303 results about "Rockfall" patented technology

The invention relates to the technical field of intelligent traffic and road safety monitoring, and discloses a 4D imaging millimeter wave radar-based slope deformation monitoring and identification method, which comprises the following steps of: acquiring a continuous point cloud; carrying out voxel modeling on the point cloud in a three-dimensional space; selecting three continuous frames of point clouds, and identifying mutant voxels by calculating the point number variation of each voxel in adjacent frames; performing spatial clustering on the mutant voxels to obtain an obstacle region; performing feature extraction on the obstacle area, wherein the extracted features comprise the height difference, the average reflection intensity and the centroid drift of the obstacle area; carrying out linear weighted fusion on the extracted features, and constructing a landslide mutation index; and judging whether an obstacle target exists in an obstacle area or not according to a preset condition, and performing risk grading identification according to the landslide sudden change index. According to the invention, all-weather, structured and high-reliability perception of major traffic potential safety hazards such as landslide / rockfall is realized, and a new basic capability is provided for a traffic safety system.

The invention discloses a reinforcing device before dangerous rock removal and treatment, which comprises at least two pairs of fixed anchor rods, the two pairs of fixed anchor rods are arranged in a matrix, the two pairs of fixed anchor rods are embedded in dangerous rock, the two pairs of fixed anchor rods are externally connected with a protective net, and the reinforcing device further comprises a pair of traction anchor rods arranged between the two pairs of fixed anchor rods. The invention relates to the technical field of dangerous rock reinforcement, the drilling, cooling and grouting functions are integrated through the hollow anchor rod, and the rock mass damage risk is reduced through single-point construction; the flexible connection system can effectively resolve the rock mass displacement stress; a gapless interception system is formed by the double-layer structure of the protective net and the blocking net, and falling stone impact energy is dissipated by the hydraulic buffer device in a grading manner; according to the design of the split type positioning hanging rings and the quick-release pins, modularized quick replacement of the protective net is achieved, the construction complexity is reduced through the standardized anchor rod assembly, the requirement for the number of anchoring points is reduced through cooperative bearing of the traction anchor rods and the fixed anchor rods, and the dangerous rock reinforcing safety and the construction efficiency are remarkably improved.

The invention discloses a mountain state real-time monitoring and identification method and system based on deep learning. The method comprises the following steps: performing multi-angle dynamic image acquisition through a PTZ camera; training a dual-target detection network based on a YOLOv7 framework, constructing a rockfall-crack detection model, and synchronously outputting bounding box coordinates of a rockfall target and position information of a crack region; constructing a rockfall trajectory prediction model through a DeepSORT multi-target tracking algorithm, and obtaining rockfall movement trajectory data; pixel-level semantic segmentation is carried out on the crack area, a crack mask graph is generated, and a crack main direction vector is extracted; carrying out registration and difference calculation on the image to obtain a crack width variation and an extension length, identifying a newly-added crack region and marking spatial distribution of the newly-added crack region; and constructing a multistage alarm mechanism which comprises multistage alarm signals of an on-site audible and visual alarm device and a cloud platform. The mountain disaster monitoring and early warning system has the advantages that efficient and real-time monitoring and early warning of mountain disasters are achieved through rockfall detection and tracking and crack analysis and prediction.

The present application discloses a method for measuring impact force of debris flow and application, and a design method for barrier energy dissipation pile array. The method for measuring vertical impact force of debris flow measures the tangential velocity of debris flow at the impact point to measure the vertical impact force distribution of debris flow on the impact point. Further, the design method for pile array simplifies the free section of energy dissipation pile as a cantilever beam, which generates a bending resistance when impacted by debris flow, and the bending resistance continuously works to dissipate the impact kinetic energy of debris flow. According to the motion characteristics of debris flow, the impact time and distance parameters are further derived to solve the problems of measuring and designing the stability parameters of single energy dissipation pile, the energy dissipation parameters of barrier energy dissipation pile array, and the number parameters of barrier energy dissipation pile array. The present application also provides the application of each measuring and designing method. The present application provides a more scientific and perfect solution for the energy dissipation design of barrier energy dissipation pile array to resist the impact damage of rockfall and debris flow caused by landslide disaster.

The invention relates to the technical field of video image intelligent analysis, in particular to a rockfall detection and early warning method and system based on videos. According to the method, a suspected rockfall target is recognized and judged by collecting a road or side slope monitoring video and combining target detection and motion trail analysis; and after the rockfall is judged, generating early warning information containing the position, time and danger level, storing the early warning information in a database, and triggering an early warning prompt of a user side at the same time. The system is composed of a video acquisition module, a detection and judgment module, an early warning generation module, a log storage module and a front-end interaction module, and all the modules achieve cooperation through data interfaces. Compared with the prior art, the method can still keep high detection accuracy and real-time performance in a complex environment, has the advantages of high automation degree and high expandability, can be widely applied to scenes such as highways, railways and mining areas, and remarkably improves the traffic and engineering safety level.

The invention discloses a design method of a slope flexible protection system in an extra-high and steep environment. The number of flexible protection nets is determined based on terrain parameters of a high and steep slope and parameters of the flexible protection nets; the arrangement position of each flexible protective net is determined according to the movement track of the rolling rocks and the falling rocks; determining the height of the flexible protective net based on the arrangement position of the flexible protective net; the length of each flexible protective net is determined according to the envelope line of the projection range of the rolling and falling rock bouncing trajectory; and based on the number of the flexible protection nets and the arrangement position, height and length of each flexible protection net, the ultra-high steep environment slope flexible protection system is designed. According to the method, the number of tracks is determined by dynamically matching the kinetic energy of rolling stones and falling stones and the energy level of the protective net, the protective net is arranged by combining the vertex of the bouncing track, the length of the protective net is determined based on the track projection range, the problems that a traditional method depends on experience, a protective blind area exists and resources are wasted are solved, and the method has the advantages of scientific quantification and accurate protection.

The invention provides a rockfall slope geology early warning device and method based on digital twinning, and relates to the technical field of slope geology early warning. According to the invention, slope multi-dimensional physical parameters are obtained through the perception acquisition module, standardized processing and multi-protocol transmission are completed nearby through the edge transmission module, and the cloud load is reduced. The digital twinborn module constructs a mechanical twinborn model, dynamically updates and forms a digital twinborn body in combination with standard data, and accurately copies the slope state; and the early warning decision module realizes graded early warning through a risk assessment system. A full-link closed loop of sensing, transmission, modeling and early warning is integrally formed, the problems that traditional early warning data are fragmented, manual dependence is high, and static modeling is disjointed with reality are solved, conversion from passive response to active pre-judgment is achieved, on-site rapid response and global accurate analysis are balanced, and the accuracy, real-time performance and actual combat performance of early warning of the rockfall slope are improved.

The invention provides a collapsed rockfall accurate identification and monitoring method and device based on AI and machine vision, and relates to the technical field of geological disaster monitoring, and the method comprises the steps: collecting the multi-modal visual data and environmental parameters of a collapse hidden danger region through a cooperative collection system; performing recognition, contour extraction and spatial parameter calculation on the multi-modal visual data through the recognition and positioning model to obtain a contour sequence, a volume sequence, a spatial coordinate sequence and a spatial attitude sequence of the collapsed rockfall; on the basis of the space coordinate sequence, the space attitude sequence and the multi-modal visual data, predicting the movement track and the speed sequence of the collapsed rockfall through a mixed time sequence AI model; inputting the environment parameters, the contour sequence, the volume sequence, the motion trail and the speed sequence into a kinetic energy calculation model, and calculating to obtain the impact energy of the collapsed rockfall; according to the contour sequence, the volume sequence, the motion trail, the speed sequence and the impact energy of the collapsed rockfall, the collapsed rockfall risk level is obtained through calculation.

The invention discloses an operation high-speed rail tunnel exit tall slope collapse rockfall construction method and system, relates to the technical field of rockfall protection, and is applied to an operation mountain with a structure denudation type high and steep high mountain and hill landform at an operation high-speed rail tunnel exit. The distribution and characteristics of the dangerous rock mass can be accurately presented; the model is subjected to region division to obtain a plurality of dangerous rock risk regions, so that detailed distinguishing of different risk regions can be realized; carrying out slope stability evaluation on each dangerous rock risk area and determining a risk level, so as to clearly quantify a risk condition; corresponding slope protection components are matched according to the risk levels, so that selection of the protection components is more targeted; and finally, scaffold platforms of all dangerous rock risk areas are built, operation is carried out through protection components, effective implementation of protection work is guaranteed, then pertinence and reliability of slope protection can be improved, and safety risks and resource waste caused by improper protection are avoided.

The present invention relates to the technical field of slope rockfall protection, and provides a rockfall pre-sensing active avoiding type steel column supporting system which comprises a rotatable column foot, a deflection steel column, a pulley node, a pre-sensing upper pulling anchor rope and a connecting piece. A bottom lug plate of the deflection steel column is provided with a hole, the fit tolerance of a diameter of the hole and a diameter of a pin shaft is large, so as to help the steel column to rotate in a horizontal direction. The pulley node is provided with double pulleys, a pre-sensing pull-up anchor rope is wound on each of the two pulleys, two anchor points of each rope are distributed on two sides of a projection line (hereinafter referred to as the projection line) of an initial axis of the steel column on a slope surface, one anchor point is near the projection line, and the other anchor point is far away from the projection line. Before falling rocks impact the steel column, the pull-up anchor rope on one side near the projection line is firstly impacted, and the steel column deflects towards the other side under the action of a resultant force of the pull-up anchor rope, so that falling rock impact can be avoided or impact damage of the steel column can be reduced. The protection problem that falling rocks directly impact the steel columns is solved, and the impact resistance reliability and disaster prevention toughness of the passive nets are greatly improved.

The invention discloses an accurate control blasting construction method for a high and steep slope of a surface mine, and relates to the field of blasting operation. The accurate control blasting construction method for the high and steep slope of the surface mine is outstanding in safety benefit, and the long-term stability of the slope is greatly improved by forming the high-quality flat slope, so that the risks of landslide and rockfall are fundamentally reduced, and the safety of personnel and equipment below is guaranteed; the economic benefit is remarkable, overexcavation and underexcavation of the side slope are reduced, the stripping amount is close to a design value, the cost is saved, a steeper slope angle can be adopted for stabilizing the side slope, the total rock stripping amount is reduced, recoverable resources are increased, and the service life of a mine is prolonged; the technical benefit is obvious, the half-hole rate is improved, the surrounding rock damage and blasting vibration are reduced, and a better foundation is provided for slope supporting operation such as follow-up anchor rod and anchor cable installation; environmental and operation benefits are improved, environmental damage caused by slope instability is reduced, drainage system arrangement and daily safety inspection are better facilitated through slope leveling, and long-term maintenance cost is reduced.

The invention relates to the technical field of computer vision, in particular to a motion perception rockfall intelligent monitoring method and device based on deep learning. The method comprises the following steps: receiving a monitoring video from a monitoring area; constructing a rockfall detection and tracking framework based on a YOLOv8 target detection network and a ByteTrack target tracking algorithm; preprocessing the monitoring image, inputting the monitoring image into a YOLOv8 detection network to carry out moving target feature extraction, and outputting a rockfall detection result; and track matching is carried out by using a ByteTrack algorithm in combination with Euclidean distance and motion direction constraint, and a rockfall motion track is generated. According to the method, a traditional image algorithm and a deep learning algorithm are combined, moving target detection and multi-target tracking are constructed, and rockfall in a complex rock background is accurately captured from multiple dimensions; according to the method, the space coordinate position of the rockfall target can be accurately obtained, a complete movement track can be generated for each rockfall target, statistical information of rockfall events is effectively obtained, and a reliable basis is provided for disaster grade evaluation and early warning.

The invention discloses a landslide disaster site safety risk assessment decision-making method and system, and belongs to the technical field of geological disaster risk assessment and emergency rescue. According to the invention, through multi-source monitoring data fusion processing, potential rockfall risk release points on a landslide site are identified, and attributes and release probabilities of the potential rockfall risk release points are quantified; a data-driven rockfall simulation model parameter intelligent optimization system is constructed, and self-adaptive adjustment of simulation parameters is achieved; and a scene-driven five-factor risk assessment system is provided, risk assessment of the operation area is completed by integrating disaster risk and disaster-bearing body sensitivity, and finally a visual risk distribution map is generated and dynamic updating is realized. According to the method, the defects of static performance, parameter solidification and single index of a traditional assessment method are overcome, dynamic and high-precision assessment of the landslide disaster risk is realized, the accuracy and the real-time performance of risk assessment are remarkably improved, and scientific and reliable decision support is provided for landslide emergency rescue operation.

This utility model discloses a surveying drone with a rockfall protection structure, relating to the field of drone technology. It includes a main cabin for housing the drone's electronic components; a measurement host located at the top center of the main cabin for performing measurement functions and data acquisition; a protective frame located on the top outer side of the main cabin for protecting the measurement host; several extension arms located around the main cabin for welding to form the drone's frame; a propeller for providing flight propulsion; a rockfall protection assembly located on the outer side of one end of each extension arm for preventing damage to the propeller from falling rocks; a landing support located in the middle of each extension arm for supporting the drone's landing; and a control mechanism located inside the main cabin for controlling the drone's flight and signal transmission. This utility model effectively solves the problem of surveying drones being easily damaged by falling rocks when operating in areas prone to geological disasters.

The utility model relates to the field of geotechnical engineering, in particular to an assembly type rockfall emergency blocking structure which comprises a plurality of prefabricated blocking nets, a plurality of prefabricated micro piles and a plurality of prefabricated blocking columns. The prefabricated micro piles are embedded and inserted into a foundation pit which is deeply excavated in advance; the prefabricated micro pile comprises a first connecting section, and the first connecting section is located on the upper portion of the prefabricated micro pile. The prefabricated blocking column comprises a second connecting section, and the second connecting section is located on the lower portion of the prefabricated blocking column. The first connecting section is connected with the second connecting section, and the first connecting section and the second connecting section are detachable; the prefabricated blocking nets are connected between every two adjacent prefabricated blocking columns, and the prefabricated blocking nets and the prefabricated blocking columns are detachable. The dangerous rock emergency danger reduction barrier is convenient to disassemble and assemble and can be recycled.

This application belongs to the field of plastic pipe performance testing technology, specifically relating to a plastic pipe strength testing device and method. The testing device includes a support base, a clamping mechanism, a guide tube, a velocity sensor, and a deformation detector. The support base has a support platform; the clamping mechanism is connected to the top surface of the support platform for positioning the plastic pipe; the guide tube is connected to the support base, vertically positioned above the plastic pipe held by the clamping mechanism, allowing falling rocks to impact the plastic pipe; the velocity sensor is connected to the support base and located at the exit of the guide tube to obtain the instantaneous velocity of the falling rock impacting the plastic pipe; the deformation detector is connected to the support base and located at the exit of the guide tube to detect the deformation of the plastic pipe when impacted by a falling rock. This application avoids the problem of large differences in test data from different testers in different testing scenarios, improving the accuracy of assessing the rock impact strength of plastic pipes.

The utility model discloses a passive blocking and protecting structure for ditch source collapse rolling stones, which comprises a multi-stage blocking structure arranged in a ditch and a buffer percolation structure arranged on the inner side of the blocking structure, the blocking structure further comprises a sheet-pile wall and a gravity type check dam, the sheet-pile wall is arranged at the lower part or the tail end of the ditch source collapse of the ditch, and the gravity type check dam is arranged on the lower part or the tail end of the ditch source collapse of the ditch. A multi-stage gravity type check dam is distributed in the channel on the front side of the sheet-pile wall; the blocking structure can be completely arranged to be a sheet-pile wall or a gravity type check dam. The blocking structure can be alternately provided with sheet-pile walls and gravity type check dam dams according to terrains; the buffering percolation structure further comprises a buffering layer, a rockfall groove and a percolation structure. Through the design of the blocking structure, the buffer layer and the percolation structure, the purposes of blocking rolling stones, draining ditch water and effectively preventing the ditch source from collapsing the rolling stones can be achieved.

This invention relates to the field of coal mining technology, and more particularly to a personal protective device (PPE) for underground operations, comprising a drive base, a support frame, a lifting platform, a first protective component, and a second protective component. When in the protective state, the first and second protective components are in contact; when in the working state, they are separated. The advantages are that the cooperation between the drive base and the support frame allows the support frame to move along the length of the drive base; the lifting platform can lift workers to the working position on the tunnel roof, avoiding physical fatigue caused by prolonged overhead work. The first and second protective components can switch between the protective and working states: in the protective state, they are in contact to form a top protective structure, effectively shielding against falling rocks or broken rock fragments from the tunnel roof; in the working state, they are separated to create operating space, facilitating normal roof work for workers.

The application discloses a kind of stone collecting devices, belong to pipeline conveying technical field, to solve the problem that existing passive stone collecting device is easy to block, the stone collecting device includes main slurry discharge pipeline (1), first rockfall pipeline (2) and first stone storage tank (3), main slurry discharge pipeline (1) contains main slurry inlet section (11) and main slurry discharge section (12), the upper end of first rockfall pipeline (2) is connected with main slurry discharge pipeline (1), the upper end of first rockfall pipeline (2) is located between the inlet (121) of main slurry discharge section and the outlet (112) of main slurry inlet section, the lower end of first rockfall pipeline (2) is connected with the inlet of first stone storage tank (3), and the first filter grid (4) is arranged at the inlet (121) of main slurry discharge section. First rockfall pipeline and first stone storage tank are arranged before first filter grid, and large-diameter slag stone can be filtered out and enter first stone storage tank through first rockfall pipeline, which not only can avoid blockage, but also can improve screening efficiency.

The invention discloses a fracture-vug stratum well wall rock mechanical parameter prediction method based on well drilling chipping rock hardness in the fields of geomechanics, oil and gas well engineering and petroleum and natural gas exploitation. The method comprises the following steps: (1) well drilling chipping rock pretreatment and hardness testing; (2) constructing a quantitative relationship between rock skeleton mechanical parameters and hardness based on a homogeneous isotropic numerical model; (3) extracting stratum fracture-cavity structure characteristic parameters, and constructing fracture-cavity development rock numerical models of different sizes; (4) performing numerical simulation to calculate rock mechanical parameters of the fracture-vug development rock numerical models of different sizes; (5) well wall rock mechanical parameters of the fracture-cavity stratum are obtained through calculation; the invention provides a brand new theory and method for predicting and evaluating the mechanical parameters of the well wall rock of the complex structure stratum, and has important significance on safe drilling, efficient fracturing and the like of unconventional oil and gas resources such as deep and ultra-deep oil and gas, especially deep shale oil and gas of fracture-cavity development, deep complex carbonate rock oil and gas and the like.

The present application relates to the high intensity area highway open cut tunnel stress analysis method under the coupling load of earthquake and rockfall, belongs to data processing analysis technical field, including the following steps: introducing disaster phase coupling factor to quantify the superposition relationship of seismic energy and rockfall load pulse; the time-space evolution process of the whole displacement field of open cut tunnel surface and the internal steel strain of open cut tunnel is calculated by using the earthquake rockfall time sequence coupling method, the multi-scale perception of open cut tunnel structure response is obtained; the dynamic coupling analysis algorithm is introduced to solve the structure inertia response caused by earthquake and the local dynamic response caused by rockfall load pulse, the multi-scale dynamic characteristics of high-frequency impact and low-frequency vibration are handled by hybrid integration strategy; the phase difference of earthquake and rockfall is calculated, the time-gravity distribution law of internal structure of open cut tunnel is obtained, and then the weak area of open cut tunnel under the coupling effect of multiple disasters is determined; the beneficial effects of the present application are: the low-frequency structure inertia response caused by earthquake and the high-frequency dynamic response caused by rockfall impact are obtained.

The utility model relates to a building construction platform based on building construction, which belongs to the technical field of building construction and comprises a base, and the top of the base is fixedly connected with a hydraulic rod. According to the building construction platform based on building construction, when a worker at the top of the supporting platform needs to be protected during construction, two protective ball covers are inserted into two fixing bases through connecting columns, and two movable blocks are attached to mounting grooves under extrusion; then the two extrusion screws are rotated to enable the protective ball covers on the tops of the two connecting columns to be in a supporting state, then the double-shaft motor is started to drive the two sliding blocks to move relatively, the two protective ball covers are in butt joint together, and a hemisphere is formed to protect the falling rocks; and when the falling stone hits the outer surface of the outer protection plate, the spring shock absorber and the limiting clamping rod can buffer the generated impact force, and when the protection ball cover is connected with the buffer rod, the danger generated by the falling stone is further reduced, and the personal safety of workers is guaranteed.

The invention discloses a bionic structure supporting device for geological disaster emergency and an arrangement method, and relates to the technical field of rockfall prevention supporting, the bionic structure supporting device comprises a bionic mechanism, the bionic mechanism comprises a plurality of longitudinal wires, and a plurality of transverse wires are fixedly connected among the longitudinal wires; the foundation pit high-pressure pile manufacturing mechanism is mounted on the bionic mechanism and comprises a plurality of pit wall extrusion plates; a spider web steel wire structure is simulated through the bionic mechanism, the flexible net body absorbs kinetic energy through elastic deformation buffering during falling stone impact, flexible interception is achieved, and the defect that a rigid structure is prone to being damaged is overcome; by means of the overall cooperation characteristic of local stress, impact force is dispersed to the whole net body and an anchoring system, stress concentration is reduced, and impact resistance and protection stability are improved. The high-pressure pile manufacturing mechanism is installed before concrete injection, and pressure is applied to the foundation pit wall to increase friction force; after concrete is injected, the bonding strength is enhanced, foundation pile displacement caused by soil loosening is prevented, and the stability of falling stone bearing capacity is ensured.

A landslide protection structure in a geological disaster area belongs to the technical field of slope or slope stability improvement, and comprises stand columns arranged in an arrayed manner, one side, facing the slope, of each stand column is paved with a steel mesh, and the stand columns are locked on the slope through anchor rods. Baffles are arranged on the sides, facing the slope, of the adjacent stand columns, and the height of the baffles is larger than the distance between the bottom edge of the steel mesh and the ground; a plurality of guide pipes perpendicular to the steel mesh are arranged between the adjacent stand columns, the front ends of the guide pipes protrude out of the steel mesh, the distance between the front ends of the guide pipes and the steel mesh is larger than that between the baffles and the steel mesh, steel ropes penetrate through the guide pipes, and the front ends of the steel ropes are connected with the baffles. An elastic piece is arranged at the rear end of the steel rope and located on the outer side of the rear end of the guide pipe, and when the bottom edge of the baffle abuts against the ground, the elastic piece is in a pre-compressed state. According to the scheme, accumulated fallen rocks can be conveniently cleaned, and meanwhile, the steel mesh can be buffered and protected by means of a fallen rock discharging structure.

The utility model discloses an underground operation safety escape device, including escape protection platform and the sealing door of rotation connection in escape protection platform, be provided with escape space in escape protection platform, and the sealing door is used for closing escape protection platform, be provided with a plurality of protection unit and support unit on escape protection platform, and support unit is installed in the top end surface of escape protection platform, and protection unit is installed on support unit, when the falling rock appears in the well, and the falling rock directly falls on the protection frame and the rotating plate, avoids the falling rock and directly pound on escape protection platform, and the top of escape protection platform is protected, and under the direction of protection frame and rotating plate, avoids the accumulation of falling rock on protection unit, when the relatively big falling rock is stuck on the protection frame, the rotating plate rotates, and the relatively big falling rock is conveniently rolled down from the protection frame, avoids the accumulation of falling rock, leads to the weight of being relatively heavy, and the protection frame is pressed and broken.

The utility model provides a protection device for mine goaf filling equipment. The protection device comprises a buffering structure, a sliding rod structure, two arch-shaped supporting structures, two adjustable bases and four lifting supporting devices. The two arched supporting structures are arranged in a bilateral symmetry mode, the two adjustable bases are arranged at the bottoms of the two arched supporting structures in a front-back symmetry mode, each adjustable base is connected with the two arched supporting structures, and the two lifting supporting devices are symmetrically arranged below each adjustable base. The protective device for the filling equipment in the mine goaf solves the problems that due to the fact that a pipeline of the filling equipment in the related technology is not provided with an external protective structure, the pipeline is prone to being broken and abraded due to goaf collapse, falling stone impact or rock stratum dislocation.

The application discloses a kind of mountainous area highway slope rockfall protection equipment, including supporting mechanism;The supporting mechanism includes protection plate, and further include at least one first linear degree of freedom;At least four The protection plate is hinged between each other and is folded mutually;The technology of the application can flexibly unfold and adjust the position, angle and form of protection plate according to actual situation by the design of supporting mechanism, abutting mechanism and carrying mechanism.This makes the protection device can adapt to different shapes of slope and various rockfall angle, improves the overall adaptability.M type of unfolding mode makes impact force more evenly distributed on each folding layer, thereby reducing the risk of damage caused by excessive local stress.This helps to prolong the service life of protection plate, reduces maintenance cost.M type of unfolding mode makes the side with acute angle face the side of mountainous area slope rockfall, this design can better intercept and block rockfall.

The invention discloses a slope rockfall movement track prediction method and system based on a radar and a camera. The method comprises the following steps: S1, acquiring gradient and slope direction information of any point on a slope surface; s2, acquiring a slope image of the slope, identifying slope features, and automatically endowing each grid with an initial slope coefficient according to a preset slope feature and slope coefficient comparison table; s3, on the basis of the slope surface coefficient and a rockfall kinematic model, predicting a movement track and a falling point of the rockfall; s4, comparing the real-time position information of the rockfall with the corresponding position information in the predicted motion trail; if the position difference value is within a preset threshold range, entering S5; if the position difference value exceeds a preset threshold range, judging that the slope environment is remarkably changed, and returning to S2; and S5, constructing an objective function by taking the slope surface coefficient as a variable, performing iterative optimization search, searching an optimal slope surface coefficient combination, and executing the step S3 again. The method has the advantages of high prediction precision and the like.

The application discloses a rockfall multi-target radar monitoring and early warning method suitable for complex terrains and relates to the technical field of data processing, and comprises the following steps: obtaining echo signals through a radar, obtaining moving targets according to the echo signals, obtaining basic data according to the moving targets, obtaining a theoretical path according to the basic data, obtaining monitoring data according to a weather forecast of a meteorological bureau, establishing a corresponding relationship according to the monitoring data and the theoretical path according to the duration, judging whether to issue a warning according to the corresponding relationship, obtaining a final evaluation, and updating the corresponding relationship according to the final evaluation. The application realizes quantitative evaluation of the destructive power of rockfall by adopting fixed clutter filtering technology based on Doppler frequency difference analysis, discarding zero-frequency channel signals by combining fast Fourier transform, combining a prediction-matching mechanism, stably tracking multiple rockfalls, calculating kinetic energy by combining velocity vector calculation and radar echo inversion of rockfall mass, and realizing quantitative evaluation of the destructive power of rockfall.