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189 results about "Rock engineering" patented technology

Slope stability classification method for rock engineering

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.
Owner:JIANGXI UNIV OF SCI & TECH

Method for establishing rock multi-field coupling model and model thereof

The invention discloses an establishment method of a rock multi-field coupling model and the model thereof, and belongs to the technical field of engineering geological survey. Through comprehensive application of multi-scale modeling, a nondestructive testing technology, a machine learning algorithm and intelligent optimization, the problems that existing multi-physical field coupling analysis is not deep enough, the precision of an observation method is poor, and a device is prone to being damaged are solved, the advantages of various observations are combined, the building and analysis precision of a rock multi-field coupling model is improved, and the rock multi-field coupling analysis precision is improved. The method has the advantages that the method is simple and convenient to operate, the intelligence and automation level of the model is enhanced, microstructure data and macroscopic response are combined, deeper understanding of rock behaviors is provided, meanwhile, more accurate and efficient decision support can be provided for rock engineering design and construction, and the method is worthy of popularization and application. And a novel analysis and simulation method is provided for the field of rock mechanics research. Through the comprehensive scheme, behaviors of rocks under complex geological conditions can be better predicted and managed, so that the safety and economical efficiency of engineering are improved.
Owner:CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD +1

Method and system for automatically identifying linear structural plane in complex rock mass outcrop

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.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE +1

Method and device for determining parameters of cohesion unit

The invention provides a parameter determination method and device of a cohesion unit, and relates to the technical field of rock engineering. The method comprises the following steps: constructing a numerical model of a rock to be measured, which comprises a rock matrix unit and an embedded cohesion unit; applying a preset load to the to-be-tested rock for experimental testing to obtain a first stress-strain curve and a first peak point in the first stress-strain curve; constructing an objective function of a simulated annealing algorithm based on a stress error and a strain error between the first peak point and the second peak point; the second peak point is obtained by performing numerical simulation on the numerical model; and iteratively updating the current parameter value of the cohesion unit by adopting a simulated annealing algorithm and an objective function thereof to obtain an optimal parameter value. The parameters of the cohesion unit are automatically optimized and calibrated based on the simulated annealing algorithm, the calibration efficiency of the parameters of the cohesion unit in rock simulation can be remarkably improved, a large amount of time and manpower resources are saved on the basis of guaranteeing the parameter calibration accuracy, and the numerical simulation result is more reliable.
Owner:CHINA COAL RES INST

Earth-rock engineering molding construction method based on three-dimensional laser scanning

According to the earth-rock engineering model-based construction method based on three-dimensional laser scanning, airport earth-rock engineering is scanned based on the three-dimensional laser scanning technology, three-dimensional data of earth-rock is obtained, it is guaranteed that the obtained three-dimensional data can accurately reflect measurement data of the airport earth-rock engineering, and through the three-dimensional data based on the earth-rock engineering, the measurement data of the airport earth-rock engineering can be accurately reflected. The method comprises the following steps: establishing an earth-rock model by combining a BIM model, performing construction simulation in the earth-rock model based on construction requirements, determining target construction data according to a simulation result, ensuring the accuracy of the obtained target construction data, ensuring the construction progress and the construction quality, and finally constructing the airport earth-rock engineering according to the target construction data. And the target construction data is adjusted in real time based on the simulation construction result and the actual construction result of the earth-rock model, so that the real-time control and adjustment of the construction progress and quality are realized, and the construction progress and the construction quality are ensured.
Owner:CHINA RAILWAY BEIJING ENG GRP CO LTD +1

Deep tunnel time-delay rockburst comprehensive early warning method based on acoustoelectric technology

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.
Owner:STATE KEY LAB OF SHIELD & TUNNELING TECH +2

Excavation compensation method for tunnelling in deep rock engineering

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.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Multi-section anchoring energy-releasing anchor rod device and using method thereof

The invention discloses a multi-section anchoring energy-releasing anchor rod device and a using method thereof, and belongs to the field of underground rock engineering support of roadways, tunnels and the like. Comprising a threaded rod body, a mechanical anchoring device and a movable rod, the device utilizes the combined action of anchoring agent anchoring and mechanical anchoring in a normal state, and the static drawing force of the anchor rod is higher than that of a common anchor rod; under the action of power impact load, when the axial impact load borne by the anchoring area is larger than the bonding force between the rod body and the anchoring agent, the rod body generates certain tensile deformation to release kinetic energy accumulated in the rock mass, and meanwhile a supporting frame in the hydraulic cylinder expands outwards to restrain the anchor rod from continuously sliding; and when the surrounding rock stops deformation, the mechanical anchoring effect of the anchor rod is enhanced, and the high static drawing force is continuously kept. The device can release kinetic energy accumulated in the rock mass and enhance the anchoring capacity of the anchor rod, and has the advantages of being diversified in function, reasonable in structure, economical, applicable and the like.
Owner:CHINA UNIV OF MINING & TECH

Rock mass fracture risk early warning method, system and device based on acousto-optic data fusion and storage medium

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.
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING

Organization design optimization method for improving work efficiency of earth-rock engineering machinery

The invention relates to the field of earth-rock engineering, and discloses an organization design optimization method for improving the work efficiency of earth-rock engineering machinery, and the method comprises the following steps: S1, carrying out the modeling of each process in the earth-rock engineering through a directed acyclic graph; s2, calculating the earliest starting time and the latest starting time of each process by using a critical path method based on the process relation model, identifying a critical path of the project, and determining a critical process which affects the project construction period; s3, on the basis of the identified key process, performing process scheduling optimization by using mixed integer linear programming to ensure that the project period is minimized under resource limitation, and generating an optimized process scheduling scheme; and S4, based on the optimized process scheduling scheme, establishing a multi-stage queuing theory model, and optimizing the scheduling of the mechanical equipment. By optimizing procedure scheduling and mechanical equipment scheduling, the construction efficiency of earth-rock engineering is remarkably improved, the construction period and resource waste are reduced, and it is ensured that a project is efficiently completed on schedule.
Owner:中核(内蒙古)矿业投资有限公司 +1

Rock multi-surface direct shear test system and method considering fluid-solid coupling

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.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)

Rock damage simulation method and device

The invention provides a rock damage simulation method and device, and relates to the technical field of rock engineering. The method comprises the following steps: applying a load to a numerical model of a rock to be measured, simulating the numerical model based on least square near-field dynamics, and judging whether the numerical model has tensile failure and / or shear failure by utilizing a maximum principal stress criterion and a Mohr-Coulomb criterion; when the numerical model is not damaged, increasing the load applied to the numerical model until any damage occurs to the numerical model; and judging whether the current total load step reaches a preset total step number or not after the damage occurs, if the current load is not kept unchanged, continuing to apply the load to the numerical model until the current total load step reaches the preset total step number. According to the method, two criteria are used for identifying different damage behaviors of the rock, tensile damage and shear damage of the rock can be accurately described, the rock damage process is more accurately simulated, and disaster prediction and prevention and control in the field of rock engineering are facilitated.
Owner:CHINA COAL RES INST

Loaded fractured rock mass stress applying device and method for low-temperature freezing and thawing experiment

The invention relates to the technical field of rock engineering, in particular to a loaded fractured rock mass stress applying device and method.The loaded fractured rock mass stress applying device comprises a base, a transverse pressing plate, a longitudinal pressing plate, a transverse guide rod, a transverse spring, a longitudinal guide rod, a longitudinal spring, two pushing plates and a driving structure, and the transverse pressing plate and the longitudinal pressing plate are arranged on the base in a sliding mode; the transverse guide rod and the longitudinal guide rod are used for limiting the transverse pressing plate and the longitudinal pressing plate, the transverse spring is arranged on one side of the transverse pressing plate, the longitudinal spring is arranged on one side of the longitudinal pressing plate, the two pushing plates are slidably arranged on one side of the transverse pressing plate and one side of the longitudinal pressing plate respectively, and the driving structure is used for driving the pushing plates to move. And therefore, the pressure of the spring on one side on the pressing plate can be automatically and simultaneously adjusted, the use is more convenient, and the working efficiency is improved.
Owner:XIAN UNIV OF SCI & TECH

Device and method for testing rock crack propagation parameters under thermal shock

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.
Owner:SUN YAT SEN UNIV

Carbon slate unsteady creep model construction method based on time-stress evolution

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.
Owner:MCC CHENGDU RES INST CO LTD

Rock true triaxial aging damage mechanical model construction method

The invention discloses a rock true triaxial aging damage mechanical model construction method, which comprises the following steps of: representing rock nonlinear rheological behaviors by adopting viscoplastic strain and aging damage, and reflecting a progressive equilibrium motion process in a rock creep process by utilizing an aging damage factor; a crack azimuth angle is considered, a damage variable is adopted to control and drive a yield surface, a rock true three-dimensional yield function is provided, and a rock true triaxial aging damage mechanical model is established; finally, an explicit nonlinear numerical integration algorithm is adopted, and creep process aging damage factor evolution is accurately calculated. The rock true triaxial aging damage mechanical model provided by the invention can accurately describe rock true triaxial instantaneous and creep mechanical response, provides a theoretical basis for long-term stability research of deep rock mass excavation engineering, and provides guarantee for safety and stability of deep rock engineering construction.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1

Complex non-uniform rock mass equivalent deformation modulus calculation method and system and medium

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.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE

Real-time monitoring, regulating and controlling method for 3D printing process of laser sintering powdery material

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.
Owner:SHENZHEN UNIV

Deep rock mass engineering anchoring support system test platform and method

The invention belongs to the technical field of deep rock mass engineering anchoring support system tests, and particularly discloses a deep rock mass engineering anchoring support system test platform and method. The deep rock mass engineering anchoring support system test platform comprises a loading host, a guide rail, an anchoring body confining pressure drawing unit, an anchoring body double-shear unit, a surface protection structure performance test unit, a moving unit, a hydraulic servo system, a control system and a control system. According to the deep rock mass engineering anchoring support system test platform and method, confining pressure pull-out test, double shear test and surface protection structure performance test can be conveniently carried out through one set of test platform, the stress working condition of the anchoring support system can be truly simulated, accurate mechanical test can be carried out on the anchoring support system, and the test efficiency is improved. And the bearing capacity of the anchoring support system is tested, and the corresponding action mechanism of the anchoring support system is disclosed, so that related test results provide key theoretical and technical support for safe construction of deep rock mass engineering and efficient and safe mining of deep land resources.
Owner:SHANDONG UNIV OF SCI & TECH +2

Method and system for continuously evaluating rock mass quality by using drilled rock core

The invention relates to the technical field of rock mass quality evaluation of mining engineering and underground rock engineering, discloses a method and a system for continuously evaluating rock mass quality by using a drilled rock core, and realizes refined, comprehensive and high-precision quality evaluation of the drilled rock core. Firstly, high-resolution three-dimensional image data of a drilled rock core are obtained through a high-precision laser scanning technology, the images can record geometrical characteristics and fracture characteristics of the rock core in detail, then the three-dimensional images are automatically analyzed by adopting an advanced image processing algorithm, information such as the geometrical characteristics, the fracture characteristics and mineral components of the rock core is extracted, and the rock core is subjected to real-time monitoring. The process greatly reduces the interference of human factors, ensures the objectivity and accuracy of data, and obtains the fault zone, crack and cavity information in the rock mass through the cross-hole radar tomography technology, so that the evaluation result is more comprehensive.
Owner:NORTHWEST INST OF NUCLEAR TECH

A quantitative evaluation method for rock burst tendency of surrounding rock under multiple disturbances

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.
Owner:SOUTHEAST UNIV

Surrounding rock engineering characteristic prediction method, device and equipment for digital drilling and medium

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.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Earth-rock engineering rolling construction monitoring method and device, electronic equipment and storage medium

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.
Owner:CAAC CENTRAL SOUTHERN AIRPORT DESIGN & RESEARCH INSTITUTE (GUANGZHOU) CO LTD +1

Structural surface identification method based on rock mass outcrop point cloud data

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.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE +1

Complex rock mass stability assessment method based on back propagation neural network

The invention provides a complex rock mass stability assessment method based on a back propagation neural network, and aims to provide an efficient and accurate assessment means for rock mass stability analysis under complex geological conditions. According to the method, the rock mass numerical model is constructed, influence factors are determined, and the stability of the rock mass is quantitatively analyzed and evaluated by using the back propagation neural network, so that the multi-scale characteristics of the rock mass, the influence of an interlayer staggered belt and external loading conditions can be comprehensively considered, and the stability of the rock mass in different stress states can be accurately predicted; scientific basis is provided for rock engineering design and construction, and engineering risks are reduced.
Owner:POWERCHINA HUADONG ENG CORP LTD

Residual network-based structural surface strength prediction system and method

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.
Owner:中电建路桥集团有限公司 +1

Earth-rock engineering intelligent construction monitoring system based on data analysis

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.
Owner:山东黄河顺成水利水电工程有限公司

Design method of high-performance grouting material accurately matched with physical property structure of soft coal rock

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.
Owner:CHINA UNIV OF MINING & TECH

A surrounding rock classification method and system

The embodiment of the present invention provides a surrounding rock classification method and system, including: setting a number of pile numbers at equal intervals on one side of a cave wall; performing surrounding rock engineering geological segmentation on the cave, conducting preliminary surrounding rock classification on each of the surrounding rock engineering geological segments, and generating a preliminary surrounding rock classification table; controlling a rock impact sound decibel value detection instrument to detect the surrounding rock impact sound decibel value of each part at equal intervals along one side of the cave, and generating a surrounding rock impact sound decibel value statistical table based on the pile numbers and the surrounding rock impact sound decibel value of each part; summarizing the surrounding rock engineering geological segments belonging to the same surrounding rock preliminary classification level in the surrounding rock preliminary classification table to generate a surrounding rock preliminary level segmentation statistical table; using the surrounding rock preliminary level segmentation statistical table and the surrounding rock impact sound decibel value statistical table, calculating the average impact sound decibel value of the same surrounding rock preliminary classification level, and obtaining a surrounding rock preliminary level and average impact sound decibel value statistical table; and performing surrounding rock classification according to the surrounding rock preliminary level and average impact sound decibel value statistical table.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE

Compact booster station spatial layout method and system for mountain wind power plant

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.
Owner:POWER CHINA KUNMING ENG CORP LTD