418results about "Hydraulic models" patented technology

The invention relates to a pier damage early warning analysis method under the action of flood, and solves the technical problems of high disaster recognition cost, low bridge damage recognition precision, untimely early warning and alarming and the like based on monitoring equipment in the existing concrete bridge flood-disaster-resistant technology. According to the method, by means of an established plastic damage simulation model, expensive sensors do not need to be arranged on a bridge structure, only basic information of the bridge structure and flood information such as the flow speed, the water level and the scouring depth are obtained, and damage and failure analysis of the bridge pier structure under the action of different influence factors by the flood action can be studied; structural damage state qualitative analysis and modal integrity damage index quantitative analysis are combined to determine bridge pier structure damage grades and damage failure judgment criteria, and early warning values corresponding to different damage grades of a bridge pier are inverted, so that accurate damage identification and rapid grading early warning of the bridge pier structure under the flood effect are realized. The flood disaster resistance of the bridge structure is improved, safe operation of the bridge is guaranteed, and the service life of the bridge is prolonged.

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 discloses a reservoir ecological scheduling method integrating fish spawning and foraging demands, and the method comprises the steps: determining a scheduling target river reach based on the fish inhabiting and breeding habitat feature information and spawning site distribution information of a to-be-researched reservoir region; constructing a hydrodynamic model according to the dispatching target river reach; acquiring first hydrological demand information for scheduling the target fishes to lay eggs in the breeding season and second hydrological demand information for scheduling the target fishes to find food in the non-breeding season; on the basis of a hydrodynamic model, the first hydrological demand information and the second hydrological demand information, determining the ecological flow discharged by the reservoir; determining reservoir water level regulation and control information based on the water level change demand information for scheduling the target fishes to spawn in the breeding season and foraging in the non-breeding season; and performing reservoir ecological scheduling according to the reservoir discharged ecological flow and the reservoir water level regulation and control information. According to the technical scheme, the adverse effect of reservoir dispatching operation on fish oviposition and foraging can be relieved, and fish resource recovery and biodiversity protection are facilitated.

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 relates to the technical field of underwater dredging construction. The underwater dredging construction method comprises the steps that environment information of a to-be-constructed area is obtained, the environment information is input into a sludge physical property model, sludge physical property information is obtained, the sludge physical property information is compared with a preset sludge standard value, a comparison result is obtained, and the sludge type is determined based on the comparison result. And selecting a sludge construction mode corresponding to the sludge category based on the sludge category, adjusting working parameters of the construction equipment according to the sludge construction mode, and after the working parameters are adjusted, executing dredging construction until the dredging task of the to-be-constructed area is completed. The method has the effects of improving the construction efficiency and reducing equipment damage.

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'fine flushing and coarse supplementing 'type riverbed substrate habitat restoration method and system for a small hydropower station quit river reach, and relates to the field of ecological restoration, and the method comprises the steps: obtaining the hydrologic and geomorphic information of the implemented small hydropower station quit river; key habitat area distribution in the river reach influenced by small hydropower station quitting is determined according to hydrological and landform information, and the matrix particle size condition of the key habitat area and the part and thickness of water flow scouring and silting are determined; determining a riverbed substrate habitat restoration scheme (including pebble supplement, boulder group arrangement, ecological spur dike arrangement and ecological water guide barrage arrangement) by combining the key habitat restoration layout map; simulating the restoration effect based on the riverbed substrate habitat restoration scheme and the hydrodynamic sediment transport model, and adjusting the riverbed substrate habitat restoration scheme according to the simulation result to obtain the optimal riverbed substrate habitat restoration scheme. According to the method, the damaged river reach of river degradation caused by small hydropower station quitting can be recovered, and the natural landform state of the river is recovered.

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 rapid and accurate riprap damming method under a large water depth, relates to the technical field of water conservancy projects and underwater construction, and solves the problems that the construction efficiency can be improved due to the fact that water riprap is often adopted under the large water depth (more than 40 meters) and a complex flow state, but stones are prone to drifting in the sinking process, and the construction efficiency is affected. Therefore, the device cannot be accurately placed at a preset position. On one hand, the stability and construction quality of a dam body structure are affected, and on the other hand, a large amount of stone is wasted. Combined positioning (dynamic positioning system + anchoring), sonar equipment and a holder control sub-module are introduced, the drifting distance is calculated through an intelligent algorithm, the arm length and angle of the floating crane are adjusted in time, and it is ensured that stones are accurately immersed to the preset position. According to the method, the positioning precision and the construction efficiency in the riprap process can be remarkably improved, materials can be saved, and the method is suitable for the fields of water conservancy projects, ocean engineering, channel improvement and the like and has wide application prospects and remarkable economic benefits.

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 utility model discloses a tension wire pontoon water tank for operation and maintenance, and relates to the technical field of dam displacement tension wire monitoring. The protection box comprises a protection box body, a protection box cover is installed on the top face of the protection box body in a hinged mode, a water tank assembly is arranged at the bottom of the inner side of the protection box body, and a magnetic attraction handle is arranged on one side wall of the water tank assembly. Under the action of the floating pontoon, water cannot enter the floating pontoon under transient accidental disturbance, the floating pontoon can automatically recover and leave the floating pontoon after the disturbance is removed, the floating pontoon can automatically move and stretch out and draw back, the distance between the floating pontoon and the bottom of the floating pontoon can be adjusted to be long, the free movement of the floating pontoon is prevented from being limited by the limiting rod under the normal condition, reading cannot be influenced, and the working efficiency is improved. In the daily patrol process, patrol personnel pass by the device and can press one side of the pontoon by hand to observe whether the margin of downward rotation still exists or not, and if not, water vapor in a cavity of the pontoon is liquefied, and the pontoon needs to be dismantled to remove distilled water.

The invention relates to the technical field of water conservancy projects, in particular to a J-shaped side groove spillway structure with a backflow type energy dissipation structure, which comprises an arc-shaped side groove overflow weir, an arc-shaped side groove bottom plate, an arc-shaped side groove side wall, a 7-shaped energy dissipation top plate, a trapezoidal energy dissipation pier, an arc-shaped side groove upstream retaining wall, a discharge chute front adjusting section and a discharge chute section, the upstream end of the discharge chute front adjusting section is tangent to the arc-shaped side chute, the 7-shaped energy dissipation top plate is located on the top of the side chute side wall, the J-shaped arrangement can well adapt to steep bank slope terrains, the overflow front edge length is increased while excavation of a high slope is avoided, and the discharge amount of the side chute spillway is increased. The brand-new 7-shaped energy dissipation top plate backflow type energy dissipation structure can effectively reduce the depth of the side groove and reduce the height of the side wall of the side groove on the backing side, energy is counteracted after returned water flow and water flow discharged by the arc-shaped side groove overflow weir face each other, the effects of dissipating energy and adjusting the flow state of water flow out of the groove are achieved, bias flow of the water flow out of the groove is avoided, and the service life of the water flow is prolonged. And water flow can enter the discharge chute more smoothly.

The invention provides an experimental device and method for simulating spontaneous burst of a dam part, the experimental device comprises an experimental water tank, the experimental water tank is supported and mounted at the top of a water tank bracket, a dam body is arranged in the experimental water tank, and a plurality of breaches with different shapes and sizes are formed in the dam body through cutting. A breach-shaped body used for temporarily plugging the breach is correspondingly arranged at the position where the breach is located; a tongue-and-groove seam is formed in the inner side wall of the experimental water tank, and the position where the tongue-and-groove seam is located is used for installing a blasting glass sheet; the water inlet end of the experimental water tank is provided with a reservoir, the reservoir is provided with a gate, the water outlet end of the experimental water tank is provided with a ground reservoir, and the top of the experimental water tank is provided with monitoring equipment for monitoring the experimental process. According to the device and the method, single-point and multi-point instantaneous spontaneous burst of the dam can be simulated, the shape and the size of a breach and the burst position can be self-defined, and the device and the method are applicable to experimental devices of water tanks with various sizes so as to solve the problems and defects in the prior art.

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.