69 results about "Pluton" patented technology

The invention relates to the technical field of mine coal and rock dynamic disaster prevention and control, in particular to a micro-seismic-based deep coal and rock mass instability dynamic multi-parameter evaluation method. The method comprises the following steps: acquiring waveform data of each micro-seismic event of a deep coal and rock mass through a mine micro-seismic system; according to the waveform data, acquiring a micro-seismic characteristic index set of each micro-seismic event; according to the seismic source position and the micro-seismic characteristic index set of each micro-seismic event, acquiring an energy-based micro-seismic magnitude; according to the micro-seismic magnitude, obtaining a micro-seismic b value corresponding to a preset duration, and according to the micro-seismic characteristic index set, obtaining a micro-fracture type and change trend information of accumulated energy of each micro-seismic event; and according to the micro-seismic energy, the change trend information of the accumulated energy, the frequency, the ringing count, the micro-fracture type and the micro-seismic b value, the dynamic instability fracture risk information of the deep coal and rock mass is obtained. According to the invention, the determination accuracy and efficiency of the instability and fracture risk information can be improved.

The invention relates to the technical field of intelligent early warning, and discloses an early warning method and system for ground pressure data of a polymetallic mine upward horizontal stratified stope, and the method comprises the steps: carrying out the time-space registration of the ground pressure data and micro-seismic monitoring data of the polymetallic mine, and obtaining a multi-source heterogeneous monitoring data flow; carrying out coupling analysis on the multi-source heterogeneous monitoring data flow to obtain a ground pressure micro-seismic collaborative feature set; evaluating target stability grades of stope roofs and surrounding rocks in the polymetallic mine; mapping the target stability level to a corresponding ground pressure activity mode in a historical case library in a rock mass quality evaluation knowledge base to obtain a threshold adjustment factor; performing nonlinear correction on the basic risk threshold value of the polymetallic ore to obtain a risk assessment threshold value; comparing the key quantitative indexes in the ground pressure microseismic collaborative feature set with a risk assessment threshold value in real time to assess the current ground pressure risk state of the polymetallic mine, and obtaining graded early warning information; according to the method, the efficiency of early warning of the pressure data of the upward horizontal stratified stope of the polymetallic mine can be improved.

The invention discloses a method for evaluating rock mass fracture freeze-thaw fracture damage risk based on surface temperature, which comprises the following steps: S1, carrying out data acquisition on a target area based on a multi-source sensor carried by an unmanned aerial vehicle platform, and obtaining fracture geometric parameters, daily surface minimum temperature, daily surface maximum temperature, daily temperature difference and fracture moisture conditions; s2, on the basis of the geometric parameters of the crack, constructing a crack frost heaving force analytical model; obtaining a quantitative relation between the stress intensity factor and the environment temperature; s3, the I-type fracture toughness of the target rock mass is measured, and the critical crack initiation temperature of the rock mass is determined; determining the number of critical freezing and thawing cycles; s4, on the basis of the daily earth surface minimum temperature, the daily temperature difference, the fracture moisture condition and the critical crack initiation temperature, the annual accumulated effective freezing and thawing cycle number is obtained; and calculating a freeze-thaw damage ratio, and carrying out risk quantification and grading. According to the invention, the problem of inaccurate evaluation caused by limitation to local monitoring and lack of an environment factor and material parameter integrated evaluation framework in the prior art is solved.

The invention relates to the technical field of rock mass mechanical property detection and stability evaluation, and discloses a rock mass stability quantitative evaluation method based on disturbance stress and fracture evolution, and the method comprises the steps: collecting the amplitude spectrum of a target rock mass; monitoring and separating internal fracture sound of the target rock mass to obtain fracture frequency; performing amplitude interference analysis on the target rock mass based on the amplitude spectrum and the fracture frequency to obtain a vibration interference factor of the target rock mass; and performing humidity compensation on the vibration interference factor based on the humidity degree in the target rock mass to obtain an environment compensation factor of the target rock mass, predicting the fracture state of the target rock mass based on the environment compensation factor and the inherent strength parameter of the target rock mass, and generating a stability evaluation report of the target rock mass based on the fracture state. According to the method, the problems that in existing rock mass stability evaluation, disturbance stress and fracture evolution dynamic association is not effectively combined, environmental interference is neglected, strength verification is lacked, and evaluation accuracy and reliability are insufficient can be solved.

The invention provides a true triaxial stratified rock disturbance damage anisotropy model and a numeralization method, and the method comprises the following steps: S1, carrying out a true triaxial static test, and researching a peak intensity rule; s2, carrying out a true triaxial multistage disturbance test, and analyzing a disturbance critical intensity rule and anisotropic disturbance damage evolution characteristics; s3, establishing an anisotropic disturbance damage evolution equation; s4, constructing a stratified rock maximum failure constitutive equation under the true three-dimensional stress; s5, constructing a viscoelastic constitutive equation in which the true three-dimensional stress disturbance effect is introduced; s6, compiling the constitutive model established in S5 into a numeralization subprogram; s7, obtaining the maximum failure function parameter of the stratified rock in the peak state; s8, acquiring a three-dimensional disturbance yield function parameter of the stratified rock in a disturbance critical state; and S9, verifying the prediction effect and applicability of the model on the stratified rock disturbance deformation evolution. According to the invention, theoretical characterization of true three-dimensional stress, dynamic disturbance and spatial stratified coupling effect of stratified rock mass deformation and failure is realized.

The invention relates to the technical field of blasting, and discloses a rock mass longitudinal wave velocity inversion method based on blast hole detonation velocity measurement, which comprises the following steps: drilling a blast hole; explosive and a monitoring probe of monitoring equipment are arranged in the blast hole; detonating the explosive, monitoring and outputting a curve chart that the propagation distance of the detonation wave changes along with the propagation time through monitoring equipment, the longitudinal coordinate of the curve chart being the propagation distance of the detonation wave, and the horizontal coordinate of the curve chart being the propagation time of the detonation wave; according to the distribution condition of each rock stratum in the blast hole, the curve graph is divided into a plurality of curve segments, and each curve segment corresponds to the propagation process of detonation waves in the corresponding rock stratum; the slope of each curve section is calculated, and actually measured explosive detonation velocities of different rock stratums are obtained; and substituting the actually measured explosive detonation velocity into the theoretical formula of the explosive detonation velocity and the longitudinal wave velocity of the rock, and inverting the longitudinal wave velocity of the corresponding rock stratum. Through the inversion method provided by the invention, detonation wave monitoring and longitudinal wave velocity inversion of different rock stratums through which the blast hole passes can be completed through one-time blasting.

This invention discloses a method, medium, and equipment for determining creep parameters of fractured rock masses based on the equivalent medium theory. The method includes: constructing a random fracture network model of fractured rock masses containing multiple sets of structural planes, and generating numerical models of fractured rock masses of different sizes; embedding the viscoelastic-plastic constitutive model of the structural planes into discrete element numerical calculation software; applying constant loads to the numerical models of fractured rock masses of different sizes, conducting numerical creep tests on the fractured rock masses, and obtaining the creep deformation time history curves of each numerical model; performing parameter inversion on the creep curves of fractured rock mass models of different sizes to determine the size range of the CREV (Crew Characterization Equivalent Value) of the fractured rock mass creep characterization unit; obtaining the equivalent viscoelastic creep parameters and equivalent viscoplastic creep parameters of the fractured rock mass; and applying the obtained parameters to long-term slope deformation analysis. This method provides a more reliable theoretical basis for the long-term stability assessment and safety prediction of hydropower, mining, and tunnel projects.

The invention relates to the field of geological recognition, in particular to an axial chain type rockburst disaster-pregnant geological recognition method and device, and the method comprises the steps: obtaining micro-seismic monitoring data in the excavation process of a deeply-buried hard rock tunnel; according to the micro-seismic monitoring data, identifying the axial chain type rockburst disaster-pregnancy area to obtain a disaster-pregnancy area range; calculating the normal vector of the fracture surface according to the disaster-pregnant area range and the micro-seismic monitoring data; establishing a parameter system and constraint conditions required by ST-DBSCAN clustering according to the normal vector of the fracture surface and the micro-seismic monitoring data; sT-DBSCAN clustering processing is carried out according to the required parameter system and constraint conditions, and a micro-seismic event cluster reflecting a potential rock mass structural plane is obtained; and performing three-dimensional reconstruction processing on a rock mass structure network according to the micro-seismic event clustering cluster to obtain a reconstructed three-dimensional geometric model of the axial chain type rockburst disaster-pregnant geology. According to the axial chain type rockburst disaster-pregnant geology three-dimensional geometric model and the construction method thereof, accurate description of a hidden rock mass structure and effective advanced early warning of a rockburst risk are realized.

The invention discloses a tunnel surrounding rock deformation prediction method based on a geological strength index and a seismic wave method, and the method comprises the following steps: S1, collecting tunnel data at a measurement point, and obtaining the surrounding rock section data of the measurement point; s2, selecting a representative rock surface at the measurement point, calculating a rock mass volume joint number and a structural surface condition factor, and determining a geological strength index value of the measurement point by using the rock mass volume joint number and the structural surface condition factor; s3, establishing a first relation model based on the surrounding rock section and the geological strength index value, wherein the first relation model is used for predicting the geological strength index value of the target point; s4, obtaining the longitudinal wave velocity and the uniaxial compressive strength of the measurement point through the tunnel data, establishing a second relation model based on the longitudinal wave velocity and the uniaxial compressive strength of the measurement point, and predicting the uniaxial compressive strength by the second relation model; and S5, generating the rock mass deformation modulus of the target point based on the predicted uniaxial compressive strength and the geological strength index value of the target point. The problem that the traditional method cannot predict in advance is solved.

This invention discloses an apparatus and method for measuring the residual stress of rock mass under non-uniform temperature, including a sample cell, a heating and temperature control system, and an X-ray diffractometer system. The sample cell includes an upper base and a lower base, and the rock mass sample to be tested is placed in the upper base. The heating and temperature control system includes a thermocouple, a heating element, and a PID temperature controller. By changing the non-uniform temperature evolution process during X-ray diffraction testing through the heating and temperature control system, the non-uniform temperature environment of the rock mass under real working conditions is simulated. In-situ testing of the rock mass under non-uniform temperature conditions is performed using the X-ray diffractometer, and diffraction peak data of the rock mass at each dipping angle ψ is collected using the dipping method, thereby determining the residual stress evolution process of the rock mass at different temperatures. Simultaneously, the rock mass sample can be subjected to stress-relief annealing treatment through the heating and temperature control system to study the changes in residual stress after stress-relief annealing treatment under different non-uniform temperature fields.

The invention provides a standard sample preparation method and a high-fidelity sampling device for a weak altered rock mass, and the method comprises the following steps: S1, determining basic geological data of an altered rock occurrence area to be sampled, and determining a sampling position; s2, after the high-fidelity sampling device is erected at a sampling position, liquid nitrogen is injected through a liquid nitrogen injection hole firstly, so that a target rock core section is quickly frozen, and then a rock core is slowly extracted; s3, identifying distribution of concealed fractures and pores in the sample after sampling, and screening out complete sections without drilling damage; packaging by adopting a multi-layer packaging process; s4, unfreezing the packaged rock core by adopting a gradient unfreezing method, preliminarily segmenting the rock core sample, and detecting the geometric dimension of the processed rock core sample; and S5, after the end face of the rock core sample is precisely ground, the sample containing the microcracks is subjected to structure repairing. According to the method, the problems of rock mass primary structure damage, mineral component loss and the like caused by a traditional process are effectively solved, and the reliability of rock mass mechanical parameter testing and the accuracy of geological engineering evaluation can be remarkably improved.

The invention relates to an in-situ solidification sampling capsule and sampling system for the rock wall of a lunar lava tube. The in-situ solidification sampling capsule comprises a penetrating shell, a hybrid driving mechanism, a plurality of storage barrels with piston structures, a static mixing nozzle and an anchoring structure, a porous injection area which is communicated with the external environment and is independent from the accommodating space is arranged in the middle of the shell in a penetrating manner; the hybrid driving mechanism is used for driving the piston structure to move in the storage barrel along one end far away from the hybrid driving mechanism; the static mixing nozzle is used for mixing the multi-component reagent and then injecting the mixed reagent into the rock wall to improve the curing effect; the anchoring structure is used for being triggered when penetrating through the shell and impacting a target rock wall, and forms mechanical occlusion with rock mass pores and cracks in the rock wall to prevent the capsule from shifting in the sampling process. The technical problems of limited sampling range, low sample fidelity, high operation risk and insufficient recovery reliability in a special lunar environment in the prior art are solved, and the sampling capacity for steep rock walls and internal rock wall sections is improved.

The application discloses a kind of based on H-B criterion experience parameter quantitative determination surrounding rock stability analysis method, including the following steps: obtaining rock material constant m i , rock uniaxial compressive strength σ ci And carry out acoustic wave test to obtain the rock mass acoustic wave velocity at different depths perpendicular to the surrounding rock surface, calculate the average acoustic wave velocity of original rock area, according to the average acoustic wave velocity combined with the quantitative calculation of wave velocity method the geological strength index GSI m0 And damage factor D, according to the change rule of damage factor D, the quantitative change relationship of damage factor D at different depths d from the surrounding rock surface is summarized, the quantitative change relationship of three experience parameters (m b , s and a) at different depths d from the surrounding rock is obtained, the equivalent continuity of three experience parameters is valued using micro-element method and numerical analysis method, and the stability of surrounding rock is evaluated.The present application lays an important foundation for subsequent surrounding rock stability analysis, disaster prevention and control and other problems.

The embodiment of the specification discloses a geothermal rock mass elastic wave reverse time migration method based on adaptive variable grid. By inputting the migration velocity model and seismic record of the geothermal rock mass, and setting the imaging parameters, the seismic wave is generated according to the migration velocity model, the seismic record and the imaging parameters; the migration velocity model is adaptively processed by variable grid, the mapping relationship between the coordinate systems is determined, and the wave equation under the variable grid is determined based on the mapping relationship; according to the wave equation, the reverse time continuation of the wave field of the receiver point wave field is carried out in the variable grid along the time reverse propagation direction, and the reverse continuation wave field is generated; the cross-correlation imaging condition is used for the forward continuation wave field and the reverse continuation wave field, the reverse time migration profile under the variable grid is generated, and the imaging result under the variable grid is obtained by stacking; the imaging result is reversely processed by the variable grid according to the mapping relationship, and the reverse time migration imaging result in the conventional coordinate system is obtained; thereby the memory occupation is reduced, and the calculation is fast.

The present application belongs to the technical field of geological prospecting and evaluation, and discloses a kind of ore body positioning method and rapid sampling device for niobium-tantalum ore target area prediction and evaluation.The present application is based on existing geological data, through the analysis of various geological bodies in 1:250,000-1:10,000 geological map and the identification of the distribution, shape, intrusive contact relationship and formation age of alkaline rock mass, the favorable metallogenic area is delineated;Through satellite and aerial image identification of linear structure, ring structure and alteration information, target area positioning is assisted;Through magnetic exploration, ore-bearing rock mass and fault structure are detected, and potential position of ore body is delineated, combined with geological data, geological properties of anomaly source are inferred;Using radioactive detection equipment, the total amount of gamma at different positions in the niobium-tantalum prediction target area is measured, and the position of niobium-tantalum ore is preliminarily judged according to the gamma anomaly result;Using rapid sampling device, target area is systematically sampled and analyzed.Through the method and device, metallogenic geological conditions and prospecting potential can be evaluated, and exploration grid is optimized.

The invention discloses a broken ore body stoping method, relates to the technical field of mineral exploitation, and aims to improve the safety and efficiency of broken ore body exploitation. The method comprises the following steps that firstly, the trend, dip angle, thickness and rock mass integrity coefficient Kv of an ore body are obtained by combining three-dimensional seismic exploration with drilling CT scanning, independent mining units are divided according to the trend, dip angle, thickness and rock mass integrity coefficient Kv, safety isolation jambs are arranged, and then weak, medium and strong crushing subareas are divided according to the Kv value; secondly, pre-stressed anchor cables are constructed in the trend of the ore body to form a main bearing frame, and a corresponding supporting scheme is adopted in each sub-area; then, blast holes are arranged parallel to the trend of the ore body, the explosive loading amount is adjusted according to the crushing degree, segmented detonation is conducted, and the thin ore body is mechanically sawn for ore breaking; and finally, three-dimensional laser scanning monitoring points are arranged, tailings are cemented and filled immediately after the strong crushing area is mined out, and surrounding rock natural caving is triggered after the middle and weak crushing area is mined out temporarily and adjacent units are stoped. According to the method, differentiated mining and supporting are achieved, safety is guaranteed, and the resource utilization rate is increased.

The invention provides a method for determining the migration distance of nuclide in a fractured rock mass by considering multistage decay, and relates to the technical field of radioactive waste deep geological disposal safety evaluation. According to the method, a random discrete fracture network rock mass model is constructed based on actual site geological information or statistical laws, a unified pipe network method is adopted to discretize a fracture-matrix system into a flow network formed by nodes and pipelines, and a coupling discrete control equation set of multi-nuclide migration is established under the framework; convection, dispersion, diffusion, adsorption retardation and multistage decay processes are synchronously depicted. Spatial and temporal distribution data of nuclide concentration are obtained through numerical solution, the farthest migration distance of mother nuclide is extracted, fracture connectivity density parameters are introduced to carry out quantitative analysis on fracture structure influence, and then an empirical relational expression used for predicting the maximum migration distance is obtained through fitting. According to the method, the nuclide migration ability can be rapidly evaluated under the complex fracture condition, and a quantitative basis is provided for radioactive waste disposal safety evaluation.

The embodiment of the application relates to the technical field of seismic exploration, and discloses a brittle prediction method, device, equipment and medium for a rock reservoir, the prediction method comprising the following steps: based on well logging data of a target rock reservoir, a target layer section of the target rock reservoir is constructed according to rock components and rock physical characteristic parameters, so as to construct a rock physical model for representing the relationship between the volume modulus, shear modulus, rock density and the content of main brittle minerals of the rock; a model of a brittle indicator factor is constructed according to the rock physical model and the change of the content of the main brittle minerals, the brittle indicator factor being used for representing the relative brittle degree of the rock mass; and the brittle indicator factor is converted into actual brittleness for representing the actual brittle degree of the rock mass. The brittle prediction method disclosed by the application fully utilizes the rock physical characteristic analysis of the target rock reservoir to analyze the influence of the brittle minerals on the brittle prediction, and effectively improves the rationality and accuracy of the rock brittle prediction.

The application relates to the technical field of surrounding rock damage detection, and relates to a rock mass damage degree evaluation method.The method comprises the following steps: collecting microseismic data corresponding to each microseismic event through a microseismic monitoring system arranged on a rock mass to be monitored and recording microseismic moments.According to the microseismic data corresponding to the microseismic event occurring at each microseismic moment, the rock mass fracture form and the rock mass damage amount of the microseismic event occurring at the microseismic moment are determined.According to the rock mass fracture form of the microseismic event occurring at the microseismic moment and a preset fractal dimension algorithm, the microseismic time dimension value corresponding to the microseismic event occurring at the microseismic moment is determined.According to the microseismic time dimension value corresponding to the microseismic event occurring at each microseismic moment and the rock mass damage amount, a rock mass damage degree evaluation index is determined.The application can analyze and evaluate the whole process of gradual accumulation of rock mass damage and can determine the signs of underground disasters.

The invention discloses a surrounding rock brittle failure area grade discrimination method and system, and belongs to the technical field of underground engineering surrounding rock disaster early warning, and the method comprises the steps: building a surrounding rock brittle failure case database, and obtaining each micro-seismic parameter reflecting the cumulative fracture frequency, strength and deformation characteristics of a rock mass; determining the number of cases of different grades corresponding to each micro-seismic parameter by obtaining the division grade of the brittle failure area; according to the surrounding rock brittle failure case database, the number of matched surrounding rock brittle failure cases of different grades is determined by obtaining a threshold value of a single micro-seismic parameter; determining a total coincidence rate corresponding to each candidate decision tree and a case discrimination coincidence rate corresponding to the single microseismic parameter according to the case number and quantity; and when the total coincidence rates are the same, judging the coincidence rates according to the case corresponding to the single micro-seismic parameter, and determining the brittle failure grade of the surrounding rock under the multi-micro-seismic parameter criterion in the space region. According to the method, the surrounding rock brittle failure area grade discrimination precision and stability can be improved.

The application discloses a laser-dry ice jet combined rock breaking device and method, which comprises two mechanical arms (102, 103) and laser cutting heads (203) and dry ice jet spray guns (302) arranged on the two mechanical arms (102, 103) respectively. In the rock breaking operation, the two mechanical arms (102, 103) drive the laser cutting heads (203) and the dry ice jet spray guns (302) to break rocks in front and back respectively. The application utilizes dry ice and laser to break rocks, and greatly improves the rock breaking capacity. First, the laser breaks rocks through the thermal cracking principle, and at the same time, the temperature of the rocks is raised. Then, the dry ice jet impacts the heated area. On the one hand, the impact force contained in the dry ice jet itself can cause the rock mass to break and can also take away the molten rock. On the other hand, the dry ice contacts the high-temperature rock, rapidly sublimates, causes local rapid cooling, and the rock mass is damaged due to the uneven heating and inconsistent shrinkage. When the dry ice sublimates, its volume expands by more than 800 times, and the "micro-explosion" effect further breaks the rock.

The invention relates to a brittleness index evaluation method and system for a high-temperature and high-confining-pressure fractured rock mass, and belongs to the field of rock mass mechanics, and the method comprises the following steps: step 1, obtaining a stress-strain relational graph of the fractured rock mass under different high-temperature and high-confining-pressure conditions through a triaxial compression experiment; 2, mechanical parameters of the fractured rock mass under different conditions are extracted based on the stress-strain curve, and energy distribution of all stages is calculated; 3, establishing an initial brittleness evaluation index; and 4, establishing a correction factor by adopting an entropy weight method, and correcting the initial brittleness evaluation index to obtain a final brittleness evaluation index. The method can quantitatively evaluate the brittleness index of the fractured rock mass under the conditions of high temperature and high confining pressure, and provides a new method for evaluating the brittleness of the high-temperature and high-pressure rock.

The application discloses a kind of underground rock mass magnetic target positioning method, system, equipment, medium and product based on aeromagnetic three-component data, it is related to geophysical prospecting field, the method includes obtaining the aeromagnetic three-component data of multiple measuring points in measurement area;According to the aeromagnetic three-component data of multiple measuring points in the measurement area, the magnetization direction of the magnetic target in the measurement area is determined;The magnetization direction includes total magnetization dip angle and total magnetization declination;According to the aeromagnetic three-component data, the position and magnetic susceptibility of the magnetic target in the measurement area are determined using step-by-step weighting inversion method.The present application can effectively utilize the rich geological information in aeromagnetic three-component data, combined with step-by-step weighting inversion method to improve the stability and resolution of inversion, can quickly and accurately obtain the position and direction information of underground rock mass.

The invention discloses a method for predicting surrounding rock instability of a tunnel passing through a water-rich fault zone induced by blasting construction, and aims to solve the problem that when the tunnel passes through the water-rich fault zone, dynamic load disturbance easily induces surrounding rock instability damage due to weak and broken rock mass and high water content. On the basis of the sharp point mutation theory, the combined action of the dynamic load and underground water is considered, a theoretical analysis model for the tunnel surrounding rock instability of the excessive water-rich fault zone is constructed, the stress deformation characteristic and the stability change rule of the tunnel surrounding rock of the excessive water-rich fault zone under the action of the dynamic and static loads are discussed, and the tunnel surrounding rock instability mechanism of the excessive water-rich fault zone is disclosed. And a theoretical criterion that the dynamic disturbance induces the instability of the tunnel with the water-rich fault is obtained. According to the determined method, the characteristics of surrounding rock instability of tunnel construction in the excessive water-rich fault zone are fully considered, the mechanical mechanism of the surrounding rock instability of the tunnel in the excessive water-rich fault zone is deeply analyzed by constructing a sharp point mutation theoretical analysis model, and the tunnel surrounding rock instability mechanism and the mechanical criterion of the surrounding rock instability are deduced; and a mechanical discrimination formula of tunnel surrounding rock instability is obtained.

The invention relates to a rutile-based porphyry type copper ore hydrothermal evolution and mineralization prediction method. The method comprises the following steps: marking the position of rutile in a rock mass sample; dividing the rock mass sample at the same position into two parts, preparing one part of the rock mass sample into a probe piece, delineating the position of rutile in the probe piece, and determining the enrichment degree, occurrence state, color and particle size of the rutile in different alteration zones according to the crystal form and internal structure characteristics of the rutile; performing rutile backscatter photography and energy spectrum analysis to obtain the variation trend of the inclusion mineral content of the rutile in different alteration zones; performing in-situ micro-area element analysis on the other part of rutile to obtain content data of main trace elements in the rutile; and based on the position of the rutile alteration zone, the hydrothermal center is determined, and then the mineralization potential is determined. According to the method, the efficiency and accuracy of prospecting from the porphyry type copper ore bed are improved, and the problems that prospecting of the deep edge of the ore bed is large in difficulty, long in period and low in efficiency are solved.

The embodiment of the invention provides an ABC-SVM method suitable for seabed ore deposit rock mass quality evaluation, and belongs to the technical field of data processing, and the ABC-SVM method specifically comprises the following steps: 1, constructing an evaluation index system corresponding to a seabed ore deposit rock mass; step 2, normalizing the collected seabed ore deposit rock mass sample data according to the evaluation index system to obtain a training set; 3, initializing parameters of the SVM model, selecting a kernel function corresponding to the parameters, and defining a fitness function corresponding to the kernel function; step 4, optimizing parameters of the SVM model by using an artificial bee colony algorithm to obtain an initial model; 5, training the initial model by using the training set to obtain a seabed ore deposit rock mass quality evaluation model; and step 6, obtaining target ore deposit rock mass data and inputting the target ore deposit rock mass data into the seabed ore deposit rock mass quality evaluation model to obtain a quality grading evaluation result. Through the scheme disclosed by the invention, the evaluation accuracy and adaptability are improved.

The invention discloses a high-temperature true triaxial rock mass shear fracturing three-way dynamic seepage heat exchange coupling test system, and relates to the field of hot dry rock mining. Comprising a true triaxial rock direct shear testing machine, a true triaxial direct shear box, a normal force loading device, a lateral force loading device, a shear force loading device, a heating temperature control device, a water injection device, an effluent collection device, a water temperature monitoring device and a controller, a chamber for accommodating a test rock sample is formed in the true triaxial direct shear box, and the true triaxial rock direct shear tester, the heating temperature control device, the water injection device, the outlet water collection device and the water temperature monitoring device are all connected with the controller. The high-temperature true triaxial rock mass shear fracturing three-way dynamic seepage heat exchange coupling test system can comprehensively characterize the seepage heat transfer evolution characteristics of a natural fracture surface in the water injection shear process, so that the test process is simpler, and the automation degree of the test process is improved.

The invention relates to the technical field of risk assessment of weakly cemented rocks, in particular to an assessment method for underground water erosion damage of weakly cemented rocks. The method comprises the steps of collecting seismic exploration data of each detection point, calculating seismic wave characteristic coefficients of target weakly cemented rock mass layers of different depths based on the seismic exploration data, and collecting rock-soil component parameter data corresponding to each drill hole in the target weakly cemented rock mass layers, calculating a permeability coefficient corresponding to each drill hole based on the rock-soil component parameter data; performing Bayesian inversion analysis on the permeability coefficient corresponding to each drill hole to obtain the groundwater erosion damage possibility of the target weakly cemented rock mass layer, evaluating the risk of groundwater erosion damage of the target weakly cemented rock mass layer based on the groundwater erosion damage possibility, and accurately dividing the wave impedance interface of the weakly cemented rock mass. The reliability of rock mass structure detection is improved, and the real risk level of underground water erosion damage of the weakly cemented rock mass can be reflected more comprehensively and objectively.

The invention discloses a dynamic fracturing-grouting combined reinforcement construction method suitable for broken surrounding rock, which comprises the following steps: acquiring a brittleness index, rock mass integrity, a crack development index and a crustal stress ratio of the surrounding rock, and calculating a comprehensive fracturing index according to the brittleness index, the crack development index, the rock mass integrity and the crustal stress ratio; according to the comprehensive fracturing indexes, the strata are divided into four grades including the extremely-easy fracturing grade, the fracturing grade, the difficult fracturing grade and the extremely-difficult fracturing grade; drilling holes are arranged according to stratigraphic division grades; monitoring sensors are arranged in the drill holes, and a real-time fracturing-grouting dynamic regulation and control system is established; a mixed solution of fracturing fluid and a propping agent is pumped into the well, fracturing operation is conducted, high-pressure fluid forms a crack in rock and enables the crack to extend, the propping agent is embedded into the crack face to resist the ground stress closing effect, the wellhead pressure, the injection volume and the pumping rate are monitored in real time in the whole process, and it is ensured that the fracturing process is stable and controllable; and grouting parameters are adjusted and controlled in a self-adaptive mode.

This invention provides a method and system for preparing and testing composite specimens of fractured rock mass and infill material, relating to the field of rock mass and infill material performance testing technology. The preparation method includes: processing homogeneous rock blocks into initial rock specimens; performing pre-splitting treatment and detecting the rock mass quality grade of the specimens; determining whether the rock mass quality grade of the specimens matches the target rock mass quality grade and using the matched pre-splitting rock specimen as the target fractured rock specimen; setting up a formwork space and pouring infill slurry and curing. Through homogeneous rock block processing and adjustable pre-splitting, the defects of easy damage and large dispersion in on-site core sampling are avoided; based on the comparison between the detected fracture grade and the on-site target grade, an iterative closed-loop mechanism of dynamically adjusting pre-splitting parameters can be used to repeatedly prepare rock samples under the same conditions as the on-site fracture degree in batches; the cast composite specimens highly replicate the actual engineering structure, laying a reliable material basis for accurately conducting complex comparative mechanical tests.