88 results about "Percolation" patented technology

The invention relates to the technical field of flood purification treatment, and discloses a flood percolation and purification system based on artificial intelligence. A flood data acquisition unit of the system acquires physical characteristics and chemical components of flood in real time, extracts multi-dimensional water quality indexes, identifies pollution concentration abnormal areas through a neural network, and generates an infiltration medium pollution load distribution diagram; a percolation layer state analysis unit calls high-load area data, recognizes percolation layer blockage and saturation segments in combination with historical percolation efficiency, and generates a percolation efficiency attenuation interval; the purification medium regulation and control unit extracts the purification efficiency and the regeneration state according to the attenuation interval, judges the medium failure condition and generates a purification medium dynamic adjustment strategy; and the purification process execution unit calls the regulation and control parameters, detects the pressure change and the pollutant interception amount, identifies the interlayer synergistic effect strength, and generates a purification medium backwashing instruction to control the start and stop of a purification layer high-pressure backwashing pump after reaching the standard.

The invention relates to the technical field of geotechnical engineering disaster monitoring and early warning, and discloses a stratum rainfall seepage deformation coupling numerical simulation method and system and a storage medium, and the method comprises the steps: building a three-dimensional geologic model reflecting soft and hard rock interbed characteristics; converting the on-site rainfall data into hydraulic boundary conditions in real time; calculating a rock mass shear expansion volume change rate, determining a chemical damage acceleration factor, and updating a total damage variable; reconstructing a permeation tensor representing the dominant flow channel according to the space gradient of the damage variable; solving a fluid-solid coupling equation based on the permeability tensor, obtaining pore water pressure and calculating a displacement field; building a likelihood function by using field monitoring data to perform inversion correction on model parameters; and evaluating the stability based on the corrected calculation result and outputting an early warning signal. By constructing a mechanical coupling mechanism and a dominant flow channel model, precise simulation of a landslide evolution process in a complex geological environment is realized.

The invention provides a dynamic heat-water-force coupling test device and test method, and relates to the technical field of rock performance test.The device comprises a sample chamber for containing a rock sample; the heat loading assembly, the pore water pressure loading assembly and the force loading assembly are integrally arranged; the heat loading assembly comprises a heating element and a cooling element so as to simulate an environment in a wide temperature range or under a freezing and thawing cycle condition; the pore water pressure loading assembly is communicated with the rock sample to establish pore water seepage loading; an axial pressure loading element of the force loading assembly applies dynamic axial pressure to the rock sample, and a confining pressure loading element of the force loading assembly applies dynamic confining pressure to the rock sample; the sealing sleeve wraps the rock sample so as to isolate the confining pressure medium from the liquid medium. According to the device provided by the invention, three dynamic loads including the dynamic temperature, the dynamic pore water pressure and the dynamic mechanical stress can be synchronously applied and accurately controlled in a single device, so that a rock sample is subjected to a mechanical test in a vivid dynamic multi-field coupling environment.

The invention provides a carbon dioxide multi-layer integration injection dynamic regulation and control method and device, and relates to the field of carbon dioxide geological sequestration, and the method comprises the steps: determining the optimal layer number and layer spacing distance of multi-layer integration injection based on obtained geological parameters, and obtaining a plurality of injection layers; according to the geological parameters and the length of the gas injection well, an interlayer allowable pressure difference is calculated in combination with a seepage mechanical formula, and spatial distribution parameters of all injection layers are determined; determining an inlet angle of an injection port corresponding to each injection layer; analyzing the porosity change rate between the injection layers and the coupling influence coefficient of the stress field change; and dynamically adjusting the opening degree of the injection port of each layer by adopting a model predictive control algorithm, and determining a delayed injection strategy according to a configured formation permeability grading standard. According to the method, the injection flow uniformity and the sealing efficiency can be improved, the interlayer fluid channeling risk is reduced, and accurate dynamic regulation and control of multi-layer unified injection are achieved.

The utility model belongs to the technical field of material extraction, and discloses percolation extraction equipment. The percolation extraction equipment comprises at least two percolation columns, a first pipe group, a second pipe group and a third pipe group, wherein each percolation column is provided with a bottom inlet, a bottom outlet, a top outlet and a top inlet; the bottom inlet is used for circulating a solvent or an extracting solution, the top inlet is used for circulating the solvent, and the bottom outlet and the top outlet are used for circulating the extracting solution; the first pipe group comprises a plurality of first connecting pipes for connecting the at least two percolation columns in series, and two ends of each first connecting pipe are respectively communicated with the top outlet and the bottom inlet; the second pipe group comprises a plurality of second input pipes which are connected in parallel, and the second input pipes and the percolation columns are communicated with the bottom inlet in a one-to-one correspondence manner; the third pipe group comprises a plurality of third input pipes which are connected in parallel; the third input pipes and the percolation columns are communicated with the top inlet in a one-to-one correspondence manner. The percolation extraction equipment can realize various extraction processes, is suitable for different types of materials, reduces the cost input, and has relatively high process flexibility.

The invention belongs to the technical field of constructional engineering, and particularly relates to a basement bottom plate partitioned water filtering channel performance evaluation method. The method comprises the following steps: firstly, based on geological conditions of a target project and basement structure parameters, establishing a three-dimensional seepage geometric model comprising a basement bottom plate and a surrounding soil layer; then, corresponding hydraulic parameters are given to all soil layer materials and water filtering channel materials in the model; then, setting at least two calculation working conditions and carrying out steady-state seepage calculation under different underground water level conditions; and finally, comparing and analyzing the evaluation indexes of different working conditions, evaluating the performance advantages of the partitioned water filtering channel compared with a traditional drainage mode, and carrying out parameter sensitivity analysis and parameter selection. According to the method, the drainage performance of the basement bottom plate can be remarkably improved, the maximum pore water pressure below the bottom plate is reduced, the average seepage speed is increased, the drainage efficiency is improved, and scientific basis and technical support are provided for waterproof drainage design of the basement.

The application discloses a shale oil reservoir core micro-percolation model and a preparation method and application thereof, and belongs to the technical field of oilfield development experiment researches.The core micro-percolation model comprises a rock sample and adhesive glass sheets used on two surfaces of the rock sample, and according to the oil-water flow direction in the rock sample, the side surface of the rock sample is set as an inflow end, an outflow end, a first end and a second end respectively, one or two needle heads are arranged close to the inflow end, one needle head is arranged close to the outflow end, and the core micro-percolation model is packaged through glue.The single-needle head and double-needle head micro-percolation models are prepared for different types of shale oil reservoir cores, and oil-water two-phase percolation experiments are carried out on typical rock samples; through the experiments, more accurate understanding of the percolation channels of oil and water in the shale reservoir core is obtained, the distribution states of residual oil and bound water in the core are accurately characterized in a visualized mode, and important references can be provided for the research on percolation curves, the understanding of percolation rules and the compilation of development schemes.

The application discloses a method and equipment for predicting production decline of a tight gas horizontal well with a variable decreasing exponent, and a storage medium, and comprises the following steps: collecting historical gas production data of a target well; performing nonlinear regression analysis by taking a dimensionless time function as an independent variable and taking a logarithmic value of the production as a dependent variable, and determining a second key undetermined parameter and a linear expression by a characteristic curve fitting method; substituting the parameter and a theoretical initial production into a formula to obtain a time-varying prediction model of the gas well production; comparing and analyzing measured data in the field to obtain an absolute error value; if the absolute error value is greater than an absolute error threshold value, the next step is performed; repeating the steps based on historical gas production data of a measure section to obtain a time-varying prediction model of the gas well production of the measure section. The application can more accurately represent an actual percolation law of the tight gas reservoir, and the theoretical calculation result is more in line with a dynamic material balance principle of the gas reservoir, thereby providing a new theoretical basis and technical means for optimizing a development scheme of the tight gas horizontal well.

The application discloses a kind of rock gas relative permeability measurement method based on lattice Boltzmann method, comprising the following steps: (1) determining the porosity corresponding to each water saturation grade of rock, using four-parameter growth method to generate the rock porous medium model consistent with the porosity of each water saturation grade rock;(2) using lattice Boltzmann method to carry out gas seepage simulation, the bias pressure of gas boundary is applied to the rock porous medium model, the gas permeability and relative permeability of rock porous medium model under different porosity are calculated;(3) draw the curve of rock gas relative permeability and different water saturation, determine the relative permeability of rock under different water saturation.The application carries out gas seepage simulation by rock porous medium model and lattice Boltzmann method, obtains the permeability of rock porous medium model under different water saturation, and then calculates the relative permeability, constructs the functional relationship between rock sample water saturation and relative permeability, to determine the rock gas relative permeability simply and effectively.

The application discloses a kind of high-pressure conditions under multiple medium digital core gas-water two-phase percolation simulation method, and the gray scale image of fracture-pore type piston rock sample is obtained by CT scanning, the fracture-pore network model of the rock sample is constructed, then the experimental results of gas-water relative permeability under normal temperature and pressure are used to correct the model, carry out permeability stress sensitivity experiment under high temperature and high pressure, obtain the relationship curve of permeability with confining pressure, the fracture opening in the corrected fracture-pore network model is used to simulate the fracture closure under high temperature and high pressure, and the experimental results of permeability under high temperature and high pressure are used to correct, obtain the relationship of fracture opening with confining pressure, further predict the gas-water two-phase relative permeability curve under different pressures, provide theoretical support for efficient development of high-pressure gas reservoir.

The invention relates to the technical field of shield tunnel construction, in particular to an underground structure compaction grouting permeation filtration diffusion time-varying analysis system and method.The method comprises the following steps that a grouting pressure and grouting time relation calculation model is built, and construction parameters are obtained; inputting the obtained construction parameters into a constructed grouting pressure and grouting time relation calculation model; the situation that the grouting pressure changes along with the grouting time and considering the deep percolation effect and the slurry viscosity time-varying characteristic at the same time, the situation that the grouting pressure changes along with the grouting time and considering the deep percolation effect independently and the situation that the grouting pressure changes along with the grouting time and considering the viscosity time-varying characteristic independently are obtained through calculation and output. According to the method, the pore blocking effect caused by particle deposition of the slurry in the soil body and the dynamic change of the slurry viscosity along with time are coupled, and the influence of the deep percolation effect and the time-varying property of the slurry viscosity on the permeation and diffusion of the slurry is considered at the same time.

The invention relates to a method for calculating porous medium two-phase flow energy dissipation based on a particle velocity measurement method, and belongs to the technical field of porous medium seepage mechanics experiments. The invention discloses a method for calculating porous medium two-phase flow energy dissipation based on a particle velocity measurement method. The method comprises the following steps: preparing a transparent pore medium microscopic model with a specific microscopic pore structure; carrying out a visual multiphase flow experiment on the pore medium microscopic model; determining external input work based on the inlet and outlet pressure data; accurate calibration of space and phase state is carried out on the original image, and interface energy is obtained through calculation; determining a velocity vector of a non-wetting phase in an experiment based on a particle velocity measurement method, and calculating to obtain kinetic energy; and determining the ratio of energy dissipation to total energy in the multiphase flow system based on external input work, interface energy and kinetic energy. According to the method, the conversion from a visual flow image to a quantitative energy component can be realized, and the viscous dissipation and the interface energy in the displacement process are accurately calculated, so that an energy dissipation mechanism is disclosed, and a key data support is provided for engineering optimization and numerical simulation.

The application discloses a method and device for determining percolation characteristics of a reservoir, and belongs to the technical field of oil and gas reservoir exploration and development. The application divides different reservoir space matching types by the structural characteristics and distribution characteristics of the reservoir space in a core, constructs a corresponding reservoir conceptual model for each reservoir space matching type, establishes a corresponding percolation model for different types of reservoir spaces in the reservoir conceptual model, and obtains the pressure response of the outlet end of different reservoir conceptual models in the process of solving the percolation model, so as to draw a well test characteristic curve, and determine the corresponding relationship between different reservoir space matching types and percolation characteristics according to the well test characteristic curves of different reservoir conceptual models, thereby providing support for the identification and evaluation of multiple medium reservoirs.

The invention provides a water well water injection state evaluation method, which comprises the following steps of: 1, closing a water well in normal water injection, recording wellhead pressure, and drawing a water injection pressure drop curve according to the wellhead pressure change condition of the well; and 2, calculating the FD value of the well according to the water injection pressure drop curve of the well. And 3, measuring and calculating interval values of the FD values under different water injection masses by utilizing a seepage mechanics theoretical formula. And step 4, comparing the calculated FD value with the interval range of the FD value under different water injection qualities so as to evaluate the water injection quality. The water well water injection state evaluation method can accurately evaluate the water injection quality of the water injection well and determine the interval with low-efficiency and ineffective water injection, so that targeted adjustment measures are taken, and the water injection quality and benefits are improved.

The invention discloses a natural gas well productivity prediction and well test analysis method and system, and belongs to the technical field of natural gas related basic theory research. The method is based on related theories of mathematical physical equations and combines seepage characteristics of real gas in a porous medium in a natural gas well; according to the method, a natural gas nonlinear unstable seepage partial differential equation is established, a dimensionless transformation function of pressure, time and position defined based on a differential quotient is introduced, an analytical solution of the nonlinear seepage equation considering the turbulence effect is obtained, the productivity of a natural gas well is predicted, well testing data is analyzed, and well testing model calculation shows that the yield of the natural gas well is greatly improved. After the inertia-turbulence effect is considered, the bottom hole pressure is lower; the calculation of a fixed bottom hole flowing pressure model shows that the gas well yield is reduced after the inertia-turbulence effect is considered; compared with an existing method, the result has the advantages that errors are reduced, the precision is higher, and a certain theoretical basis can be provided for further researching the problem of unstable seepage of the complex heterogeneous oil and gas reservoir.

The invention belongs to the field of preparation of hard rock transparent similar materials, and particularly relates to a hard rock transparent similar material with specific porosity and a preparation method. The method comprises the following steps: calculating the mass of each component according to the volume and porosity of the required hard rock transparent similar material and the density of the components; pretreating solid particles; cleaning fused quartz sand, preparing a cementing agent, mixing, performing injection molding and curing, and removing a pore-forming agent to obtain the hard rock transparent similar material with specific porosity. The obtained hard rock transparent similar material overcomes the defect that a material prepared in the prior art does not have permeability, and reliable experimental support is provided for revealing a rock mass permeability mechanism and optimizing an engineering seepage control strategy. Meanwhile, the preparation method is easy and convenient to operate, materials are easy to obtain, the preparation period is shortened, and the research efficiency is improved.

The application discloses a method and device for determining CO2 breakthrough pressure of mudstone cap rock, equipment and medium. The method comprises the following steps: scanning and reconstructing the mudstone sample according to the peak pore diameter of the macropore and / or micropore of the clay in the mudstone sample, determining the main control seepage channel of the mudstone sample and the reconstructed pore structure corresponding to the main control seepage channel; extracting the three-dimensional pore network and the basic geometric information of the pore throat according to the reconstructed pore structure for the macropore or micropore determined as the main control seepage channel; and determining the CO2 breakthrough pressure of the mudstone cap rock by two-phase quasi-static displacement simulation according to the three-dimensional pore network and the basic geometric information of the pore throat. The technical scheme can quickly and effectively determine the CO2 breakthrough pressure of the mudstone cap rock.

The invention provides a horizontal well collapse pressure determination method and device, equipment and a storage medium, and the method comprises the steps: for each well section of a target horizontal well, determining horizontal principal stress corresponding to the well section based on the rock mechanics parameters of the well section and a preset horizontal principal stress formula, and determining the collapse pressure of the target horizontal well based on the horizontal principal stress corresponding to the well section; the method comprises the following steps: accumulating the liquid column pressure from 0 according to the cohesive force, the internal friction angle, the formation pore pressure and the effective stress coefficient which are obtained in advance, carrying out iterative processing on a capacity function until the value of the capacity function is equal to 0, and further determining the liquid column pressure corresponding to the capacity function being 0 as the collapse pressure corresponding to a well section. According to the method, the geostress model based on the micro-structure is used as a support, the influence of factors such as liquid column pressure and borehole wall percolation zone pore pressure change is considered at the same time, the collapse pressure is determined accurately and reliably, and technical support can be provided for borehole wall stability of the deep coal horizontal well, optimal design of drilling fluid density, reduction of underground complex accidents and improvement of drilling speed and efficiency.

The application discloses a kind of rock reservoir profiling imitated lubricated geological fissure visual model preparation methods, it is related to deep unconventional oil and gas exploration and development and rock reservoir percolation experimental technical field, obtains the three-dimensional topography of rock primary fissure using low-temperature imaging characterization technology, constructs geometric template after image processing;Micro-processing technology is used to prepare microfluidic model in high-fidelity replication rock primary fissure structure on transparent substrate in batches;According to the test results of target reservoir rock in-situ wettability, the inner wall of model microchannel is quantitatively modified, so that its surface wettability is accurately matched with reservoir rock, and finally the profiling imitated lubricated integrated fissure visual model is obtained, the present application realizes the super-high-fidelity replication of rock primary fissure structure and the accurate regulation and control of reservoir in-situ wettability for the first time, and provides a reliable and controllable physical experimental carrier for the study of deep rock reservoir gas-liquid two-phase percolation mechanism.

The application discloses a kind of based on fluid mechanics VOF method's fractured well single well trace production interpretation method and system, the method includes the following steps: S1: using trace monitoring wellbore-matrix-fracture intelligent modeling method establishes fractured well single well reservoir model;S2: based on fluid mechanics, establish oil-gas-water three-phase percolation and tracer migration mathematical model;S3: on the fractured well single well reservoir model, the oil-gas-water three-phase percolation and tracer migration mathematical model are solved, obtain simulation production dynamic data;S4: the simulation production dynamic data are compared with tracer measured data: if both are not consistent, then adjust the fracture parameter of the fractured well single well reservoir model, repeat steps S1-S4;If both are consistent, then through the oil-gas-water three-phase percolation and tracer migration mathematical model output simulation result.The application can more accurately carry out fractured well single well trace production interpretation.

The invention relates to the technical field of exploration and development of unconventional oil and gas reservoirs, in particular to a method and device for determining the thickness of a hydration film of a shale reservoir. The method comprises the following steps: acquiring a core sample of a target shale, and determining an initial dissociation temperature T1 and a complete dissociation temperature T2 of a hydration membrane in the core sample through molecular dynamics simulation; based on the dissociation temperatures T1 and T2, determining the mass m of a hydration membrane in the rock core sample through a temperature-controlled drying experiment; determining the specific surface area SBET of the rock core sample by using a gas adsorption experiment; and determining the average hydration film thickness h of the shale reservoir according to the mass m of the hydration film and the specific surface area SBET of the rock core sample. According to the method, microscopic simulation and macroscopic experiments are combined, quantitative and accurate evaluation of the overall average hydration film thickness of the shale reservoir is achieved, and key parameters are provided for seepage mechanism research and development scheme formulation of unconventional oil and gas reservoirs.

The invention provides a double karst water-containing medium physical model construction method and device, and relates to the technical field of karst geology, and the method comprises the steps: obtaining a real rock core structure; performing three-dimensional scanning on the real rock core structure, inputting a three-dimensional scanning image into a preset three-dimensional image analysis model for three-dimensional reconstruction, extracting a network, and constructing a pore network model; extracting pore structure features based on the pore network model, and constructing a pore network three-dimensional model by inputting the pore network model into a preset multi-physics field coupling model for seepage simulation; according to pore size distribution and permeability difference in the pore network three-dimensional model, determining a space division boundary of the porous matrix block and the karst pipeline to obtain a porous medium structure; and performing integrated forming treatment and physical verification on the porous medium structure to obtain the double karst water-containing medium physical model. According to the method, the problem that a physical model cannot truly reflect capability and engineering applicability is solved.

The application discloses a grouting method for a karst stratum water-resisting curtain, and comprises the following steps: obtaining geological data of a target stratum whole region; classifying the stratum based on a hydraulic characteristic grading standard and a morphological characteristic classification standard; constructing a three-dimensional hydrogeological model and simulating a seepage field; and designing a water-resisting curtain according to a simulation result, including dividing a first water-conducting level region and a second water-conducting level region; and constructing the water-resisting curtain according to a design result, including adopting a zoned and sequenced grouting process, and simultaneously performing targeted plugging on the first water-conducting level region. The application guides the grouting process of different types of strata through two-dimensional classification of water power and morphology, and improves the construction pertinence and plugging reliability of the water-resisting curtain in the karst area by combining overall zoned and sequenced design and local targeted plugging.

The invention discloses a subsurface erosion simulation numerical method based on a semi-implicit two-phase substance point method, and relates to the technical field of geotechnical engineering numerical simulation, and the method comprises the following steps: generalizing unsaturated easily subsurface-eroded accumulated soil into a two-phase multi-component medium based on a mixture theory; establishing a solid-liquid double-phase double-layer grid system; establishing a core control equation of seepage subsurface erosion in the soil body; transferring the material point information of the solid phase and the liquid phase to corresponding background grid nodes in the double-layer grid system; applying a boundary condition on a background grid of the double-layer grid system, and carrying out semi-implicit solution on the core control equation; mapping the obtained node speed to a substance point; judging whether the relative velocity of the solid phase and the liquid phase exceeds a seepage velocity threshold value or not; state variable information carried by the two-phase substance points is updated; correcting permeability and saturation; and judging and calculating whether the specified time is up or whether the soil body reaches the yield limit. The method provided by the invention has important theoretical and engineering practical values for solving the difficulty in simulating the subsurface erosion disaster of the accumulated soil.

The invention provides a multilayer commingled recovery gas well layering yield contribution rate evaluation method and device and a storage medium, and the method comprises the steps: determining the layering yield contribution rate of each reservoir section of a single well, and / or determining the layering yield contribution rate of each reservoir section of an adjacent well in the same block; wherein the step of determining the layered yield contribution rate of each reservoir section of the single well comprises the substeps of determining seepage characteristic parameters of each reservoir section of the single well to be evaluated; determining the layered yield contribution rate by using the seepage characteristic parameters of each reservoir section of the to-be-evaluated single well; the step of determining the layered yield contribution rate of each reservoir section of the adjacent wells in the same block comprises the steps that a relation model of seepage characteristic parameters of each reservoir section of a to-be-evaluated single well and layered gas production is established, and the correlation coefficient is larger than 0.9; and determining the layered gas production rate of the adjacent well through the relation model, and determining the layered yield contribution rate of the adjacent well through the seepage characteristic parameters of the adjacent well. According to the evaluation method for the contribution rate of the layered yield of the multi-layer commingled recovery gas well, the labor cost is effectively reduced, and convenience and rapidness are achieved.

The application discloses a design method of a macroscopic anisotropy structure based on a porous gas bearing, solves the problems of inaccurate performance prediction, non-systematic optimization design and the fact that the existing production conditions cannot realize micro anisotropy due to the isotropic assumption of the material of the porous gas bearing, and comprises the following steps: micro characteristic foundation and parameterization characterization: a prediction model of anisotropic permeability tensor is established; radial / circumferential low segmentation design: a partition design is adopted, and high permeability material is arranged in a bearing area; axial sandwich gradient design: a sandwich functional gradient design is adopted, and the thickness of high permeability material at both ends of the bearing is smaller than the thickness of low permeability material in the middle; system level performance simulation verification: macroscopic control equations coupled with porous medium seepage and gas film lubrication are solved, the bearing capacity, stiffness and gas film stability of the macroscopic anisotropic bearing are accurately predicted; performance comparison and optimization: performance comparison and verification are carried out with the performance of a traditional isotropic design.

The application discloses a kind of fissure rock mass high-pressure percolation disaster process in-situ testing device, it is related to rock mass physical property detection technical field, the present application is by rubber capsule and first rubber pad, second rubber pad is respectively installed in the four around and upper and lower sides of sample cavity, can be independently applied high-precision hydraulic pressure in the four around and upper and lower surface of rock sample, it is favorable to accurately restore the mechanical boundary condition in the whole process of water-resisting, percolation, stable percolation, even water force splitting mutation, by the electrode of multiple uniform distribution is arranged in the four around of sample cavity, with the aid of electrical response characterization, the whole process from microcrack initiation to macroscopic percolation disaster can be realized, visual in-situ observation and data capture, under the cooperation of two phases, effectively build the test environment that can truly simulate the percolation disaster under the condition of high confining pressure stress of deep rock mass, improve the detection authenticity and accuracy to a certain extent.

The application discloses a kind of rock triaxial loading destruction process double medium hydraulic coupling simulation method, first to establish the finite discrete element-grain boundary model considering mineral component to rock entity sample;Randomly select the joint unit of preset proportion to model, simulate the internal natural microcrack defect of rock by random weakening joint unit mechanical parameter;Based on the triaxial stress-seepage coupling test in laboratory establishes corresponding numerical test model;With the result obtained by test, the seepage calculation mesoscopic parameter is calibrated;Finally, the calibrated model is used to carry out double medium hydraulic coupling simulation under different confining pressures.Compared with the prior art, the application can consider the seepage characteristics of pore matrix and fracture network double medium and the fluid exchange mechanism between them, accurately reveal the influence of confining pressure size and weak joint content on the evolution characteristics of permeability. Through comparison with test examples, the advantages of the rock triaxial loading destruction process double medium hydraulic coupling simulation method of the application are verified.