144 results about "Water simulation" patented technology

The present invention relates to an urban underground engineering simulation test system, underground water simulation system and data acquisition system, in which the simulation box contains horizontal loading plate, horizontal loading device, vertical loading device and several layers of horizontal water inlet pipes. Said invention can implement three-dimensional simulation test of various urban underground railway engineering, tunnel and anderground cave engineering, ground base an foundation work, special underground construction method, side slope engineering and retaining wall engineering, etc.

The invention relates to a stratum grouting simulation system, comprising a model load box (2) for containing rock soil, a loading subsystem (3) for loading the rock soil from the top end so as to restore an underground stress field environment, an underground water simulation subsystem (4) for controllably injecting water to the rock soil and discharging the water from the rock soil so as to simulate still water and dynamic water environments, a grouting subsystem (5) for grouting into the rock soil, a data acquisition subsystem (6) for measuring stress, strain and displacement data of the rock soil, and an alarm subsystem (7) for measuring deformation of the model load box (2), pressurizing pressure and grouting pressure and with an alarm function, wherein the side wall of the model load box (2) is provided with a detachable wall plate. The stratum grouting simulation system is lower in cost, and capable of simulating an excavation process, a deeper underground environment, dynamic water and vadose environments.

A system and method for shallow water simulation may provide a framework for solving General Shallow Wave Equations (GSWE) to efficiently simulate 3D fluid effects on arbitrary surfaces using a height field representation. The height field representation may include height columns constructed along surface normals, which may be dependent on a condition of boundary cells adjacent to fluid cells and/or artificial viscosity effects. The framework may provide implicit schemes for solving for the effects of external forces applied to the fluid, including gravity and surface tension, and explicit schemes for solving for advection effects. The system and method may be implemented on general-purpose CPU(s) and/or GPU(s) and may be capable of simulating a variety of fluid effects including: waves, rivulets and streams, drops, and capillary events. In some embodiments, the system and method may achieve real-time fluid control and fluid shape design through user-interaction (e.g., in a graphical painting application).

The invention discloses a method and system for forecasting urban accumulated water by means of rainfall forecasts. The method comprises the steps that rainfall forecast information of a target city is obtained by means of a data interface of a meteorological department, and the rainfall forecast information is converted into rainfall duration data; simulation computation is conducted on surface runoff in the rainfall process and the drainage process according to the rainfall duration data and by combining urban drainage pipe point and pipeline data and geographical information data, and running status data of a drainage pipe network in the drainage process is obtained; calculation is conducted on the water accumulation process by means of a multi-source non-single depression accumulated water simulation method according to the running status data of the drainage pipe network and combination with surface elevation information, raster data of one surface accumulated water depth is correspondingly obtained by conducting calculation on each rainfall time step, all the raster data of the surface accumulated water depths of the whole rainfall duration process are obtained, and the surface accumulated water information data of each preset time is obtained, wherein the accumulated water information data comprises but not limited to the position, depth and range of surface accumulated water.

Embodiments of the present invention provide a novel method and discretization for animating water waves. The approaches disclosed combine the flexibility of a numerical approach to wave simulation with the stability and visual detail provided by a spectrum-based approach to provide Eulerian methods for simulating large-scale oceans with highly detailed wave features. A graphics processing unit stores a one-dimensional texture referred to as a wave profile buffer that stores pre-computed results at a number of discrete sample points for performing wave height evaluation. The water surface is rendered according to water height values computed using the wave profile, accounting for advection, spatial diffusion, angular diffusion, boundary reflections, and dissipation.

The invention provides a real-time shallow water simulation method, which comprises the following steps of: simulating optical property of water wave surface to obtain a simulated water wave real-time fluctuation effect diagram; setting a simulated water surface network lighting model to obtain the simulated water surface network lighting model; and carrying out illumination rendering to the simulated water wave real-time fluctuation effect diagram by using the water surface network lighting model to obtain a simulated water wave real-time illumination fluctuation effect diagram. The method can realize water wave effects such as water real-time reflection, water real-time refraction, water real-time fluctuation and the like by simple calculation only.

The invention discloses a ground fracture test device and a method for simulating fracture dislocation and underground water change. The device comprises a test model box, a fixed platform and a movable platform, a dislocation adjusting mechanism is arranged at the bottom of the moving platform; a first bottom plate, a first waterproof plate and a first water stop plate are sequentially arranged on the fixed platform from bottom to top, a second bottom plate, a second waterproof plate and a second water stop plate are sequentially arranged on the movable platform from bottom to top, and the dislocation adjusting mechanism comprises a support, a jack and a sliding limiting component. The method comprises the following steps: 1, performing preparation before a test; 2, laying a model soil layer in the model box, burying a sensor and connecting the sensor with a data acquisition instrument; 3, injecting water into the model soil layer; 4, simulating soil layer fracture dislocation of thesimulation model; and 5, simulating underground water level change by model soil layer drainage. The device can simulate the development condition of the ground fissures under the conditions of fracture dislocation and underground water change, and is high in simulation accuracy.

The invention discloses a non-contact type pollutant concentration diffusion detection system and method. A device part comprises a water-groove still water simulation device, a jet flow simulation device and a camera. The water-groove still water simulation device comprises a water storage box, an experiment water groove, a first constant-flow pump, a first flow guiding channel, a second flow guiding channel, a third flow guiding channel, an overflow channel, a valve, a flow weir plate, a support, a waste liquid collecting box, a water barrel and an LGY-II propeller-type current meter. The jet flow simulation device comprises a liquid storage box, a fourth flow guiding channel, a rotor flow meter, a flow control valve, a T-type porous diffusion device and a jet flow pipe. The non-contact type pollutant concentration diffusion detection system is simple and reasonable in structure, high in generality, convenient to maintain and capable of simulating the concentration diffusion of water body pollution under external conditions; a low-cost free-pollution chemiluminescence reagent is used for replacing an existing fluorescent solution to determine the concentration field of pollutant discharging, the requirement of the device is lowered, and energy is saved.

One embodiment of the present invention sets forth a technique for computing two-way rigid body coupling in a two-dimensional height field simulation, such as a shallow water simulation. Coupling from a rigid body to a fluid is computed using fluid displacement of the body in each grid cell. The body is projected onto a simulation plane to determine which grid cells are covered by the body. Fluid displacement from the body is computed for each grid cell based on displacement within a corresponding vertical column of fluid. Fluid displacement is distributed to neighboring grid cells prior to a height field computation. Coupling from the fluid to the rigid body is computed by integrating forces imparted on the body by the fluid at each grid cell. The integrated forces are used to compute a new position for the body in a subsequent simulation time step.

The invention discloses a multi-factor coupling test system for researching an instability failure mechanism of a foundation pit and a side slope, and relates to the technical field of research test devices for the instability failure mechanism of foundation pit and side slope engineering. A transparent observation area is arranged on a side panel of a model test box, and a foundation pit or side slope model is arranged in the model test box; a vibration simulation system can apply vibration in the vertical direction and/or the horizontal direction to the model test box; a rainfall simulation system can simulate rainfall in the model test box; an underground water simulation system can inject confined water and/or diving water into the foundation pit or side slope model; a loading system can apply a load to the model slope crest; a temperature control system can control the temperature of the foundation pit or side slope model; and a test system can monitor and collect technical parameters in the soil body in the simulation test process. According to the invention, simulation test research on the deformation and failure process of the foundation pit or the side slope under the multi-factor coupling effect can be carried out, and a reliable basis is provided for stability evaluation and reinforcement treatment of the foundation pit or the side slope.

The invention discloses a device for detecting running water type in frozen soil based on a tracing technology. The device comprises a rainfall simulation device, an earth-pillar simulation device, an underground water simulation device, a refrigerating device and a heating device, wherein the rainfall simulation device is used for making a tracing agent solution leak into a test undistributed soil column in an artificial rainfall way; the earth-pillar simulation device comprises an organic glass cylinder body, the test undistributed soil column and a sand gravel layer which are positioned in the organic glass cylinder body; a geotechnical cloth is placed between the test undistributed soil column and the sand gravel layer; a plurality of collection holes are formed on the test undistributed soil column at different heights and the bottom; a water collection slot is formed on the bottom of the organic glass cylinder body; the underground water simulation device comprises a constant head device and a conduit; one end of the conduit is connected with the constant head bottle, and the other end is connected with the sand gravel layer of the earth-pillar simulation device; the tracing agent solution is lifted and supplied to the test undistributed soil column through a capillary tube.

The invention provides a slip zone soil rheological test instrument and a slip zone soil rheological test method, and relates to the field of soil measurement of slip zone soil, the slip zone soil rheological test instrument includes a test box, a shear system, a reservoir water simulation system and a measurement dynamic control system, the reservoir water simulation system comprises a water conveying circulation device and a water seepage component, the shear system includes a first shear box, a second shear box, a normal propulsion device and a shear propulsion device, the water seepage component is connected with both ends of the first shear box and the second shear box, and respectively connected with the first shear box and the second shear box, and the water conveying circulation device is connected with the water seepage component, and is used to convey test water to the water seepage component. Compared with the prior art, the slip zone soil rheological test instrument can measure the long-term strength of landslide-slip zone soil under long-term water immersion and dynamic osmotic pressure conditions, and has the advantages of simple measurement method and accurate data.

The invention discloses a multifunctional slope model test device, which comprises a model box and an underground water simulation system. The model box comprises a metal frame, and a bottom plate, apair of transparent plates and a pair of baffle plates which are arranged on the metal frame; the underground water simulation system comprises a side water injection tank, a side water permeable plate, a bottom water injection tank, a bottom water permeable plate, a booster pump and a water conveying pipe, wherein a plurality of overflow ports are formed in the baffle close to the lateral water permeable plate from top to bottom, a plug body is arranged at one overflow port, a water outlet is formed in the bottom plate, and the overflow ports, the lateral water permeable plate and the water outlet belong to a lateral water injection tank. The underground water simulation system provided by the invention can be combined with a rainfall system and the like to realize a multifunctional testand obtain more comprehensive data.

The invention discloses a reservoir area ice dam damming simulation method based on a simplified Saint-Venant equation set. The reservoir area ice dam damming simulation method comprises the steps: S1, determining an ice dam forming period; s2, determining the occurrence position of the ice dam; s3, determining a reservoir capacity curve required by ice dam damming calculation; s4, calculating thewarehousing ice amount and the geometrical morphology; s5, determining a discharge curve required by ice dam damming calculation; for different flow levels, considering the water blocking area of theice dam to obtain the ice-water mixing area under the flow, and back calculating the water level according to the section form to obtain the flow relationship of the water level or the ice level, namely the discharge curve of the section; and S6, performing ice dam flood regulation calculation based on the simplified Saint-Venant equation set. According to the method, under the condition of limited data, the problem that the ice dam occurrence position depends on actual measurement data is solved by utilizing the incidence relation between the reservoir area water level in front of the dam and the reservoir tail ice dam occurrence position and judgment indexes. The section discharge capacity of the head section of the ice dam is analyzed through section hydraulic factors, and the problemof section ice passing capacity determination is solved.

The embodiments of the present invention provide a cold water simulation anti-corrosion system inside a high-voltage direct-current converter valve. The system includes a thyristor, a cooler, a voltage equalizing electrode, a circulating water pump, an expansion water tank, and a controller; the cooler is communicated with the voltage equalizing electrode and the circulating water pump through a pipeline, so that a circulation pipeline can be formed; the circulation pipeline is connected with the expansion water tank; a detection instrument for detecting the concentration of ethylene glycol indeionized water in the circulation pipeline is arranged in the expansion water tank; a liquid adding device used for adding an ethylene glycol solution to the expansion water tank is arranged in theexpansion water tank; and when the current concentration of the ethylene glycol in the deionized water is lower than a preset threshold, the controller controls the liquid adding device to add the ethylene glycol solution to the expansion water tank according to the current concentration of the ethylene glycol and the amount of circulating water. The system provided by the present invention is ofstructural simplicity. According to the system, the ethylene glycol is added to the deionized water, so that the metal corrosion of the cold water system in the high-voltage direct-current valve can be effectively suppressed, and a basis can be provided for solving the problem of the metal corrosion of an inside-valve cold water system in actual production.

The invention discloses a device and a method for testing the thickness of an outburst prevention layer for water inrush of a tunnel. The device comprises an underground water simulation device, a tunnel model, a simulated surrounding rock test box, a sensor, a data acquisition device, and a water and mud collection device; the underground water simulation device comprises a water source tank, a water pump, a water pipe and a gathered pressure water tank which are sequentially connected with one another; the gathered pressure water tank is connected with one end of the tunnel model, the otherend of the tunnel model is connected with the simulated surrounding rock test box, a plurality of partition plates, a stress detection unit and a simulated surrounding rock prepared from a similar simulating material are arranged in the simulated surrounding rock test box, the stress detection unit monitors and simulates the stress, the strain and the seepage parameter of the simulated surroundingrock, and the simulated surrounding rock breaks to simulate the water inrush when the pressure of the gathered pressure water exceeds the loading limit of the simulated surrounding rock; the water and mud collection device collects the burst water and mud after the simulation of water inrush; the sensor and the data acquisition device acquire the pressure and the flow of the supplied water flow.

The invention discloses a large boiler installation method based on the BIM technology. The large boiler installation method based on the BIM technology comprises the following steps that structural professional and electromechanical professional BIM modeling is conducted according to user requirements and an obtained basic model, and a three-dimensional model of a large boiler is obtained; performing collision detection on the three-dimensional model to generate a collision detection report, performing arrangement design on boiler pipelines according to the collision detection report, and optimizing the three-dimensional model to obtain a three-dimensional simulation model of the large boiler; importing the three-dimensional simulation model of the large boiler into visual analogue simulation software; according to the actual installation sequence of the boiler, tasks of all stages are set, installation procedures and construction simulation are carried out, pressure testing and waterfilling simulation is carried out on the generated pipe network model, the installation sequence is determined, and installation construction of the large boiler is completed according to the installation sequence. The large boiler installation method based on the BIM technology is high in construction efficiency and low in construction cost.

The embodiment of the invention provides a bedding rock slope simulation test device under the coupling effect of rainfall and underground water, and relates to the technical field of rock slope simulation devices. The bedding rock slope simulation test device under the coupling effect of rainfall and underground water comprises a supporting frame body mechanism, a mold body mechanism and a rainfall simulation mechanism. The supporting frame body mechanism comprises a bottom plate, a supporting frame and a fixing plate, the supporting frame is installed at the top of the bottom plate, the fixing plate is fixedly arranged at the top of the supporting frame, and the mold body mechanism comprises a box body, a collecting box, a rock slope mold part, a pressing and holding assembly and a filtering assembly. A water source in the second water tank is communicated with the interior of the collecting tank through a connecting hose, the water level in the collecting tank is adjusted by adjusting the water level in the second water tank, namely, the underground water level is simulated, and the rainfall and underground water simulation test can reflect the influence of rainfall and underground water on the rock slope. Therefore, the construction scheme of the rock slope in the later period can be adjusted conveniently.

The invention relates to a geological disaster physical experiment device, and particularly relates to a physical experiment device for exploring a rainfall-induced dangerous rock mass caving mechanism. The device comprises a fractured dangerous rock body to be tested, dangerous rock body deformation data synchronous acquisition modules, a hydraulic gradient regulator, a rotary adjustable rainfallsimulation system, a dangerous rock body local data processing module, a small double-row in-line signal receiving and transmitting device, a local data receiving center, a full-automatic high-speedcamera, rock and soil debris and a rainfall receiving tank. The dangerous rock body deformation data synchronous acquisition modules are arranged around the periphery of the crack of the dangerous rock body; a gas spring hydraulic supporting rod used for gradient adjustment can actively adjust the local slope surface where the dangerous rock body is located; and the rotary adjustable rainfall simulation system uniformly sprays water at multiple angles to simulate the influence of natural rainfall on the dangerous rock mass caving mechanism. By simulating natural rainfall, a mechanism of inducing dangerous rock mass caving by rainfall is observed, related data of cracks of the dangerous rock mass is collected and recorded, and statistical analysis is carried out on the related mechanism.