137 results about "Rock engineering" patented technology

The invention relates to the technical field of geological disaster prevention and control, in particular to a rock engineering slope stability classification method. According to the technical scheme, the method comprises the following steps: obtaining spatial distribution characteristics of a slope structural plane through combined detection of three-dimensional laser scanning and a geological radar, and establishing a quantitative index system containing occurrence, density and connectivity of the structural plane; the method comprises the following steps: acquiring a fracture signal in a slope in real time by adopting a micro-seismic monitoring system, and extracting a micro-seismic event energy release rate, a dominant frequency offset and a seismic source mechanism parameter through time-frequency analysis; and constructing a geologic structure evolution inversion model, reconstructing a geologic structure evolution process based on the regional geologic database and the field drilling data, and calculating the distribution characteristics of the residual stress field of the structure. According to the method, comprehensive, accurate and real-time monitoring and classified evaluation of the rock engineering slope stability are realized, potential risks can be effectively predicted, a scientific and accurate decision basis is provided for slope support and treatment, and the safety and stability of the rock engineering slope are greatly guaranteed.

The invention provides an automatic identification method and system for a linear structural plane in a complex rock mass outcrop, and belongs to the field of rock mass engineering, and the method comprises the steps: obtaining a DeepLabV3 + model of a rock mass outcrop image, carrying out the semantic segmentation of an input image, outputting a binary mask image of the trace pixel of the structural plane, and carrying out the topology reconstruction; establishing a mapping relation between the image coordinate system and the three-dimensional point cloud; calculating a space included angle between the direction vector of the trace and the average occurrence of the structural plane groups, classifying the three-dimensional point cloud data according to the structural plane groups according to an angle threshold value, and performing three-dimensional line segment extraction by adopting an improved iterative Hough transform algorithm; and realizing global multi-segment connection and trace length calculation of discrete segments based on a greedy algorithm. The method breaks through the limitation of a topographic region when the rock mass structural plane data is obtained through manual measurement, and improves the precision and efficiency of structural plane extraction in the complex rock mass.

The invention provides a deep tunnel time-delay rockburst comprehensive early warning method based on an acoustoelectric technology. The method is applied to the technical field of tunnel and underground engineering disaster early warning and comprises the steps that a micro-seismic sensor array is arranged in a deep tunnel rock engineering target area, and a micro-seismic monitoring system is built; positioning a micro-seismic event and seismic source parameter information for the collected micro-seismic signals, and determining a key monitoring area of a rock mass fracture damage area; carrying out point location monitoring on the key monitoring area of the rock mass fracture damage area by using an electromagnetic radiation monitoring instrument; establishing a time-delay rockburst early warning index system; a comprehensive early warning model is established, and fuzzy mathematics comprehensive evaluation is conducted on the time-delay rockburst; obtaining a rockburst main control factor membership degree function according to a micro-seismic and electromagnetic radiation monitoring data statistical result; obtaining a fuzzy matrix R of the time-delay rockburst according to the membership function of the main control factors of the rockburst; and outputting an early warning result. In this way, the accuracy of rockburst early warning can be improved.

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 invention discloses a device and a method for testing rock crack propagation parameters under thermal shock. The testing device comprises a base. A first abutting piece is arranged at the end of the supporting plate; the pressure applying mechanism is telescopic, and a second abutting piece is arranged at the end of the pressure applying mechanism; the heating piece comprises a first heating plate and a second heating plate, the first heating plate is provided with a first through hole for the first abutting piece to pass through, and the second heating plate is provided with a second through hole for the second abutting piece to pass through; and the coil surrounds the outer side of the heating piece, and the coil heats the heating piece through electromagnetic induction. According to the testing device, the rock sample is heated through the heating piece, and the rock sample is uniformly heated through the first heating plate and the second heating plate. Through the first abutting piece and the second abutting piece which are arranged in a staggered mode, when the pressure applying mechanism applies pressure, the rock sample can be subjected to torsional force so as to observe the crack propagation condition of the rock sample. The invention relates to the technical field of civil engineering and rock engineering.

The invention belongs to the technical field of rock engineering, discloses a carbonaceous slate unsteady creep model construction method based on time-stress evolution, and aims to solve the problem that creep parameters of existing carbonaceous slate cannot be accurate due to the fact that the creep parameters are regarded as constants or expressed by a nonlinear function. The unsteady creep model comprises an improved generalized Kelvin body and a Newton body with a switch, wherein the Newton body takes the stress level into consideration, and the improved generalized Kelvin body is connected with the Newton body with the switch in series. According to the method, more accurate creep parameters of the carbonaceous slate can be obtained, and a theoretical model is provided for tunnel surrounding rock creep deformation research and tunnel long-term stability analysis of a carbonaceous slate stratum tunnel penetrating through an extremely high crustal stress area.

The invention discloses an equivalent deformation modulus calculation method and system for a complex uneven rock mass and a medium. Relates to the technical field of rock engineering. The method comprises the following steps: partitioning according to geological information of rock masses and counting proportions, then respectively carrying out sound wave testing on the rock masses in different regions to obtain single-hole sound wave velocities, and calculating deformation moduli of the rock masses in each region by utilizing a correlation relationship between the single-hole wave velocities and the deformation moduli; a mixed equivalent model of strain coordination and stress coordination is constructed based on the rock mass strain energy proportion so as to calculate the equivalent deformation modulus of the special uneven rock mass; a new thought is provided for obtaining deformation modulus parameters containing multiple types of altered rocks, meanwhile, a targeted investigation and test scheme is provided, and an important basis is provided for design of rock mass slopes, caverns and the like.

The invention provides a real-time monitoring, regulating and controlling method for the 3D printing process of a laser sintering powdery material. The method comprises the steps that 100, a multi-dimensional sensing system collects data; 200, a data processing system processes the data; 300, an intelligent decision making system calculates a decision; the method is suitable for high-precision preparation of the laser sintering powdery material sample in a rock mechanics experiment, precise recarving of complex structural characteristics such as microcracks and pores in natural rock can be achieved through multi-modal information fusion and a closed-loop control strategy, and key technical support is provided for research of rock engineering materials.

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 provides a structural surface identification method based on rock mass outcrop point cloud data, and relates to the technical field of rock mass engineering, and the method comprises the steps: obtaining the rock mass outcrop point cloud data, carrying out the partitioning of the rock mass outcrop point cloud data based on an octree principle, obtaining points in each partition, traversing the points in each partition, and carrying out the recognition of the structural surface of the rock mass outcrop point cloud data. The method comprises the steps of obtaining a normal vector of each point based on principal component analysis, determining a clustering center of the normal vectors based on kernel density estimation, classifying the normal vectors of the points to clustering centers based on the clustering centers of the normal vectors by adopting a fuzzy C mean value method, and obtaining point cloud data forming each group of structural surfaces by representing each group of structural surfaces. Secondary clustering is carried out on the point cloud data of the structural plane based on the spatial density algorithm, the boundary of the structural plane is recognized, the problem that existing structural plane recognition is low in efficiency is solved, and the method is suitable for structural plane recognition.

The invention discloses a residual network-based structural surface strength prediction system and method, relates to the technical field of geological engineering, and aims to solve the technical problems of low efficiency and insufficient precision due to dependence on field measurement and empirical formulas in a current method. Comprising a residual network feature extraction unit, a spatial expansion convolutional neural network and a dynamic DBSCAN clustering unit, wherein the residual network feature extraction unit is used for performing feature extraction on a GPR image by utilizing a residual network; the spatial expansion convolutional neural network is combined with a spatial expansion convolutional enhanced receptive field to capture wider context information; according to the rock mass structural surface strength prediction system and method based on the GPR three-transient characteristics and the residual network, multi-source data are fused, the deep learning technology is applied, the algorithm process is optimized, and the structural surface strength is predicted. Accurate prediction of rock mass structural plane strength and intelligent generation of a structural plane network are realized, and powerful support is provided for design and construction of rock engineering.

The invention discloses an earth-rock engineering intelligent construction monitoring system based on data analysis, and relates to the field of earth-rock engineering, and the system comprises a construction module which is used for uploading building foundation pit specification parameters, and constructing a building foundation pit standard model based on the building foundation pit specification parameters; the live-action modeling module is used for collecting real-time excavation state parameters of the building foundation pit and constructing a building foundation pit live-action model based on the excavation state parameters; according to the method, the building foundation pit standard model and the building foundation pit live-action model are respectively constructed through the building foundation pit design specification parameters and the live-action acquisition parameters, the safety of the building foundation pit form is judged in real time in the middle and later periods of building foundation pit excavation through similarity comparison of the two models, and when the judgment result is unsafe, the safety of the building foundation pit form is ensured. The defect position of foundation pit excavation is traced in real time, so that the foundation pit form defect probability is controlled in the excavation forming process of the building foundation pit, the backfill workload caused by excessive excavation is reduced, and it is ensured that the excavation engineering process of the building foundation pit is stably advanced.

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 present application provides a GPR detection imaging method, device and processing equipment for the development of frozen walls. Based on the signals collected by GPR detection, the correlation between each channel of signals is additionally considered, and secondary imaging is realized through the cross-correlation backprojection algorithm, avoiding the interference brought by the complexity conditions of electromagnetic interference detection environments such as shield segments. In this way, the resolution and imaging accuracy can be effectively improved, which helps to more clearly complete the identification of the development of frozen walls and meet the high-quality data usage requirements of rock engineering involving AGF.

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 utility model discloses a compacting and leveling device for earth-rock engineering, and relates to the technical field of earth-rock engineering. The compacting and leveling device for the earthwork engineering comprises a compacting and leveling device body, a rotating shaft is assembled in the compacting and leveling device body, and a rolling wheel is assembled on the side face of the rotating shaft; the compacting and leveling device comprises a compacting and leveling device body, a damping assembly is arranged in the compacting and leveling device body, the damping assembly comprises a fixing plate, the bottom of the fixing plate is connected with a damping rod by arranging a first spring, a damping groove is formed in the compacting and leveling device body, and the inner wall of the damping groove is fixedly connected with an elastic rubber block. According to the compacting and leveling device for the earthwork engineering, when the compacting and leveling device body is used, under the condition that a rolling wheel vibrates, a rotating shaft, a damping groove, an elastic rubber block, a torsional spring rod, a transmission rod and a rubber wheel are matched, so that double damping is further conducted on a damping rod and an arc-shaped stress plate, and the rolling effect of the device is improved.

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.