40 results about "River engineering" patented technology

The invention discloses an experimental system achieving the coupling effect of wind, waves and rain. The experimental system comprises an annular water groove and a wind tunnel, the wind tunnel is mainly composed of a tunnel body, a driving system and a measurement control system, a linear experimental section is arranged in the annular water groove and sleeved with the tunnel body, the driving system is arranged in the linear experimental section and located at one end of the tunnel body, a rainfall system is arranged at the top of the tunnel body, and the annular water groove is communicated with the rainfall system at the top of the tunnel body through a water conveying pipeline and supplies water to the rainfall system. The system is a small wind, rain and wave environment simulated scene, represents the coupling process of the wind, the waves and the rain, achieves a dynamic response of an ocean / river engineering structure under the effect of extreme waves, strong-wind loads andrainstorm, and discloses the physical mechanism of instability of the ocean / river engineering structure through response test and research; the detection requirement for the dynamic response of the ocean engineering structure under the combined effect of the wind, the waves and the rain is met, and the adaptability limit of an existing experimental device is eliminated.

The invention discloses a method for calculating the channel forming discharge of a tidal reach and belongs to the field of river regulation projects and channel regulation projects. The method includes the steps of firstly, building a tidal current mathematical model to calculate and research the annual hourly water level, discharge, spring tide differences of the flooding season and the dry season and the water level differences of the flooding season and the dry season of the selected section of the reach; secondly, dividing the discharge of one section of the reach into a plurality of equal discharge levels, and determining the occurrence frequency P of each discharge level; thirdly, calculating the Q<n>P product value corresponding to each discharge level; fourthly, drawing Q-Q<n>P relation curves, and finding the extreme value of a channel forming effect curve, wherein the discharge corresponding to the extreme value is the channel forming discharge; fifthly, analyzing channel forming discharge along the reach and section flooding season-dry season tide difference change, analyzing influence of tides and runoff power on the channel forming discharge, and analyzing the features of channel morphology shaped by reach water power. The method can be used for calculating the channel forming discharge of the tidal reach and provides important reference indexes for the planning and design of tidal reach riverway and channel regulation projects.

The invention relates to an artificially turning method of a sandy river engineering project mobile bed model and an artificially turning diversion trench. The method comprises the following steps: arranging artificially turning diversion slots on a reach which has smooth and stable river regime, symmetric geometry form section, riverbed erosion and deposition with small change and transverse distributed flow hydraulic elements; determining the geometric elements of the turning angle, the turning radius, the joint section length and the transition section length of the artificially turning diversion slots; obtaining the sloping according to flow wearing resistance calculated in terms of the model draining flow, flow rate and water-depth parameter; calculating the final slope for designingthe inlet and outlet of the diversion slot by the original sloping and additional sloping of a riverway; calibrating according to the test requirement; adjusting the sloping of the artificially turning diversion slots by the test of different-magnitude flood; and finishing the design of artificially turning diversion slots. By the method and device of the invention, the restriction of insufficient model length can be eliminated under the condition of not changing the model scale.

The invention relates to a river intersection, bifurcated and curved microbial community river model test system and test method. The river intersection, bifurcated and curved microbial community river model test system comprises a river channel water tank, a river substrate taken from a test river channel is laid at the bottom of the river channel water tank, the river channel water tank comprises a main river channel and a plurality of branch river channels, and an energy dissipation groove is formed in the upstream end of each branch river channel; and a triangular weir is arranged at a water outlet of the main stream river channel, river water passes through the energy dissipation grooves and converges at the main stream river channel from the branch river channels at a uniform speed and then flows out from the water outlet of the main stream river channel, and a river channel simulation environment is provided for river sediment. According to the test method, the system is used for obtaining microorganisms in river water in a river substrate for subsequent tests. A river engineering simulation test method and a microbiological pollutant degradation test method are combined, the interchange of a water inlet and a water outlet can test substrate microflora in a river intersection area, and further can test substrate microorganisms of a bifurcated river channel and a bent river channel, so that the system is suitable for microbiological tests of various river channels. 22.

The invention discloses a power supply protection device for a river engineering model. The power supply protection device comprises a bottom plate; a cylinder is vertically fixed in the centre of one surface of the bottom plate; a cover is arranged on the top of the cylinder; the cover and the cylinder are in sealed connection; a plurality of waterproof wire-through pipes are arranged at the sealed joint of the cover and the cylinder; the waterproof wire-through pipes penetrate the cylinder from outside of the cylinder; a power supply socket is put in the cylinder; the power line of the power supply socket passes through one waterproof wire-through pipe; furthermore, the power line of the power supply socket and the waterproof wire-through pipe are sealed; each power line inserted into the power supply socket passes through a corresponding waterproof wire-through pipe; and furthermore, each power line and the corresponding waterproof wire-through pipe are sealed. By means of the power supply protection device for the river engineering model disclosed by the invention, the electricity using security is improved; and water immersion can be prevented.

The invention relates to a sediment observation method and device for river engineering model sediment test and onsite river. According to the technical scheme, a portable sediment concentration measuring method based on the optical principle comprises the following steps that (1) a plurality of optical measuring points arranged in the length direction of a rod piece are arranged on at least one measuring rod piece, wherein each optical measuring point comprises a transmitting probe and a receiving probe; 2) a box is also fixed on the measuring rod piece, a control panel, a power supply module, an infrared laser generator, a signal processing module, a data storage module and an inclination sensor are arranged in the box, the receiving probe of each measuring point is communicated with theoptical signal processing module through an optical fiber and then is electrically connected with the control panel; and (3) the measuring rod piece vertically stretches into water flow, and after light reflection signals of all positions of different depths are measured at the same time, processed sediment content data are transmitted to the control panel through the signal processing module. The method and the device have the characteristics of being convenient to operate and accurate in measurement.

The invention relates to a method for estimating large area bed shear stress of a fixed bed river model test. A method for estimating a bottom bed shear stress using a bottom particle trajectory by selecting small balls with different particle sizes, the influence of water depth on the shear stress measurement can be reduced, and the bed shear stress of large area and different parts in the fixedbed model test of river engineering can be synchronously and quickly obtained by the invention, thereby greatly improving the efficiency of the bed shear stress estimation.

The invention provides a cam for driving a voice coil of a high-pressure jet flow type sound wave rain enhancement device suitable for Tianghe river engineering and a design method of the cam. The camis in externally tangent contact with a rocker arm pin roller with the radius of r in the rocker arm system; wherein the center of the rocker arm pin roller moves in a rigidly connected rocker arm system to form a trajectory curve of the center of the rocker arm pin roller, and the method is characterized in that the inward expansion r of the trajectory curve of the center of the rocker arm pin roller is used as a molded line of the cam, and the cam is designed according to the molded line. According to the method for solving the cam profile, compared with a traditional method, the complex geometrical relationship is avoided, the solving method is unified, and the continuity and smoothness of the cam are improved due to the fact that the information of surrounding points is effectively utilized, so that the dynamic smoothness of the cam is enhanced. Besides, cam molded line design is carried out based on the method, the driven voice coil can obtain the excellent dynamic performance ofshort-time opening and short-time closing, and therefore high-pressure jet flow air generates strong discontinuity, strong sound waves are excited, and the sound wave rain enhancement effect is enhanced.

The invention discloses a combined river channel dredging device, which relates to the technical field of channel engineering cleaning. The invention includes a boat, a working box, a sludge tank and a dredging pump; two pairs of chutes are arranged on the inner walls of both sides of the working box; movable plates are slidably connected to the inner walls of the two pairs of chutes; through holes are opened between the two pairs of chutes; A pair of rectangular strips are arranged on both edges of the through hole; threaded holes are arrayed on one end of a pair of rectangular strips; the inner wall of the threaded hole is threaded with bolts; the bolts are matched with nuts; the upper surface of the work box is provided with round holes and installation holes; A dredging pump is fixedly installed on the inner wall; one end of the dredging pump cooperates with the sludge tank; two pairs of rotating devices are arranged on the upper surface of the working box; the inner wall of the working box is fixedly connected with the sludge tank; the working box is fixedly connected with the boat. The invention has the effects of convenient operation, cost saving, continuous operation, improved work efficiency and reduced labor intensity through the functions of the boat, the work box, the sludge tank and the dredging pump.

The invention discloses a river engineering test water level gauge and a parameter calibration method thereof. The water level gauge includes a water level measuring device, a water tank, a probe for measuring the reference water level of the water tank, and a pressure sensor connected with the water tank and used for measuring the water outlet pressure of the water tank. A floating plate is fixedly arranged under the pressure sensor, and an ultrasonic probe opposite to the pressure sensor runs through the center of the floating plate, and both the ultrasonic probe and the pressure sensor are electrically connected to the water level measuring device. The parameter calibration method includes measuring the water level of the water cylinder z 盛水量筒 ; Measure the reference water level of the water tank z a , the vertical distance between the end face of the pressure sensor and the reference water level h 1 , the vertical distance between the end face of the ultrasonic probe and the water surface of the measuring cylinder h ;pass h 2 = z a - z 盛水量筒 - h 1 - h Obtain the vertical distance between the end face of the ultrasonic probe and the end face of the pressure sensor h 2 . Significantly reduce the observation links and human factors of the level follow-up method, reduce the influencing factors of the observation accuracy, and improve the observation accuracy.

The invention discloses a layered sampler for suspended sediment for river engineering model tests, which comprises a plurality of single-layer sampling structures, baffles and cross bars, and the single-layer sampling structure is a cuboid structure with a cylindrical sampling bin in the middle , the single-layer sampling structure is vertically overlapped and combined to form a multi-layer sampling structure, the holed plate is provided with a circular sampling hole with the same diameter as the sampling bin mouth, and the number of sampling holes in the baffle plate is less than that of the sampling bin One, the upper ends of the front and rear baffles are connected by cross bars; the present invention also discloses a method based on the above-mentioned layered sampler, which can sample the effect of multiple layers of suspended matter at one time, greatly shortening the sampling time of suspended matter in river engineering model tests. time.

The invention relates to the technical field of river course management, and discloses a high-efficiency dredging device for water conservancy river project treatment, including a hull, the top of the right end of the hull is fixedly connected with a chain bucket machine, and the bottom end of the chain bucket machine is equipped with A bucket, the inner wall of the bucket is fixedly connected with a grid, the inner bottom of the hull is provided with a box, and the inside of the box is sequentially provided with a primary filter area, a primary sedimentation area and a secondary filter area from right to left. In the sedimentation area, a pre-sedimentation tank is provided at the bottom of the primary filtration area, and is communicated with the primary sedimentation area through the pre-settling tank. The high-efficiency dredging device for water conservancy and river project control has achieved the advantages of greatly reducing water pollution through the secondary sedimentation area and the sump. Through the treatment in the secondary sedimentation area, it can effectively decompose the river water and silt, so that the silt can be quickly recovered. Settling, and after the separation, the river water is separated by the inclined tube separation component and then poured into the sump, which can ensure reasonable effluent water quality.

The invention discloses a power supply protection device for a river engineering model. The power supply protection device comprises a bottom plate; a cylinder is vertically fixed in the centre of one surface of the bottom plate; a cover is arranged on the top of the cylinder; the cover and the cylinder are in sealed connection; a plurality of waterproof wire-through pipes are arranged at the sealed joint of the cover and the cylinder; the waterproof wire-through pipes penetrate the cylinder from outside of the cylinder; a power supply socket is put in the cylinder; the power line of the power supply socket passes through one waterproof wire-through pipe; furthermore, the power line of the power supply socket and the waterproof wire-through pipe are sealed; each power line inserted into the power supply socket passes through a corresponding waterproof wire-through pipe; and furthermore, each power line and the corresponding waterproof wire-through pipe are sealed. By means of the power supply protection device for the river engineering model disclosed by the invention, the electricity using security is improved; and water immersion can be prevented.

The invention belongs to the technical field of automatic control in river engineering model tests, and discloses a river engineering model multi-parameter measuring device and a walking control method thereof; it includes two parallel tracks arranged on both sides of the river engineering model channel, and erected on the two rails There are a number of attribute identifications installed along the two tracks, which contain the attribute information corresponding to the section, and the attribute information includes the sequence number of the section; sliding devices are installed on the front and rear sides of the bridge body of the measurement platform , the sliding device is equipped with measuring equipment, which is used to slide in the direction of the section; the left and right ends of the bridge body of the measuring platform are respectively equipped with a walking mechanism, which is used to move back and forth along the river channel on the two tracks and read the properties Marking; a control unit is installed on the measuring platform to control the movement of the sliding device and the traveling mechanism; the section-by-section walking method is adopted. The invention has the advantages of high practicability, convenient operation, low cost and reliable operation.

The invention discloses a riverway quality management and control system based on a BIM technology. The riverway quality management and control system comprises a data collection unit, a central processing unit, a BIM model, a communication module and a client query management unit, the data collection unit comprises an engineering information management module for acquiring river engineering management information and a geographic information management module for acquiring river geographic information, and is in communication connection with the central processing unit; the client query management unit is in communication connection with the central processing unit through the communication module; wherein the central processing unit is in communication connection with the BIM model, andthe BIM model comprises a BIM database; wherein the data collection unit transmits acquired data to the central processing unit, the data processed by the central processing unit is transmitted to the BIM module, the data processed by the BIM module is stored in the BIM database, and the client query management unit queries or manages the data of the data collection unit and the BIM module through the central processing unit.

The invention discloses a three-dimensional observation method of eroded landform, belonging to the field of topographic survey. The method is characterized by comprising the steps that: a full-plane laser and a laser positioning spot are emitted to an eroded landform to be observed by a full-plane laser projector and a topography image calibration device; contours are formed on the surface of the landform by the full-plane laser, the laser positioning spot is used as a control spot for dimensional calibration and deformational correction of topography images; the full-plane laser projector is translated or lifted by certain steps, the landform images with different initial altitudes are acquired by an image acquisition device and then superposed and fused via computer software, so as to realize the dense acquisition of landform surface spots; and three-dimensional coordinates of the landform surface spots are acquired in accordance with geometrical information of laser lines in the images to further obtain a micro-space digital landform contour map, thus noncontact three-dimensional measurement for the eroded landform and computational analysis for the three-dimensional model thereof are achieved. The entire system has high observation efficiency and accuracy, and is suitable for the three-dimensional observation of landform in river engineering model test.

The invention discloses a manufacturing method of a river model. The manufacturing method comprises the steps of 1, simulation area selecting; 2, manufacturing material selecting; 3, model manufacturing site selecting; 4, model manufacturing; and 5, roughening. The river model manufactured through the manufacturing method can truly simulate a real river and facilitates scientific research.

The invention discloses a self-calibration relative sinking and floating measurement system and a measurement method of a ship, and belongs to the technical field of ships and ocean platforms. The measurement system is characterized in that relative sinking and floating self-calibration is performed during measurement, and the actual relative sinking and floating amount is obtained according to a relationship formula of a reference micropressure difference and absolute pressure. The system and the method surmounts the traditional method of integral operation treatment taking vibrating and inertial sensors as cores, and have the characteristics of high testing accuracy, good stability, strong instantaneity, accurate calculation and the like, and the method is also suitable for measuring the similar ocean and inland river engineering ships, and has a good application prospect.

The invention discloses a method for analyzing instantaneous sediment transportation intensity of pebble gravels through images. The method comprises the following steps: continuously acquiring moving sediment images within a preset time period; generating a measuring section for each image; extracting the measuring section at the same fixed position of each image, and reconstructing the extracted measuring sections into a diachronic graph according the sequence of the acquisition time; acquiring the border of each sediment particle in the diachronic graph, and determining the position of the sediment particle in the diachronic graph; counting the number of sediment particles; acquiring the number of total frames and the sampling frequency which are acquired within the preset time period, obtaining the acquisition time according to the number of total frames and the sampling frequency, and according to the acquisition time, the number of the counted sediment particles with the area larger than a preset value as well as positions of the sediment particles, generating a sediment transportation-time graph so as to generate a sediment transportation intensity-time relationship curve. The invention further discloses a system for analyzing the instantaneous sediment transportation intensity of the pebble gravels through the images as well as a method for measuring the instantaneous sediment transportation intensity of the pebble gravels through a river engineering model.