236 results about "Simulated rainfall" patented technology

The invention provides a rainfall and earthquake coupled slope simulation method and system. The method comprises the following steps: constructing a coupling numerical model through multi-physics field data of a slope; the dynamic coupling effect of rainfall and earthquake is simulated by initializing a seepage field and loading earthquake power; the stability of the simulation result is comprehensively evaluated through iteration of a strength reduction method, and whole-process coupling from seepage to dynamic response of the slope is achieved. SeismoSignal is used for processing seismic waves, and the problem that the value of kinematics parameters is not zero when the seismic action is finished is avoided; the allowable maximum negative pore water pressure boundary is assigned to the slope surface of the side slope, the actual steady-state seepage field of the side slope is restored, and the seepage field in the side slope under different rainfall conditions is accurately calculated; by adopting an unsaturated soil dynamic seepage model for a seepage field, Rayleigh damping is introduced and an earthquake load is applied, so that cross-time scale coupling is realized. The method is simple and convenient to operate, high in calculation efficiency and accurate in calculation result, and has practical significance and value in research of the problem in the rock-soil field.

The invention relates to the technical field of geological disaster model tests, in particular to a cold region soil engineering collapse monitoring device, system and method.The cold region soil engineering collapse monitoring device comprises an outer box, an inner box and a side slope model, the side slope model is arranged in the inner box, and the outer box is used for containing the inner box; the rainfall assembly is movably mounted on the inner box and is used for controllably and quantitatively spraying water or mist towards the inner box so as to simulate a rainfall or plum rain state; the vibration assembly is arranged at the bottom of the side slope model, the side slope model is adjustably installed on the vibration assembly, and the vibration assembly is used for enabling the side slope model to generate vibration so as to simulate the vibration state; the device further comprises an electromagnetic force loading assembly, and the electromagnetic force loading assembly is arranged on the outer side of the side slope model and used for applying loads in at least one direction to the side slope model. The device is used for simulating the slope stability of the cold region soil engineering under the multi-factor coupling effect.

The invention discloses a rainfall prediction method and system for the Beijing, Tianjin and Hebei region, and relates to the technical field of rainfall prediction, and the method comprises the steps: obtaining multi-source data, carrying out the preprocessing of the data, extracting the core characteristics of the data, carrying out the dynamic rainfall modeling according to the core characteristics of the data, and simulating a rainfall evolution path; and constructing a rainfall prediction model, performing rainfall intensity prediction based on the rainfall evolution path, performing extreme weather early warning based on a prediction result, and generating a rainfall distribution diagram of a high-risk area. Through fusion of multi-source data, the generative adversarial network and spectral analysis, the spatial resolution of the data and the rainfall evolution prediction capability are improved, the real-time performance and the accuracy of rainfall prediction are improved in combination with dynamic rainfall modeling, a fractional order differential equation and a multiple regression model, and the prediction accuracy is improved. The rainfall prediction challenge under complex weather conditions can be effectively dealt with, and accurate prediction of rainfall intensity and extreme weather events is realized.

The invention provides an experimental system of a hot water force coupling landslide model, which is characterized in that on the basis of a large freezing and thawing environment test box, an artificially manufactured slope model is placed in the large freezing and thawing environment test box, and meanwhile, a rainfall and snowfall system, a slide rail system, a water level control system, a servo loading system, a medium strain rate disturbance system and a data acquisition system are integrated; a complete slope landslide model indoor experiment device under the combined action of freeze thawing-load-seepage is formed and used for simulating slope landslide caused by rainfall and snowfall, blasting vibration, slope body water level change and other conditions, and multi-source heterogeneous data of the whole process of the landslide from the unstable factor accumulation stage, the temporary sliding stage, the sliding stage and the stable stage are obtained.

The invention relates to an experimental method for researching slope surface erosion of a waste dump slope under rainfall conditions, which comprises the following steps: laying simulated soil in an experimental tank in layers and compacting the simulated soil, the inner core of the simulated soil is a slag mixture in an actual open pit coal mine waste dump, and the surface covering soil of the simulated soil is humus covering soil of the waste dump slope; performing manual slope cutting to obtain a side slope, so that the longitudinal section of the simulated soil body is in a right trapezoid shape; planting vegetation on the surface layer of the side slope, and culturing the vegetation to grow; an artificial rainfall device is arranged above the simulated soil body and comprises a plurality of sprayers, and the pitch diameter and the end point velocity of raindrops are calibrated before artificial rainfall; starting an artificial rainfall device, spraying water to the upper surface of the simulated soil body by a nozzle, simulating rainfall, and recording the total runoff volume; the soil on the surface of the side slope is subjected to water loss under the action of simulated rainfall and slides to the sample collecting device at the bottom of the side slope, the sediment yield in the sample collecting device is recorded, and the water and soil loss condition is judged.

The invention discloses an active anti-floating drainage model test device and test method considering saturation change, and belongs to the technical field of active anti-floating of buildings. The test device comprises a boundary model box, a building model box, a plurality of pore pressure sensors, a plurality of dielectric constant sensors, a pressure limiting drainage pipe for simulating active anti-floating equipment in an actual building, a water head control device and a rainfall simulation device, and can simulate a seepage field of an underground space under the condition of active anti-floating measures during rainfall. The drainage condition of the underground space under the condition is reproduced; the pore pressure sensor and the dielectric constant sensor monitor the saturation change of the soil body in real time, the vacancy of the existing test device in the saturation change factor of the soil body is filled up, the drainage condition of the active anti-floating measure and the seepage law of the soil body in the unsaturated-saturated transition process of the soil body under different rainfall and different stratum conditions can be demonstrated, and the test device has a wide application prospect. Scientific basis and data support are provided for optimization application of active anti-floating measures under different saturation working conditions.

The invention discloses a deep learning-based less-data small-watershed water level forecasting method. The method comprises the following steps of: acquiring historical hourly rainfall data of a plurality of upstream rainfall stations of a small watershed and historical hourly water level data of a downstream water level station; preprocessing the acquired data, and screening rainfall sessions with the rainfall capacity of over 15mm per hour within 24 hours and corresponding water level data; the method comprises the following steps: performing data enhancement through a double-generation GAN model, generating simulated rainfall data by a first GAN model by taking white noise as input, generating simulated water level data by a second GAN model by taking rainfall data as input, combining historical data and simulated data, performing normalization, and dividing the data into a training set, a verification set and a test set according to a proportion; constructing a CNN-LSTM hybrid prediction model, training the model by taking a Nash coefficient as an optimization target, and verifying the prediction model by adopting a progressive verification strategy; and deploying the model for real-time water level prediction to obtain a water level prediction result. The method can break through the bottleneck of few data, and achieves the high-precision mountain torrent early warning of the small watershed water level.

The invention provides an urban rainfall area IDF curve establishment constraint method and system. The method comprises the following steps: collecting actually measured rainfall data and GCM simulated rainfall data; establishing a spatial downscaling model, and performing spatial downscaling on the grid monthly rainfall estimated by the GCM in the future period; calculating the condition transition probability of rainfall occurrence in each calendar month in the future period; generating a parameter set for driving a random rainfall generator, and inputting the parameter set into the random rainfall generator to obtain a daily rainfall sequence in a future period; performing time discretization from the daily scale to the hour scale on the daily rainfall sequence in the future time period; extracting an annual maximum value sequence from the hour drop sequence in the future time period to carry out regional frequency analysis, and constructing an urban rainfall region IDF curve; constructing a random forest model, and deducing alternative factors of IDF curve migration change; and an emergence constraint model is constructed, and the uncertainty of urban rainfall risk prediction under future climate change is reduced. The accuracy of rainfall frequency analysis is improved.

The invention discloses a black soil erosion simulation system with rainfall runoff and snow melting confluence coupling effect. The system comprises a data acquisition system, a rainfall simulation system, a snow melting simulation system, a runoff collection and monitoring system, a black soil simulation area, a data processing and analysis system and a control system. The data acquisition module comprehensively collects various types of data of the black soil area; each simulation subsystem accurately simulates rainfall, snow melting and coupling processes; the runoff collecting and monitoring subsystem monitors runoff in real time; the black soil simulation area simulates the field condition; the data processing and analysis module deeply mines data, establishes a model and predicts a trend; and the control system realizes automatic accurate control. The whole system adopts a modular design and is convenient to maintain and upgrade. The operation, system flow, maintenance upgrading and application cases of each module are elaborated through a specific implementation mode, a powerful tool is provided for black soil erosion research, and a scientific basis is provided for making prevention and control measures.

The invention belongs to the related technical field of waterlogging simulation, and particularly relates to an urban waterlogging simulation device and method based on a digital twin system, and the device comprises the digital twin system, a physical sand table, a sensor, and a microcontroller. The twin system is connected with the physical sand table through a microcontroller and sensors arranged on the physical sand table, and is used for simulating the underground pipe network and surface ponding conditions of the urban target area under the rainfall condition, and regulating and controlling the physical sand table through the microcontroller to realize dynamic verification of the urban inland inundation process; the sensor is used for collecting underground pipe network and surface water accumulation condition data in the physical sand table in real time and transmitting the data back to the twin system, bidirectional interaction and synchronous display of the virtual environment and the physical sand table are achieved, and dynamic simulation and verification of the urban inland inundation process are achieved on the whole. Wherein the twinborn model is composed of a pipe network model, a road model and a building model. According to the invention, real-time mapping and interaction of the physical experiment and the virtual model of the urban drainage system can be realized.

The invention belongs to the technical field of traffic geographical environment safety risk prediction, and particularly relates to a railway line gully catchment surface disaster prediction analysis method based on a three-dimensional geographical scene, and the method comprises the following steps: S1, preliminarily delineating a monitoring range; s2, environment monitoring sensing equipment is installed; s3, collecting key index information of the drainage system; s4, acquiring three-dimensional geographic model data; s5, processing the acquired data; s6, calculating and analyzing the ground elevation and area of the monitoring area; s7, simulating rainfall and calculating total rainfall; s8, calculating the total rainwater convergence amount; s9, performing active flooding analysis on the terrain elevation model; s10, calculating and analyzing the specific position of the catchment surface and catchment area and volume parameters changing along with time; and S11, predicting and evaluating possible catchment surface disasters. The technical problems of insufficient real-time performance, high data acquisition cost, complex operation and high calculation difficulty in the prior art can be solved, and the method has a relatively good market application prospect.

Three-dimensional target detection in complex weather is a key problem in intelligent driving, and extreme weather is easy to interfere with a sensor, so that the detection precision is reduced. The invention provides a three-dimensional target detection method in complex weather based on millimeter wave radar and vision fusion, and designs an image generation module for simulating complex environment images such as rainfall, snowfall and the like aiming at the problem of scarcity of bad weather image data in a public data set. And by adopting a self-distillation mechanism, multi-modal knowledge learned by the teacher model in normal weather is migrated to the student model trained in bad weather, so that the detection performance in a complex environment is improved. Besides, in order to enhance the multi-modal information fusion capability, gating fusion modules are introduced into the teacher model and the student model, and a learnable gating fusion mechanism is utilized to dynamically adjust weight distribution of multi-modal feature fusion. According to the method, the robustness and the detection precision of the model under the complex weather condition are effectively improved.

The invention relates to the technical field of permeable material testing, solves the problem that a more complete material selection basis cannot be provided for engineering design in the prior art, and provides a method, a device and equipment for testing the heat dissipation performance of an evaporative cooling material and a storage medium. Acquiring a first mass change value of the to-be-tested sample in the simulated rainfall process; when the instantaneous moisture content meets a preset condition, rainfall simulation is stopped, and a second mass change value of the to-be-tested sample in a preset duration is obtained; placing the to-be-tested sample in the wind tunnel test platform, and obtaining a third mass change value and a surface temperature change value of the to-be-tested sample and an environment temperature change value, a humidity change value and a wind speed change value of the wind tunnel test platform; and obtaining a heat dissipation performance evaluation result of the to-be-tested sample based on the parameters. According to the method, quantitative, comparable and repeatable evaluation of the cooling capacity of the permeable material is realized, and a scientific basis is provided for material performance judgment and application scene selection.

The system comprises a water storage container and a control system, a partition plate and a moving plate connected with a driving mechanism are arranged in the water storage container, a sensor system of the control system is used for monitoring state parameters of the moving plate and the water supply flow of the water storage container, and after the target rainfall intensity is determined, the target rainfall intensity is determined; the controller is used for obtaining state estimation of the moving plate based on the state space model and the state parameters of the moving plate, calculating real-time rainfall intensity by combining the water supply flow of the water storage container, and dynamically controlling the driving mechanism to operate in a closed-loop mode with the target of reducing the error between the target rainfall intensity and the real-time rainfall intensity. The movable plate is driven to move relative to the partition plate to adjust the water outlet area, rainfall holes of the water storage container discharge water to simulate rainfall for an irrigation test, dynamic response continuous adjustment of simulated rainfall intensity can be achieved, natural rainfall scenes of different rainfall intensities and modes can be reproduced in a high-precision mode, a reliable test platform is provided for agricultural irrigation research, design is flexible, and the test efficiency is high. The operability is high.

The utility model relates to the technical field of rainfall simulation, in particular to an artificial rainfall simulation device which comprises a water supply system, a control system, an intelligent terminal system and an acquisition system. The water supply system comprises a water tank, a water pump, a water inlet pipe and a rainfall sprayer. The water pump is arranged on the water inlet pipe and used for pumping water in the water tank to the rainfall sprayer. A control valve is arranged on the rainfall spray head; the intelligent terminal system is used for man-machine interaction, communication with the control system is realized by connecting a local area network built by the system, and data of the intelligent terminal system can be timely transmitted to the control system; the acquisition system comprises a rain gauge and a pressure sensor. The pressure sensor is arranged on the water inlet pipe and used for collecting the pressure value of the water inlet pipe. And the rain gauge is arranged below the rainfall spray head and is used for collecting rainfall. The device has the effect of facilitating rainfall research by simulating artificial rainfall.

The invention discloses a slope soil erosion prediction method, system, equipment and medium, and relates to the technical field of soil erosion, and the method comprises the following steps: taking slope soil with different grain composition as a research object, and carrying out a rainfall simulation experiment; constructing a production and construction project soil erosion prediction model according to the product of a subrainfall erosivity factor, a soil erodibility factor, a slope length factor, a slope factor and a slope surface area on the basis of the grain composition characteristic particle size; and predicting the soil erosion of the slope surface of the to-be-predicted production and construction project through the production and construction project soil erosion prediction model. According to the model disclosed by the invention, a direct quantitative relationship between the characteristic particle size and the erosion strength is established, so that an acquisition way of the soil erodibility factor is simplified, the dependence of the model on complex and expensive soil physical and chemical parameter analysis is greatly reduced, and the operability and the popularization efficiency of the model in a production field are greatly enhanced.

The utility model belongs to the technical field of goaf tunnel rainfall equipment, and particularly relates to a test device for simulating rainfall infiltration of a goaf tunnel. Comprising a model box system used for simulating a goaf; the rainfall simulation system comprises spraying equipment and a water supply system, the spraying equipment is mounted above the model box system, and the water supply system supplies water to the spraying equipment; and the data acquisition system is used for acquiring various parameters in the model box system during rainfall simulation. According to the utility model, the magnitude and speed of rainfall can be controlled in real time through the flowmeter and the ball valve, and the uniformity of rainfall can be ensured through the spraying shower head, so that the effect of uniformly distributing moisture in a rock-soil body is achieved; and by prefabricating tunnel and goaf models, the size of the repeated test can be unified, and the influence of multiple variables on the test result is reduced.

The invention belongs to the technical field of flood risk assessment, and particularly relates to a plain water network area standard-exceeding rainstorm risk assessment analysis method, which comprises the following steps: 1, data acquisition: acquiring comprehensive data of a to-be-assessed area, the comprehensive data comprises landform, a hydraulic pipe network, hydrologic catchment, a station gate, a river network, a river channel, an embankment, past rainfall and humanity information; 2, module coupling: according to the acquired comprehensive data, constructing a comprehensive data module of the to-be-evaluated region, and constructing a stereoscopic model of the to-be-evaluated region through the comprehensive data module; 3, verifying the model; 4, simulating rainfall; and 5, outputting a result. By establishing a plurality of data modules, the plurality of data modules are coupled into the region model, and rainfall is simulated through the rainfall module, so that real-time calculation of rainstorm in the assessment region is realized, the real condition of the assessment region is better fit, and the effect of improving the risk assessment accuracy is achieved.

The invention relates to the technical field of soil erosion and cadmium migration simulation experiments, in particular to a karst slope cropland soil erosion and cadmium migration simulation experiment device and method.The karst slope cropland soil erosion and cadmium migration simulation experiment method comprises the steps that a preset soil sample is placed on a soil erosion simulation platform, and environmental factors are adjusted according to experiment requirements; comprising terrain gradient, earth surface rock exposure rate, underground porosity and geological structure; starting a rainfall simulation system, performing rainfall simulation according to preset rainfall intensity, duration and mode, starting a data acquisition system at the same time, and monitoring and recording rainfall parameters in real time; in the rainfall process, soil erosion phenomena including earth surface / underground sediment yield, runoff yield and erosion rate are observed and recorded, and sediment samples are collected through a sediment collector; and performing cadmium concentration determination on the collected sediment sample and runoff sample by using a cadmium concentration analysis instrument, and recording data. And a coupling mechanism between the erosion process and cadmium migration can be more comprehensively understood.

The utility model provides a movable variable slope side slope water and soil monitoring device which comprises a movable variable slope side slope simulation device and a movable rainfall simulation device, and the movable variable slope side slope simulation device comprises a movable supporting base, an ecological slope protection structure layer and a variable slope control system arranged on the movable supporting base; the movable rainfall simulation device comprises a movable supporting platform and a rainfall simulation system arranged on the movable supporting platform. The movable variable-gradient side slope water and soil monitoring device can be suitable for various site conditions, can be used for carrying out in-situ simulation test on an exposed mountain side slope, and can also be used for carrying out model test indoors; the movable rainfall simulation device capable of being adjusted and disassembled can be used for carrying out rainfall tests on different water and soil monitoring devices, and meanwhile rainfall simulation can be more real and accurate by adjusting the metering mechanism.

The invention provides a test device for simulating a pollutant migration process under a temperature-moisture coupling effect, and belongs to the field of soil environment scientific research. The test device comprises variable-pressure gas supply equipment, a soil column pipe, exhaust equipment, a rainfall simulation system, evaporation and illumination simulation equipment and a data acquisition and analysis system. The variable-pressure gas supply equipment comprises a pollution gas storage tank and a pressure controller; the soil column pipe comprises an air inlet cavity, a simulated soil column cavity and an exhaust cavity, and a sampling hole is reserved in the simulated soil column cavity; the data acquisition and analysis equipment comprises a distributed optical fiber, a data acquisition instrument, a computer and a gas chromatograph. The test device and the test method provided by the invention can accurately control temperature and humidity, simulate rainfall, evaporation and illumination, are suitable for various soil types, record data in real time through a high-precision monitoring system, and reveal diffusion, convection and adsorption rules of gas in the soil.

The invention relates to the technical field of urban area configuration, and particularly discloses a service area low-impact measure optimization method and equipment based on an SWMM model. According to the method, the rainfall flood management model of the target service area is constructed through the storm flood management model (SWMM), runoff response under the rainfall condition can be accurately simulated in combination with sub catchment area division and low-impact measure optimization, and compared with a traditional static design method, the low-impact measure design efficiency is remarkably improved, and the method has the advantages of being high in practicability and the like. Therefore, the waterlogging problem caused by the rainstorm in the urban service area is effectively relieved; according to the method, the efficiency coefficient is introduced as a quantitative index, iterative optimization is carried out through comparison with the preset threshold value, and it is ensured that the layout parameters of the low-influence measures can dynamically adapt to terrain, soil and rainfall characteristics of different service areas.

The invention discloses a rainfall-type large-scale landslide physical simulation test device and method, and relates to the technical field of landslide simulation tests, the rainfall-type large-scale landslide physical simulation test device comprises a test cabin capable of rotating to adjust an inclination angle; the soil filling platform is rotationally arranged in the test cabin and is used for simulating a landslide; the electric push cylinder is assembled in the test cabin in a hinged mode through a supporting column, the output end of the electric push cylinder is arranged at the bottom of the soil filling platform in a hinged mode, and the electric push cylinder can drive the soil filling platform to rotate in the test cabin, so that the slipped landslide base material moves and resets to the initial position; the earth ramming assembly is used in cooperation with the test cabin and used for ramming the soil on the earth filling platform to form a simulated landslide mass; the rainfall assembly is used in cooperation with the test cabin and used for simulating rainfall on the landslide mass on the soil filling platform, so that use of landslide mass materials can be reduced, the soil filling workload of workers is reduced, and meanwhile starting of the next test is facilitated.

The invention belongs to the technical field of water hammer effect suppression in regional rainfall simulation, and particularly relates to a water hammer effect suppression, regulation and control method for a regional rainfall simulation system. By monitoring the pressure change in the pipeline in real time and dynamically adjusting the valve opening degree of the adjusting valve according to the pressure data of the adjusting valve and the spray head, effective suppression of the water hammer effect in the rainfall simulation process is achieved, the stability of the rainfall simulation experiment is improved, the accuracy of the experiment result is ensured, and in addition, the experiment efficiency is improved. According to the scheme, pipeline water flow characteristics and real-time pressure changes are fully considered, so that prediction, regulation and control of the water hammer effect are more accurate, the requirement of high-precision simulation is met, in a rainfall simulation experiment, equipment damage and data deviation caused by the water hammer effect are effectively avoided, and in addition, the experiment efficiency is improved. And the potential water hammer effect risk in the real-time rainfall process can be early warned, and timely intervention is performed by adjusting the opening degree of the valve, so that the stability of the rainfall simulation experiment is further improved.

The invention discloses a future rainfall prediction method, device and system and a storage medium, and belongs to the technical field of hydrometeorological forecasting, and the method comprises the steps: constructing a multi-site Neyman-Scott rectangular pulse random rainfall model based on the actual measurement data of ground rainfall, optimizing the parameters, and obtaining the optimized multi-site Neyman-Scott rectangular pulse random rainfall model; obtaining a disturbance change factor based on historical rainfall test data and future rainfall simulation data of the optimal GCM, and obtaining a statistical magnitude corresponding to future rainfall prediction data based on the disturbance change factor; and inputting the statistical magnitude corresponding to the future rainfall prediction data into the optimized multi-site Neyman-Scott rectangular pulse random rainfall model to obtain the future rainfall prediction data. According to the method, extreme features of rainfall and spatial correlation features of multi-site rainfall can be accurately simulated, and the accuracy and reliability of future rainfall prediction are improved.

The invention discloses simulation monitoring and method for a granite residual soil slope in a rainfall process under the action of simulated earthquake. The simulation monitoring system mainly comprises a model box, a rainfall module, an earthquake module and a monitoring module, a water collecting tank is arranged at the bottom of the model box, a drainage hole is formed in the left side wall of the water collecting tank and connected with a drainage pipeline, and the drainage pipeline is connected with a drainage box; a water conveying pipeline is arranged at the top of the model box; an intelligent flow control valve is arranged on the water conveying pipeline; the top of the model box is provided with a counter-force cover plate and a force transmission penetration coupler, and a slope top loading system is arranged between the counter-force cover plate and the force transmission penetration coupler; the earthquake module comprises a vibration motor and a base, the vibration motor is fixed at the bottom of the water collecting tank, and the fixed base is arranged below the vibration motor; the monitoring module comprises a pore water pressure gauge, a soil pressure box, a soil engineering data acquisition instrument and a high-speed camera, the soil pressure box is arranged between the side slope front side baffle and the inner side wall of the model box, and the soil engineering data acquisition instrument acquires data and transmits the data to the computer operation terminal. The device can be used for simulating slope model test research under the action of downhill top load and earthquake under the rainfall condition, simulating the thickening rainfall infiltration function and analyzing external influence factors of slope instability failure, and the reliability and authenticity of slope stability research are effectively improved.

The invention relates to the technical field of rainfall simulation, and discloses a portable field artificial rainfall simulation device which comprises a connecting rod, and the outer wall of the connecting rod is fixedly connected with a fixing block used for supporting other structures; the second limiting mechanism is mounted on the connecting rod and used for limiting a connected structure; the spraying mechanism is mounted on the second limiting mechanism and is used for simulating rainfall; the first limiting mechanisms are mounted at the two ends of the connecting rod and used for limiting the connecting rod; the lifting mechanism is mounted on the lower surface of the first limiting mechanism and used for adjusting the rainfall height; the lifting mechanism comprises a first connecting pipe. The rotating sleeve is rotated to drive the threaded rod to move, the first sliding block slides in the first connecting pipe, movement of the threaded rod is limited, the first connecting block is driven to move through movement of the threaded rod, the second connecting block is driven to move through movement of the threaded rod, and then the effect that the height is adjusted to be used in different terrains is achieved.

The invention relates to the technical field of waterproof detection, in particular to an ALC board waterproof detection device which comprises a fixing base, a detection frame is fixedly installed at the top of the fixing base, a main clamping plate is fixedly installed on the inner side wall of the detection frame, and a plurality of springs are fixedly installed on one side of the main clamping plate. The ends, away from the main clamping plate, of the multiple springs are jointly and fixedly connected with a slave clamping plate, the slave clamping plate is arranged in the detection frame in a limiting and sliding mode, and a water storage assembly is arranged in the detection frame and arranged on the side, away from the main clamping plate, of the slave clamping plate. Under the action of the adjusting assembly, the water storage assembly and the water conveying assembly, the purpose that the aperture of the water outlet nozzle and the water conveying flow can be automatically adjusted when the thickness of the plate changes is achieved, the simulated rainfall intensity is made to be matched with the thickness of the casual inspection plate, and therefore a more accurate and reliable waterproof detection result is obtained.

The utility model belongs to the field of field experiment systems, and discloses a rain reduction experiment device for a high and cold peat land, which comprises a rain interception assembly, a support assembly and a water cut-off assembly, the rain intercepting assembly is used for guiding rainwater to the outside of the sample plot; the supporting assembly is used for supporting the rain intercepting assembly above the ground of the high and cold peat land; the water cut-off assembly comprises a waterproof piece which is used for surrounding the outer side of the supporting assembly and extends into the position below the ground of the high and cold peat land. The device disclosed by the utility model can well realize simulated rain reduction of the high and cold peat land, accurately obtain an experimental structure and avoid interference to the natural state of an ecological system.

The invention provides a soil slope water flow erosion resistance test device and a test method thereof, and relates to the field of soil body soil mechanics parameter measurement. The soil slope water flow erosion resistance test device comprises a fixing frame, guide rail frames are fixedly connected to the periphery of the bottom of the fixing frame, and an air cylinder frame is fixedly connected to the side, close to the guide rail frames, of the fixing frame; an adjusting assembly is arranged in the guide rail frame, and a traction assembly is arranged on the adjusting assembly; a pressurizing assembly is arranged in the air cylinder frame, and a spraying assembly is arranged on the pressurizing assembly. According to the soil slope water flow erosion resistance test device and the test method thereof, through cooperation of the adjusting assembly, the traction assembly, the pressurization assembly and the spraying assembly, synchronous test operation of multiple sets of scenes is completed under the conditions of different simulated rainfall and different soft and hard soil, the multiple sets of scenes can form distinct comparison reference, repeated operation is not needed, time and labor are saved, and the test efficiency is improved. And meanwhile, water resources are saved.