15results about "Hydraulic models" patented technology

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.

The application provides a dam centrifugal test model reservoir water level controllable adjusting device and method, relates to the geotechnical centrifugal model test technical field, and includes a model box. An overburden dam model is arranged at one end in the model box. A placeholder box is arranged at the end away from the overburden dam model in the model box. A guide positioning mechanism is fixedly installed at the bottom end of the model box. When the hydraulic actuator is started and frequently lifted or lowered, the generated vibration is transmitted to the elastic connecting mechanism. The support of the first support platform in the elastic connecting mechanism is matched with the second buffer platform, the second buffer spring and the elastic damping of the movable connecting rod, and the fine adjustment of the third working platform and the precision guide rail pair. The high-frequency vibration transmitted by the hydraulic actuator under high g value is significantly inhibited, water level fluctuation distortion is avoided, and the reliability of test data is improved.

This invention belongs to the field of hydraulic model technology, and particularly relates to an inlet / outlet hydraulic model, comprising: a reservoir body as a fixed container; perforated bricks set inside the reservoir body as the base filling of the model; variable modules as the framework of the steep slope of the model; PVC plastic pipes forming the framework of the gentle slope of the model; plastic flexible sheets laid on the surface of the variable modules and PVC plastic pipes; and rubber sheets bonded to the outer layer of the plastic flexible sheets. This application adopts modular component assembly, eliminating disposable consumables such as cement and sand, making model construction simpler and laying the foundation for green recycling and efficient production.

The application discloses a kind of compartmentalization type wave overtopping measurement method and measuring device.The device includes a plurality of cascaded measurement cabin, each measurement cabin is divided into front pool and rear store by the partition with communication hole, wave height instrument is arranged in rear store.The method includes: obtaining the water level data of rear store;Based on the time rate of change of water level data and the preset partition hydraulic transfer function, the instantaneous total amount of water storage of measurement cabin is determined;According to the time rate of change of instantaneous total amount of water storage, the instantaneous wave overtopping flow entering measurement cabin is obtained by inversion;Based on the time distribution characteristics of instantaneous wave overtopping flow, single-wave wave overtopping event is identified and single-wave wave overtopping volume is calculated.The application solves the contradiction between large-capacity trapping and high-precision single-wave trapping by the combination of physical compartmentation and algorithm inversion, and realizes the synchronous measurement of average wave overtopping and single-wave maximum wave overtopping.

The present application belongs to the technical field of anti-flood door test equipment, and particularly relates to a water circulation type anti-flood door test cabin device and method. The device comprises a test cabin body, a mounting opening is formed in the front of the test cabin body, and an anti-flood door is mounted on the mounting opening; a water passage opening is formed in the top of the test cabin body, and a plurality of backwater holes are formed in the bottom of the test cabin body; a water storage tank is fixedly installed on the top of the test cabin body, and a water storage tank is fixedly installed on the bottom of the test cabin body; through cooperation of the water storage tank, the water storage tank, the drainage pipe mechanism and the water pumping pipe mechanism, the use of the anti-flood door under different conditions can be simulated, so that the anti-flood door can be quickly and fully detected, the required energy consumption is low, and the anti-flood door can be reused; through structural cooperation of the swing mechanism and the water closing mechanism, the water storage tank can not only ensure water storage without water leakage, but also quickly and fully simulate different water impact test conditions, and the silt can be conveniently removed.

The utility model discloses a gravity impact simulation experiment quick -open type gate, including the water storage pool, the upper end of water storage pool is provided with the bearing frame, the side of water storage pool is provided with the gate, the inside of bearing frame is provided with the counter weight, the inside of bearing frame is provided with the fixed base, the bottom fixedly connected with the boom of fixed base, the one end of boom is provided with the fixed clamp away from fixed base, the top of counter weight is connected with the cable. The utility model provides a gravity impact simulation experiment quick -open type gate, is realized to the water flow's accumulation in the inside of water storage pool through setting counter weight cooperation gate, realizes the water storage in the inside of water storage pool after the plugging of gate, is released to the water in the inside of water storage pool through the gravitational potential energy of counter weight drop and drives the gate instantaneous overturning, can simulate the impact of debris flow, and this kind of mode can greatly reduce the experiment space, can simulate the real impact effect of debris flow in shorter distance.

The application relates to the technical field of hydraulic engineering, and provides a negative-carbon ecological embankment and a construction method thereof, wherein the method comprises the following steps: based on undisturbed soil, a carbon-fixing medium and a curing agent, a negative-carbon matrix is configured; the negative-carbon matrix is layered and laid on an embankment structure layer, and a root guiding device is filled in the negative-carbon matrix, so that an embankment composite revetment is constructed; target vegetation is planted on the embankment composite revetment, so that the root system of the target vegetation is guided to grow to a deep area of the negative-carbon matrix by the root guiding device, a root-soil composite body is formed, and the construction of the negative-carbon ecological embankment is completed; the defects that the traditional ecological embankment is weak in structure and is completely dependent on natural vegetation, leading to insufficient stability, are effectively solved; not only can the thickness of a surface hard revetment be greatly reduced by using root system mechanics to compensate for the thickness, so as to optimize the engineering construction cost, but also a feasible solution is provided for constructing a green and resilient embankment which takes into account flood safety and ecological system continuity.

The application discloses a kind of assembled multifunctional exposure test platform under marine environment, including an exposure test platform structure building being built by multiple materials in real sea area, provide a material exposure test platform and the platform beam, plate, column structure as exposure main body carry out marine environment exposure test.Exposure test platform exposure site is divided into atmospheric zone, tidal zone and underwater zone;Different components are placed on the plate of atmospheric zone, plate of tidal zone and plate of underwater zone to carry out exposure test;Through pre-embedded fiber grating sensor in roof, bottom plate, column structure, platform plate is arranged with temperature and humidity sensor, ultrasonic wind speed and direction instrument, optical rainfall sensor and other methods, the whole domain, full-time, multi-information monitoring of environmental temperature, humidity, chloride ion concentration, concrete stress-strain, steel strain, material corrosion rate is realized.Through the exposure test platform disclosed by the application, long-term monitoring data of actual marine environment exposure test of various structures and materials can be obtained, which is used for analyzing the corrosion law of various structures and materials in different marine environment regions, and then the durability of marine environment building structure is improved and enhanced.This is of great significance to the further development and utilization of China's ocean, the development of corrosion and protection technology of marine engineering structure.

The present application provides a kind of ecological concrete repair method of ditch slope, it is related to ecological restoration engineering field.The present application uses the closed-loop optimization technical path based on sample slope first test, monitoring and data feedback, to solve the problems of poor ecological restoration effect and poor long-term stability caused by the difficulty of high strength and high porosity, high alkaline environment inhibiting plant growth and construction parameters relying on experience in the existing ecological concrete slope protection technology.The plant growth data, concrete porosity and environmental data are obtained by construction and monitoring on small-scale sample slope, and the plant seed ratio and concrete pH regulator dosage are optimized, and the optimized scheme is applied to actual engineering slope.The present application improves the pertinence, success rate and predictability of the repair scheme, improves the plant survival rate and vegetation coverage, and realizes the on-site verification and precision decision of the repair parameters.

The present invention provides a system and method for generating tsunamis with a reversible flow under laboratory conditions. The system includes an elongated simulation channel having a first side region, a second side region, and a measurement region located between the first side region and the second side region, a first bottom gate and a second bottom gate configured to selectively control first and second fluid outlets from the elongated channel by opening and closing them, a first pop-up gate and a second pop-up gate respectively disposed within the first side region and the second side region, at least one fluid drive pump, flow measurement and control means, a fluid circulation line including a main fluid line, a first fluid inflow line within the first side region, and a second fluid inflow line within the second side region, and a control system.

The present application relates to the technical field of river model experiment, and discloses a fine river model uniform sand adding experiment device, which comprises a sand adding groove, a plurality of sand discharge holes are formed in the bottom end of the sand adding groove along the axial direction; an adjusting part is arranged in the sand adding groove, the sand adding width of the sand adding groove is adjusted by moving the adjusting part in the sand adding groove; a sand adding assembly comprises a sand adding unit and a moving unit, the moving unit is slidingly connected to the top end of the sand adding groove, the sand adding unit is arranged on the moving unit and is used for conveying water and sand mixture into the sand adding groove; a control part is arranged on the sand adding groove, and the control part is used for controlling the reciprocating movement of the moving unit at the top end of the sand adding groove. The present application combines mechanical structure and automatic control, realizes the uniform distribution of sand amount in space during the sand adding process, effectively solves the problems of non-uniform sand adding, easy blockage and low adjusting precision of the traditional device, and significantly improves the reliability and scientificity of the river model experiment.

This invention relates to a construction method for an arched flexible revetment system for waterways, belonging to the field of ecological revetment technology. The method includes: stacking mulberry straw within an inverted U-shaped thin steel reinforcement frame and compressing it; after reaching a predetermined height, bending the protruding vertical steel reinforcement to the opposite side to form straw bundles; sawing both ends to form limiting mating surfaces; driving wooden piles, forming two planar overlapping surfaces on their soil-facing side; driving trapezoidal cross-section wooden piles with narrow faces facing the soil between adjacent wooden piles; and filling the straw bundles between the wooden piles to form an arched structural unit protruding towards the soil-facing side. Preferably, geotextile is laid on the overlapping surfaces, limiting nails are driven in, and anti-slip wooden strips are driven on the water-facing side of the straw bundles. This invention utilizes the "compression instead of bending" advantage of the arched structure, significantly improving load-bearing capacity and reducing structural deformation; the multiple node constraint mechanism effectively solves the problem of brittle instability caused by easy slippage and detachment of straw-based flexible revetments, enhancing structural ductility and safety reserves.

The utility model discloses a dike simulation scour test water tank device of variable top angle of attack, include: water tank, one end sets up water inlet connection water supply unit, the other end sets up water outlet connection backwater, and the water tank is close to the sand trap of setting the water outlet end on, and the block is set up in the water tank inside, and is located between the water inlet and sand trap, and the side of face A of close water inlet sets up the opening, and has the cavity in, and the model dike is placed in the cavity, the block can rotate in the water tank, with the adjustment water flow top angle of attack, camera, set up in the water tank outside, to shoot the breach process of dike when different water flow top angle of attack. The utility model can solve the problem of the limitation of the existing dike scour test device top angle of attack adjustment, the limitation of observation visual angle misalignment.

The application discloses a device, system and method for dredging simulation of a dredger, and belongs to the dredging technical field.The device for dredging simulation of a dredger comprises a base, a simulation water tank, the simulation water tank comprising a bottom plate, flexible metal side plates and baffles, the bottom plate being fixedly arranged on the top of the base, the flexible metal side plates being arranged symmetrically along the width direction of the bottom plate, and the baffles being arranged symmetrically along the length direction of the bottom plate; a support frame is arranged between the base and the support frame, and a first elastic telescopic rod is arranged between the base and the support frame; the support frame is fixedly provided with an adjusting assembly for adjusting the shape of the flexible metal side plates; the shape of the simulation water tank can be adjusted according to the actual dredging channel situation, so that the influence range of the actual channel dredging can be accurately predicted and evaluated, the correct dredging mode and dredging treatment scheme can be selected, and the simulation dredging progress can be improved and the simulation dredging cost can be reduced without separately manufacturing a water tank model before channel dredging each time.

This invention relates to the field of water conservancy and hydropower engineering, and particularly to a method for assessing the ecological water requirement of mangrove plants. The method includes: selecting the *Prunus mume* species with the highest area proportion in the mangrove community as the target species within a target area; determining the habitat requirements of the target species during sensitive growth and development stages, and selecting factors sensitive to flow rate changes as habitat suitability indicators, including salinity and immersion time; constructing a three-dimensional temperature-salinity coupled hydrodynamic model, including three-dimensional hydrodynamic control equations, temperature transport control equations, and salinity transport control equations, to simulate the salinity and immersion time in the target species' distribution area under different flow rate conditions; and based on the simulated salinity and immersion time results, combined with a pre-set threshold range for habitat suitability indicators, using the flow rate corresponding to the upper limit of the threshold range as the ecological water requirement of the mangrove plants.