64 results about "Similarity theory" patented technology

The invention belongs to the technical field of tunnel construction geological disaster prevention and control, and discloses a multi-source data fused refined treatment decision-making method for a complex stratum disaster source, which comprises the following steps: collecting and fusing multi-source geological data, and constructing a three-dimensional geological model; generating a disaster source risk dynamic assessment and treatment scheme; based on a fluid-solid coupling similarity theory, verifying the preliminary treatment scheme by adopting a physical model test, and determining an optimal treatment scheme; the optimal treatment scheme is executed, and the treatment process is dynamically regulated and controlled; after treatment, the treatment effect is evaluated through posterior data, and the effect data is fed back to the three-dimensional geologic model and the knowledge base, so that the dynamic updating of the model and the self-learning of the decision-making system are realized. By the adoption of the treatment decision method, the problems that a traditional method depends on experience, information is one-sided, and treatment is extensive are solved, advanced accurate forecasting and refined and personalized treatment of complex stratum disaster sources are achieved, and the safety and efficiency of tunnel construction are remarkably improved.

The invention discloses a seismic signal-based soil-structure co-evolution seismic liquefaction analysis device and method, and the method comprises the steps: obtaining geological and seismic data of a target region, and constructing a geometric ratio, time ratio and acceleration ratio co-scaling system based on a Bockingham Pi similarity theory; a seismic liquefaction multi-field coupling evolution device is constructed to evolve the soil liquefaction process of a target area, a distributed optical fiber sensor array and a micro pore pressure meter group are adopted to form a millimeter-level spatial resolution monitoring network, and a high-speed camera system is matched to synchronously capture pore water pressure, structural strain and a soil shear band expansion process. Total element time sequence correlation analysis of vibration triggering, seepage developing and structural catastrophe is achieved, the influence degree of the total element time sequence correlation analysis on the earthquake is further analyzed, and a direct basis is provided for engineering restoration priority and a reinforcement scheme.

The invention belongs to the technical field of electric power meteorology, and provides a power grid facility-oriented extreme wind speed prediction method and system, and the method comprises the steps: constructing a power grid facility-oriented extreme wind speed prediction conceptual model; the method comprises the following steps: acquiring power grid facility position, height data and numerical weather forecast data, establishing a reference wind speed prediction model at the height of the power grid facility, establishing a prediction model for local topography and landform and turbulence activity contribution, and establishing a prediction model for convection activity contribution of middle and low atmosphere. And substituting the three prediction models into the extreme wind speed prediction conceptual model, and calculating the extreme wind speed. According to the method, a wind speed diagnosis model at a power grid facility height under different atmospheric stability conditions is constructed by adopting a Monin-Obukhov similarity theory. The model considers the influence of atmospheric stability on the vertical wind profile, so that the predicted wind speed is closer to the actual situation, and the prediction precision of the extreme wind speed is remarkably improved.

The invention belongs to the technical field of mineral engineering and information, and discloses a hydraulic transmission type coal mine landslide speed control device and a test method. The method comprises the steps of prototype analysis and similarity coefficient determination; preparing and designing similar materials; material characteristic inspection: detecting physical and mechanical characteristics of the material; calculating test parameters, and calculating an expected speed, an acceleration distance and a parking height by using mathematical and numerical methods according to a similarity theory and a landslide dynamics principle; arranging sensors, adjusting the angle of the material box, carrying out a landslide mass model test, and cleaning and maintaining the material box. The test method provided by the invention has the characteristics of simplicity in operation, low cost and high repeatability, and is convenient for carrying out experimental research on landslide mass speed control under diversified geological conditions. According to the landslide mass speed control device and the test method thereof, the efficiency and safety of landslide prevention and control work can be remarkably improved, and damage of landslide disasters to the human society and the natural environment is reduced.

The invention relates to the technical field of aerospace meteorology, and particularly discloses a domestic numerical weather forecast mode-based evaporation waveguide height determination method, which comprises the following steps of: obtaining meteorological coupling data output by a domestic numerical weather forecast mode CMA-MESO; determining parameters according to the meteorological coupling data and a turbulent flux algorithm COARE; constructing a temperature vertical profile and a specific humidity vertical profile according to the parameters, the Monin-Obchhoff similarity theory and an NPS model; constructing a modified refractive index profile according to the temperature vertical profile and the specific humidity vertical profile; and determining the height of the evaporation waveguide according to the height corresponding to the lowest point of the corrected refractive index profile. The method is suitable for determining the evaporation waveguide height in a domestic business meteorological mode.

The invention discloses a flow-induced vibration velocity effect similarity method based on an equivalent mode, and belongs to the field of aircraft structure dynamic strength optimization. According to the method, the scaling model is established, the flow velocity difference caused by different sound velocities of the scaling model and the full-size model is considered at the same time, a new thickness scaling factor is established in combination with the velocity ratio on the basis of a length scaling factor, and the structural vibration parameters of the full-size model are predicted through the scaling model. The influence caused by flow velocity difference can be made up, the characteristic frequency and the structural response of the full-size model can be accurately predicted through the scaling model, and the flow-induced vibration velocity effect similarity prediction precision based on the equivalent mode is improved. According to the method, a complex structure characteristic frequency is changed into a similar form only containing the combination of a thickness scaling factor and a length scaling factor through an equivalent modal method, and a curved plate flow-induced vibration structure response similar expression is deduced, so that the defects of a current flow-induced vibration similarity theory are overcome; and the prediction reliability of the aircraft structure dynamic response similarity method is improved.

The invention discloses a radial flow type turbine design method, and relates to the field of turbine design. Aiming at the problems of high cost and low efficiency of a traditional single design, efficient design is realized on the basis of a similarity theory by establishing an impeller model stage library and a guide vane profile library. The method comprises the steps that design parameters are input, the rotating speed is preset, after the specific rotating speed is calculated, the closest model stage in a model stage library is matched, the rotating speed is corrected, and the impeller size is determined by modeling or cutting the model stage; giving an initial value of an outlet airflow angle of the guide vane, iteratively analyzing inlet pressure deviation until error requirements are met, and finally outputting correction parameters to complete design of the impeller and the guide vane. According to the method, through model-level automatic matching and parameter iterative optimization, the design efficiency and precision are remarkably improved, the method is suitable for multi-working-condition and multi-medium scenes, rapid and reliable design of the radial flow turbine is achieved, and the method has the advantages of being high in universality and high in engineering practicability.

The invention discloses a soil mechanics theory-based erosion gully microscopic scale model construction method, which comprises the following steps of: firstly, carrying out field exploration on a target erosion gully to obtain geometric and soil mechanics parameters and meteorological data, and determining a scale proportion according to a similarity theory; preparing a similar soil material from quartz sand, clay and the like, and preparing a model substrate from a fiber reinforced composite material; laying materials layer by layer, implanting fibers, setting a vegetation layer simulation environment, setting boundary conditions and a loading and monitoring system; applying a simulated load, comparing model output with a prototype or theoretical result, determining key parameters by sensitivity analysis, and adjusting and optimizing the model. The model constructed by the method is highly similar to the mechanical behavior and erosion process of an actual erosion gully, soil characteristics can be accurately simulated, data are acquired through reliable monitoring, the accuracy is ensured through scientific calibration and optimization, an effective means is provided for erosion gully research, the research cost is reduced, and high universality is achieved.

This invention proposes a method for testing a grouting curtain model system for underground pipeline vibration control, relating to the fields of underground engineering and blasting engineering technology. The method includes: constructing a test model based on similarity theory, including determining a geometric similarity ratio, constructing a model test box with a shock-absorbing boundary, and reserving grouting locations within the test box; selecting model test materials, including selecting fill materials appropriate to the project site, determining buried pipeline specifications, preparing explosive packs for simulated blasting, and preparing grouting curtain materials according to a predetermined ratio; arranging a measurement system and conducting tests, including arranging strain measurement points on the pipeline surface, deploying acceleration sensors and earth pressure sensors in the soil, and using a dynamic signal acquisition system to record measurement data during the simulated blasting process. This invention systematically reveals the vibration reduction mechanism of grouting curtains in controlling blasting vibration in urban underground pipelines, providing a theoretical basis and technical support for urban infrastructure safety.

The present disclosure discloses a four-dimensional assimilation method for wind farm data based on physical constraints and generative AI, belonging to the technical field of numerical weather prediction and wind energy prediction. The method includes: collecting various types of wind-detecting observation data from a wind farm and performing quality control; performing multi-scale preprocessing and uncertainty encoding on raw data of background field; encoding the wind-detecting observation data into conditional features; using the raw data of background field and the conditional features as joint conditional inputs to drive a generative model, and performing a reverse denoising sampling to generate a preliminary 3D analysis field; applying soft constraints and a projection correction based on physical constraints such as MO similarity theory and wake model; and performing multi-sample generation and statistical integration to output a mean and a uncertainty of analysis field and products for key height layers of wind power.

The present invention relates to the technical field of power grid assessment and optimization. Disclosed are a progressive planning-based power grid evaluation method and system based on a combined assessment theory. The method comprises: using a combined weighting method to perform weight correction on an obtained index by; obtaining an assessed value on the basis of a similarity theory-based assessment method; performing standardization processing on the index by means of non‑dimensionalization processing; and performing evaluation on the basis of non-parametric regression. By means of a combined subjective-objective weighting method, the present invention ensures the objectiveness and fairness of assessment results. By means of a deep learning model, in particular an LSTM network and an attention mechanism, the efficiency and accuracy of assessment are improved. The systematic method of the present invention has wide prospects for application. In the present invention, by means of the design of automated optimization of assessment parameters, adaptive adjustment can be performed on the basis of historical data and real-time data, so that assessment results are closer to actual values, thereby improving the practicality of assessment.

The invention relates to a method for developing drive, control, and / or regulation concepts for a vehicle using a vehicle model. In a method with which the development results can be tested under real conditions while simultaneously reducing development costs, a real vehicle model is scaled down to a true-to-scale size compared to the full-size vehicle to be developed. The dynamics of the full-size vehicle are mathematically determined, and the dynamics, rendered dimensionless using a similarity theory, are applied to the true-to-scale real vehicle model. The drive, control, and / or regulation concept is generated based on the dimensionless dynamics and tested on the scaled-down vehicle model. After a successful test, the concept is transferred to the full-size vehicle without adjustment.

The application belongs to the technical field of stress field equipment for tunnel physical simulation test, and specifically discloses a complex stress field tunnel model test loading device and a test method. The device comprises a loading assembly arranged on the surface of a supporting plate, the loading assembly is attached to the surface of a tunnel physical model to be loaded, and the non-uniform stress field of the surface of the tunnel physical model to be tested is realized by adjusting the loading assembly under the action of external load. The loading assembly comprises a loading frame, a compression column and a unit ram. The surface of the loading frame is provided with mounting holes, the compression column is arranged in the mounting holes, and the end of the compression column close to the tunnel physical model to be tested is connected with the unit ram. The compression column is composed of micro-unit bodies with different elastic modulus ratios. The three-dimensional stress field required by the physical model test is obtained according to the real stress field of the tunnel engineering prototype through the similarity theory, and the three-dimensional stress field of the physical model is divided into units and normalized to determine the different elastic modulus ratios. The device can realize non-uniform loading of the complex stress field.

The invention discloses a simulation test method for an asymmetric support effect of a weakly-cemented and strongly-expansive soft rock roadway, and belongs to the technical field of coal mining. The method aims at solving the problems that in the prior art, it is difficult to truly reproduce roadway asymmetric large deformation under the weak cementing-strong expansion-rich water multi-field coupling effect, and the effectiveness of an asymmetric supporting scheme cannot be rapidly and quantitatively evaluated. According to the technical scheme, real rock mass parameters are obtained through on-site rock core sampling; similar materials are prepared based on the similarity theory, a physical model is constructed, and the surrounding rock deformation environment is reproduced in a high-fidelity mode; designing a plurality of asymmetric support schemes for simulation comparison; a non-contact full-field strain measurement system is adopted to monitor surrounding rock deformation, and an optimal supporting scheme is optimized and applied to field verification. According to the method, complex field problems are solved to a controllable laboratory environment, rapid and accurate optimization of a supporting scheme is achieved, and a scientific and reliable basis is provided for soft rock roadway supporting design.

The application relates to a device for quickly determining the rotating speed of a ventilator on a construction site and a use method thereof, and relates to the technical field of ventilator engineering application debugging. The device comprises a hardware main body composed of a controller and a touch display screen, and a control software system with five modules of built-in parameter input, curve fitting, system resistance calculation, target working condition solution and result output. The method is based on the similarity theory of the ventilator, accurately quantifies the pipeline system resistance characteristics through on-site measurement, one-key solves the target running rotating speed, and simultaneously completes the motor adaptability determination and the belt pulley transmission ratio recommendation. The application does not need to transform the original control system of the ventilator, can complete the on-site debugging offline, greatly improves the rotating speed calculation precision, realizes the standard reaching after the replacement of the belt pulley once, and significantly shortens the debugging period and reduces the engineering cost.

The invention discloses a reduced scale similarity test platform and method for slope type gravity energy storage, and relates to the technical field of energy storage, and the platform comprises an upper warehousing system, a slope transportation simulation system, a lower warehousing system, an energy storage load-carrying vehicle, an intelligent monitoring and control system, and a multi-parameter test analysis system. Through combination of the height adjustable characteristic of the upper warehousing system and the fixed foundation of the lower warehousing system, different terrain height differences and gradient conditions can be flexibly simulated, the energy storage load-carrying vehicle is strictly designed based on the physical similarity theory, accurate correspondence of dynamic characteristics between a reduced scale model and a prototype is ensured, and the dynamic performance of the energy storage load-carrying vehicle is improved. Through cooperative work of the intelligent monitoring and control system and the multi-parameter test analysis system, real-time sensing, comprehensive data acquisition and deep analysis of the operation state of the platform are achieved, and the automation degree, the measurement precision and the research efficiency of the test are greatly improved.

The present invention discloses a progressive power grid planning evaluation method and system based on a combination assessment theory, and relates to the technical field of power grid assessment and optimization. The method includes: correcting a weight of an obtained index by using a combination weighting method; obtaining an assessed value based on a similarity theory assessment method; standardizing an index by dimensionless processing; and performing evaluation based on nonparametric regression. The present invention ensures objectivity and fairness of an assessment result and the efficiency and the accuracy of assessment are improved. The present invention may be adaptively adjusted, making the assessment result closer to reality.

This invention provides a dynamic load similarity model test system and related methods and equipment, belonging to the field of civil engineering testing technology. The system includes: a box frame structure, a pavement-underpass tunnel similarity model, a vibrator module, and a data monitoring and acquisition module. The pavement-underpass tunnel similarity model is constructed from similar materials within the box frame structure based on similarity theory. The vibrator module is used to simulate and apply dynamic loads on the pavement and / or vibration loads from the underpass tunnel. The data monitoring and acquisition module is used to collect dynamic response data of the structure under the relevant loads and load value information of the two types of loads. This invention can provide a reliable physical test verification method for studying the dynamic response characteristics of pavement structures and underpass tunnel structures under the coupled influence of pavement dynamic loads and underpass tunnel vibration loads, while taking into account ease of implementation and cost.

This invention discloses a scaled-down model simulation system and method for oil-immersed transformers based on similarity theory, comprising: S1 determining the transformer model and structural parameters required for multiphysics analysis, as well as the similarity ratio of the scaled-down model for simulating physical phenomena; S2 determining the eddy current field control equations adapted to the transformer's electromagnetic field using Maxwell's equations, and deriving the eddy current field similarity criterion based on similarity theory; S3 determining the energy conservation similarity criterion based on the energy conservation equation; S4 determining the momentum conservation similarity criterion based on the momentum conservation equation; S5 determining the convective heat transfer similarity criterion based on convective heat transfer boundary conditions; S6 determining the heat flow compensation principle by integrating various similarity criteria, performing temperature-fluid field simulation, and comparing the simulation results with those of the original structural model and prototype experimental results. This invention is computationally simple, highly accurate, and efficient, and can be well applied to engineering practice.

The present application belongs to the technical field of tunnel construction geological disaster prevention, and discloses a fine treatment decision method of fusion multi-source data of complex stratum disaster source, comprising the following steps: collecting and fusing multi-source geological data, constructing a three-dimensional geological model; generating disaster source risk dynamic evaluation and treatment scheme; based on the fluid-solid coupling similarity theory, using physical model test to verify the preliminary treatment scheme, determining the optimal treatment scheme; executing the optimal treatment scheme, and dynamically regulating and controlling the treatment process; after treatment, evaluating the treatment effect through post-data, and feeding back the effect data to the three-dimensional geological model and knowledge base, realizing dynamic updating of the model and self-learning of the decision system. The present application adopts the above treatment decision method, solves the problems of traditional method relying on experience, information being one-sided and treatment being extensive, realizes advanced accurate prediction and fine and personalized treatment of complex stratum disaster source, and significantly improves the safety and efficiency of tunnel construction.

The invention discloses an optical turbulence transferable feature construction method under heterogeneous observation conditions, and belongs to the technical field of atmospheric optics, boundary layer meteorology and data driving prediction. The method comprises the following steps: firstly, preprocessing heterogeneous observation data to obtain an effective observation sequence meeting a construction condition; secondly, introducing a unified reference height mapping item and a stability bounded correction item into a Monin-Obukhov similarity theory framework, constraining a measurement height item and the stability correction item, and constructing an optical turbulence characterization quantity; then isomorphic re-parameterization is carried out on the effective observation sequence according to constituent variables and a function relation of the optical turbulence characterization quantity, and transferable features with unified physical significance are generated; and finally, carrying out time sequence expansion on the transferable features to form a transferable feature set to be called by a future optical turbulence characterization quantity prediction model of the target scene. According to the method, feature space offset among different observation conditions can be reduced, and feature physical interpretability and migration consistency are improved.

The invention belongs to the technical field of soil type sampling point generation. The invention provides a sample point generation method based on typical soil types. According to the embodiment of the invention, the method comprises the steps: designing a soil-environment text information model based on the native species text data, so as to organize and store the soil type extracted from the native species text and the corresponding environment factor text information; based on a geographic similarity theory, it is assumed that a corresponding relation exists between distribution of soil type information in a geographic space and combination of an environment factor set in an attribute space, and the problem of obtaining soil type sample points based on text data is converted into the problem of obtaining a specific environment factor combination and soil type semantic information of the specific environment factor combination. Guiding environmental factor data clustering by using the soil-environment text information, and further obtaining an environmental factor combination and soil type information thereof; and selecting representative soil type sample points based on the environmental factor information, and generating a typical sample point set.

The application discloses a similarity method for obtaining gas film characteristics of a three-float gyroscope dynamic pressure motor, and takes an internal dynamic pressure motor of a certain gyroscope as an example. Firstly, the shape characteristics and internal structure features of the motor are analyzed, the distribution area of gas is determined according to the structure features, then the similarity model of gas flow in the semi-spherical dynamic pressure motor across scales and small gaps is established by combining the computational dynamics method and the similarity theory, and the aerodynamic characteristics such as the gas pressure and flow in the bearing gap of the dynamic pressure motor are obtained by model calculation. The application can accurately obtain the gas film characteristic parameters of the dynamic pressure motor by solving the gas film flow similarity model without complex measurement and calculation. The method is characterized by combining the computational fluid dynamics method and the similarity theory and used for the gas film characteristic analysis of the three-float gyroscope dynamic pressure motor, and provides a theoretical basis for the optimized design and fault analysis of the dynamic pressure motor.

The invention belongs to the technical field of rock-soil anchoring engineering, and particularly relates to an anchor rod cumulative displacement and bearing performance evolution law test method under cyclic loading, which is characterized in that a model experiment is designed based on a similarity theory, the similarity ratio of geometric, physical and mechanical parameters is determined, and an experiment scheme is optimized by combining uniform design or mixing uniform design; by simulating a soft rock stratum, cyclic loads and an anchor rod assembly, accumulated displacement, rigidity and ultimate bearing capacity under different cycle times and reference load ratios are tested; and establishing an evolution equation of the associated sum, and quantifying the performance degradation law of the anchor rod. The problem that in the prior art, a system cyclic load experiment method is lacked is solved, efficient and accurate performance evolution analysis is achieved, and a basis is provided for engineering durability design.

The invention belongs to the technical field of tunnel construction ventilation, and particularly relates to a high-altitude long, large and deep tunnel ventilation model device and a simulation test method. The simulation test method of the ventilation model device for the high-altitude long, large and deep tunnel comprises the steps of similarity criterion model design, model construction, dynamic working condition simulation, working condition execution, data acquisition and data analysis. According to the simulation test method of the ventilation model device for the high-altitude long, large and deep-buried tunnel, a simulation test method capable of truly reflecting the ventilation and dust migration rule of the high-altitude long, large and deep-buried tunnel under the low-pressure condition is formed by applying a similarity theory, modular design and dynamic working condition simulation; not only is the defect of the traditional numerical simulation or plain environment fixed model in high altitude environment adaptability overcome, but also the simulation of various dynamic construction scenes is realized by flexibly adjusting model parameters and setting working conditions.

The invention discloses a general cabin function modeling method based on a similarity theory and a neural network and a related device, and belongs to the field of wind turbine monitoring and control, and the method comprises the following steps: carrying out CFD calculation on a streaming flow field of a wind turbine geometry structure, obtaining a convergence solution, carrying out the post-processing of the convergence solution, and obtaining a speed mean value of a cabin velocimeter; meanwhile, the installation position distance of the cabin velocimeter in the wind turbine cabin is obtained, and the relative position of the cabin velocimeter is obtained by combining the geometric dimension characteristics; and by taking the relative positions of the geometric dimension characteristics, the Reynolds number and the cabin velocimeter as input parameters and taking the ratio of the speed mean value to the incoming flow wind speed as output, a neural network is constructed and trained, a general cabin function neural network model is obtained, and then the ratio of the cabin wind speed to the incoming flow wind speed of different types of wind turbines is obtained. The method can solve the problem that in the prior art, a cabin function is constructed directly based on the incoming flow wind speed and a cabin fan and is difficult to adapt to different types of wind turbines.

The invention discloses a flow-induced vibration speed effect frequency-band-division equivalent method, and belongs to the field of aircraft structure dynamic strength optimization. On the basis of the length scaling factor, the thickness scaling factor is introduced, and the problem that the aerodynamic load frequency and the structure frequency are inconsistent due to the speed difference is compensated through the thickness factor; on the basis, the flow-induced vibration similarity law considering the flow velocity effect is deduced, prediction can be carried out in combination with actual working conditions, similarity theory prediction errors caused by velocity differences are further reduced, and the reliability of the flow-induced vibration equivalent method based on the scaling model is improved. According to the method, a curved plate structure flow-induced vibration similarity criterion expression is established in a frequency division mode by adopting a frequency division band method according to different structural mode types. Complex aircraft structure response prediction is simplified, the defects of the current flow-induced vibration similarity theory are overcome, the prediction reliability of the aircraft structure dynamic response similarity method can be improved, and improvement of the precision and efficiency of high-speed aircraft structure dynamic response assessment is facilitated.

The invention provides a cross-scale optimal scale ratio selection method for a transient strong nonlinear scale model test, and belongs to the field of engineering structures. The problem of large similarity conversion error caused by theoretical inapplicability of the existing method is solved. The method comprises the following steps: based on a model component test of a classical similarity theory, introducing a first-order derivative relationship that a variable pi item changes along with a scale ratio, establishing a micro-grouping similarity model and carrying out Taylor expansion to obtain an iterative relationship that the variable pi item changes along with the scale ratio; setting a scale ratio sequence, and converting the iterative relationship into a parabola mapping model representing the dynamic behavior of the system; the method comprises the steps of determining a pervasive constant and a scale-free interval corresponding to the pervasive constant on the basis of a reformation group theory, selecting a cross-scale optimal scale ratio according to the number of iterations, carrying out a model test, obtaining a model change pi time sequence, and carrying out similarity conversion on a model test result to a prototype on the basis of a parabola mapping model and the reformation group theory. The method is used in the field of transient strong nonlinear system dynamic response analysis.

The present invention provides a method for evaluating the dynamic characteristics of a single-disk cracked rotor based on the similarity theory. First, the dimensions of each part are determined according to the prototype of the single-disk cracked rotor; then, the similarity ratio κ of the shaft diameter is determined using the similarity theory d , and then the similarity ratio κ of the shaft length is obtained successively according to the formula derived from the similarity theory x , the similarity ratio κ of the single-disk diameter D , the similarity ratio κ of the single-disk thickness H , the similarity ratio κ of the bearing stiffness K , and the similarity ratio κ of the crack depth a1 is the same as the similarity ratio κ of the shaft diameter d ; the dimensions of the similarity model are determined according to the similarity ratio, and rotor dynamics analysis is performed on the prototype and the similarity model to analyze their critical speeds and natural frequencies. The present invention considers the influence of cracks in the similarity calculation, and the dynamic characteristics of the prototype can be evaluated and predicted using the similarity model, which has significant engineering practical value.

The invention discloses a test device and method for simulating a roadway deformation rule in a coal seam recovery process, and relates to the technical field of roadway test simulation. The device comprises a model experiment box used for simulating the actual environment of the coal seam recovery process; the water bag pressurization system is arranged in the model experiment box and used for simulating the pressurization effect in the coal seam recovery process; the excavation simulation drawing system is used for simulating the coal seam stoping process by utilizing the movement of a drawing plate and comprises the drawing plate and an electric hoist hanging rod, the drawing plate is aligned with one side of the roadway reduced scale model, and the drawing plate is vertically pulled out of the model experiment box through the electric hoist hanging rod to simulate the layer-by-layer stoping process of the coal mine; and the displacement acquisition system is used for acquiring deformation data of the roadway in the simulated coal seam recovery process in the model experiment box. According to the method, the model prepared based on the similarity theory is constructed, pressurization, recovery and monitoring tests are carried out, and the deformation and damage behaviors of the coal mine tunnel in the recovery process can be quantitatively analyzed.