42 are integrally processed into one plate, the heights of the longitudinal soil pressure monitoring devices 4 are sequentially increased and arranged, that is, the transverse height of the longitudinal soil pressure transmission plate 421 of each next longitudinal soil pressure monitoring device 4 is greater than the transverse height of the longitudinal soil pressure transmission plate 421 of the previous longitudinal soil pressure monitoring device 4, and the longitudinal soil pressure monitoring units 421 are arranged in a step shape.
The lateral soil pressure monitoring unit 52 comprises a lateral soil pressure transmission plate 521, a lateral soil pressure transmission rod 522, a first lateral soil diagonal rod 523, a second lateral soil diagonal rod 524, a lateral soil chute 525, a lateral soil tension-compression sensing rod 526 and a lateral soil fiber grating strain sensor 527, wherein the lateral soil pressure transmission plate 521 is slidably arranged in the lateral soil pressure protection box 51, the lateral soil pressure transmission rod 522 is mounted on the lateral soil pressure transmission plate 521, the top of the first lateral soil diagonal rod 523 and the top of the second lateral soil diagonal rod 524 are hinged with the bottom of the lateral soil pressure transmission rod 522, the top of the first lateral soil diagonal rod 523, the top of the second lateral soil diagonal rod 524 and the bottom of the lateral soil pressure transmission rod 522 are hinged at one point, the lateral soil chute is fixedly mounted at the inner side bottom of the lateral soil pressure protection box 51, the bottom of the first lateral soil diagonal rod 523 and the bottom of the second lateral soil diagonal rod 524 are slidably mounted in the lateral soil chute 525, the first lateral soil diagonal rod 523 and the second lateral soil diagonal rod 524 are fixedly connected with the lateral soil tension-compression sensing rod 526 through the lateral soil tension-compression sensing rod 526, and the lateral soil strain sensor 526 is fixedly mounted on the lateral soil mass chute 526.
The lateral soil body pressure transmission plate 521 is fixedly connected with the lateral soil body pressure transmission rod 522, the lateral soil body pressure transmission plate 521 converts the external soil body pressure into plate pressure, and the plate pressure is transmitted to the first lateral soil body diagonal brace 523 and the second lateral soil body diagonal brace 524 through the lateral soil body pressure transmission rod 522. The first transverse soil body diagonal bracing 523 and the second transverse soil body diagonal bracing 524 are connected with the transverse soil body pressure transmission rod 522 through bolt hinges, the middle is rotatable, the other ends of the first transverse soil body diagonal bracing 523 and the second transverse soil body diagonal bracing 524 are respectively limited in the transverse soil body sliding grooves 525 at two ends through sliding blocks, and under the action of the transverse soil body pressure transmission rod 522, the two ends of the transverse soil body diagonal bracing can reciprocate, and then the transverse soil body tension-compression induction rod 526 is driven to stretch and compress. The two ends of the transverse soil body pulling and pressing sensing rod 526 are fixedly connected with the bottom ends of the first transverse soil body diagonal bracing 523 and the second transverse soil body diagonal bracing 524, and move towards the limiting direction of the transverse soil body sliding chute 525 along with the first transverse soil body diagonal bracing 523 and the second transverse soil body diagonal bracing 524. The transverse soil body fiber bragg grating strain sensor 527 is adhered to the transverse soil body pulling and pressing sensing rod 526, and can measure the stretching and compression of the transverse soil body pulling and pressing sensing rod 526 in a limited direction in real time.
The lateral soil pressure monitoring device 5 comprises a lateral soil pressure protection box 51 and lateral soil pressure monitoring units 52, the lateral soil pressure monitoring units 52 are arranged inside the lateral soil pressure protection box 51, the number of the lateral soil pressure monitoring devices 5 is at least one, the lateral soil pressure monitoring devices 5 are all arranged on the back of the longitudinal soil pressure monitoring device 4 in parallel, the number of the lateral soil pressure monitoring devices 5 in the embodiment is 3, the lateral soil pressure monitoring devices 5 are arranged in parallel from top to bottom, the heights of the lateral soil pressure monitoring devices 5 are sequentially increased and arranged, namely the lateral height of a lateral soil pressure transmission plate 521 of each next lateral soil pressure monitoring unit 52 is larger than the lateral height of a lateral soil pressure transmission plate 521 of the previous lateral soil pressure monitoring unit 52, the lateral soil pressure protection box 51 in the embodiment is 3, the lateral soil pressure monitoring units 52 are 6, and two lateral soil pressure monitoring units 52 are arranged side by side in the lateral soil pressure protection box 51. The 2 lateral soil pressure monitoring units 52 included in each lateral soil pressure monitoring device 5 are responsible for checking data mutually, and when the monitoring data are abnormal, the abnormality of the data can be judged by analyzing the data difference of the two devices. An anomaly alarm is triggered when two devices monitor data that differ by more than 5 microstrain.
The monitoring principle of the device is as transversal consistency when the device is subjected to longitudinal soil pressure. Each longitudinal soil pressure monitoring device 4 consists of 3 or more longitudinal soil pressure monitoring units 42, and the specific number can be customized according to the longitudinal depth of the side slope.
The soil body subsidence fiber grating strain sensor 228, the longitudinal soil body fiber grating strain sensor 427 and the transverse soil body fiber grating strain sensor 527 are all fiber grating strain sensors, each fiber grating strain sensor is connected in series through optical fibers, and is provided with a fiber grating temperature compensation sensor for counteracting the data influence of temperature on the fiber grating strain sensors.
The second embodiment is as follows: referring to fig. 1 to 7, a description is given of a method for installing a slope multi-parameter monitoring device according to the present embodiment, where the method is based on the Beidou and optical fiber sensing technology, and includes:
step 1, performing geological investigation on a monitored slope to obtain soil layer layering information of the slope;
step 2, customizing a soil settlement monitoring device 2 and a transverse soil pressure monitoring device 5 which can adapt to different soil layer heights;
step 3, excavating slope monitoring points, fixedly connecting the soil settlement monitoring device 2 and the transverse soil pressure monitoring device 5 in advance through anchor structure buckles, and putting the soil settlement monitoring device 2 and the transverse soil pressure monitoring device 5 which are assembled in advance into soil together so as to enable the soil to be fully contacted and meshed with the soil;
step 4, sequentially placing the soil body pressure monitoring devices 4, and fixedly connecting the soil body pressure monitoring devices with the soil body settlement monitoring devices 2 and the transverse soil body pressure monitoring devices 5 through the anchoring structures;
and 5, covering soil and compacting the whole lower structure of the assembled and placed pressure detection device 1.
And 6, fixedly mounting a connecting rod 31 on the top of the pressure detection device 1 by using a bolt, and sequentially mounting a Beidou receiver 32 and an intelligent ball machine 33, wherein the intelligent ball machine 33 is required to cover a fluorescence monitoring target in the cross section range.
The fluorescent targets are installed at other monitoring points only at the top and bottom of a certain line of the cross section, and sedimentation data of the points are sensed by the dome camera.
The Beidou receiver of the embodiment can realize monitoring of three-dimensional displacement XYZ of a single point location by using a global satellite navigation system, namely GNSS.
The fiber Bragg grating sensor of the embodiment realizes deformation monitoring of a monitored object to reflect the change of a monitoring index, belongs to one type of fiber Bragg grating sensor, acquires sensing information through the modulation of an external physical parameter to the fiber Bragg Bragg wavelength in the sensing process based on the fiber Bragg grating, and is a wavelength modulation type fiber Bragg sensor. The fiber bragg grating sensor can realize direct measurement of physical quantities such as temperature, strain and the like. The fiber grating wavelength is sensitive to temperature and strain at the same time, namely the temperature and the strain cause the fiber grating coupling wavelength to move at the same time, so that the temperature and the strain cannot be distinguished by measuring the fiber grating coupling wavelength movement. Therefore, the problem of cross sensitivity is solved, and the realization of differentiated measurement of temperature and stress is a precondition for the practical use of the sensor. The temperature and the stress are measured by a certain technology to realize the differential measurement of the temperature and the stress. The basic principle of the technology is that two or two sections of fiber gratings with different temperature and strain response sensitivities are utilized to form a double-grating temperature and fiber grating strain sensor, and the temperature and strain are solved by determining the temperature and strain response sensitivity coefficients of 2 fiber gratings and utilizing 2 binary one-time equations. The distinguishing measurement technology can be divided into two types, namely multi-fiber grating measurement and single-fiber grating measurement, the deformation sheet is arranged in the rod in the embodiment, the monitoring of the tension-compression deformation is realized to reflect the displacement of the soil body, and 1 fiber grating temperature sensor is arranged at the unstressed part of the device and used as a temperature compensation grating of the fiber grating strain sensor, so that the influence of the temperature on the strain sensor is eliminated.
It should be noted that, in the above embodiments, as long as the technical solutions that are not contradictory can be arranged and combined, those skilled in the art can exhaust all the possibilities according to the mathematical knowledge of the arrangement and combination, so the present invention does not describe the technical solutions after the arrangement and combination one by one, but should be understood that the technical solutions after the arrangement and combination have been disclosed by the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Slope multiparameter monitoring equipment based on big dipper and optical fiber sensing technique, its characterized in that: the soil settlement monitoring device comprises a pressure detection device (1), a soil settlement monitoring device (2) and a multi-point displacement monitoring device (3), wherein the soil settlement monitoring device (2) is installed on one side of the pressure detection device (1), and the multi-point displacement monitoring device (3) is installed on the top of the pressure detection device (1);
the multi-point displacement monitoring device (3) comprises a connecting rod (31), a Beidou receiver (32) and an intelligent ball machine (33), wherein two ends of the connecting rod (31) are fixedly connected with the Beidou receiver (32) and the pressure detection device (1) respectively, and the intelligent ball machine (33) is fixedly installed on the side wall of the connecting rod (31);
the pressure detection device (1) comprises a longitudinal soil pressure monitoring device (4) and a transverse soil pressure monitoring device (5), and the longitudinal soil pressure monitoring device (4) and the transverse soil pressure monitoring device (5) are fixedly connected back to back;
the soil body subsidence monitoring device (2) comprises a soil body subsidence protection shell (21), a soil body subsidence monitoring unit (22), a soil body sliding induction piece (23) and a sliding pin (24), wherein the soil body subsidence monitoring unit (22) is arranged in the soil body subsidence protection shell (21), the soil body sliding induction piece (23) is arranged on the outer side of the soil body subsidence protection shell (21), a pin duct (25) is formed in the soil body subsidence protection shell (21), the sliding pin (24) is slidably arranged in the pin duct (25), and two ends of the sliding pin are fixedly connected with the soil body sliding induction piece (23) and the soil body subsidence monitoring unit (22) respectively;
the transverse soil pressure monitoring device (5) comprises a transverse soil pressure protection box (51) and a transverse soil pressure monitoring unit (52), and the transverse soil pressure monitoring unit (52) is arranged in the transverse soil pressure protection box (51);
the longitudinal soil pressure monitoring device (4) comprises a longitudinal soil pressure protection box (41) and a longitudinal soil pressure monitoring unit (42);
the soil body subsides monitoring unit (22) includes first slip stay cord (221), second slip stay cord (222), first fixed pulley (223), second fixed pulley (224), first tensile sense pole (225), second tensile sense pole (226), fixed stay bar (227) and soil body subsides fiber grating strain sensor (228), first fixed pulley (223) and second fixed pulley (224) are installed to inside left and right sides symmetry of soil body subsides protection casing (21), fixed stay bar (227) are installed to inside fixed mounting of soil body subsides protection casing (21), first tensile sense pole (225) and second tensile sense pole (226) are installed to fixed stay bar (227) left and right sides respectively, first tensile sense pole (221) one end and sliding pin (24) fixed connection, first tensile sense pole (225) fixed connection after the other end passes first fixed pulley (223), second tensile sense pole (222) one end and sliding pin (24) fixed connection, second tensile sense pole (226) and second tensile sense pole (226) fixed connection, first tensile sense pole (228) are all set up on the tensile sense pole.
2. The slope multiparameter monitoring device based on Beidou and optical fiber sensing technology according to claim 1, wherein: the longitudinal soil pressure monitoring unit (42) comprises a longitudinal soil pressure transmission plate (421), a longitudinal soil pressure transmission rod (422), a first longitudinal soil inclined strut (423), a second longitudinal soil inclined strut (424), a longitudinal soil chute (425), a longitudinal soil tension-compression sensing rod (426) and a longitudinal soil fiber grating strain sensor (427), the longitudinal soil pressure transmission plate (421) is slidably arranged in the longitudinal soil pressure protection box (41), the longitudinal soil pressure transmission rod (422) is arranged on the longitudinal soil pressure transmission plate (421), the top of the first longitudinal soil inclined strut (423) and the top of the second longitudinal soil inclined strut (424) are hinged with the bottom of the longitudinal soil pressure transmission rod (422), the bottom of the longitudinal soil inclined strut (423) and the bottom of the second longitudinal soil inclined strut (424) are fixedly arranged at the inner side bottom of the longitudinal soil chute (425), the first longitudinal soil inclined strut (423) and the bottom of the second longitudinal soil inclined strut (424) are slidably arranged in the longitudinal soil chute (425), and the longitudinal soil tension-compression sensing rod (426) is fixedly connected with the longitudinal soil grating (427) through the longitudinal soil pressure sensing rod (426).
3. The slope multiparameter monitoring device based on Beidou and optical fiber sensing technology as set forth in claim 2, wherein: the soil pressure protection device is characterized in that at least one longitudinal soil pressure monitoring unit (42) is arranged in the longitudinal soil pressure protection box (41), the number of the longitudinal soil pressure monitoring units (42) is 3, the longitudinal soil pressure monitoring units are arranged at the back of the transverse soil pressure monitoring device (5) side by side from left to right, and the heights of the longitudinal soil pressure monitoring devices (4) are sequentially increased.
4. The slope multiparameter monitoring device based on Beidou and optical fiber sensing technology according to claim 1, wherein: the number of the transverse soil body pressure monitoring devices (5) is at least one, and the transverse soil body pressure monitoring devices are arranged on the back of the longitudinal soil body pressure monitoring devices (4) in parallel.
5. The slope multiparameter monitoring device based on Beidou and optical fiber sensing technology according to claim 4, wherein: the number of the transverse soil body pressure monitoring devices (5) is 3, the transverse soil body pressure monitoring devices (5) are arranged on the back of the longitudinal soil body pressure monitoring devices (4) from top to bottom in parallel, and the heights of the transverse soil body pressure monitoring devices (5) are sequentially increased.
6. The slope multiparameter monitoring device based on Beidou and optical fiber sensing technology according to any one of claims 1-5, wherein: the device is characterized in that the transverse soil pressure monitoring unit (52) comprises a transverse soil pressure transmission plate (521), a transverse soil pressure transmission rod (522), a first transverse soil inclined strut (523), a second transverse soil inclined strut (524), a transverse soil chute (525), a transverse soil tensile and compressive sensing rod (526) and a transverse soil fiber grating strain sensor (527), the transverse soil pressure transmission plate (521) is slidably arranged in the transverse soil pressure protection box (51), the transverse soil pressure transmission rod (522) is mounted on the transverse soil pressure transmission plate (521), the top of the first transverse soil inclined strut (523) and the top of the second transverse soil inclined strut (524) are hinged to the bottom of the transverse soil pressure transmission rod (522), the bottom of the first transverse soil inclined strut (523) and the bottom of the second transverse soil inclined strut (524) are fixedly mounted on the transverse soil chute (526), and the first transverse soil inclined strut (523) and the second transverse soil inclined strut (524) are slidably mounted in the transverse soil chute (526) through the transverse soil tensile sensing rod (526), and the transverse soil pressure sensor is fixedly connected to the transverse soil chute (526).
7. The slope multiparameter monitoring device based on Beidou and optical fiber sensing technology according to claim 6, wherein: the number of the soil body settlement monitoring devices (2) is multiple, and the number is determined according to the layering condition of the soil body.
8. The slope multiparameter monitoring device based on Beidou and optical fiber sensing technology according to claim 7, wherein: the soil body subsides monitoring unit (22) bottom and is provided with two at least second installation blocks (8), all be provided with at least one second mounting groove (9) on vertical soil body pressure monitoring device (4) and the horizontal soil body pressure monitoring device (5), second installation blocks (8) are installed in second mounting groove (9) on vertical soil body pressure monitoring device (4) and the horizontal soil body pressure monitoring device (5), be provided with first installation block (7) on horizontal soil body pressure monitoring device (5).
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| KR20120004817A (en) * | 2010-07-07 | 2012-01-13 | 주식회사 아이세스 | Soil pressure sensor using an optical fiber sensor |
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| KR20120004817A (en) * | 2010-07-07 | 2012-01-13 | 주식회사 아이세스 | Soil pressure sensor using an optical fiber sensor |
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