267 results about "Slope monitoring" patented technology

The invention discloses a wireless sensor network-based slope real-time security monitoring system and relates to the security monitoring field of geotechnical engineering. The system comprises a slope monitored area data acquisition layer, a data transmission layer and a remote security monitoring center, wherein the data acquisition layer comprises an information acquisition node, a routing node and a coordinator node; the data transmission layer is composed of a GPRS/CDMA data transmission device accessing the Internet, the observed data of all the sensor nodes are transmitted to a remote high-slope security monitoring center through the data transmission layer; and the remote security monitoring center is a Web back-stage management system which contains a treatment and display system for monitoring data, a remote operation system, an remote management system of the acquisition equipment, an early-warning and release system and a user management system. The system of the invention realizes complete digitization in intelligence sensing detection, transmission, reception and treatment, also realizes the real-time acquisition and secure transmission of slope data under harsh environment and provides reliable data for the health diagnosis of slope engineering, the establishment of early-warning standard and the control of landslide.

A slope monitoring and early warning system based on deformation data comprises a plurality of surface displacement devices and a communication base station. The surface displacement devices send collected data information to the communication base station, and data interaction is carried out between the communication base station and a far-end monitoring center. According to a slope monitoring and early warning method based on the deformation data, a slope stability computational formula is deduced according to measured point displacement values and angle deviation values through analysis on a slope deformation instability mechanism based on theories of rock and soil mechanics. Dangerousness states on a slope are judged according to slope stability coefficient indexes, and therefore dangerousness classification on the slope can have fixed indexes and standards. The slope monitoring and early warning method based on the deformation data is different from the existing displacement-time method that different slopes have different early warning displacement values.

In a method of critical displacement forecast based on the deformation failure mechanism of slope, a sliding surface displacement, a calculation based on status stability factors and a slope surface displacement are determined, and applied for forecast based on a thrust-type slope deformation mechanism, a key compartment division, a relation between stress and strain mechanics properties of sliding surface of geo-material, and an analysis of evolution characteristics at different points of the sliding surface. The method provides advantages of determining deformation values at different points of a sliding surface, a slope body and a slope surface during slope failures; describing the process of a progressive failure, deformations and force changes of a slope; combining slope monitoring values to perform the stability analysis and the calculation of the magnitude of the stability factors in different deformation statuses of the slope; and assessing the durability of protective measures to the slope.

The invention discloses a slide face boundary method for calculating the slope stability. In the slide face boundary method, only a slider is taken as a calculated object for slope stability analysis. The invention further discloses a comprehensive glide force-antislide force stability coefficient calculation method and a main glide force method based on the slide face boundary method. The method disclosed by the invention has the advantages that the non-convergence problem of an existing slope stability calculation method is solved, the slope step-by-step stability failure analysis, realizes easy calculation can be implemented, the calculation results with a conventional limited equilibrium slice method can be compared, and new stability coefficients have different physical significances, so that the current slope monitoring results can be applied to the slope stability evaluation.

The invention discloses a landslide internal displacement monitoring method based on a fiber grating. The monitored landslide internal deformation through combination of the fiber grating sensing technology and the conventional inclinometer causes bending deformation of an inclinometer pipe and then causes deformation of the fiber grating. The corresponding strain value can be accurately obtainedthrough the wavelength change of the fiber grating in real time by the fiber grating sensor and the fiber grating demodulator, then the displacement of the corresponding measuring point is calculatedthrough a strain-displacement differential calculation method and then the disturbance of the inclinometer pipe is accurately calculated. Implementation in onsite side slope monitoring is convenient,and the monitoring data are processed through the simple complex Simpson integration formula so that the deformation situation in the side slope can be accurately acquired. The method is simple in operation and easy to implement and can perform long-term real-time monitoring of the side slope so that the data processing method is simple and accurate and popularization practicality is high.

The invention provides a soil slope surface displacement monitoring and safety early warning method and belongs to the technical field of slope monitoring. The soil slope surface displacement monitoring and safety early warning method comprises the following steps of: 1) arranging laser displacement sensors on a slope to the measured and collecting the distance information between the laser displacement sensors and the fixed monitoring points of the surface of the slope; 2) transmitting the collected data to a remote monitoring center and calculating the displacement of monitoring points of the soil slope and a displacement rate; 3) judging the deformation stage of the soil slope according to calculated results in the step 2 and judging whether the deformation of the soil slope is in a steady deformation stage, or a time-dependent deformation stage or an accelerated failure stage; 4) judging the displacement stability of the soil slope in the time-dependent deformation stage and performing early warning according to judged results. The soil slope surface displacement monitoring and safety early warning method can relatively comprehensively describes nature and the change trend of the monitoring data of slope deformation and can reflect development processes of the slope deformation relatively truly, thereby providing objective basis for finding a deformation abnormal portion of the slope and for evaluating the safety and stability of the slope.

A dangerous side slope monitoring and early warning system disclosed by the present invention comprises a sensor unit, a first storage unit, a second storage unit, an early warning analysis unit and an early warning decision unit, wherein the sensor unit is used to detect the displacement, the soil pressure, the hourly rainfall and the daily rainfall of a side slope monitoring point, the first storage unit is used to detection data obtained by the sensor unit, and the second storage unit is used to store the geological environment data of the side slope monitoring point; the early warning analysis unit is used to determine whether to warn early according to the acquired data, and the early warning decision unit is used to mark the grades of the side slope dangerous case circumstances according to the determination results of the early warning analysis unit and send out the alarm information. The beneficial effects of the present invention are that the abnormal conditions of the side slopes can be monitored effectively, also a timely early warning effect can be realized, and the related personnel can adopt the prevention measures in advance.

The invention relates to a system and method for testing and evaluating slope stability. The system for testing and evaluating slope stability comprises a slope device, an underground water device, a rainfall device, a vibration device, a monitoring device and an evaluation device, wherein the slope device comprises a support frame, a baffle plate, a slope adjusting device and a groove; the underground water device comprises a left water tank and a right water tank; the rainfall device comprises a water pipe, a rainfall simulator, a valve and a pressure gauge; the vibration device comprises a shaking table; the monitoring device comprises a photographing unit and an optical fiber; the evaluation device comprises a data converter and an evaluation module; the evaluation module comprises a computer and processing software; the photographing unit and the groove are separately connected with the data converter through data lines; the optical fiber is connected with the data converter; the data converter transmits converted data to the evaluation module through another data line; and the evaluation module analyzes a received slope monitoring signal, carries out analysis and processing, and forms an evaluation result.

The invention discloses an acoustic emission monitoring method used for recognizing a rock slope glide plane. A waveguide rod array is arranged inside a rock slope; one waveguide rod embedded in a monitoring hole is filled with 0.1 m thick of cement mortar every other 3 m length of the waveguide rod; an acoustic emission sensor is installed at the end, on the ground, of each waveguide rod; acoustic emission signals generated from rock internal fractures are sent to cement mortar filling parts and then to the waveguide rods; the sensors at the ends of the waveguide rods receive the signals, and finally transmit the signals to an indoor wireless receiving base station through a wireless transmission device; positions, where the signals come from, of the waveguide rods can be fast determined through data analysis and marked with circles; and the trend of the glide plane can be inferred by connecting points with the densest circles on the waveguide rods. According to the acoustic emission monitoring method used for recognizing the rock slope glide plane, a large amount of workload of conventional slope monitoring can be omitted, all-weather automatic recording of the slope can be achieved and are not affected by the climate and weather, and reliable quantitative evaluation can be made on the glide trend of the slope.

The invention relates to the technical field of geological disaster monitoring, in particular to a mine side slope deformation monitoring and early warning system and an early warning method thereof. The early warning system is composed of a ground control subsystem, a space wireless communication network and a communication auxiliary subsystem of monitoring workers, wherein the ground control subsystem, the space wireless communication network and the communication auxiliary subsystem are used for carrying out communication connection. The ground control subsystem is composed of a GPS mine side slope monitoring subsystem and a GPS monitoring data processing subsystem. The GPS monitoring mine side slope subsystem comprises a set of displacement measuring robots, a receiving antenna, a data transmission module, a GPS receiver and a power supply system, wherein the GPS receiver is used for receiving mine side slope deformation data collected by the displacement measuring robots. Various data are collected in real time, the monitoring data are processed, and the uploaded data are fast and automatically stored, transmitted, updated, counted and managed. The mine side slope deformation monitoring and early warning system has the advantages that the mine side slope displacement is dynamically monitored in real time, and safety production of a mine is guaranteed.

The invention relates to an inversion determination method for rainfall type landslide shear strength parameters, and belongs to the technical field of slope engineering stability evaluation. The method comprises the following steps that 1, the basic characteristic value of the cohesive force cj and the internal friction angle (shown in the specification) of the side slope rock-soil body is determined; 2, the basic characteristic value of the side slope rock-soil body is obtained, 2, monitoring a slope monitoring point cumulative displacement value Si and rainfall intensity Qi; Step 3, determining the side slope underground water level Hi under different rainfall conditions at the ti moment; Step 4, determining a slope stability coefficient Fij under the basic characteristic parameter condition of all the c,(shown in the specification); 5, determining a slope stability coefficient F0i displacement equivalent monitoring variable Lambda i; 6, determining the correlation degree Lambda 0ibetween the slope stability coefficient F0i and the displacement equivalent monitoring variable Lambda i; And 7, determining the cohesive force cj and the internal friction angle (shown in the specification) of the side slope according to the grey correlation degree. According to the method, the calculation result is accurate, and the overall shear strength of the side slope can be better reflected. and moreover, the operation steps are easy to implement, and the calculation cost is lower than that of other determination methods.

The invention relates to a three dimensional displacement monitoring method for a strip mine side slope. According to the method, a three dimensional laser scanner is used for obtaining point cloud data of a side slope zone to be monitored of a strip mine, a three dimensional model of the side slope zone to be monitored is built, monitoring images of the side slope zone to be monitored are collected in real time via a monocular camera, and side slope monitoring sequence images can be obtained; control points are selected in a scope, covered by the side slope monitoring sequence images, of the side slope zone to be monitored; a direct linear transformation equation for mutual conversion between geodetic coordinates and image pixel two dimension coordinates is determined; an image local characteristic detecting and coupling algorithm is adopted, and matching characteristic points that are monitored in real time in the side slope monitoring sequence images are extracted, displacement of matching characteristic points in a current image and a previous among the side slope monitoring sequence images can be monitored in real time, and two dimension image displacement of the characteristic points in the side slope monitoring sequence images is converted into three dimension displacement of side slope points in a geodetic coordinate system.

The invention relates to a soil layer slope stability determining method based on an orthogonal strain ratio. The method comprises the following steps: step one, determining a slope most dangerous slip plane; step two, arranging a slope orthogonal strain monitoring grid; step three, performing monitoring and data recording on vertical and horizontal strain at each monitoring grid node; step four, determining a slope monitoring grid orthogonal strain ratio parameter; step five, determining a slope orthogonal strain ratio stability criterion and a slip plane plastic zone; step six, determining a slope body damage variable and a damage variable critical value; step seven, analyzing and evaluating slope overall stability; and step eight, determining a slope overall slip plane. The method provided by the invention can accurately determine a slope plastic zone and evaluate the slope stability, and has an important engineering application value in slope stability and land slide geological disaster monitoring early warning and control.

The invention provides an autonomic slope monitoring system. The system comprises a cylindrical shell which is composed of multiple cylindrical sections seal-connected with each other, an infrared pluviometer which is installed on the upper end of the cylindrical shell, measurement sensors which are respectively installed in the different cylindrical sections, a control module which is used for controlling work of parts and comprises a processor and a wireless module for receiving and transmitting a signal, wherein magnetic induction buttons connected to a control main board are arranged on the cylindrical shell, a power supply module which comprises a storage battery for providing power for operation of all the parts and an electric energy storage device, an energy collection device which comprises a collection chip and a charging management module and is used for collecting redundant electric power of the control main board and the power supply module and conveying the redundant electric power to the electric energy storage device, and an alarm device which is connected to the control module and is used for transmitting an alarm signal to the environment. The autonomic slope monitoring system has a high integrated level and ultra-low power consumption. The autonomic slope monitoring system realizes integration of a plurality of early warning modes according to geological disaster application characteristics.

The invention discloses a slope comprehensive monitoring system and monitoring method, which integrates the infrared monitoring technology, the real aperture radar scanning technology and the infrasound monitoring technology. When there is a moving object on the slope or a surface is displaced, infrared monitoring is disturbed and fed back to a slope warning system. The slope is scanned by a realaperture radar to determine whether the slope surface is displaced, and the stability is determined. Infrasound monitoring determines if cracks or slips occur inside the slope. When the slope is in anunstable state, an alarm is sent to alarms at both ends of a section where the slope is located to ensure the safety of an area where the slope is located. The invention has the beneficial effects that centralized and real-time monitoring of the slope can be achieved, the shortcomings that the existing slope monitoring methods are single and cannot feed real-time information back can be overcome;and the purpose of early warning of high slope instability can be achieved.

The present invention discloses an automatic integration railway slope monitoring system. The system comprises a remote transmission module for data timing transmission and monitoring, the remote transmission module is connected with a moisture monitoring module configured to measure moisture changing information, a soil pressure monitoring module configured to measure soil pressure in a soil body, a meteorology monitoring module configured to measure meteorology information and a deformation monitoring module configured to measure deformation, the moisture monitoring module comprises a surface layer soil body module and a deep layer soil body module, and the deformation monitoring module comprises a slope monitoring module and a settlement monitoring module. The automatic integration railway slope monitoring system can perform comprehensive monitoring of deep layer soil body moisture changing, surface layer soil body moisture changing, deep displacement changing, surface displacement deformation and meteorology information at the slope; and the automatic integration railway slope monitoring system can realize wireless transmission of monitoring data and ensure the data continuity, is more convenient and rapid than human-generated data and accurately measures the soil pressure changing condition in the slope.

The invention relates to the technical field of side slope monitoring, and discloses a side slope deviation monitoring and early-warning device. The side slope deviation monitoring and early-warning device comprises a platform, wherein a support mechanism is arranged at one side of a bottom end of the platform, a connection plate is arranged at the other side of the bottom end of the platform, a measurement mechanism is arranged between the support mechanism and the connection plate, a photovoltaic panel is arranged at a top end of the platform and is connected with an inverter, the inverter is arranged on the platform below the photovoltaic panel, an output end of the inverter is connected with a power supply, and an output end of the power supply is connected with the measurement mechanism. By the side slope deviation monitoring and early-monitoring device, a distance a between two receivers can be easily obtained, a distance c between a distance measurement device and the receiversalso can be measured by the distance measurement device, b can be calculated according to Pythagorean theorem, a dip angle A can be calculated according to a sine angle, the dip angle A is sent to a terminal by a signal transmitter and is used for a construction worker to consult, so that the construction worker can easily master a side slope deviation angle.

The invention provides a slope deformation three-dimensional monitoring system and method based on multiple sensors. According to the invention, complete surface slope monitoring executed by three-dimensional laser scanning and point position slope monitoring executed by multiple types of sensors are comprehensively applied; slope area grading division is determined through point cloud data analysis of three-dimensional laser scanning, and analysis is performed by combining multi-sensor data of monitoring point positions in different grading areas and utilizing an area applicable model, so that the stability conditions of the whole slope and each area are obtained, and the deformation degree and risk of the slope are analyzed and predicted. The method adapts to complex diversified structures and states of the side slope, effectively combines the overall condition of the side slope, and can accurately analyze and predict the stability state of the side slope.

The invention discloses a unidirectional stress sensor based on a liquid metal antenna. The sensor comprises a box (2), the box (2) internally includes two organic polymer cylinders (5) that can be compressed, the length of each organic polymer cylinder (5) equals the distance between two opposite surfaces of the box, the internal of the box is full of a filling material (7), each organic polymer cylinder (5) is provided with a micro channel (4), each micro channel (4) is filled with liquid metal, the liquid metal in the micro channels are electrically connected with coaxial feed lines (1), and the coaxial feed lines (1) are led out of a box packaging object (3). The invention also discloses a preparation method of the unidirectional stress sensor based on the liquid metal antenna. The sensor and the preparation method have the advantages that change of the liquid metal antenna can reflect bearing and deformation of the box effectively, the slope monitoring accuracy and reliability are improved, and the intensity of the liquid metal antenna is improved.

The invention discloses a side slope deformation monitoring system based on a satellite positioning technology. The side slope deformation monitoring system comprises a side slope monitoring subsystem, a communication base station, a data analysis subsystem, a background monitoring subsystem and a cloud server, wherein the slope monitoring subsystem and the data analysis subsystem are in communication connection through the communication base station, the data analysis subsystem is in communication connection with the background monitoring subsystem, and the background monitoring subsystem isin wireless connection with the cloud; the slope monitoring subsystem comprises a satellite signal receiving module, a soil pressure detection module, a slope settlement detection module, a void waterpressure detection module, a slope inclination detection module, a soil humidity detection module and a data acquisition module. Real-time positioning and data analysis are carried out on a slope monitoring part by utilizing satellite positioning and a combined calculation technology, the positioning precision is high, the monitoring effect is good, various data of the slope are detected throughvarious monitoring instruments, an auxiliary effect is achieved on deformation monitoring of the slope, the monitoring effect is further improved, and the monitoring accuracy is improved. Various information of the slope can be known conveniently.

The invention relates to an unmanned aerial vehicle railway slope monitoring and early warning system and method. The method comprises the following steps: acquiring and processing unmanned aerial vehicle high-definition images and laser point cloud data; determining the condition of a slope area; obtaining regional topographic data (DSM) and regional image data (DOM), and constructing a regional three-dimensional model; carrying out oblique photography data acquisition and three-dimensional surface real scene reconstruction, and high-density unmanned aerial vehicle laser point cloud data acquisition and three-dimensional surface real scene reconstruction; based on the high-precision three-dimensional earth surface real scene, extracting slope data; and carrying out on-site slope detection and early warning based on the slope data of the point cloud. Through the combination of the unmanned aerial vehicle and the laser radar equipment, the monitoring precision is improved, the measurement automation and non-contact measurement are realized, the cost is reduced, and the labor investment is reduced.

The invention discloses a multifunctional forced centering leg bracket which comprises a centering plate, supporting components and fixing components; a central hole is formed in the centering plate, a centering column is arranged in the central hole, a sheath is embedded between the centering column and the central hole, and a connecting piece is arranged at the bottom of the centering column; the axiality tolerance between the centering column and the central hole is plus or minus 0.01 mm; the supporting components comprise three leg bracket rod pieces, each leg bracket rod piece comprises a connecting rod, a fine-tuning structure and a retractable rod, which are connected from top to bottom, and each fine-tuning structure comprises a fine-tuning screw and lock nuts which are located at the two ends of the fine-tuning screw; the fixing components comprises fixing platforms and tapered spiral piles; and the upper ends of the connecting rods are hinged with the centering plate, and the lower ends of the retractable rods are hinged with the fixed platform. The multifunctional forced centering leg bracket has the characteristics of high centering precision, convenience in installation, good stability, high measurement speed, reusability and the like. The multifunctional forced centering leg bracket can be widely used for precise engineering surveying, foundation monitoring, slope monitoring, special engineering monitoring and the like.

The invention discloses a slide slope distribution monitoring device and the monitoring method thereof. The monitoring device comprises a monitoring sheet and a monitoring station, wherein the upper end of the monitoring sheet is an anchoring end fixed on the earth surface, a signal transmission end connected with the monitoring station is arranged on the anchoring end, at least three long-gauge strain sensing units are arranged in the monitoring sheet, and two sets of long-gauge strain sensing units are connected at a joint portion through a joint portion anchor bolt. The slide slope distribution monitoring device is simple in process, convenient for construction, low in cost and is durable and practical. The monitoring device and method can be widely applicable to the slide slope monitoring field of traffic, water power, mine slopes and other large rock projects.

The invention relates to a road slope deformation detection system and a method based on vehicle-mounted InSAR; the detection system comprises a data obtaining platform and a POS system used for measuring the platform attitude. The detection system can organically combine the high precision deformation detection capability of the InSAR with the time requirements of the road deformation detection,thus providing the fact, easy and accurate method for the road slope monitoring problem which needs to be urgently solved as a road safety problem. The detection system and method can carry out high precision detection on the road slope according to monitoring needs, thus providing very wide promotion prospects in the road safety monitoring aspects.

The invention provides a processing method of monitored elevation data of an open mine pit slope based on a measurement robot. The method comprises the following steps: obtaining monitored basic data of the open mine pit slope, which is acquired by the measurement robot; establishing a model of a height difference between a distance measuring optical path curve of the measurement robot and the ground, and an atmosphere vertical refraction physical quantity gradient model on a distance measuring optical path; obtaining an instrument height and a beacon height of the measurement robot; calculating the height difference from a monitoring base point subjected to atmosphere refraction revising and a monitoring point according to an included angle, a slope distance and a horizontal distance from the monitoring base point to the monitoring point, an atmosphere refraction coefficient on the distance measuring optical path curve and the instrument height and the beacon height of the measurement robot; obtaining an elevation of the revised monitoring point according to the height of the monitoring base point, measured by the measurement robot, and the height difference between the monitoring base point subjected to atmosphere refraction revising and the monitoring point. The elevation data is processed by utilizing the method provided by the invention, the precision of the elevation data can be relatively greatly improved and the reliability of a monitoring result is improved, so that a foundation is laid for real-time early warning of landslip of the open mine pit slope.

The invention discloses an evaluation method of a slope monitoring and early warning system based on the Big Dipper, and relates to the technical field of engineering monitoring. The evaluation method includes the steps that 1, monitoring data including displacement in a continuous time period, of a slope and the like is obtained through a Big Dipper measuring module and preprocessed, so that the monitoring data meets the requirement of system construction; 2, a data management module is used for graphical display, parameter setting, text output and data updating, storage and modification; 3, according to the Big Dipper displacement monitoring data obtained through continuous measurement, a gray differential prediction model is set up; 4, slope stability evaluation and early warning are conducted. The slope monitoring can be evaluated and predicted, a basis and reference are provided for judging the future trend of the slope, limitation of a traditional prediction model is overcome to a certain degree, which is beneficial for reducing randomness of a time sequence and improving prediction accuracy, the gray prediction model needs few samples in monitoring and prediction, and the requirement for the samples is not strict.

A slope monitoring system is disclosed. The system includes: a data collection device receiving measurement data from measurement sensors connected to measurement devices arranged in a column direction at an inclined surface, transmitting the measurement data to a management server located at a remote site over a communication network, and generating a camera control signal over a wired/wireless communication network when the measurement data received from the measurement sensors deviates from reference data of a sensor; and an image acquisition device capturing an image of an area upon receiving the camera control signal from the management server, transmitting the captured image to the management server over the Internet, capturing an image of a specific area including a corresponding sensor when receiving a camera drive signal of the data collection device over the wired/wireless communication network, and transmitting the captured image of the area to the management server.