103 results about "Rock engineering" patented technology

The present disclosure relates to the technical field of stability control of surrounding rock of tunnelling, and provides an excavation compensation method for tunnelling in deep rock engineering, including: acquiring an engineering geological information of the tunnelling in deep rock engineering; determining an engineering hazard type based on the engineering geological information; determining an excavation compensation support strategy for the surrounding rock of the tunnelling in deep rock engineering based on the engineering hazard type; and performing a supplementary support control on the surrounding rock of the tunnelling in deep rock engineering based on the excavation compensation support strategy. Through the supplementary support strategy, the difference value between a radial stress of the surrounding rock of the tunnelling in deep rock engineering and an initial crustal stress can be reduced to within a preset approximate value range, further effectively preventing a stress concentration phenomenon occurred in a tangential stress.

The invention discloses a rock mass fracture risk early warning method, system and device based on acousto-optic data fusion and a storage medium, and the method comprises the steps: collecting acoustic emission energy, acoustic emission counting, DIC data and other acousto-optic monitoring data of a rock mass test piece, and calculating to obtain an acoustic emission b value, an acoustic emission energy variance, strain field differentiation data and other multi-dimensional precursor indexes; cUSUM-Pettitt is used for cooperatively checking and recognizing mutation points, confidence and physical mutation amplitude are combined to divide multiple early warning levels, a classification model is trained through a LightGBM algorithm, and accurate early warning of the rock mass fracture risk is achieved. Multi-source physical field information is fused, the limitation of single data monitoring is overcome, the early warning reliability and timeliness are improved, and the method is suitable for disaster prevention and control in the fields of mine safety, rock mass engineering and the like.

The invention relates to a rock multi-surface direct shear test system and method considering fluid-solid coupling, and relates to the field of rock mechanics and seepage mechanics. Comprising a true triaxial loading frame which is used as a supporting frame of a test system and is used for clamping a sample and realizing a true triaxial stress state; the shear loading device is arranged in the true triaxial loading frame and is used for independently applying a horizontal shear load; the seepage module is connected with the true triaxial loading frame and is used for feeding fluid into the surface of the sample; the data acquisition system is used for monitoring and recording stress, strain, displacement, acoustic emission signals and seepage parameters in the test process in real time; and the servo control system is used for coordinating and controlling static loading, shear loading and seepage processes. According to the invention, the loading precision is improved, more real test conditions are provided for safety assessment of deep rock mass engineering and geological disaster prevention and control, and the device has important engineering application value.

The present application belongs to the field of rock burst risk assessment of deep rock engineering, and particularly relates to a quantitative evaluation method for rock burst tendency of surrounding rock under multiple disturbances, which comprises the following steps: obtaining the distribution depth of excavation damage zone through acoustic testing, and obtaining the average wave velocity of rock mass in the range of original rock zone; obtaining the geological strength index and disturbance factor through the average wave velocity; further obtaining the residual elastic energy of surrounding rock based on the geological strength index and disturbance factor, and evaluating the rock burst tendency of surrounding rock through the residual elastic energy of surrounding rock; the acoustic testing points of surrounding rock are unchanged, and the rock burst tendency of surrounding rock is evaluated after each excavation footage of the working face is completed, until the distribution characteristics of rock burst tendency no longer change obviously, which is taken as the long-term evaluation result of rock burst tendency of surrounding rock. The quantitative evaluation formula of rock burst tendency of surrounding rock considers the rock mass structure effect, which is reflected in the geological strength index, and considers the excavation disturbance effect, which is consistent with the actual situation of engineering construction process, and has strong practicability.

The invention provides a surrounding rock engineering characteristic prediction method and device for digital drilling, equipment and a medium, and the method comprises the steps: obtaining a drilling parameter of a target drilling section, and determining an auxiliary parameter based on the drilling parameter; the drilling parameters and the auxiliary parameters are input into a surrounding rock engineering characteristic prediction model, and a surrounding rock engineering characteristic result output by the surrounding rock engineering characteristic prediction model is obtained; the surrounding rock engineering prediction model comprises a plurality of prediction sub-models, and the prediction sub-models are obtained through machine learning training by taking respective parameter samples as inputs; the plurality of parameter samples includes an initial parameter sample and an enhanced parameter sample constructed based on the initial parameter sample. The method can better adapt to complex and changeable actual working conditions, so that the surrounding rock engineering characteristics are sensed more accurately and reliably, and timely decision support is provided for tunnel engineering construction.

The invention relates to an earth-rock engineering rolling construction monitoring method and device, electronic equipment and a storage medium. The method comprises the following steps: dividing a construction area into a plurality of target block-shaped areas; in the construction process of the construction area, collecting real-time state data for a currently constructed target block-shaped area; analyzing the real-time state data based on a rolling pass intelligent algorithm, and determining a target detection result; on the basis of the target detection result, a compensation rolling strategy is generated for the target block area which is not qualified in rolling; wherein the compensation rolling strategy comprises at least one of a compensation path and a compensation parameter; the compensation rolling strategy is sent to the construction equipment; wherein the compensation rolling strategy is used for controlling the construction equipment to complete rolling operation. Thus, granulation management of the construction area can be achieved, accurate coordinate positioning is provided for subsequent repair, and timeliness is guaranteed; and an optimal pressure supplementing path is planned through an algorithm, so that the road roller is prevented from repeatedly rolling a qualified area, and invalid oil consumption and equipment loss are reduced.

The invention discloses a design method of a high-performance grouting material accurately matched with a soft coal rock physical property structure, and relates to the technical field of geotechnical engineering grouting. According to the method, mineral components, permeability, fracture distribution, strength, wettability and hydrological characteristics of soft coal rock are analyzed through multi-dimensional tests such as X-ray diffraction and a scanning electron microscope, and a quantitative mapping relation between physical property parameters and grouting material performance is established; constructing a grouting reinforcement material database comprising a material sub-library, a performance sub-library and a case sub-library, and introducing a generative adversarial network to dynamically update the fracture model; an orthogonal test and a machine learning algorithm are adopted to carry out multi-objective ratio optimization, and precise matching of grouting material performance and engineering geological conditions is realized in combination with field adaptability index closed-loop verification. According to the method, the grout groutability and the surrounding rock deformation control effect can be remarkably improved, the technical problems that a traditional grouting material depends on experience, and a database is static and low in efficiency are solved, and an intelligent solution is provided for complex soft coal rock engineering reinforcement.

The invention relates to the technical field of boosting engineering, in particular to a compact booster station spatial layout method and system for a mountain wind power plant. The method comprises the following steps: acquiring topographic data of a booster station area; performing data preprocessing based on the topographic data of the booster station area, including abnormal point elimination and elevation normalization, to obtain to-be-processed station area information; according to the station area information to be processed, generating a step type platform mother shape; analyzing the slope stability based on the step type platform mother shape; determining the drainage smoothness degree according to the slope stability; determining a candidate site area according to the slope stability and the drainage smoothness degree; determining a booster station compaction scheme based on the candidate site area; establishing a cable trench route according to the booster station compaction scheme to obtain cable trench route data; calculating the earth-rock engineering quantity based on the cable trench routing data; and the foundation bearing capacity is checked based on the earthwork engineering quantity. The space utilization rate of the mountain wind power plant booster station is improved based on the boosting engineering technology.

The invention relates to the technical field of rock engineering construction, in particular to the technical field of rock stratum drilling construction, and particularly relates to a cone cylindrical drilling tool and a construction method for rock drilling circulating slag collection. The problems that a cone is seriously abraded, cost is increased and construction efficiency is low due to the fact that a conventional cone barrel-shaped drilling tool repeatedly crushes rock slag are solved, large-particle rock slag is prevented from being repeatedly crushed, the abrasion degree of the cone is reduced, the construction cost is reduced, and the construction efficiency is improved, the cone barrel comprises a barrel body with the cone arranged on the bottom edge, a precipitation bin is arranged on the upper portion of the barrel body, and a coring pipe is arranged on the lower portion of the barrel body; a slurry suction pipe for guiding slurry into the coring pipe is arranged at the top of the barrel; at least one inner rib for generating rotational flow in the coring pipe is arranged on the inner wall of the coring pipe, and at least one spiral slag discharging pipe for guiding slag slurry at the bottom into the precipitation bin is arranged in the side wall of the barrel; the lower end of the spiral slag discharge pipe is a lower slag slurry suction port and is positioned at the bottom edge of the coring pipe, and the upper end of the spiral slag discharge pipe is an upper rotational flow slag discharge port communicated with the precipitation bin.

The application discloses a kind of deformation stress increment acquisition method and system of extremely thin layered soft surrounding rock;It is related to the technical field of tunnel engineering;The strain increment matrix of extremely thin layered soft surrounding rock under overall coordinate system is obtained, and under the elastic assumption theory, the stress tensor matrix of extremely thin layered soft surrounding rock under overall coordinate system is calculated by combining rotation matrix and element stiffness matrix, and the deformation stress increment is calculated according to the stress tensor matrix after characteristic correction;The method is improved on the basis of traditional extremely thin layered surrounding rock mechanics characteristic simulation technology, and under the elastic assumption theory, the stress increment matrix of extremely thin layered soft surrounding rock under overall coordinate system is calculated based on strain increment matrix, rotation matrix and element stiffness matrix;The deformation stress increment is calculated after the characteristic correction of stress increment matrix, and the stress deformation characteristics of extremely thin layered soft surrounding rock are accurately and reasonably described, and the efficiency of extremely thin layered soft surrounding rock engineering analysis is improved.

The utility model belongs to the technical field of earth-rock engineering, and particularly discloses a reinforcing steel bar cutting device for earth-rock engineering construction, which comprises a device table, a conveyor is fixedly mounted on the device table, a rock wool cushion is arranged on one side of the conveyor, a positioning mechanism for stabilizing reinforcing steel bars is arranged on the conveyor, and the device table is fixedly mounted on the device table. A shifting frame is slidably connected to the inner side of the device table, a rotating shaft is rotatably connected to the inner surface of the shifting frame through a driving mechanism, and a blade is arranged at the end, close to the shifting frame, of the rotating shaft. According to the reinforcing steel bar cutting device for earth-rock engineering construction, the cutting protection mechanism is additionally arranged, an arc-shaped cover plate covers the periphery of the cutting portion of a reinforcing steel bar in the reinforcing steel bar cutting process, sparks and chippings generated in the cutting process are effectively shielded, and the risk that the sparks splash to damage nearby electrical equipment is greatly reduced through the design; the possibility that workers are scalded is avoided, meanwhile, the dust concentration in the air is reduced due to splashing of chippings, and the working environment is improved.

This invention relates to the fields of computational mechanics and rock engineering, and particularly to a numerical simulation method for end-anchored rock mass engineering based on DDDA (Digital Directed Amplification and Analysis). The method includes: constructing a circular element discontinuous deformation analysis numerical model according to actual engineering conditions; performing discontinuous deformation analysis numerical calculations; analyzing the calculation results of the unanchored model to preliminarily determine the anchoring scheme; performing discontinuous deformation analysis numerical calculations again; determining whether the model contains unstable blocks, adjusting the anchoring scheme, and repeating the aforementioned steps until the model stabilizes, thus completing the design of the rock mass engineering anchoring scheme. This invention establishes a numerical simulation method capable of accurately simulating the interaction between anchor bolts (anchor cables) and rock mass, and integrating anchoring scheme design, stability assessment, and dynamic parameter optimization functions. It achieves accurate prediction of the deformation and failure behavior of anchored rock mass and optimizes anchoring design, featuring high simulation accuracy and strong practicality.

The application provides a method and device for correlatively characterizing stress drop and micro cracks of granite joints under multiple working conditions, computer equipment and a readable storage medium, relates to the technical field of deep hard rock engineering mechanics and geological disaster warning, and the method comprises the following steps: constructing a Voronoi-GBM numerical model; constructing a multi-objective optimization function for optimizing multiple micro mechanical parameters; optimizing the micro mechanical parameters of the Voronoi-GBM numerical model based on the multi-objective optimization function; simulating the operation of multiple granite shear working conditions by using the optimized Voronoi-GBM numerical model; and taking the micro crack characteristic parameters as input samples and the macro stress drop characteristic parameters as output samples, and training a target correlation characterization model. The scheme can effectively mine the correlation characterization of stress drop and micro cracks of granite joints, and realize the prediction of macro stress drop behavior from the micro crack characteristics.

The invention discloses an instability failure simulation method for a soft and hard interbedding counter-tilt slope under a rainfall condition, and relates to the technical field of rock mechanics and rock engineering. The method comprises the following steps: constructing an FDEM numerical model of a target soft and hard interbed counter-dip slope; setting boundary conditions for the numerical model, and applying initial gravity until a stress balance state is reached; based on the numerical model of stress balance, rainfall simulation is executed; according to a rainfall simulation result, judging whether slope instability failure occurs or not; if the slope instability failure does not occur and the load increasing condition is met, executing gravity load increasing simulation until the slope instability failure occurs while the rainfall simulation is maintained; and according to the critical gravity load when the slope is unstable, determining the slope safety coefficient of the target soft and hard interbed counter-tilt slope under the rainfall condition. According to the invention, fine simulation of the whole deformation and instability process of the soft and hard interbedding counter-dip slope under the rainfall condition can be realized.

The invention discloses an earthwork engineering quantity calculation method and device based on a geologic model. The method comprises the steps of obtaining an initial geologic model corresponding to a project, designing an elevation surface and a partition boundary, and obtaining point cloud data obtained by project field scanning; generating a first geologic model; based on the design elevation surface and the partition boundary, performing partition processing on the first geologic model to form a partition geologic model, and determining an expected excavation geologic body of each partition; determining a current situation terrain surface based on the point cloud data, segmenting each expected excavation geologic body of each partition into an upper part and a lower part by using the current situation terrain surface, and performing grid repair on the grid corresponding to the excavated geologic body and the grids corresponding to the remaining geologic bodies when a second preset condition is met to obtain a repaired geologic model; and determining the earth-rock engineering quantity based on the repaired geologic model. According to the method, the efficiency and the accuracy of calculating the earthwork amount in civil engineering construction are improved.

The invention discloses a mechanical force application platform device for a rock and soil sample strength test in the technical field of rock engineering, which comprises a mechanical force application platform consisting of a test platform, a single-shaft force application mechanism and a test seat, and further comprises a side support mechanism, the side supporting mechanism is composed of multiple sets of adjusting parts, multiple sets of supporting parts and a fixing part, the fixing part is arranged on the outer side of the test seat, the multiple sets of adjusting parts and the test seat are fixedly arranged through the fixing part, and the supporting parts are installed on the outer sides of the adjusting parts in a sliding mode; auxiliary contact parts are arranged at the end parts of the plurality of groups of supporting parts, and each auxiliary contact part is composed of a plurality of groups of contact plates; through the design of a plurality of groups of adjusting parts, supporting parts, fixing parts and auxiliary contact parts, a rock model with an actual shape is supported by modularized side edges, so that the experiment accuracy can be effectively improved, and meanwhile, the practicability of the rock model for a rock engineering model strength test is improved.

The present invention relates to a method for constructing a rock crushing damage model under impact loading and its application, belonging to the field of rock engineering, and solving at least one of the problems of existing rock models in predicting the failure evolution law and / or strength under direct impact loading, namely, insufficient reliability and accuracy, and difficulty in revealing the change law under direct impact loading. The method comprises: S1, based on the wing crack propagation model, obtaining a tension damage model under quasi-static loading; S2, introducing a correction factor to correct the tension damage model under quasi-static loading, and obtaining an expression for the tension damage model under direct impact loading; S3, determining the dynamic fracture toughness of the rock; S4, determining the correction factor; S5, constructing a tension damage model under direct impact loading. The present invention enhances the accuracy and reliability of the model in predicting the strength and failure evolution law of rock under direct impact loading, and the obtained model can reveal the quantitative change law of the damage and destruction of rock under direct impact loading.

The utility model discloses a tamping device for earth-rock engineering, and relates to the field of earth-rock tamping. The device comprises a moving table, a fixing frame and a double-drive motor, connecting discs are arranged at the output ends of the two sides of the double-drive motor, first transmission rods are rotationally arranged at the ends, away from the double-drive motor, of the two connecting discs, and second transmission rods are rotationally connected to the bottoms of the first transmission rods. Third transmission rods are rotatably mounted at the bottoms of the second transmission rods, earth ramming blocks are fixed to the bottoms of the third transmission rods, sliding blocks are fixed to the ends, away from the vertical central axis of the fixing frame, of the earth ramming blocks, the earth ramming blocks and the fixing frame are arranged in a sliding mode, and two stable clamping plates are fixed to the tops of the two earth ramming blocks correspondingly; according to the earth ramming device, on the premise that safety is provided for constructors, the earth ramming area of a traditional earth ramming device is increased, the probability that limbs of operators are injured is effectively reduced, and meanwhile the earth ramming operation time is shortened.

A rock engineering structure support system employing mechanical fastening of adjacent mesh assemblies. A steel based support assembly that can be manufactured without field welding includes a plurality of crimped joints of different sizes and shapes for replacing welding to achieve connections between steel assemblies. Each crimped joint mechanically couples two or three steel members together, such as coupling a perimeter steel member of one steel assembly with a perimeter steel member of an adjacent steel assembly. Each crimped joint includes a body having two or more arcuate recessed surfaces each for receiving one steel member. In a first configuration of the crimped joint, a pair of spaced apart arms extend from the body and define an opening through which a steel member is passed and seated in the recessed surfaces. A deforming force is applied to the two arms to deform the body into a second configuration in which the arms abut or nearly abut at outer tips or ends.

The utility model relates to the field of earth-rock engineering, and discloses a gravel screening device for earth-rock engineering construction, which comprises a box body, a disassembly and assembly component is arranged in the box body, a feeding mechanism is arranged at the rear end of the top of the box body, the feeding mechanism comprises a feeding hopper, the feeding hopper is fixedly arranged at the rear end of the top of the box body, and a discharging hopper is arranged at the rear end of the top of the box body. A fixed plate is fixedly installed on the front portion of the feeding hopper, a contraction groove is formed in the fixed plate, a baffle is movably installed at the position, penetrating through the bottom of the fixed plate and located in the contraction groove, of the fixed plate, and a plurality of guide rail grooves are formed in the front portion of the baffle; and a first screw rod is movably mounted at the top of the baffle plate and penetrates through the top of the fixed plate. Through sliding of a first screw rod and a baffle, the feeding amount of the gravel is convenient to adjust, and the situation that screening of the gravel at the upper end is affected due to thick gravel accumulation is prevented; through a clamping seat and a second screw rod, the sieve plate can be conveniently and quickly disassembled, assembled and cleaned, and sieve plates with different pore diameters can be replaced.

The utility model discloses an earth-rock engineering transport vehicle access registration system, which relates to the technical field of engineering control, and comprises a main control device which is respectively in signal connection with an exit registration device, an entrance registration device, a network module and a barrier gate device, and the exit registration device comprises an exit identification device and an exit snapshot device. The entrance registration device comprises an entrance identification device and an entrance snapshot device. According to the utility model, the exit snapshot device and the entrance snapshot device are arranged to photograph and record the appearance, cargo loading and the like when the vehicle enters and exits the parking lot, so that the vehicle information registration is more comprehensive; through signal connection between the master control device and the exit registration device, the entrance registration device and the barrier gate device, automatic identification of vehicle information and automatic control of the barrier gate are realized. When the vehicle arrives at the entrance and exit, the exit identification device and the entrance identification device can rapidly identify vehicle information and transmit the vehicle information to the master control device to control a barrier gate switch, so that the vehicle entrance and exit management efficiency and the authenticity and objectivity of the entrance and exit information are improved.

A layered structure roadway cement mortar physical model preparation method of rock-like material belongs to the field of rock mass mechanics and rock engineering, and steps are as follows: 1. According to the engineering site situation and the predicted size, a mold is made, and a preset roadway hole is drilled on the required unit plate in advance, and then combination is carried out; 2. The roadway model is made, and after the mold combination is completed, it is inserted along the opposite preset roadway hole, and the combined mold is prepared; 3. The combined mold is placed on the telescopic support device; 4. The inner wall of the mold and the outside of the roadway model are coated with release agent, and the rock-like material is poured layer by layer, the existence of layered joints is highlighted, and the surface is scraped after vibration and compaction; 5. Demoulding and curing, and the layered structure roadway cement mortar physical model is obtained. The preset roadway hole on the mold ensures the similarity between the poured physical model and the deep metal mine layered rock roadway; the model prepared by using cement mortar reduces the difficulty and cost of obtaining the layered rock.

The present invention provides a method and system for automatically identifying linear structural surfaces in complex rock outcrops, belonging to the field of rock engineering. The method involves using a DeepLabV3+ model to semantically segment the input image of a rock outcrop, outputting a binary mask of structural surface trace pixels and performing topological reconstruction; establishing a mapping relationship between the image coordinate system and a three-dimensional point cloud; calculating the spatial angle between the direction vector of the trace and the average attitude of the structural surface group; classifying the three-dimensional point cloud data by structural surface group based on an angle threshold; and extracting three-dimensional line segments using an improved iterative Hough transform algorithm. Finally, a greedy algorithm is used to implement global multi-segment connectivity and trace length calculation for discrete line segments. This method overcomes the topographical limitations of manual measurement when obtaining rock structural surface data, improving the accuracy and efficiency of structural surface extraction in complex rock masses.

The invention relates to a rock multi-surface direct shear test system and method under true triaxial stress, and relates to the field of rock mechanics and engineering geology tests. Comprising a true triaxial loading frame, a shear loading device, a data acquisition system and a servo control system, the true triaxial loading frame is used as a supporting frame of the test system and is used for clamping a sample and realizing a true triaxial stress state; the shear loading device is arranged in the true triaxial loading frame and is used for independently applying a horizontal shear load; the data acquisition systems are respectively arranged in the true triaxial loading frame and the shear loading device and are used for monitoring and recording stress, strain, displacement and acoustic emission signals in a test process in real time; and the servo control system is connected with the true triaxial loading frame and the shear loading device and is used for coordinating and controlling the static loading process and the shear loading process. According to the invention, the loading precision is improved, more real test conditions are provided for safety assessment of deep rock mass engineering and geological disaster prevention and control, and the device has important engineering application value.

The invention relates to the technical field of reinforcing steel bar cutting, in particular to an intelligent reinforcing steel bar cutting control method in earth-rock engineering, which realizes high-precision and high-efficiency reinforcing steel bar cutting by combining an image processing technology, spatial position calculation and cutting path planning. The method comprises the following steps: firstly, acquiring an image and spatial position data of a to-be-cut reinforcing steel bar and real-time position and attitude data of a cutting machine; then, based on image data, extracting edge features of the reinforcing steel bars, establishing coordinate systems of a fixed platform, a movable platform and an operation platform, and calculating a position transformation matrix of the cutting machine; then, a cutting path is generated according to the edge features and preset cutting parameters, and the movement track of the cutting machine is calculated; and finally, a cutting control instruction is generated and sent to a cutting machine execution unit. According to the method, the cutting precision, efficiency, adaptability and safety are remarkably improved, the requirements of earth-rock engineering for high-precision and high-efficiency steel bar cutting are met, and technical support is provided for intelligent and automatic building construction.

This application relates to the field of rock engineering technology, and provides a method, apparatus, electronic device, and storage medium for determining the mechanical parameters of rocks. It includes: determining the resistivity of each sub-region on a cross-section of a target rock; if the target rock meets a preset homogeneity requirement based on the resistivity of each sub-region, then determining the mechanical parameters of the target rock based on the resistivity of each sub-region and the type of the target rock, combined with a rock mechanical parameter determination function; wherein the rock mechanical parameter determination function is based on the resistivity and corresponding mechanical parameters of different types of rock samples. This application can accurately determine the mechanical parameters of a target rock based on its type and the resistivity of each sub-region, combined with a rock mechanical parameter determination function based on the resistivity and corresponding mechanical parameters of different types of rock samples, thereby improving the accuracy of determining the mechanical parameters of rock samples.

The invention relates to the technical field of underground engineering safety, in particular to a rockburst prevention and control method for deep rock engineering, and the method comprises the steps: S1, collecting initial information; and S2, rock burst risk and position initial evaluation. And S3, excavation and energy reduction. And S4, re-evaluating the rockburst risk. And S5, releasing energy of the high-energy risk grade rockburst. And S6, energy absorption optimization design of the supporting system is carried out. Through a six-step systematic design process in the whole process, the change of rockburst prevention and control from experience judgment to quantification, process and systematization is realized; according to the method, key parameters needing to be collected and engineering measures needing to be taken in all stages are defined, and a quantitative calculation method for the rockburst grade, the energy grade and the supporting energy absorption capacity is provided.

The invention relates to the technical field of tunnel engineering intelligent perception and surrounding rock grading, and discloses a mountain tunnel surrounding rock grade automatic identification method, system and device based on image-point cloud fusion, and a storage medium. The automatic mountain tunnel surrounding rock grade identification method based on image-point cloud fusion comprises the following steps of multi-source surrounding rock perception data acquisition, surrounding rock image apparent semantic feature extraction, surrounding rock point cloud geometric state feature extraction, surrounding rock evaluation unit construction and image-point cloud feature fusion, surrounding rock engineering state comprehensive evaluation and grade identification. And surrounding rock grade zoning and result output. According to the invention, through image-point cloud fusion, a continuous evaluation unit is constructed along the axial direction of the tunnel, and the surrounding rock grade is automatically identified and output; according to the method, the objectivity and consistency of surrounding rock grade identification are improved, continuous sensing and grading of surrounding rock states are realized, the real-time performance of acquiring surrounding rock grade information is improved, deep fusion and engineering output of multi-source information are realized, and the method has good engineering applicability.

The utility model discloses a dust fall device for earth-rock engineering construction, which comprises a moving seat and a water pipe, the top of the moving seat is fixedly connected with a water tank, the top of the water tank is provided with an adjusting component, and the top of the water tank is provided with a pick-and-place component. The adjusting part comprises a first rotating shaft connected with the top of the water tank, a first shifting plate fixedly connected with the outer side of the first rotating shaft, a rotating plate fixedly connected with the outer side of the first rotating shaft, a vertical plate fixedly connected with the top of the water tank and a first spring arranged between the vertical plate and the rotating plate; by arranging the moving seat, the water conveying pipe, the water tank, the adjusting part and the taking and placing part, the problems that although an existing dust falling device can spray dust on a construction site during use, the spraying range of a spraying pipe is limited during dust falling, the dust falling effect becomes low, meanwhile, the position of the spraying pipe is fixed, and the dust falling effect is poor are solved. And the device is inconvenient to take down to be held by a worker for spraying and dust falling, so that the practicability is reduced.

The utility model relates to the technical field of sand screening devices, and discloses a sand screening device for earth-rock engineering construction, which comprises a working table, a self-cleaning sand screening mechanism is arranged at the top of the working table, a supporting mechanism is arranged at the bottom of the working table, the self-cleaning sand screening mechanism comprises a supporting seat I and a supporting seat II, and the supporting seat I and the supporting seat II are arranged on the working table. The first supporting seat and the second supporting seat are both fixedly installed on the top of the workbench, and protruding seats are fixedly installed on the top of the first supporting seat and the top of the second supporting seat. Through the design of the belt pulley I, the rotating shaft can be driven by the transmission of an external belt to rotate, and through the design of the spring, the sand screening barrel can be continuously knocked by the rubber rod in the rotating process of the rotating shaft, particles blocked on the sand screening barrel are promoted to fall off, the automatic cleaning function is realized, the manpower consumption is reduced, and the working efficiency is improved. And through the design of the wear-resistant paint layer, the wear-resistant performance of the rubber rod can be improved, and the service life of the rubber rod is prolonged.