The present disclosure provides an underwater detection method for contact leakage of a tunnel joint of a dam culvert, including: obtaining an underwater image sequence of the culvert by an underwater robot; preprocessing and registering the underwater image sequence; extracting particle information appearing in the underwater image sequence based on the registered underwater image sequence; constructing a three-dimensional fluid velocity distribution map based on the particle information, and determining leakage situation according to the three-dimensional fluid velocity distribution map; and superimposing the three-dimensional fluid velocity distribution map on a preconfigured three-dimensional culvert model, and rendering and displaying it. The present disclosure can adapt to the complex and changeable underwater environment inside the culvert, it has a high sensitivity to fine leakage in the deep layer, it can realize the accurate measurement and trend prediction of leakage, and it can automate the detection process to reduce manual dependence.
A rapid real-time visualization system for a crack initiation process of a concrete component includes a pressure test machine, a fluorescent solution spraying device, an ultraviolet lamp group, a visible light imaging device group and a computer control system. Before the concrete component cracks, a surface of the concrete component is coated with a fluorescent solution retention layer to separate the sprayed fluorescent excitation solution from the concrete component, making the fluorescent excitation solution adhere to the fluorescent solution retention layer for a long time to mark cracks at any position in real time. The rapid real-time visualization system is used to achieve visualization of the crack initiation process, especially an early stage thereof. The rapid real-time visualization system and method can be used to study patterns of microcrack mutual traction development and aggregation into groups when concrete materials crack at any position or multiple points at a component scale.
A large-scale in-situ dewatering treatment method and device for lake sludge are provided. The large-scale in-situ dewatering treatment method for lake sludge includes: step S1, sludge excavation: excavating sludge from a lake and transporting the sludge to a detention pond; step S2, in-situ detention: filtering the sludge in the detention pond to obtain filtered sludge; step S3, dewatering: transporting the filtered sludge to a dewatering workshop and performing deep dewatering on the filtered sludge to obtain mud blocks and wastewater; and step S4, environmental protection treatment: using the mud blocks to build an island near a dredging platform in the lake. The large-scale in-situ dewatering treatment method for lake sludge not only solves the problems of difficulty in selecting a temporary sludge disposal site and high capital investment costs in a traditional lake dredging operation, but also reduces the transportation cost of transporting sludge to a land.
A rural wastewater recycling device, including a collecting ditch, a moving cover, multiple treatment units, a water storage tank and a biological purification assembly. The collecting ditch has a trapezoidal cross section, and is connected to the moving cover. Adjacent treatment units are communicated, and two terminal treatment units are respectively connected with the collecting ditch and the water storage tank. The water storage tank is configured to store treated water. The biological purification assembly is connected with the treatment units, and is configured to purify wastewater flowing through the treatment units. A rural wastewater recycling method based on such device is also provided.
A system for water ecological restoration in a rural region, including a water-collecting ditch assembly, a first biological treatment assembly, an ecological restoration assembly, an operation-regulating assembly and an energy supply assembly. The water-collecting ditch assembly is arranged in a yard. The first biological treatment assembly is internally communicated with the water-collecting ditch assembly. The ecological restoration assembly includes a restoration pool communicated with the water-collecting ditch assembly, a control valve provided on the restoration pool and a second biological treatment assembly communicated with the restoration pool. The restoration pool includes a main body and a spiral ditch component. The operation-regulating assembly is configured to regulate operating states of the water-collecting ditch assembly and the ecological restoration assembly. The energy supply assembly is electrically connected to the operation-regulating assembly. A method for water ecological restoration in a rural region is also provided.
The present invention includes an anti-ice pushing/pulling device installed on the slope of an earth-rock dam and an ice thrust calculation method. The device is arranged in a groove formed on the surface of an upstream slope of the earth-rock dam in the winter water level change area, and includes an upper concrete slab and a lower concrete slab hinged by means of a rotating shaft structure, where the rotating shaft structure is located at the end of the groove in the dam slope far away from the dam crest; a jack is arranged between the two concrete slabs to adjust the flip angle of the upper concrete slab; a plurality of rectangular grooves are formed on the surface of the upper concrete slab, and a combined structure formed by splicing concrete blocks is arranged in the rectangular grooves; and holes are formed on the concrete blocks.
A method for reinforcing soft ground by post-grouting combined with pressurized vacuum preloading is proposed, by pre-burying prefabricated vertical drains and air-boosted pipes in granular material piles, and the air-boosted pipes are used as grouting pipes to reduce the number of times of piling, which not only improves the construction efficiency, but also reduces the structural disturbance of the soil and the influence of smear effect, thus reducing the impact on the radial permeability and the radial consolidation coefficients. The method does not use geotextile bags for granular materials, which can avoid the problem of forming a localized clogging area around the geotextile bags, and the method not only improves the efficiency of vacuum transfer in a pre-consolidation stage, but also improves the grouting effect in the later stage, effectively enhances the strength of soft soil and makes granular material piles and the surrounding soil form composite ground.
A safety measuring device for large diameter pipes includes an abutment, a rotating platform, a full-angle laser distance measuring device, a level meter, full-angle laser distance measuring device includes dial, a pointer, and a laser distance meter; the bending degree measuring device includes a high power thruster, fiber optic gyroscope, information integration, and speed sensing system; the information integration and speed sensing system are used to gather camera, optical fiber, acceleration, positioning, and other key parameters, and it can be transmitted in real-time; it also provides a safety assessment method for large-diameter pipelines, comprising: acquiring large-diameter cross-sectional deformation in different periods, comparing the cross-sectional size, axial deformation, and curving degree to assess the degree of cross-section deformation; the three indicators are taken as important indicators in the safety assessment method of large-diameter pipelines.
The present invention discloses a device and a method for large-scale flow solidification treatment of dredged sediment in a pipeline without a yard. The device includes a dredger, a treatment unit and a use terminal that are communicated in sequence, where the dredger is connected with the treatment unit by adopting transportation units, a mud pump is arranged between the transportation units and the dredger to provide power, a plurality of transportation units are communicated in sequence by adopting relay pumps, the treatment unit includes a mixing system, a monitoring system and a data processing and control system, and the device is also provided with an air pump. The method for the flow solidification treatment of the sludge in the pipeline, provided in the present invention, fundamentally changes the mode where the traditional dredging engineering needs to set up a large number of sludge yards first, and then uses solidification treatment equipment for stirring and mixing treatment, which saves land, and does not have the problem of environmental pollution of yards, and therefore, the method has wide applicability; and a device and a method for mixing sludge and a solidifying material in a pipeline are provided, the injection speed of a solidifying agent is precisely controlled, the mixing effect is good, the emphasis is on the grading and judging standards of pipelines, and corresponding solutions are given
A system for deep sediment flow culture simulating in-situ water pressure includes a flow culture apparatus, an inflow pressurizer and an outflow depressurizer, wherein the inflow pressurizer comprises a pressure tank, an air inlet pipe, a pressure regulating valve, a pressure-resistant container and a first support, and the pressure-resistant container containing in-situ overlying water added with isotopes is placed on the first support, a water outlet of the pressure-resistant container being connected with a water inlet pipe of the flow culture apparatus; the outflow depressurizer comprises a porous medium pipe, a second support, a depressurized water outlet pipe and a water catcher, and an outlet of the porous medium pipe is connected with one end of the depressurized water outlet pipe, the other end of the depressurized water outlet pipe extending into the water catcher.
Disclosed is a particle algorithm-based method for underwater detection and operation positioning of a reservoir dam system. A water body is stimulated by adopting a smoothed particle hydrodynamics (SPH) method, the ROV is simulated by adopting a discrete element method (DEM) unit formed by a series of particles, an umbilical cable between the ROV and a water surface control unit are simulated by a spring unit, dynamic interaction among the ROV, water flow and the cable are calculated by combining the SPH method and the DEM, and real-time motion positions of the ROV and the cable in complex environments are calculated and obtained; and a relative position between the ROV and the surface control unit can be calculated through the real-time position of the cable, and the real-time underwater positioning of the ROV is realized in combination with an absolute coordinate position of the surface control unit.
B63B 71/10 - Designing vesselsPredicting their performance using computer simulation, e.g. finite element method [FEM] or computational fluid dynamics [CFD]
HYDROLOGICAL MODEL CONSIDERING UNCERTAINTY OF RUNOFF PRODUCTION STRUCTURE AND METHOD FOR QUANTIFYING ITS IMPACT ON SURFACE-SUBSURFACE HYDROLOGICAL PROCESS
The present invention discloses a hydrological model considering the uncertainty of a runoff production structure and a method for quantifying influence on a surface-subsurface hydrological process. The present invention quantifies the uncertainty of runoff production structures including a surface runoff structure, an interflow structure and a base flow structure by using parameters, and constructs a hydrological model considering the uncertainty of a runoff production structure by combining an added confluence module. Compared with an original hydrological model, the hydrological model has higher precision, which is capable to quantify the uncertainty of surface runoff, interflow and base flow of the runoff production structure and its impact on the surface-subsurface hydrological process, better improve precision of runoff simulation, and enhance understanding and cognition of the basic rule of a hydrological physical process.
G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
13.
Layout Method of Large-flux Algae Control Wells Based on Sluice-pump Hub Area
A layout method of large-flux algae control wells based on a sluice-pump hub area includes: defining positions of a sluice-pump hub and a river diversion channel as a sluice-pump hub area, arranging at least two sets of pumping station units at the water outlet end of the river diversion channel, using a water flow model to guide streamline and flow velocity distribution of water flow in the river diversion channel, and determining whether it is necessary to adopt rectification measures based on water flow streamline and flow velocity distribution; and obtaining hydraulic characteristic values of the pumping station units, determining whether the currently arranged algae control wells and the adopted rectifying measures simultaneously meet the algae control requirements and subsequent running requirements of the pumping station units based on the hydraulic characteristic values.
A spur dike type fishway inlet includes an upstream flow block wall, an extra water supply nozzle, and an artificial fish reef. The upstream flow block wall is arranged upstream of a fishway inlet; the starting end of the upstream flow block wall is connected with the upstream side wall of the fishway inlet through a connecting shaft and a hydraulic strut. The extra water supply nozzle is installed in the fishway inlet and is connected to the upstream of a power station through a pipeline to directly supply water to a high water head. The artificial reef is set up within the shielding range of the upstream flow block wall.
The present invention discloses a method and system for a wind stress coefficient expression by comprehensively considering impacts of an average wind speed, a fetch and a water depth, and relates to the field of wind-wave-current numerical simulation studies. Based on a wind-wave-current coupling interaction mechanism in lakes, oceans and other waters, two dimensionless numbers that can represent a wind-wave-current interaction strength: a fetch Froude number and a fetch Reynolds number, are constructed, a form of a wind stress coefficient expression with an undetermined coefficient is established, and then the undetermined coefficient is obtained by using a nonlinear regression method with reference to experimental and measured data to obtain a final wind stress coefficient expression. The present invention overcomes the shortcomings that a conventional wind stress coefficient expression considers only an impact of a single factor of wind speed, and breaks through the limitation that it is difficult to adapt to numerical simulation of lakes. A verification result of a Lake Tai water level shows that the constructed wind stress coefficient expression is more reasonable and superior. The present invention can be widely applied to the field of wind-wave-current numerical simulation studies on lakes, oceans and other waters.
A water-salt regulation system for coastal regions, including an irrigation canal, a plurality of drainage channels, and a shaft. The irrigation canal is arranged on a surface farmland. The drainage channels are provided inside a soil. The irrigation canal and the drainage channels are inclined from inland to sea. The shaft is provided with a water port at which a sluice gate is provided. An inner peripheral wall of the water drainage channel is provided with a plurality of filter mesh frames with an accommodating cavity. A filter filling material is provided inside the accommodating cavity. The shaft is provided with a salinity sensor. The shaft has a first state with the sluice gate on the drainage channel closed and a second state with the sluice gate on the drainage channel opened. A water-salt regulation is also provided.
It discloses a method for preparing a magnesium-aluminum hydrotalcite-loaded nano zero-valent iron material for specifically removing perfluorooctanoic acid in a water environment and an optimized process for removing perfluorooctanoic acid thereby, and relates to the technical field of removing persistent organic pollutants in water using adsorption method and oxidation-reduction method and, in particular, to a composite material prepared by loading a nano zero-valent iron on magnesium-aluminum hydrotalcite using liquid phase reduction method.
Disclosed are a method and system for vertically utilizing unconventional water source. The system includes a water collection unit, a water treatment unit, and a monitoring, regulation and reuse unit. The water collection unit is configured to collect rainwater and/or domestic wastewater; the water treatment unit is in communication with the water collection unit and configured to purify the rainwater and/or the domestic wastewater collected by the water collection unit; and the monitoring, regulation and reuse unit is in communication with the water treatment unit and configured to use reclaimed water obtained through treatment by the water treatment unit. The method and the system for vertically utilizing unconventional water source in the present disclosure have advantages of a simple structure, low costs, and high treatment efficiency, effectively save energy and water resources, and are suitable for decentralized treatment and recycling of urban domestic wastewater.
An ultra-large horizontal seepage test system with intelligent graded loading and variable seepage path is provided, which includes a water storage system, a water pressure system, a horizontal seepage test system and an intelligent loading and control system. The water storage system, the water pressure system and the horizontal seepage test system are connected in sequence, and the water pressure system is used to apply a water pressure and a vertical pressure to a test piece to be tested in the horizontal seepage test system. An outlet valve of the horizontal seepage test system is connected to the water storage system, and the intelligent loading and control system is used to control operations of electrical components of the water pressure system and the horizontal seepage test system. With the test system, a water head pressure can be loaded intelligently, and an infiltration angle of water inflow can be adjusted.
A device for monitoring evaporation capacity of a water surface evaporator in a process includes a water surface evaporator and a rain collector, the rain collector and the water surface evaporator having a same size of orifice area, height, and contour profile of a monitoring device. One side of the water surface evaporator is connected with a first measuring well through a pipeline, and another side of the water surface evaporator is connected with a first electromagnetic flowmeter, a water supplementing electromagnetic valve and an overflow electromagnetic valve through a water pipe. The water supplementing electromagnetic valve is connected with a water supplementing barrel through a water supplementing pipe. A water collecting barrel is installed below the special rain collector. A second magnetostrictive water level meter, a starting drainage switch and a stopping drainage switch are installed in the second measuring well.
G01F 23/22 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
G01F 1/56 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
G01F 15/00 - Details of, or accessories for, apparatus of groups insofar as such details or appliances are not adapted to particular types of such apparatus
22.
FLEXIBLE GREENING SYSTEM INTEGRATED WITH WATER INTO FERTILIZER
A flexible greening system integrated with water into fertilizer includes a vegetation fixing assembly, a vegetation growth layer and a water supply assembly. The vegetation fixing assembly is configured to connect to a building. The vegetation growth layer is provided on the vegetation fixing assembly and is configured for planting of green vegetation. The vegetation growth layer includes a substrate layer for vegetation growth and a drainage layer provided below the substrate layer. The water supply assembly is configured to supply the water to the green vegetation, and is provided with a drainage pipe communicated with the drainage layer.
A01C 23/04 - Distributing under pressureDistributing mudAdaptation of watering systems for fertilising-liquids
A01C 23/00 - Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
A01G 9/02 - Receptacles, e.g. flower-pots or boxes Glasses for cultivating flowers
A01G 27/00 - Self-acting watering devices, e.g. for flower-pots
E02B 11/00 - Drainage of soil, e.g. for agricultural purposes
A01G 24/46 - Growth substratesCulture mediaApparatus or methods therefor characterised by their structure in block, mat or sheet form multi-layered
23.
Water-soil interface physiochemical monitoring apparatus and reservoir area hydro-fluctuation belt monitoring system based on same
A water-soil interface physiochemical monitoring apparatus and a reservoir area hydro-fluctuation belt monitoring system based on the same. The water-soil interface physiochemical monitoring apparatus comprises a cylindrical shell, a conical head, a sensor data acquisition circuit, a sealing plug, and a plurality of sensor modules. One end of the cylindrical shell is in sealing connection with the conical head, and the other end is sealed by the sealing plug. The sensor modules are connected to the sensor data acquisition circuit, and are all located in the sealed space of the cylindrical shell. Each sensor module comprises a circuit board, a temperature sensor, a dissolved oxygen sensor and a conductivity sensor, which are combined together by casting using resin, and the temperature sensor, the dissolved oxygen sensor and the conductivity sensor are separately connected to the circuit board.
A experimental device is specifically an annular water tank formed by a first arc-shaped water tank, a first special-shaped water tank, a second arc-shaped water tank and a second special-shaped water tank which are sequentially connected head to tail, and the outer perimeter is 70 m to 110 m, wherein the inner walls of both the first special-shaped water tank and the second special-shaped water tank are flat, both of the widths between the outer walls and the inner walls are gradually increased from the two ends to the middle, and water flow pushing equipment which are capable of enabling the maximum water flow velocity in the experimental device to reach a preset value are respectively placed in the first special-shaped water tank and the second special-shaped water tank.
An experimental system comprises a water level indicator, a data processing module, and an experimental simulator. The water level indicator is connected to the data processing module, and the water level indicator is mounted nearby the experimental simulator when in use. The experimental simulator comprises several experimental units. Each experimental unit comprises a first pipe, a second pipe, and a third pipe, wherein the first pipe perpendicularly communicates with the second pipe, a check valve which allows water to flow out but allows no water to flow in is connected to the water outlet of the second pipe, and the third pipe perpendicularly communicates with the second pipe and is parallel to the first pipe. The heights of the third pipes of the several experimental units are in a decreasing or increasing order.
G01F 23/00 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
G01C 13/00 - Surveying specially adapted to open water, e.g. sea, lake, river or canal
The present invention provides a self-positioning system of a deepwater underwater robot of an irregular dam surface of a reservoir, including cross reflection metal plates arranged on the irregular dam surface, and an underwater robot provided with a control motherboard, a water level indicator and a sonar system, wherein the water level indicator and the sonar system are respectively connected with the control motherboard, and the control motherboard is connected with a computer via a cable. The cross reflection metal plate has known coordinates and has four quadrants. A sonar signal emitted by the sonar system is reflected by the cross reflection metal plate to generate sonar reflection signals of four quadrants, and the sonar signals in the effective quadrants correspond to known coordinate parameters of the cross reflection metal plate so as to obtain the horizontal distance between the underwater robot and the irregular dam surface. The water level indicator is used for calculating the vertical position of the underwater robot. The computer calculates accurate positioning of the underwater robot according to the horizontal position and the vertical position. The present invention has the beneficial effects of being able to accurately obtain the positioning coordinates of the underwater robot in the deepwater of the irregular dam surface of the reservoir.
An ultra-deep reservoir stratified water sample and sediment core integrated artificial intelligence sampling device, comprising a sampling device main chamber, an attitude balance sensor, a propeller, a balance base, and a sampler body, wherein the attitude balance sensor and the sampler body are disposed inside the sampling device main chamber; the propeller is disposed outside the sampling device main chamber; and the balance base is located at a bottom end of the sampling device main chamber. The sampling device of the present invention is an intelligent sampling device integrating high-definition underwater topography observation, undisturbed sediment core collection, vertical stratified accurate sampling of water bodies, and real-time in-situ monitoring of key physical and chemical parameters, and can be flexibly applied to deep and shallow water environments under complicated conditions.
A method for controlling the gate based on the habitat requirement for fish overwintering in rivers. According to the characteristics of biological habitat of the river and the habitat demand of fishes during overwintering, the method specifically comprises the steps of: firstly, determining candidate fishes for ecological flow calculation though fish resources investigating and historical data, and then screening out the target fish by adopting hierarchical analysis method; Secondly, establishing a quantitative response relationship curve between target fish physiological adaptions and water temperature, obtaining ecological water level which ensures the target fish overwintering safely according to the vertical temperature distribution, and establishing the relation between water depth and discharge using hydrodynamic model; finally, setting up a gate control system including a radar water level meter in the overwintering areas and an ecological water level management system in a gate control room.
POWER CHINA KUNMING ENGINEERING CORPORATION LIMITED (China)
NANJING HYDRAULIC RESEARCH INSTITUTE (China)
CHINA INSTITUTE OF WATER RESOURCES AND HYDROPOWER RESEARCH (China)
Inventor
Ma, Hongqi
Hu, Yaan
Zhang, Zongliang
Yuan, Xianghua
Xiang, Zejiang
Al, Yongping
Chuan, Yimin
Nan, Guanqun
Zou, Rui
Chen, Zhaoxin
Hu, Xiaolin
Zhang, Hongtao
Xiao, Haibin
Huang, Qun
Zhou, Keheng
Cao, Xuexing
Li, Zichong
Ma, Renchao
Cao, Yinan
Ling, Yun
Xie, Sisi
Yu, Junyang
Li, Zhonghua
Li, Yun
Xuan, Guoxiang
Wang, Xin
Yan, Xiujun
Xue, Shu
Guo, Chao
Huang, Yue
Wu, Yihong
Zhang, Rui
Zhang, Dong
Zhang, Jinxiong
Zhang, Wenyuan
Zhang, Hongwei
Gao, Jianbiao
Abstract
A hydraulic ship lift, including: a mechanical synchronizing system; a stabilizing and equalizing hydraulic driving system; and a self-feedback stabilizing system. The stabilizing and equalizing hydraulic driving system includes first resistance equalizing members arranged at corners of branch water pipes or/and second resistance equalizing members arranged at bifurcated pipes, circular forced ventilating mechanisms arranged at front of water delivery valves of a water delivery main pipe, and pressure-stabilizing and vibration-reducing boxes arranged behind the water delivery valves. The self-feedback stabilizing system includes a plurality of guide wheels; each guide wheel of the self-feedback stabilizing system is fixed on a ship reception chamber through a supporting mechanism. The supporting mechanism includes a base connected to the ship reception chamber, a support articulated on the base, a flexible member fixedly arranged between the support and the base, and a limiting stopper arranged on the outer side of the flexible member.
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