Device suitable for an instant dam break test and operation method of device

A dam breaking and water tank technology is applied in the field of instantaneous dam breaking test devices, which can solve the problems of shear force splash and upstream water disturbance, and achieve the effects of reducing disturbance and eliminating jet and water splash.

Active Publication Date: 2018-04-13
ANHUI UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0003] The physical model test of indoor flume dam break is the main research method to study the process of instantaneous dam break. During the test simulation process, the method of suddenly lifting the gate is usually used to obtain the instantaneous dam break water flow. Since the height of the gate exceeds the lower edge of the gate during the gate li

Method used

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  • Device suitable for an instant dam break test and operation method of device
  • Device suitable for an instant dam break test and operation method of device
  • Device suitable for an instant dam break test and operation method of device

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Embodiment

[0039] Such as Figure 1-Figure 3 As shown, a device suitable for an instantaneous dam break test of the present invention includes a test tank 1 , a water gate 2 , a transmission system 3 and a trigger system 4 .

[0040] Such as figure 1 As shown, the bottom surface of the test water tank 1 is provided with a transverse seam 11 having the same width as the bottom surface and perpendicular to the tank body. The water gate 2 is located at the position of the transverse seam 11 of the test tank 1 , and the water gate 2 includes a gate 21 , a door groove 22 , an upper sealing cover 23 and a lower sealing cover 24 . Wherein, the gate 21 can move up and down in the transverse seam 11, the gate groove 22 is arranged on the inside of the two groove walls of the test tank 1 and intersects perpendicularly with the transverse seam 11, the left and right ends of the gate 21 are located in the gate groove 22, and the upper sealing cover 23 and the lower sealing cover 24 are respectivel...

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Abstract

The invention discloses a device suitable for an instant dam break test and an operation method of the device and relates to the field of hydraulics model testing. The device includes a test water groove, a water gate, a transmission system and a triggering system. Before a dam break test starts, a gate simulating a dam body in a door groove is in a static state. When the dam break test starts, aheavy bob falls so as to pull a thin cord, so that a pin is unplugged. A cam is pulled away instantly by a spring. The gate loses support of a support rod and acquires pulling force of a transmissionsystem at the same time, and falls rapidly in an extremely short time. By adopting the device provided by the invention, formation of under-gate hydraulic jump and disturbance of upstream water body due to upward lifting of a gate in a traditional dam break test are avoided, and more accurate study of water flow motion characteristics in a dam body instant break condition is facilitated.

Description

technical field [0001] The invention relates to the field of hydraulic model tests, in particular to a device suitable for instantaneous dam break tests and an operating method thereof. Background technique [0002] According to the "First National Water Conservancy Census Bulletin" issued by my country in 2013, there are a total of 98,002 reservoirs of various types in my country, of which the storage capacity exceeds 100 million m 3 There are more than 400 large reservoirs in China. Within the scope of our country's reservoir protection, there are hundreds of large and medium-sized cities, more than 300 million people and 480 million mu of farmland. With the passage of time and the lack of routine maintenance, the dam body of the reservoir will inevitably experience aging and damage, forming dangerous reservoirs and disease reservoirs. Extreme events such as earthquakes and heavy rains are likely to induce dam failures and cause huge safety hazards. Hidden danger. Dam s...

Claims

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Application Information

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IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 戎贵文王旭李瑜罗秀丽倪欢沈齐婷郑青辉向令
Owner ANHUI UNIV OF SCI & TECH
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