85 results about "Cliff" patented technology

The invention discloses an island shoreline identification method and system based on artificial intelligence, and relates to the technical field of shoreline change monitoring. According to the invention, through fusion modeling of the optical image, the SAR image and the topographic data, the limitation of a single data source is broken through; a vegetation coverage area and a non-vegetation shoreline can be accurately distinguished through the multispectral characteristics of the optical image, and the problem of monitoring blind areas in scenes such as cloud and mist and nighttime is solved through the all-weather penetrating power of the SAR image; a random forest classifier can effectively distinguish bedrock steep cliff, sandy sand beach and the like in combination with superpixel unit feature vectors constructed by topographic data, and accurate partitioning of a target island shoreline is completed; moreover, a dynamic global correction mechanism further eliminates space-time error accumulation, a standard deviation mean value is calculated through cross-season historical data, accidental errors such as typhoon and rainstorm are filtered, a future global correction coefficient is predicted in combination with a time sequence model, and the reliability of long-term monitoring is remarkably improved.

A rock mass informatization model establishment method based on laser point cloud relates to the field of model identification and analysis, and is characterized by comprising the following steps: unmanned aerial vehicle laser data acquisition; establishing an inclination model; re-matching the laser point cloud flight strip; carrying out refined point cloud classification; establishing a triangulation network model; establishing a rock form model; establishing a rock mass information model; establishing a rock mass analysis system; and collapse simulation. The method provided by the embodiment of the invention has the advantages that the unmanned aerial vehicle can be used for carrying the laser radar to carry out close-to-land imitation flight, structures such as collapse, cracks and rockfall of the mountain under the dense forest can be directly measured by using the good vegetation penetrating ability of the laser point cloud, and compared with the original modes such as field investigation and photogrammetry, the method has the advantages that the measurement accuracy is greatly improved. The information obtained by the laser point cloud is more accurate and comprehensive, and the geometric dimension, the steep cliff section shape, the structural surface feature, the lithology, the boundary condition and other features of the dangerous rock mass can be directly confirmed.

The invention belongs to the technical field of geological prospecting, and particularly discloses an exploration method for constructing an altered rock type gold mine in a shallow coverage area, which comprises the following steps of: firstly, optimizing a working area by using regional geochemical prospecting abnormity, and gradually reducing a prospecting target area by using 1: 25,000 geochemical measurement, 1: 10,000 soil profile measurement and 1: 10,000 geological grass survey; identifying a linear negative topographic development section by using an unmanned aerial vehicle, quickly positioning a gold-bearing structure alteration zone by using a manner of stripping soil and adopting a detection sample, and performing ground surface control by using a groove exploration project; and a target position is predicted by combining the ore body grade, the ore body thickness and the product contour map of the ore body grade thickness by utilizing a structure superposition halo method, drilling engineering deep verification is carried out, and finally the topography and the landform are recovered to find out the shape, the occurrence, the scale and the resource potential condition of the gold mineralized body. The method is simple and convenient, small in environmental disturbance, low in cost investment and good in coverage area effect, the purpose of rapid prospecting is achieved, and an excellent gold ore prospecting effect is achieved in the Heidong region of the Qieemun Tagean, the cliff and the Qieemun Tagean.

The invention discloses a method for extracting a steep slope, a steep cliff and a scarp based on an elevation angle extreme value, which comprises the following steps of: 1, acquiring a digital elevation model (DEM) of a research area, and constructing a multi-direction translation model of the DEM based on matrix convolution operation; 2, calculating a three-dimensional maximum elevation angle (3D maxEA) and a three-dimensional minimum elevation angle (3D minEA) of DEM data through a translation model; 3, determining the critical terrain gradient ST of the abrupt slope, the abrupt cliff and the scarp, comparing the relative sizes of the 3D maxEA, the-3D minEA and the ST, and extracting the raster data of the abrupt slope, the abrupt cliff and the scarp; and 4, extracting vector lines of the 3D maxEA and the-3D minEA which are equal, superposing area vectors of the abrupt slope, the abrupt cliff and the scarp, and extracting vector line data of the abrupt slope, the abrupt cliff and the scarp through a cutting method. According to the abrupt slope, abrupt cliff and scarp extraction model provided by the invention, the landform abrupt change is prevented from being smoothed, and the abrupt slope, the abrupt cliff and the scarp which are easily hidden by slope smoothing are excavated.

The invention discloses a steep cliff three-dimensional modeling method and system based on structural plane constraint, and relates to the technical field of three-dimensional geographic information system.The steep cliff three-dimensional modeling method comprises the steps that steep cliff area geological data including steep cliff multi-view images and steep cliff surface dense point cloud data are collected, and a geological prior knowledge base is constructed; an image recognition technology is used for processing a steep cliff multi-view image, point cloud geometric analysis is combined, and the structural plane spatial orientation including a rock stratum interface and a joint plane is recognized. According to the method, geological priori knowledge is fused, the geometric distortion problem of a traditional digital elevation model in a cliff area is effectively solved, the spatial orientation of a rock stratum interface and a joint surface is extracted by using an image recognition technology, and the spatial orientation is used as a hard constraint condition to construct a control triangulation network framework; the problems of forced smoothing errors of a regular grid DEM and a suspended surface of a triangular irregular network are avoided, and the rock stratum structure, the crack distribution and the dangerous rock body form of the cliff can be precisely restored through the self-adaptive triangulation algorithm.

The invention discloses a cliff detection method and device, a bulldozer and a readable storage medium, and is applied to the bulldozer, and a scanning unit is arranged on a front hood of the bulldozer. The method comprises the steps that point cloud data collected by a scanning unit are acquired, a grid map is constructed according to a preset detection range and the point cloud data, and the grid map comprises at least one grid area; respectively determining candidate cliff points of each grid region; obtaining the current position of the bulldozer, and determining a target cliff point according to the current position and the candidate cliff point; and determining a cliff-breaking detection distance according to the target cliff-breaking point, and displaying the cliff-breaking detection distance on a center console of the bulldozer. According to the method provided by the invention, the problems of poor precision and high time delay when the millimeter wave radar is used for carrying out cliff detection are solved, the scanning unit is used for rapidly and accurately scanning the front ground, and when the bulldozer works in real time, the cliff detection distance of the front area is accurately and timely provided for a driver.

Systems and methods for detecting, mapping, and route planning around cliffs for robotic devices are disclosed herein. According to at least one non-limiting exemplary embodiment, a robot processing a three-dimensional range sensor scan may utilize pre-computed neighboring points to detect cliffs, navigable ramps, and holes in a plane of a map used by the robotic device to navigate.

The application discloses a cliff three-dimensional modeling method and system based on structure surface constraint, relates to the technical field of three-dimensional geographic information systems, collects cliff regional geological data including cliff multi-view images and cliff surface dense point cloud data, and constructs a geological prior knowledge base; image recognition technology is used to process the cliff multi-view images, combined with point cloud geometry analysis, to identify the spatial orientation of structure surfaces including rock layer interfaces and joint surfaces. The application effectively solves the geometric distortion problem of traditional digital elevation models in cliff regions by fusing geological prior knowledge, uses image recognition technology to extract the spatial orientation of rock layer interfaces and joint surfaces, and uses the spatial orientation as a hard constraint condition to construct a control triangular net framework, thereby avoiding the forced smoothing error of a regular grid DEM and the overhanging surface problem of an irregular triangular net, and through an adaptive triangular division algorithm, the rock layer structure, crack distribution and dangerous rock body shape of the cliff can be accurately restored.

A map having surfaces that are depicted at different levels that are not related to topography, with boundaries between the surfaces, where the boundaries are disposed at travel ways. The travel ways form cliff faces in the map between the surfaces, with information items disposed on the cliff faces at positions corresponding to items of interest at locations along the travel ways where the information items are disposed.

The present invention discloses an environmentally friendly continuous arch dark-cut tunnel structure suitable for steep cliffs near rivers, and relates to the technical field of tunnel engineering. It includes a left hole composite lining, a middle semi-integral middle wall and a right hole transparent dark-cut composite lining; the left hole composite lining includes a left hole secondary lining and a left hole initial support from the inside to the outside; the right hole transparent dark-cut composite lining includes a right hole secondary lining, a right hole initial support, a bottom plate, a top supporting beam, a bottom longitudinal beam and an inclined column. Aiming at the vertical terrain near the river, the present invention proposes for the first time a fully dark-cut transparent continuous arch tunnel scheme, which uses the self-stability of the surrounding rock to resist bias pressure, has a small excavation area, is environmentally friendly, and conforms to the concept of green highway construction. The present invention also relates to a construction method for this environmentally friendly continuous arch dark-cut tunnel structure suitable for steep cliffs near rivers.

The invention discloses a cliff rock wall planting groove which comprises a bottom plate, the bottom plate is made of granite materials, a long edge of the top face of the bottom plate and two short edges adjacent to the long edge are fixedly connected with side plates which are mutually sealed, and at least two connecting blind holes are formed in the side face, away from the side plates, of the bottom plate. Reinforcing steel bars are fixedly inserted into the connecting blind holes respectively, a rock hole is formed in the wall surface of the cliff rock wall, at least two mounting holes in the same level are further formed below the rock hole, and the outer end parts of the reinforcing steel bars are fixedly inserted into the corresponding mounting holes, so that a containing cavity with an opening in the top is defined by the wall surface and the planting groove; soil is manually added into the containing cavity and the rock holes to plant plants, and root systems of the plants grow into the rock holes; the bottom plate and the side plates which are made of granite are arranged, the connecting blind holes are formed in the bottom plate, the reinforcing steel bars are inserted into the connecting blind holes to be fixed into the mounting holes preset in the rock wall, and stone glue is combined for bonding, so that the anti-weathering and anti-corrosion performance is good, and the service life is long.

The present application relates to the technical field of self-propelled devices, and discloses a method for preventing a self-propelled device from falling. The method comprises: determining an environmental map corresponding to an operating environment and a historical trigger record of the cliff sensor in the operating environment based on at least one task execution result of the self-propelled device in the operating environment, wherein the environmental map is marked with an unreachable region; determining a task activity forbidden region for the self-propelled device based on the unreachable region and the historical trigger record; and controlling the self-propelled device to perform a preset task outside the task activity forbidden.

This invention discloses a construction method for a suspended pier on a steep mountain slope, comprising the following steps: (1) excavating and leveling a multi-tiered construction platform from top to bottom on the upper part of the steep slope; (2) excavating the lower construction platform step by step according to the actual situation; (3) excavating pile foundations at each tier of the construction platform; (4) extending the steel casing after the pile foundation excavation is completed and pouring pile foundation concrete; (5) installing a bracket structure on the top of the extended steel casing; (6) constructing the formwork and binding the reinforcing bars for the pier; (7) pouring and curing the concrete for the pier; and (8) dismantling the bracket structure except for the clamps. This invention is designed for piers located in mountainous areas with complex topography, large ground undulations, and located on cliffs with the bottom part suspended, improving the safety and efficiency of construction of suspended piers on cliffs, reducing damage to the original topography, and achieving green construction.

The invention discloses a sea cliff safety and stability prediction method considering rainfall influence, relates to the field of marine geological disaster prediction, and analyzes the safety and stability of a sea cliff by combining a physical concept-based sea cliff model with soil mechanics and hydraulics to obtain a sea cliff early warning method. The effect of rainfall on the sea cliff is generally that a large amount of rainwater infiltrates downwards, so that the water content of soil is increased, the shear strength of the soil is reduced, the volume weight of the soil body of the sea cliff is increased, and the gliding force of the sea cliff is larger than the anti-sliding force, and therefore the sea cliff collapses and is damaged in a shear mode. And considering the influence of rainfall on the volume weight and shear strength of the soil body of the sea cliff, establishing a sea cliff safety and stability coefficient prediction model, and predicting the safety and stability coefficient of the sea cliff under the rainfall condition.

The invention relates to the technical field of bridge construction, and particularly discloses a cliff-near deep water area cantilever casting arch bridge skewback construction method which comprises the following steps: S1, building a cofferdam: outwards extending at a designed skewback construction position to build the cofferdam which is a steel-concrete structure with a front wall adopting a steel cofferdam; step S2, arranging an inner support: synchronously performing inner support construction and water pumping in the cofferdam in the built cofferdam, and just evacuating river water in the cofferdam when the inner support construction is completed; s3, arch support pouring is conducted, specifically, after the inner supports are arranged, arch support pouring is completed before the target low water level period; and S4, 1 # section arch section construction is conducted, specifically, the steel structure is dismantled in the target low water level period, and 1 # section building is completed. The technical problems that in the prior art, the size of the skewback becomes large, in the construction environment of deep water near the cliff, the construction space is forced to become small near the cliff, a cofferdam needs to be built firstly due to the deep water, the construction space is further compressed, and construction is difficult to complete through a construction scheme in the prior art are solved.

The invention discloses a multi-level dynamic toughness coast protection system and a design method, and the system sequentially comprises, from sea to land, a leading edge self-adaptive buffer zone which is arranged at a seabed scarp at the leading edge of a main seawall, is made of a discrete material, and is set to dynamically adjust the form to a stable profile under the action of hydrodynamic force; the offshore submerged siltation promotion and wave absorption barrier is arranged behind the front edge self-adaptive buffer zone in parallel, the crest elevation of the offshore submerged siltation promotion and wave absorption barrier is located near the average tide level, and the offshore submerged siltation promotion and wave absorption barrier is arranged to reduce wave energy and form a siltation promotion area between the offshore submerged siltation promotion and the main seawall; the artificial bionic wave absorbing beach reef system is formed in the siltation promotion area, has the width and the elevation simulating a natural reef and is arranged to break waves in advance so as to dissipate wave energy; the ecological composite section main body protection structure serves as ultimate protection and is provided with a gentle slope or a composite section. According to the method, the safety, the reliability and the economical efficiency of an engineering scheme are ensured.

The present invention discloses a pier tie beam structure and a construction method thereof, which relate to the field of bridge technology. The pier tie beam structure comprises: a cap beam; a first pier column and a second pier column connected below the cap beam to support the cap beam, the first pier column having a bottom located at the bottom of a cliff, and the second pier column having a bottom located at the top of the cliff; a tie beam and an anchoring unit, wherein one end of the tie beam is connected to the first pier column, and the other end of the tie beam is fixed to the side wall of the cliff via the anchoring unit. This application can solve the problem in mountainous bridges where the same pier needs to be provided with bridge piers at the top and bottom of a cliff with a large height difference, and the tie beam connection cannot be performed, and the stability and safety of the higher pier at the bottom of the cliff cannot be guaranteed.

The invention discloses a multi-source land and water terrain seamless coupling modeling method and system based on river section constraint. The method comprises the following steps: 1, preparing and preprocessing multi-source data to generate a constraint line; 2, constructing a TIN model based on topological constraints: eliminating a step effect; 3, performing two-stage seamless elevation coupling on the TIN model to prevent cliff type sudden change caused by elevation value difference, wherein the two stages are an elevation difference interpolation high-precision fusion realization stage and a curvature-based iterative smooth local sudden change elimination stage; and 4, model output: outputting the final seamless elevation coupled TIN model as a standard GIS format for hydrodynamic simulation or visualization application. According to the method, real seamless coupling is achieved, geometric discontinuity is solved through topological constraint TIN, elevation value difference is solved through two-stage fusion, and the step effect and the suspension phenomenon at the junction of water and land are fundamentally eliminated.

The utility model discloses a tunnel exit dangerous rock and accumulation body protection system, and relates to the technical field of tunnel engineering. The tunnel exit dangerous rock and accumulation body protection system comprises an upward slope, and the upward slope comprises an accumulation body section and a steep cliff section located above the accumulation body section; a pile slab wall is embedded in the bottom of the accumulation body section, a passive protective net located above a tunnel exit is arranged in the middle of the accumulation body section, a first stone blocking wall is arranged on the top of the accumulation body section, and an active flexible protective net which extends upwards and is fixed to the surface of the steep cliff section is connected to the first stone blocking wall. According to the tunnel exit dangerous rock and accumulation body protection system provided by the embodiment of the invention, the tunnel exit dangerous rock and accumulation body are protected by utilizing a multi-stage protection system, the protection capability is relatively high, and comprehensive and effective protection can be provided even in the face of complex and changeable geological conditions and rockfall scales.

Disclosed are a control method and apparatus for a cleaning device, and a program product, a medium and a cleaning device. The method comprises: acquiring current pose features of a cleaning device; on the basis of the current pose features of the cleaning device, determining a cliff determination threshold value, wherein the cliff determination threshold value is a critical height value for triggering the cleaning device to execute a cliff avoidance action; and on the basis of the cliff determination threshold value, determining whether to trigger the cleaning device to execute the cliff avoidance action.

The invention relates to the technical field of cofferdam construction, and particularly discloses a cliff deepwater area cofferdam stand column steel pipe positioning construction method which comprises the steps that a, four sensors are arranged to serve as reference sensors, and three of the reference sensors are adjusted to be located on the same horizontal plane through a Beidou system; b, the stand column is hoisted in place through a crane, the stand column makes contact with the base covering bed rock, a sensor is installed at the upper end of the stand column to serve as a positioning sensor, and the positioning sensor is adjusted to be located on the datum plane; c, a sensor is installed at the lower end of the stand column to serve as an inclination sensor, and it is ensured that the stand column is vertical through the distance among the positioning sensor, the inclination sensor and the reference sensor; and d, after all the stand columns are installed, the bottoms of the stand columns are fixed to the bed rock through concrete. The technical problem that in the prior art, in the deep water construction environment facing cliff, after the cofferdam is thinned to make room for construction work, the stand columns of an internal frame supporting structure cannot be guaranteed to be vertical is solved.

Puffins on a cliff wall hanging

An adjustable electronic fence sensor structure comprises a base, a lower adjusting support, a middle adjusting support, a lower connecting piece, an upper connecting piece and an induction rod. The strip-shaped holes in the base can adapt to pit terrains or cliff terrains; through the upper connecting piece and the lower connecting piece, a certain angle can be formed between the sensing rod and the ground, the design can be applied to more complex terrains in cooperation with the base, meanwhile, the sensing rod can rotate and be adjusted in the axial direction, signals can be better transmitted and received, and the false alarm rate is reduced. The sensor is vertically arranged, so that the sensing area is increased, and the missing report phenomenon is reduced.

Seabirds on a cliff wall hanging

The utility model provides a buckle hanging system used for steep cliff wall arch bridge hoisting, the buckle hanging system comprises a vertical pile foundation, a bearing platform, anchor cables and a buckle cable, the anchor cables and the buckle cable are arranged on the bearing platform in a penetrating mode, the buckle cable is located in the middle of the bearing platform, and the anchor cables are symmetrically distributed on the two sides of the buckle cable; the bearing platform is connected with a plurality of vertical pile foundations. The steep cliff arch bridge supporting structure has the advantages of being suitable for various steep cliff arch bridges, reasonably utilizing topographic conditions, reducing excavation of mountains, reducing construction difficulty, shortening construction period and being capable of remarkably saving cost.

A suspended platform and its installation method are disclosed for anchoring unstable rock masses on steep cliffs. The platform includes a suspended platform, a lifting work platform, and a lifting cable system. The suspended platform includes a base plate, side railings, anti-collision tracks, a telescopic support sliding device, detachable anchor legs, a shock absorption device, and a power failure sensor. The lifting cable system includes a winch, cables, and shear anchor piles. The suspended platform is suspended from the free face by the lifting cable system, which is fixed to the ground by the shear anchor piles. The lifting work platform is installed inside the suspended platform to provide a platform for vertical movement. The telescopic support sliding device is used for sliding the suspended platform on the rock wall. The detachable anchor legs are used for connecting or separating the suspended platform from the rock wall. This invention enables timely separation of the suspended platform from the rock mass, mitigates damage to the work platform when the unstable rock mass collapses, and provides a work platform for reinforcing unstable rock masses on steep cliffs with high free faces.

The invention discloses a river channel large-section measurement method based on airborne laser radar and unmanned ship depth measurement. The unmanned aerial vehicle carries a laser radar to scan landforms on both banks, and the unmanned ship equipped with a single-beam depth finder is synchronously utilized to obtain underwater landforms; the data is subjected to space-time reference unification, point cloud calculation and classification and underwater data post-processing, fusion is carried out in a point cloud data processing system, and large-section data extraction and generation are carried out. Through man-machine cooperation, a 24 km river channel large-section task is completed in 3 days, and compared with a traditional RTK + manned ship depth finder, the efficiency is improved by 5 times. The method is suitable for large-scale river channel large-section measurement work, and is especially suitable for complex environments such as cliff steep banks, shoals, torrent and the like where manpower or manned ships cannot reach, the safety of operators is improved, and centimeter-level three-dimensional data is provided for water conservancy planning, flood control and disaster relief and engineering construction.

The present invention discloses a cableway safety transportation platform for dangerous rock treatment, comprising a feeding platform and an unloading platform, wherein a main cable is provided between the feeding platform and the unloading platform, a pulley carrier is provided on the main cable, a driving device is provided on the feeding platform, the driving device and the pulley carrier are connected by a moving rope, the driving device can drive the pulley carrier to move along the main cable between the feeding platform and the unloading platform, and a lifting frame for raising the main cable is provided on the feeding platform. The transportation of materials or tools by cableway can reduce transportation costs, improve work efficiency, reduce the frequent walking of personnel on slopes and cliffs, and reduce safety risks; compared with existing cableway transportation, the present invention is provided with a feeding platform and an unloading platform installed on dangerous rocks, for personnel to stand during the transportation of materials or tools during dangerous rock treatment, providing workers with a safe platform for loading and unloading, and further improving safety.

The invention relates to the field of buckle cable ridges, in particular to a buckle cable ridge construction method used under the steep cliff wall condition. Pile foundation locking opening construction of the buckle rope ground ridge is carried out; constructing a pile foundation and a bearing platform bracket foundation under the ground of the buckle cable ridge; constructing a pile foundation and a bearing platform bracket above the ground of the buckle cable ridge; and carrying out bearing platform construction on the buckle cable ridge. According to the construction method, when no large hoisting equipment exists, a construction platform, namely a pile foundation locking opening, can be directly poured on the steep cliff slope surface only by adopting a mode that small temporary facilities are matched with manual work, after pile foundation excavation is completed, a bearing platform support foundation and the pile foundation are synchronously poured into a whole, then a bearing platform support is installed to construct a bearing platform, and construction of the buckle cable ridge is completed; the bearing platform construction load is transmitted to the bearing platform support foundation through the bearing platform support and directly transmitted to the pile foundation, the problems that excavation of a mountain is conducted, and additional treatment is needed due to insufficient foundation bearing capacity are solved, and meanwhile environmental damage is reduced; the method is simple in step, convenient to operate and good in effect.