An experimental flume device for exploring the change of sand ripple on high-concentration sediment bed surface near the bottom

Abstract

This invention discloses an experimental water tank device for investigating changes in sand ripples on a near-bottom high-concentration sediment bed. The device includes a water storage tank, a straight-channel experimental water tank, and a sedimentation tank. The two sides of the straight-channel experimental water tank are connected to the water storage tank and the sedimentation tank, respectively. A transparent glass panel is installed on the surface of the straight-channel experimental water tank. A trolley track is fixedly installed at the upper end of the straight-channel experimental water tank, and a trolley is mounted on the track. A measuring mechanism is installed on the trolley, and a rangefinder is installed in the middle of the trolley. A flow meter is installed on one side of the trolley, and a 3D scanner is installed on the other side. The 3D scanner is installed on the lower end of the trolley's platform, with its scanning probe facing outwards and tilted downwards. A high-definition camera is positioned on the outside of the transparent glass panel. The measuring mechanism establishes a data transmission connection with a data terminal via a wiring harness. This invention features simple and quick assembly, high automation and efficiency, and the ability to continuously collect data on changes in sand ripples on the sediment bed surface in multiple dimensions.

Claims

1. An experimental water tank apparatus for investigating the changes in sand ripples on a near-bottom high-concentration sediment bed, comprising a water storage tank (10), a straight-channel experimental water tank (11), and a sedimentation tank (12), wherein the two sides of the straight-channel experimental water tank (11) are respectively connected to the water storage tank (10) and the sedimentation tank (12), and a transparent glass (15) is provided on the tank body of the straight-channel experimental water tank (11); characterized in that: A trolley track (13) is fixedly installed at the upper end of the straight-track experimental water tank (11). A trolley (20) is provided on the trolley track (13). A control box (14) for controlling the start and stop of the trolley (20) is provided on the outer surface of the water storage tank (10). A measuring mechanism (30) is provided on the trolley (20). The measuring mechanism (30) includes a rangefinder (31), a flow meter (32), a 3D scanner (33), and a high-definition camera (34). The rangefinder (31) for measuring the elevation of the sediment bed is installed in the middle of the trolley (20). The flow meter (32) is installed on one side of the trolley (20), and the 3D scanner (33) is installed on the other side. The measuring end of the flow meter (32) is located below the rangefinder (31). The 3D scanner (33) is installed on the lower end face of the trolley (20), and the scanning probe of the 3D scanner (33) faces the outside of the trolley (20) and is tilted downward. The high-definition camera (34) is located on the outside of the transparent glass (15). The measuring mechanism (30) establishes a data transmission connection with the data terminal through a wiring harness.

2. The experimental water tank apparatus for investigating the changes in sand ripples on a near-bottom high-concentration sediment bed according to claim 1, characterized in that, The bottom walls of the water storage tank (10) and the straight-line experimental water tank (11) are higher than the bottom wall of the sedimentation tank (12). The water storage tank (10) and the sedimentation tank (12) are connected by a water pipe (16). A water pump (17) is installed on the water pipe (16) to pump water from the sedimentation tank (12) to the water storage tank (10). The water pump (17) is connected to the control box (14) for control.

3. The experimental water tank apparatus for investigating the changes in sand ripples on a near-bottom high-concentration sediment bed according to claim 1, characterized in that, A gate (18) is provided at the junction of the water storage tank (10) and the straight experimental water tank (11). The gate (18) moves up and down along the sealing limit plates (181) on both sides of the door opening of the water storage tank (10). An equipment frame (182) is fixedly installed above the door opening of the water storage tank (10). A winch (183) connected to the control box (14) is installed on the equipment frame (182). The output end of the winch (183) is connected to the lug (184) fixed at the bottom of the gate (18) through a steel wire rope (185).

4. The experimental water tank apparatus for investigating the changes in sand ripples on a near-bottom high-concentration sediment bed according to claim 1, characterized in that, The vehicle (20) is configured with two axles and four wheels, one of which is a power axle (211) and is equipped with a power transmission mechanism (21) to drive the power axle (211) to rotate. The power transmission mechanism (21) includes: The drive motor (212) is connected to the control box (14) and is installed on the upper part of the vehicle plate of the trolley (20). Its output end is provided with a first bevel gear (213). The vertical shaft (215) is rotatably arranged at both the upper and lower ends on the rotating shaft base (216), and a second bevel gear (214) meshing with the first bevel gear (213) is fixedly connected to the upper end of the vertical shaft (215) after passing through the rotating shaft base (216). The spiral teeth (217) provided in the middle of the vertical shaft (215) are meshed with the turbine teeth fixed on the power shaft (211).

5. The experimental water tank apparatus for investigating the changes in sand ripples on a near-bottom high-concentration sediment bed according to claim 4, characterized in that, The rotating shaft base (216) at the upper end is fixedly installed on the upper end of the vehicle board of the traveling crane (20) through a "冂”-shaped first bracket (219), and the rotating shaft base (216) at the lower end is fixedly installed on the lower end of the vehicle board of the traveling crane (20) through an "L”-shaped second bracket (218).

6. The experimental water tank apparatus for investigating the changes in sand ripples on a near-bottom high-concentration sediment bed according to claim 1, characterized in that, The flow velocity meter (32) is installed at the lower end of the vehicle board of the traveling crane (20) through a telescopic rod (321), and the flow velocity meter (32) is arranged at the lower end of the telescopic rod (321).

7. The experimental water tank apparatus for investigating the changes in sand ripples on a near-bottom high-concentration sediment bed according to claim 1, characterized in that, A plurality of distance measuring instruments (31) are arranged side by side and are installed on a transfer block (311) with an "L”-shaped cross-section through a rod. The transfer block (311) is fixedly connected to the moving block (231) of the moving component (23) after passing through a moving port (22) opened on the vehicle board of the traveling crane (20).

8. The experimental water tank apparatus for investigating the changes in sand ripples on a near-bottom high-concentration sediment bed according to claim 7, characterized in that, The moving component (23) is erected above the moving port (22), and the moving component (23) includes: A screw rod (232) is threadedly connected to the threaded hole in the middle of the moving block (231), one end is rotatably installed on a bearing, and the other end is fixedly installed on the output end of a servo motor (233). Slide rods (234) are respectively arranged on both sides of the screw rod (232) and are slidably connected to the moving block (231). The two ends of the slide rods (234) are rotatably installed on bearings. The servo motor (233) is in control connection with the control box (14) and is installed on a mounting plate provided on the vehicle board of the traveling crane (20).

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