233 results about "Pluton" patented technology

The invention relates to a fractured rock stratum water-rich tunnel excavation water inrush early warning method and system. The method comprises the steps that real-time monitoring data in the tunnel excavation process are obtained; based on the real-time monitoring data, predicting by using the water flow inrush prediction model, and generating a water flow inrush amount prediction result; analyzing crack propagation, deformation and instability conditions of the surrounding rock of the tunnel under different excavation parameters through the rock mass damage evaluation model in combination with the real-time monitoring data, and generating a rock mass damage evaluation result; generating a construction optimization scheme based on the water flow inflow prediction result and the rock mass damage evaluation result; comparing the real-time monitoring data with a preset safety threshold value, and judging whether a water inrush risk or a surrounding rock instability risk exists or not; if the real-time monitoring data exceed the preset safety threshold value, a safety early warning signal is triggered, and emergency measures are taken immediately. The method has the effect of improving the safety in tunnel construction.

The invention provides a marine unfavorable geology reef limestone grouting strength prediction method based on a pore structure. The method comprises the following steps: calculating a reef limestone rock pore value of a reef limestone rock pore volume accounting for a reef limestone rock mass volume; performing size classification on the equivalent diameters of the communicated pores in the reef limestone, and calculating the volume ratio of each type of communicated pores; calculating the pore sphericity of the pore particles according to the pore particle surface area and the pore particle volume; classifying the pore particles according to the pore sphericity, and calculating the sphericity ratio of each type of pore particles; calculating a seepage coefficient based on the pore value of the reef limestone rock, the volume ratio of various communicated pores and the sphericity ratio of various pore particles; calculating the flow of the slurry flowing in the reef limestone rock under the action of different pressures according to the seepage coefficient; and calculating the tensile strength of the reef limestone rock based on the flow before and after grouting. Through accurate permeability analysis, the construction risk and cost are reduced, and meanwhile the bearing capacity of the foundation base is improved.

The invention provides a new method for calculating the borehole wall collapse pressure of a fractured shale stratum, which comprises the following steps of: 1, preparing an experimental rock sample, and carrying out sound wave characteristic test on bed rock and a fractured rock sample and mechanical experiment test on the rock sample; step 2, calculating an integrity coefficient K upsilon, a geological strength index GSI, a rock mass disturbance coefficient D and a lithology index mi of the rock; 3, a Hoek-Brown strength criterion for evaluating the fractured formation based on sound waves is established; 4, a principal stress expression of the well walls of the inclined well and the horizontal well is obtained through calculation; and 5, establishing a fractured oil shale formation borehole wall collapse pressure calculation model. According to the new method for calculating the well wall collapse pressure of the fractured shale formation, the problem that a conventional homogeneous formation collapse pressure calculation model is not suitable for well wall stability prediction of the fractured shale formation is solved, and a new theoretical basis and technical support are provided for the well wall stability problem in the oil shale exploitation process.

The invention discloses a method for analyzing the influence of a rock mass multi-scale structure on deep geothermal reservoir circular mining, and relates to the technical field of geothermal resource development and rock mechanics, and the method comprises the following steps: establishing a reservoir rock mass mechanical analysis model and a seepage heat transfer analysis model which simultaneously comprise a microscopic microcrack structure and a macroscopic crack structure; based on the reservoir seepage heat transfer analysis model, reservoir temperature field and seepage field analysis is carried out, and water pressure and temperature distribution results are transmitted to the mechanical analysis model; based on the reservoir mechanical analysis model, reservoir stress and deformation analysis under the heat-water-force coupling effect is carried out, and changes of microcosmic microcrack and macroscopic crack structures in the reservoir rock mass are obtained; the rock mass permeability evolution equation and the porosity evolution equation are adopted to calculate the reservoir rock mass permeability tensor and the porosity, and the reservoir rock mass permeability tensor and the porosity are transmitted to the seepage heat transfer analysis model; and solving the reservoir temperature field, the water pressure field and the mechanical response in the geothermal circulation exploitation process by adopting a seepage heat transfer analysis and mechanical analysis staggered iteration mode. By analyzing the reservoir temperature, the water pressure, the deformation evolution response and the reservoir permeability change in the geothermal exploitation process, geothermal exploitation design and protection can be reasonably carried out, and the application prospect is good.

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 discloses a method for evaluating the mineralization potential of porphyry copper-(gold-molybdenum) ore. The evaluation method comprises the following steps: determining candidate rock masses with relatively high mineralization potential according to an oxygen fugacity value of magma zircon and / or a magma water content value of hornblende in a rock sample in an evaluation area; the aluminum saturation index ASI of the candidate rock mass is measured and calculated, the distribution coefficient and the distribution coefficient ratio of Cu, Au and Mo between fluid and melt are determined according to the ASI, simulation calculation is conducted through a Rayleigh fractionation model according to the distribution coefficient and / or the distribution coefficient ratio, and the content ratio of Au to Cu to Mo to Cu of the candidate ore body is obtained. According to the method, the mineralization potential of the porphyry copper ore and the enrichment degree and grade of Cu, Au and Mo of potential ore bodies can be rapidly and accurately evaluated.

The invention discloses a fractured rock mass random field implementation method considering spatial variability under a three-dimensional geological structure. The method comprises the following steps: determining the size of a three-dimensional background grid region and the number of background nodes in each direction according to a rock mass region and the size of a rock mass unit; setting mathematical statistical characteristic variable values in the three-dimensional random field; a covariance matrix is constructed, a Karhunen-Loeve series expansion method is adopted for decomposition, and random field approximate values are generated at background grid points; based on the geological structure type of the rock mass area, performing spatial transformation operation and movement on the background grid; background grid points are quickly selected and judged, and random field values of rock mass units are obtained through shape function interpolation; the random field value is adjusted through mean value regression and standard deviation regression, and rock mass mechanical parameters are given; and when the random field ratio of the rock mass units on the two sides of the joint unit is judged to be larger than a set threshold value, weakening the mechanical property of the joint as a fracture. According to the invention, rock mass spatial variability under a three-dimensional geological structure can be simulated, and spatial distribution of fractures can be realized.

The invention relates to a nanoscale grouting method for illite-smectite mixed layer surrounding rock, which is characterized by comprising the following steps of: S1, combined detection of a borehole television and a ground penetrating radar or a geological radar: carrying out rock mass structure detection in a manner of combining the borehole television and the ground penetrating radar or the geological radar, and obtaining a deformation rule of a roadway and surrounding rock in an area; s2, arranging grouting pipes and an exhaust pipe: arranging two long and short grouting pipes and one exhaust pipe in the grouting hole according to the deformation rule of the roadway and the surrounding rock in combination with numerical simulation of rock mass mechanics and the result of the numerical simulation; s3, grouting is conducted, specifically, grouting is conducted in a deep and shallow hole matching grouting mode; s4, secondary splitting grouting reinforcement is conducted, specifically, the mine illite-smectite mixed layer surrounding rock is reinforced through a secondary splitting grouting technology, the unfilled part in the primary grouting process is made up, and it is ensured that all gaps are filled with grout; and the illite smectite mixed layer surrounding rock can be grouted well.

The invention provides a method and a system for determining a failure mode and an anchoring length of a steep dip thin-layer slope. The method comprises the following steps of: performing a drilling experiment in a partially excavated area of a slope to be supported; obtaining a rock mass relaxation depth test value LM, a rock mass longitudinal wave velocity mean value Cp1 within a relaxation range, a rock mass longitudinal wave velocity mean value Cp0 outside the range and a layer thickness delta of a side slope lamellar rock mass; establishing a spreading joint model for the slope to be supported; a damage coefficient D is constructed based on a material constant R, a rock mass longitudinal wave velocity mean value Cp1 within a relaxation range, a rock mass longitudinal wave velocity mean value Cp0 outside the range and a layer thickness delta of a side slope lamellar rock mass; based on the rock mass relaxation depth test value LM and the damage coefficient D, the deformation modulus E0, the layer cohesive force cL0 and the friction angle phi L0 in the layer of the spreading joint model are corrected; and calculating the relaxation depth by adopting the corrected spread joint model so as to determine failure modes and anchoring lengths of different anchoring points.

The invention relates to the technical field of seepage detection, and provides a water curtain hole fractured rock mass seepage detection method and device and a storage medium, when the inner wall of an oil storage chamber has a water seepage area meeting the water seepage condition, potential associated water curtain holes having a water guide association relationship with the water seepage area above the water seepage area are determined; when the potential associated water curtain hole is a target abnormal water curtain hole, preliminarily determining a preliminary water guide structure between the water seepage area and the target abnormal water curtain hole, acquiring in-hole geological structure development information of the target abnormal water curtain hole, and determining an in-hole abnormal interval according to the in-hole geological structure development information; and determining a target water guide structure between the water seepage area and the in-hole abnormal interval, and taking the target water guide structure as a target area for seepage control treatment. According to the method, the specific position, the permeability characteristic and the grouting characteristic of the water curtain hole water guide structure can be accurately and rapidly detected, so that local grouting treatment of water guide cracks is performed through the water curtain holes in a targeted manner, and the water seepage amount of the oil storage cavern is effectively controlled.

The invention relates to the field of numerical simulation calculation, and particularly discloses a calculation method of a water-rich rock mass fracture grouting diffusion process under a slurry-water mixing effect, which comprises the following steps: (1) respectively calculating the relationship between the width X of a slurry-water mixing area and the grouting time t under one-dimensional fracture and two-dimensional fracture grouting diffusion working conditions; and (2) calculating the relationship between Ry, Rm and t under the two working conditions. And (3) calculating a slurry concentration space distribution equation under the two working conditions. And (4) calculating the spatial distribution equation of the rheological parameters of the slurry under the two working conditions. And (5) respectively calculating grout flow control equations expressed by the grouting flow q under the two working conditions. And (6) calculating a pressure space distribution equation in the grouting diffusion area under the two working conditions. And (7) calculating a relational expression between the grouting pressure and the time at the inlet under the two working conditions. By means of the relational expression, effective prediction of the grouting pressure and the grouting diffusion radius in the grouting diffusion process can be achieved, and the prediction precision of the grouting diffusion process is greatly improved.

The invention discloses a method for deducing a jointed rock-soil body material creep model based on a complete rock-soil material creep model, which comprises the following steps: carrying out a uniaxial compression creep test on a complete rock sample and a crack sample, establishing a relationship between a complete rock and a crack rock body, constructing an aging damage function D (t), obtaining an improved classical Burgers model constitutive equation, and calculating a joint rock-soil body material creep model according to the improved classical Burgers model constitutive equation. Calculating an expression of an initial damage variable D0 to obtain a simplified complete sample fitting parameter; deriving a creep model of the fractured rock mass from the creep model of the complete rock; and verifying the model. According to the method, by establishing the relation between the complete rock-soil material and the fractured rock-soil material, the creep model of the rock-soil material containing different fractures is deduced from the complete rock-soil material creep model and is used for describing the creep process of the rock-soil material containing different fractures, and the actual applicability and universality of the creep model are improved.

The invention discloses a rock mass integrity index Kv determination method under a high crustal stress condition, and relates to the technical field of rock mass basic quality evaluation, and the method comprises the following steps: carrying out field crustal stress test to obtain the crustal stress of a rock mass and the elastic longitudinal wave velocity of the rock mass; if the result of the field crustal stress test is judged to be extremely high crustal stress or high crustal stress, determining a rock mass integrity index Kv according to the following method; a high-pressure rock triaxial dynamic test system is used for carrying out a standard cylinder sample wave velocity stress test for recovering the confining pressure of an original ground stress environment, and the elastic longitudinal wave velocity of the standard cylinder sample considering the confining pressure is obtained. The rock mass integrity index Kv is calculated based on the longitudinal wave velocity of the rock mass and the elastic longitudinal wave velocity of the standard cylinder sample, the rock core unloading effect caused by high ground stress is considered, the actual integrity of the rock mass is accurately reflected, and the problem that the Kv value is too high in a traditional method is solved. By more accurately calculating the Kv value, the rock mass quality is more scientifically evaluated, and a more reliable basis is provided for engineering design and construction.

The invention discloses an internal space relation speculation method and system based on a rock mass structural surface. The method comprises the steps that based on rock mass structural plane recognition results of a ground plane, a joint plane and a fault plane, correlation of rock mass structural plane surface features and internal space relations of the rock mass structural plane surface features is constructed, and surface constraint conditions of the ground plane, the joint plane and the fault plane are determined; based on key control point setting, thickness constraint and geometric calculation of the triangulated irregular network, realizing thickness-invariant extension of the rock mass structural surface; based on thickness constraint, triangularization curved surface mesh deformation is achieved, and then thickness change extension between different depth layers is achieved; and the triangular irregular net is cut based on the intersecting lines of the intersecting rock mass structural surfaces, and stratum pinching is achieved. According to the method, occurrence information such as the inclination angle of the rock mass internal structure and the internal space relation of the rock mass structural plane are obtained by extending the surface of the structural plane, and then a rock mass internal space relation speculation result serves as an internal constraint to provide data support for subsequent three-dimensional modeling.

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 present invention relates to a quantitative evaluation method for the rockburst proneness of surrounding rock considering the excavation disturbance effect. The basic quality grade, geological strength index, and uniaxial compressive strength of intact rock of the surrounding rock are directly obtained according to the engineering geological exploration data; preliminarily judge whether the surrounding rock has the proneness to rockburst; judge the on-site acoustic wave test conditions of the surrounding rock. If the conditions are not met, the damage factor characterizing the damage degree of the surrounding rock is determined according to the Hoek-Brown strength criterion in combination with the damage situation of the surrounding rock after excavation on-site; if the conditions are met, the acoustic wave velocities at different depths on the surface of the surrounding rock are obtained, and the ranges of the damaged area and the original rock area are determined; the deformation modulus of the rock mass in the original rock area is determined; the rockburst proneness of the rock mass in the original rock area and the damaged area is evaluated; the present invention aims to solve the problem of the cumbersome evaluation process for the rockburst proneness of surrounding rock with different degrees of damage caused by the excavation disturbance effect, so as to realize the rapid evaluation of the rockburst proneness of the surrounding rock.

The invention discloses a method for preparing rock samples with different crushing degrees through quantitative static load and three-dimensional scanning, which comprises the following steps: screening the rock samples according to pore fractures of the rock samples, the density of the rock samples and the ultrasonic wave velocity of the rock samples to obtain samples to be prepared; randomly selecting a group of rock samples from the to-be-prepared samples, and carrying out uniaxial compression test to obtain a rock sample total stress-strain curve; setting a strain value of the crushing degree of the rock sample under a static load condition according to the rock sample total stress-strain curve; and based on the strain values, crushing the residual rock samples by adopting a static load quantitative strain method, and screening the porosity of the rock samples to obtain the rock samples with different crushing degrees. According to the method, the rock samples with different crushing degrees can be prepared through the methods of three-dimensional pore crack scanning, rock ultrasonic testing, laboratory testing, qualitative and quantitative analysis and the like, and a premise is provided for research on analyzing the re-bearing mechanical characteristics of rock masses with different crushing degrees or stress paths.

The invention discloses a mine water sealing layer stability evaluation method based on micro-seismic monitoring, and belongs to the field of mine water sealing layers. The invention discloses a mine water sealing layer stability evaluation method based on micro-seismic monitoring. The method comprises the following steps: S1, identifying a mine water sealing layer area; s2, monitoring the mine water storage area in real time; s3, determining the spatial distribution density and the energy accumulation trend of the micro-seismic events; s4, analyzing the micro-seismic event clustering characteristic and the evolution law of water seal reservoir rock mass fracture; and S5, obtaining a stability evaluation result of the mine water sealing layer. The problem that cross-regional environmental disasters such as water inrush or surface collapse are easily caused in the prior art is solved, the accuracy and reliability of data are ensured, geological analysis and prediction can be more deeply carried out, damage to the environment and cost input are reduced, the activation rule of a hidden structure and the fracture depth of a bottom plate are effectively monitored, and the monitoring accuracy and reliability of the hidden structure are improved. Therefore, the water inrush risk can be predicted and forecasted.

The invention relates to the technical field of mineral resource prospecting exploration, in particular to a prospecting prediction method based on a compound rock mass anatomy porphyry-skarn composite mineralization system. The control factors and formation mechanism of the ore deposit are clarified, and the deep earth dynamics process of porphyry mineralization development is disclosed. Through typical ore deposit fine dissection, the space-time structure characteristics of mineralization in different structural evolution stages are discussed; according to the method, mineral in-situ micro-area surface scanning and sulfide isotope in-situ tracing technologies are utilized to determine occurrence forms of metallogenic elements, restrain activation migration behaviors of microelements, find out sources of metallogenic metal substances, reveal a superposition metallogenic development mechanism and provide theoretical basis and technical support for prospecting exploration.

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 provides a blasting simulation method and device for crystal intruding rock, and the method comprises the steps: building an initial rock crystal sample uniaxial compression model according to the mesoscopic physical parameters of target crystal intruding rock; generating a cohesive force unit for a contact interface between crystal grains in the uniaxial compression model to obtain a uniaxial compression model of the target rock crystal sample; performing a uniaxial compression simulation test on the uniaxial compression model of the target rock crystal sample to obtain test simulation data, correcting parameters through a back analysis method to obtain target material parameters of a target crystal, and constructing a rock crystal medium blasting construction FDEM model; and according to the rock crystal medium blasting construction FDEM model and the blasting parameters, blasting simulation is carried out on the target crystal intruding rock. Therefore, according to the scheme, by designing the finite-discrete coupling blasting simulation method, the cost can be reduced, the time consumption can be reduced, and the dynamic response rule and the damage mechanism of the rock mass in the blasting process can be quantitatively represented.

The invention relates to the technical field of ore lumpiness analysis, in particular to an ore blasting lumpiness analysis and prediction method. Determining the friction angle and cohesion influenced by the humidification effect and the freeze-thaw effect in the weather state; determining a friction angle correction parameter and a cohesion correction parameter in the Drucker-Prager model according to the friction angle and the cohesion, substituting the parameters into a yield function, judging whether the rock mass yields or not, and determining whether the current rock mass is fractured or separated or not; establishing a dynamic equation through a finite element method to determine the dynamic response of the rock mass under blasting load and environment loading; and judging whether the rock mass is damaged and cracks are generated or not in a stress state based on a crack propagation criterion, and predicting the blasting lumpiness according to the cracks of the rock mass. On the basis of a Drucker-Prager model, a rock mass strength parameter is corrected by introducing a humidification effect and a freeze-thaw effect, a blasting kinetic equation is established in combination with a finite element method, a dynamic response and a fracture extension mode of a rock mass under blasting load and environment loading are predicted, and the current mine blasting fragmentation prediction precision is improved.

The invention provides a complex fractured rock mass grouting geologic model modeling method which comprises the steps that grouting related information is obtained, a grouting geologic model is built based on the grouting related information, and the grouting geologic model comprises a grouting geologic structure model, a grouting environment parameter model and a grouting engineering characteristic model. According to the method, various grouting related information is expressed as a grouting characteristic model through a large-area extrapolation modeling method, a rock mass parameter determination-random modeling method and a discrete fracture network modeling method; comprise a grouting geologic structure model (a rock mass model, a fracture model and a karst cave model), a grouting environment parameter model (a rock mass strength model and a rock mass permeability rate model) and a grouting engineering characteristic model (a slurry material partition model and a grouting pressure model), and verification is carried out based on project field examples of the Zhuang hydro-junction. It is proved that under the condition that the geological condition and the actual grouting construction method are fully considered, the accuracy of the analysis result of the grouting geological model is high.

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 discloses a method for evaluating the damage degree of a rock mass sample. The method comprises the following steps: acquiring the rock mass sample and recording joint characteristics; performing multi-layer block area division on the rock mass sample, and performing a uniaxial compression test and an acoustic emission test to obtain a stress-strain curve and an accumulated ringing curve of the rock mass sample; according to the characteristic parameters of the ringing signal, calculating the spatial distance between the positions of the crack high-incidence areas of the two adjacent layers, and calculating the three-dimensional energy distribution vector of the rock mass sample; establishing a support vector regression SVR model, and forming a rock mass sample stress state prediction function; and predicting the stress state of the rock mass sample in the loaded state, and evaluating the damage degree of the rock mass sample. According to the method, the support vector regression SVR model is introduced, the prediction relation function between the rock mass related parameters and the stress-strain curve development stages is formed, the dynamic response of the related parameters of the rock mass sample in the development process of each stage is considered, the damage degree of the rock mass sample is comprehensively evaluated, and the evaluation result is accurate and reliable.

The invention discloses a construction method of a water-containing rock damage statistical constitutive model considering compaction deformation, which comprises the following steps: carrying out a uniaxial compression test on a rock sample to obtain an axial stress-axial strain curve and a demarcation point in a compaction stage and a linear elasticity stage in the axial stress-axial strain curve; a sigmoid function is introduced, and the constitutive relation of the water-containing rock in the microfracture compaction stage is constructed; acquiring a damage variable after coupling of rainfall damage and stress damage caused by rock moisture infiltration; based on a damage statistical theory, constructing a constitutive relationship between a linear elasticity stage and a damage softening stage after a microfracture compaction stage of the water-containing rock; and constructing a damage statistical constitutive model of the water-containing rock considering compaction deformation. The constitutive curve corresponding to the constitutive model well reflects the compaction characteristic, the elastic characteristic, the damage softening characteristic and other deformation characteristics of the rock mass, and high prediction precision and practical application value are shown.

The invention provides an abrupt slope glutenite mass scale prediction method and system, and the method comprises the steps: S1, building an isochronous stratigraphic framework based on well drilling and seismic data, and recognizing a basin edge fault and a base; s2, inshore subsea fan gravel rock mass depicting based on a sedimentary facies belt; s3, constructing a relationship between occurrence parameters of the basin edge fault and the basement and geometric morphology parameters of the glutenite body; and S4, constructing a near-shore underwater fan glutenite mass scale prediction mathematical model based on the basin edge fault and the basement occurrence. And establishing a corresponding mathematical model to realize fine prediction of the near-shore underwater fan gravel rock mass scale.

The invention discloses a void ratio testing method and device for simulating fractured rock mass in a goaf, and belongs to the technical field of void ratio determination. A charging bucket is used for charging and simulating the environmental change of the goaf; a top cover is installed at the upper end of the charging barrel, and a pressure guiding barrel is installed on the upper wall of the top cover and plays a role in transmitting pressure. The void ratio of the caving fractured rock mass in the goaf is tested in a laboratory, and meanwhile, a fractal dimension method is introduced in an experiment, so that the accuracy and scientificity of the method are ensured; by means of the equipment, the porosity value of the goaf caving rock mass when the goaf caving rock mass is just broken and collapsed can be obtained, and the porosity value of the goaf caving rock mass after the goaf caving rock mass is compacted by axial stress provided by an overlying rock layer can be detected; the compaction process after goaf collapse can be simulated; water is fed or discharged in the experiment process, and the water immersion and compaction process of the goaf can be simulated; after the experiment is finished, fractured rock masses can be conveniently taken out, and the characteristics are observed.

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 discloses a hot dry rock resource target region assessment method based on multi-parameter fusion, and the method comprises the steps: dividing resource target region assessment parameters into five index layers: geophysical characteristics, surface geothermal characteristics, geothermal geological conditions, rock mass economy and geological safety; the indexes are further divided into 20 indexes such as gravity and magnetic force abnormity, inhabitation burial depth, earth heat flow value, 5km earth temperature, unit area resource quantity, earthquake area / earthquake activity, residential area / scale and the like. Weights are distributed to the indexes according to importance, the indexes are divided into five grades from a suitable grade to an unsuitable grade, the hot dry rock resource target areas are graded and sorted accordingly, and the optimal target area is optimized. According to the method, hot dry rock resource target region evaluation parameters and grades are subdivided, and target region evaluation conditions are clearer and finer; progressive elimination is adopted, and the evaluation method is reasonable; economic and safety evaluation is increased, and the problems that in the prior art, evaluation parameters of the hot dry rock resource target area are incomplete, and economical efficiency and safety are not considered are effectively solved.