318results about "Hydraulic models" patented technology

The invention relates to the technical field of fishways, in particular to a canal fishway structure, construction and design method.The canal fishway structure, construction and design method comprises the following steps that S1, a hub fishway database is established, the swimming capacity of target fishes passing through a fishway is evaluated, and the migration ecological characteristics of the fish passing objects are determined; s2, designing a fishway scheme, and determining a fishway structure preliminary design scheme; s3, designing a fishway engineering local section physical model, and performing a fishway engineering local section physical model test to obtain a pool chamber structure recommendation scheme located at the upstream of the eel way in the vertical seam type fishway; and S4, establishing a fishway overall model, and performing a fishway overall model test to determine a fishway overall structure scheme. According to the design method of the canal fishway, a theoretical basis is provided for arranging an eel fishway suitable for migration of eels and eriocheir hepuensis and a vertical seam type fishway suitable for migration of squaliobarbus curriculus and dace, and then migration channels are provided for the eels, the squaliobarbus curriculus, the sinilabeo, the river perches, the eriocheir hepuensis and the like.

The invention discloses a riverway three-dimensional water flow numerical simulation method, and relates to the technical field of intelligent water conservancy simulation, and the method comprises the steps: generating a longitudinal long and narrow hexahedral mesh of a main riverway in a C gradient direction through employing a mucous network growth algorithm, and outputting a hexahedral mesh with a shear layer identifier; turbulence viscosity coefficient distribution is dynamically initialized through a DDPG reinforcement learning model, and turbulence parameters are output; inputting the hexahedral mesh with the shear layer identifier and turbulence parameters into a coupling solver, performing parallel numerical solution, and outputting transient flow field data; a lambda 2 criterion is adopted to identify a vortex core area and calculate a vorticity modulus, a transverse circulation is defined, an on-way distribution cloud picture is generated, an immersive VR scene is constructed through a Unity 3D engine, and a three-dimensional visual water flow simulation scene with a physical feature label is output. Through fusion of lambda2 criterion vortex identification and a Unity 3D visualization technology, a complete solution with both calculation precision and engineering practicability is provided for river flow simulation.

The invention relates to the technical field of fishways, in particular to a fishway overall model test method which comprises the following steps: S1, establishing a fishway overall model design scheme based on a preliminary design scheme; s2, a fishway overall model is manufactured based on the fishway overall model design scheme, the fishway overall model is designed to be a normal model, the fishway overall model is designed according to a gravity similarity criterion, and geometric similarity, water flow motion similarity and dynamic similarity checking is conducted on the fishway overall model design scheme; and S3, performing a fishway overall model test on the basis of the fishway overall model, and optimizing the fishway overall arrangement structure scheme so as to obtain a final fishway overall structure scheme. According to the fishway overall model test method, the fishway overall arrangement structure scheme is optimized, so that the final fishway overall structure scheme is obtained, and a theoretical basis is provided for fishway overall optimization.

The invention provides a method and a system for predicting the wear life of an overflow surface of a release structure, and is suitable for the technical field of hydraulic engineering monitoring. The prediction method comprises the steps of data acquisition equipment arrangement, model training, actual measurement data acquisition, model application and result display and maintenance, and a prediction system is designed based on the method. A sensor is arranged to collect relevant abrasion data of the flow passing surface of the release structure, and an abrasion depth prediction model is designed based on a double-channel structure; static data features are extracted through full connection layer coding, long-term dependence features are extracted through LSTM and an attention mechanism and fused to obtain a comprehensive feature vector, and finally the wear depth is predicted; dynamic prediction of the wear life is achieved through model deployment and periodic actual measurement data input, the model is updated in combination with nondestructive testing data, and the prediction precision is improved; the method effectively solves the problem that the service life of the overflow face of the water drainage building is abraded in the complex water flow environment.

The invention belongs to the technical field of hydraulic engineering, and particularly discloses an embankment burst and flood routing simulation method which comprises the following steps: step 1, subdividing a breach area of an embankment by adopting a rectangular grid, and respectively subdividing a river channel on one side of the embankment and a protection area on the other side of the embankment by adopting an unstructured grid; step 2, flood information in the unstructured grid is acquired, and the flood information is interpolated into the rectangular grid; and step 3, determining outburst information of the breach area by using the water-soil coupling kinetic model, interpolating the outburst information into the unstructured grid, and repeating the step 2 and the step 3 until a preset condition is met. According to the method, a water-soil coupling dynamic model is adopted to describe the dike burst process, parameters such as the burst rate and the final breach size of an existing model do not need to be manually given, and full-automatic simulation of the dike burst process is achieved. According to the method, the structure-non-structure double grid technology is adopted, and the precision and efficiency of the embankment outburst process and outburst flood routing calculation are both considered.

The invention relates to the technical field of water level monitoring and early warning, in particular to an intelligent reservoir spillway water level monitoring and spillway early warning system, which comprises an anti-interference water level sensing module, an anti-siltation sensing array is arranged on a key section of a spillway, and the key section comprises a curve section and a gate section; the dynamic hydraulic twinning module is used for processing through a lightweight fluid network algorithm on the basis of the water surface transverse slope, the absolute water level and the gate vibration displacement in combination with a hydraulic BIM model; the edge cloud cooperative flow calculation module comprises an edge node and a cloud server; the risk self-adaptive early warning module is used for executing early warning when the calibrated real-time spilling volume breaks through a spilling threshold value; according to the method, the flow calculation error under the high turbulence working condition is remarkably reduced, the accuracy of flood discharge amount calculation is effectively improved, and it is ensured that flood discharge control is more accurate especially under the scene that the curve flow state is complex and the gate opening degree changes remarkably.

A method and system for determining a limit scouring state of riverbed in downstream river channel of a reservoir group are provided. The method includes: collecting discharge data and cross-sectional prototype observation data of the downstream river channel of the reservoir group; establishing a correlation between discharge and a sediment carrying capacity indicator of a cross-section of a controlled hydrological station; calculating variation of the sediment carrying capacity indicator corresponding to dominant discharge; and determining and verifying the limit scouring state of the riverbed in the downstream river channel of the reservoir group. The method determines the limit scouring state of the riverbed in the river channel, and verifies the preliminary screening results based on the cross-section changes with the above determination, so as to provide technical support for mastering the development process of riverbed scouring and scouring trend prediction in the dam downstream river channel of the reservoir group.

The invention discloses a large-scale immersed tube tunnel silt squeezing simulation device and method, the large-scale immersed tube tunnel silt squeezing simulation device comprises a large-scale immersed tube model, a truss structure, a gear rack structure, two supports and a model groove, the truss structure is fixed on the top of the large-scale immersed tube model, and a balancing weight is placed on the truss structure; two sealing rubber strips are respectively arranged on the periphery of the large-scale immersed tube model; in the process of lowering the large-scale immersed tube model in the model tank, one end of the large-scale immersed tube model rubs with the side wall of the model tank to form a closed end, the other end of the large-scale immersed tube model forms a sludge discharge end, and an ultrasonic flow meter is arranged at the sludge discharge end; a stay wire displacement sensor is fixed on each bracket, two fixed ends are arranged at the top of the large-scale immersed tube model, and a fixed head of each stay wire displacement sensor is fixed on one fixed end; a gravel layer, a back-silting float sludge layer and a seawater layer are sequentially arranged in the model groove from bottom to top, and a sea groove slope model is arranged in the model groove.

The invention discloses a dam leakage detection method and system based on an unmanned aerial vehicle and deep learning. The method comprises the following steps: acquiring dam surface image data through the unmanned aerial vehicle carrying image acquisition equipment; preprocessing the obtained dam surface image data; performing feature extraction and fusion on the preprocessed image data based on a deep learning model to obtain a multi-modal coupling feature image related to the leakage area; performing target detection on the multi-modal coupling feature image to identify a leakage area; and carrying out spatial positioning on the identified leakage area to determine a positioning coordinate of the leakage area. Dam leakage is detected by combining the unmanned aerial vehicle technology and the deep learning algorithm, the automation and intelligence level of detection is improved, manual intervention and errors are reduced, and the detection precision and efficiency are improved.

The invention discloses a device for simulating influence of ditch cleaning ice cover evolution on hydrodynamic parameters and an application method thereof, and relates to the technical field of ice water dynamics and hydraulic engineering experiments. The device comprises a low-level water tank, a high-level water tank, a centrifugal pump, a flow valve, a water tank, a steady-flow perforated plate, a ditch cleaning ice cover simulation device, a first water level control grid plate, a second water level control grid plate and a flow field measurement system. According to the invention, three key parameters of ditch cleaning length, ice cover submerging water depth and roughness of the bottom of the ice cover are independently regulated and controlled, and non-contact high-precision measurement is carried out by means of a PIV technology, so that systematic and refined research on hydrodynamic parameters of an ice cover ditch cleaning area is realized. According to the method, researchers can safely and systematically research the influence of a single variable on the ice cover ditch cleaning water power at low cost, and the fundamental bottleneck of traditional field measurement in the research is solved.

The invention discloses a reservoir dam leakage intelligent detection device, and the device comprises a soil hardness detection module which is used for determining a detection point according to the axis of a dam and the type of a dam body filling material; the grid division module is used for dividing the corresponding region into grid structures with associated sizes through the soil hardness mean value of the same region; the detection strategy matching module is used for determining a leakage detection strategy corresponding to the grid structure according to the soil hardness; the leakage detection module is used for detecting the leakage flow velocity of each grid in the grid structure according to the determined leakage detection strategy and determining the leakage state of each grid according to the leakage flow velocity; and the prediction module is used for predicting the leakage state of the grid according to the historical leakage data to obtain the duration required for deterioration of the leakage state of the corresponding region. According to the method, grids are reasonably divided according to the hardness of soil, so that detection is more detailed and comprehensive, potential leakage points can be accurately found, and the precision and reliability of leakage detection are improved.

The invention relates to the technical field of fishways, in particular to a fishway local section model test method. The method comprises the following steps: S1, drawing up a preliminary design scheme of the vertical seam type fishway; s2, designing a fishway engineering local section physical model based on the preliminary design scheme; s3, carrying out a fishway local section model test, measuring and evaluating fishway parameters, and finding out standard exceeding fishway parameters and reasons for the standard exceeding of the fishway parameters; and S4, after the reasons in the S3 are improved, the steps S2 to S4 are repeated until all the fishway parameters meet the design requirements, and a pool chamber structure recommendation scheme is formed based on the fishway parameters. According to the fishway local section model test method, the fishway section model test is carried out, parameters exceeding the standard are found, then adjustment is carried out, a pool chamber structure recommendation scheme is formed, and a theoretical experiment basis is provided for enabling a pool chamber, located on the upper stream of an eel way, on a vertical seam type fishway to meet the migration requirements of eels and eriocheir hepuensis.

The invention discloses a deepwater bidirectional flow generation system, which relates to the technical field of pool flow field simulation and comprises a pool body and a bidirectional flow generation device. The bidirectional flow making device comprises a plurality of bidirectional flow making assemblies which are stacked in the depth direction of the pool body; the bidirectional flow making assembly comprises a plurality of circulating pipes; the plurality of circulating pipes are arranged in an array in the same horizontal plane perpendicular to the depth direction; each circulating pipe is connected with the pool body to form a circulating pipeline; a two-way water pump is mounted on each circulating pipe; and a steering flow guide structure is mounted at the corner position in each circulating pipe. According to the design, the problems of non-uniform flow field distribution and small effective area in a traditional mode are effectively avoided, and the same quality of flow fields in two directions can be ensured in bidirectional flow generation. And the steering flow guide structure is used for conducting flow guide at the corner position, and the problem of huge energy loss caused by a pressure perforated wall in a traditional mode is solved.

The invention belongs to the technical field related to hydrodynamic test, and discloses a towing tank water surface cleaning device which comprises a central measuring bridge movably connected to a trailer system and a water surface cleaning assembly connected to the central measuring bridge. The trailer system is used for driving the water surface cleaning assembly to move in the length direction of the towing tank through the central measuring bridge. The central measuring bridge is used for driving the water surface cleaning assembly to move in the depth direction of the towing tank so that the distance between the water surface cleaning assembly and the water surface of the tank can be kept at a preset value. The water surface cleaning assembly comprises a water pump arranged below the central measuring bridge, the water pump is provided with a water pump water outlet pipe, and the water pump is used for pumping water surface impurities in the towing tank and discharging the water surface impurities out of the towing tank through the water pump water outlet pipe. According to the invention, efficient cleaning is realized.

The invention relates to the technical field of wave absorbing devices, and discloses a method for designing a wave absorbing bank in a pool of a combined perforated plate and a wave absorbing device thereof, and the method comprises the following steps: measuring the length # imgabs0 #, the width # imgabs1 # and the water depth # imgabs2 # of an experimental pool, determining the maximum wavelength # imgabs3 # and the wave steep range generated by a wave maker, and determining the total length # imgabs5 # of the wave absorbing device according to # imgabs4 #, the length of the vertical perforated plate section is # imgabs7 #; a first-layer inclined perforated plate is arranged, a PVC perforated plate with the porosity of # imgabs 8 is adopted, the aperture of # imgabs 9, the plate thickness of # imgabs 10 and the installation angle of # imgabs 11 are determined through experimental optimization within the range of # imgabs 12, the rear end of a plate body is flush with the free liquid level, and the immersion depth of the front end of the plate body is # imgabs 13. The design method of the wave absorbing bank in the pool of the combined perforated plate and the wave absorbing device of the wave absorbing bank aim at solving the problems that in an existing pool wave absorbing technology, the wave absorbing bank is not compact enough in design, a large pool testing length is occupied, and the absorbing efficiency of non-linear large waves is poor.

The invention relates to the technical field of rapid dike rescue, in particular to a method for establishing a rapid blocking model for a dike breach, and the method comprises the steps: obtaining a water flow trend vector to determine a feature side slope, obtaining a side slope profile curve of the feature side slope, and determining a burst trend sub-vector based on a deformation feature point to determine a burst trend characterization vector; determining a breach deformation offset parameter and a breach deformation expansion parameter according to the comparison condition of the real-time burst trend sub-vector and the burst trend characterization vector so as to judge whether a breach contour prediction abnormal risk exists or not, determining a prediction error category of the breach contour loss in response to the existence of the breach contour prediction abnormal risk, and determining the breach contour loss prediction error category. According to the method and the device, the blocking model is established, and the acquisition optimization mode established by the model is determined, so that when the embankment breach appears, the deviation of the blocking model establishment is rapidly identified according to the actual form of the slope at the embankment breach, the acquisition optimization mode established by the model is adaptively adjusted, and the reliability of the rapid blocking model is improved.

The invention relates to a river and lake groundwater refilling coupling simulation method. The method comprises the steps of through water refilling riverbank zone refilling influence research, plain area refilling simulation and deep water source replacement simulation evaluation. According to the through water replenishing riparian zone refilling influence research, through a riparian zone hydrogeological conceptual model and a riparian zone numerical model, after model identification and verification, riparian introduction seepage quantity analysis and riparian zone refilling influence analysis are carried out; plain area back-filling simulation is based on a T-PROGS three-dimensional hydrogeological structure model, a typical area groundwater flow numerical model is established based on a U-Grid river channel grid encryption technology and river channel infiltration analysis of a fuzzy mathematical method, and groundwater back-filling effect analysis and groundwater over-mining treatment effect prediction analysis are carried out; in the deep water source replacement simulation evaluation, an underground water numerical model is firstly constructed, and then deep underground water replacement effect evaluation is performed, including overall evaluation of the influence of water source replacement on the underground water level and evaluation of the influence of water source replacement in different time periods on the underground water level.

The invention relates to the field of bank slope erosion and deposition tests, and discloses a test device for simulating a wharf bank slope erosion and deposition environment, which comprises a box body, a partition plate is mounted in the box body and is used for dividing the internal space of the box body, and an opening is formed in one side of the partition plate and is used for communicating the divided space; the bank slope model is mounted on the top surface of the partition plate; the driving mechanism is located at the top in the box body and used for driving a first motor to move, and the first motor is used for driving a shifting piece to rotate so as to shift water flow; and the flow guide mechanism is mounted in the middle of the top in the box body and is used for guiding the water flow direction and impacting the bank slope model. The driving mechanism drives the shifting piece to move downwards, the first motor drives the shifting piece to rotate, and therefore the water flow speed is increased; the flow guiding mechanism is used for distributing flow and adjusting the water flow direction, the scouring and deposition process of different water flows is accurately simulated, meanwhile, the erosion influence of the water flow angle on the bank slope can be simulated, and the accuracy of the experimental result is enhanced.

The invention provides a reservoir basin geomembrane and concrete toe board composite anti-seepage connecting structure and a safety monitoring method. The reservoir basin geomembrane and concrete toe board composite anti-seepage connecting structure comprises a concrete toe board, a GM-GCL composite anti-seepage connecting structure, a reservoir basin geomembrane and a special rolling area. Osmometers are arranged between the corrugated geomembrane and the GCL and below the GCL, and a safety monitoring meter is arranged at the position where the geomembrane is horizontally laid. The corrugated GM-GCL composite anti-seepage connecting structure is formed by the geomembrane and the GCL geosynthetic clay liner which are arranged in a corrugated mode, self-adaptive deformation is generated under the action of overlying water pressure by means of the telescopic characteristic of the corrugated GM-GCL composite anti-seepage connecting structure, and therefore the differential settlement difference between a concrete toe board and a reservoir basin foundation is coordinated, and the anti-seepage effect is achieved. Meanwhile, a special rolling area is arranged to improve the supporting capacity of the silty-fine sand filler and the transition layer below the composite anti-seepage connection structure, the problem that local connection of the anti-seepage geomembrane is damaged due to deformation discordance is effectively solved, and a leakage and deformation monitoring method of the corrugated GM-GCL composite anti-seepage connection structure is established; technical support is provided for concrete toe board and geomembrane anti-seepage connection design and a safety monitoring method in pumped storage power station reservoir engineering.

The invention discloses a device for testing the stress-seepage coupling anti-permeability characteristic of a dam foundation soil body of an anti-seepage wall. The device comprises a test box, a loading system, a seepage system and a monitoring system, a groove is formed in the wall of the test box and used for embedding the rigid diaphragm wall model, and the space between the groove and the diaphragm wall model is filled with a flexible water stop material to ensure sealing. The loading system is of a double-flexible-water-bag structure, and uniform vertical stress is applied to soil bodies on the two sides of the diaphragm wall. The seepage system applies hydraulic gradient from the water inlet end through the water supply device, so that water flow horizontally passes through the soil body and the diaphragm wall model. The monitoring system comprises pore pressure sensors arranged in an array mode and a water outlet surface vertical strip-shaped through hole observation window, and the pore water pressure distribution and the seepage damage phenomenon are monitored in real time. Through series innovative design, the limitation that only seepage model test can be carried out on the suspension type diaphragm wall dam foundation in the prior art is overcome, and a brand-new test platform is provided for researching a diaphragm wall dam foundation stress-seepage coupling anti-seepage mechanism.

The invention discloses a parallel control fish passing test platform, which belongs to the field of fishway engineering, and comprises a physical layer used for constructing n parallel fish passing channels with consistent bottom slopes, forming a shared entrance boundary at an upstream end and a shared exit boundary at a downstream end in sequence, and implementing a control test under a single variable condition; and the software layer is in communication connection with the physical layer and is used for carrying out initialization, boundary condition setting, real-time control, data acquisition, data processing and visual display on the physical layer. According to the test platform, simultaneous and synchronous test conditions are provided for the fish releasing test in the hydraulic model, it can be guaranteed that the operation working condition, the indoor environment and the feeding condition are the same in the fish releasing test research process, and the defects that migration behaviors are different due to the fact that ecological behavior characteristics of migratory fishes are prone to being stressed by the indoor environment are overcome; the fishway hydraulic model test result is perfected, and the fishway engineering design of the hydro-junction is guided.

The invention provides a navigation engineering simulation channel dredging device and a simulation method, and belongs to the technical field of channel dredging. A navigation engineering simulation channel dredging device comprises a shell and further comprises a channel simulation box, the channel simulation box is arranged in the shell and used for simulating a channel to be dredged, a sludge layer is laid at the bottom of the channel simulation box, and a telescopic pipe is arranged between the channel simulation box and the inner wall of the shell; the leveling assembly is arranged in the shell and is used for leveling a dredged sludge layer in the channel simulation box; the dredging assembly is arranged on the shell and used for dredging the sludge layer; the shell is provided with a moving mechanism used for driving the dredging assembly to move. By eliminating the interference of the water body on the sludge, the situation that the sludge is turbid in the water body and needs to stand for a long time is avoided, the core problems of low efficiency and non-visual data in a traditional simulation experiment are solved, and a high-fidelity and high-efficiency experiment tool is provided for channel dredging engineering.

The invention discloses a rectification system which comprises a plurality of unit modules used for arranging water flow into laminar flow, and the unit modules are arranged in a layered mode in the vertical direction. The invention further discloses a seabed sediment and underflow simulation device which comprises a flow generation system, a rectification system and an experiment pool which are communicated in sequence. The flow generation system pushes water to generate water flow, the water flow is sorted into laminar flow through the rectification system and then input into the experiment pool, and a seabed sediment simulation layer is laid at the pool bottom of the experiment pool. By arranging the unit modules, water flow can be arranged into laminar flow, so that the laminar flow is closer to real seabed underflow, and the simulation degree of the real seabed sediment plume diffusion process is improved. Meanwhile, the unit modules are arranged in a vertical layered arrangement mode and are horizontally arranged, so that water flow discharged by each unit module is located at different heights, and each path of water flow diffuses in the horizontal direction at different heights, mutual interference between different water paths can be effectively reduced, and turbulent flow and vortex are prevented from being generated again.

The invention relates to the technical field of channel development habitat protection and river environment reconstruction, in particular to a method for creating a sound scenic area suitable for a fish habitat by using underwater rockfill, which comprises the following steps: collecting river flow velocity, water depth and river curvature parameters through hydrographic measurement equipment; the method comprises the following steps: acquiring frequency spectrum and sound pressure level parameters of underwater radiation noise of a ship by using underwater acoustic measurement equipment, determining a water area meeting fish inhabitation and sound shielding requirements according to the parameters, and constructing a layered rockfill structure based on a natural river form. According to the structure, the microtopography and the continuous sound shadow area are arranged, the water flow condition is improved, interference of underwater radiation noise on fishes is effectively reduced, and therefore the fish habitat environment is recovered and stabilized.

The utility model belongs to the field of hydraulic model tests, and discloses a hydraulic model test flow stabilizing device which comprises a measuring weir, the inlet end of the measuring weir is connected with a measuring weir forebay, the outlet end of the measuring weir is connected with a terrain forebay, and the other end of the measuring weir forebay is internally connected with a water supply pipeline. And water in the terrain forebay enters the test terrain through the steady flow lattice wall. According to the utility model, the phenomenon of unstable inflow caused by unstable incoming flow in a hydraulic model test with a small required flow is improved.

The invention discloses a three-dimensional wave flow test harbor basin system, relates to the field of ocean infrastructure engineering test equipment, and aims to solve the problem that complex ocean conditions cannot be truly reproduced. The system comprises a wave making pool, a current making mechanism, a wave making mechanism, a wave absorbing mechanism and a crane mechanism, the flow making mechanism comprises a flow making pump, a flow outlet, a flow inlet and a circulation corridor, the flow outlet and the flow inlet are both communicated with the wave making pool and the circulation corridor, and the flow making pump and the circulation corridor are both located below the wave making pool; the wave making mechanism comprises a transverse wave making device and a longitudinal wave making device which are mounted in the wave making pool, the transverse wave making device and the longitudinal wave making device are respectively provided with an upper layer and a lower layer, and the transverse wave making device and the longitudinal wave making device are vertically arranged; the wave absorbing mechanism is circumferentially arranged and is adjacent to the inner side wall of the wave making pool; the crane mechanism stretches across the wave making pool and is used for hoisting an experimental model.

The invention discloses an experimental device for influence of tide and underground dam coupling on terrestrial source solute transport. The experimental device comprises a saline water tank, a sand tank and a fresh water tank, a variable-height overflow device is arranged in the saline water tank; the sand tank is communicated with the saline water tank through a saline water filter screen, an extractable water-stop sheet is arranged at the communication interval, the sand tank is filled with a porous medium, a slot is formed in the sand tank, an underground dam is arranged in the slot, the porous medium located between the underground dam and the saline water tank forms a lower slope towards the saline water tank, and a peristaltic pump is arranged above the lower slope. A terrestrial solute injection device is arranged between the underground dam and the fresh water tank, and a terrestrial solute solution is introduced into the porous medium; the fresh water tank is communicated with the sand tank through a fresh water filter screen, is connected with a fresh water supply device and is internally provided with an overflow pipe for adjusting the water level in the tank. According to the invention, the independent and coupling effects of the tide and the underground dam can be comprehensively considered, and the spatial and temporal distribution, retention and diffusion effects of the terrestrial solute can be observed.

The invention discloses a vegetation model and plastic blind ditch combined composite wave absorbing device which comprises a square supporting amplitude modulation frame, a lifting mechanism and a vegetation model. The square supporting amplitude modulation frame comprises a bottom support, a block-shaped plastic blind ditch plate arranged on the bottom support, two guide sliding rails arranged on the two sides of the top of the block-shaped plastic blind ditch plate correspondingly, and a porous net-shaped vegetation fixing grid arranged between the two guide sliding rails. A plurality of plug-in type grooves are formed in the porous net-shaped vegetation fixing grids, vegetation strips are inserted into the plug-in type grooves to form a vegetation model, one end of the bottom support is connected with the water tank, the other end of the bottom support is connected with the lifting mechanism, and the lifting mechanism is used for adjusting the angle between the square supporting amplitude modulation frame and the water tank. The vegetation model and the plastic blind ditch plate are combined, reflection waves are reduced through double wave absorption of the vegetation model and the plastic blind ditch plate, and the wave absorption effect is improved.

The embodiment of the application provides a landslide accumulation seepage hysteresis simulation test device, and relates to the technical field of simulation test devices. The landslide accumulation seepage hysteresis simulation test device comprises a transparent test box, a bedrock simulation piece and a water level simulation mechanism. The transparent test box comprises a box body and a box cover, the box cover is installed on the top of the box body, a groove is arranged on the slope surface of the bedrock simulation piece, a landslide body simulation piece is installed in the groove, and the water level simulation mechanism comprises a storage water tank, a first water pump, a first water inlet pipe, a first water outlet pipe, a connecting pipe and a drain pipe. The pressure of the first water pump can be adjusted according to requirements to simulate the rising rate of the water level, so that the state of the landslide body simulation piece can be observed. The second valve is opened, and the first water pump and the first valve are closed. The water source in the box body is discharged through the connecting pipe and the drain pipe, the water level falling rate in the box body is simulated, the state of the landslide body simulation piece when the water level falls is observed, and more test data can be obtained.

The application discloses a kind of mobile underwater layered hydraulic fill construction indoor simulation test method, comprising: step (1) by input module design key test parameters;Step (2) by input module setting water depth, speed and wave conditions;Step (3) by management module mixes uniform mud;Step (4) by management module starts first layer mobile hydraulic fill;Step (5) by management module completes first layer mobile hydraulic fill;Step (6) by management module repeats step (4)-(5);Step (7) by measuring system measures hydraulic fill test characteristic parameter;Step (8) clears up water tank test area silt. Various key construction parameters are adjusted, and multi-layer repeated mobile construction simulation technology is realized, which provides an effective means for in-depth study of high-precision layered hydraulic fill technology, improvement of construction efficiency and management quality.