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Self-circulation energy saving device of critical particle size for separating tailing sand bed loads from suspended loads

An energy-saving device and tailings sand technology, applied in hydraulic models, etc., can solve the problems that other rivers cannot be used, and achieve the effect of low price and convenient purchase

Active Publication Date: 2017-02-01
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this formula is a regional empirical formula with great limitations and cannot be applied to other rivers

Method used

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  • Self-circulation energy saving device of critical particle size for separating tailing sand bed loads from suspended loads
  • Self-circulation energy saving device of critical particle size for separating tailing sand bed loads from suspended loads
  • Self-circulation energy saving device of critical particle size for separating tailing sand bed loads from suspended loads

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A self-circulation energy-saving device for dividing the critical particle size of tailings sand moving matter and suspended matter, including a simulated tailings starting system I, a water head control system II, a water circulation system III, and a flow measurement device IV; the simulated tailings starting system I is placed on the water circulation system III through the lifting bracket 4 and the base 5 to reduce the space occupied by the equipment; the water head control system II is connected to the simulated tailings starting system I through the model box water supply pipe 8, and is fed through the water head tank The pipe 16 and the return pipe 15 of the overflow tank are connected with the water circulation system III, and can move up and down in the vertical direction at the same time, and the moving range is from the horizontal position of the model box to 2m in the vertical direction; And the circulation return pipe 19 is connected with the simulated taili...

Embodiment 2

[0050] This embodiment adopts the same device as that of Embodiment 1. Controlled compacted dry density in embodiment 1 at 1.63g / cm 3 Left and right, in view of the fact that the dam dry density of the actual tailings dam is different, this embodiment will control the median particle size d of the tailings sand particles measured in the laboratory 50 = 0.14mm unchanged, change the measured dry density value of the tailings dam, and divide the different measured dry density values ​​into the test of dividing the critical particle size of the drift mass and the suspended mass. The specific test steps are described as follows:

[0051] 1) Lower the head water tank 10 to the same level as the model tank 1 by the manual winch 14, inject 2 / 3 of water into the circulating water tank 17, open all the brake valves 7, 9, 20, and turn on the small submersible pump 18 Trial run, check each system for faults.

[0052] 2) After the system runs smoothly, close the small submersible pump 1...

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Abstract

The invention discloses a self-circulation energy saving device of critical particle size for separating tailing sand bed loads from suspended loads; and based on theoretical knowledge on traditional sediment aspect, a physical model is used as a carrier to search the critical particle size for separating the tailing sand bed loads from the suspended loads. A manual windlass lifting water head water tank, a lifting bracket and am energy dissipating ball are used for obtaining similar uniform currents with different unit discharges; the energy dissipating ball is positioned in a water inlet pipe port for connecting a water head water tank with a model box; and the lifting bracket is positioned at the lower part of the model box. The self-circulation energy saving device has the beneficial effects of water saving, environmental protection, low cost and simple operation, can change various indexes of sand samples to repeat tests, and can change the water head and the lifting bracket to obtain the similar uniform currents with different characteristics. The self-circulation energy saving device searches the critical particle size for separating the tailing sand bed loads from the suspended loads, and has important significance on research of such aspects as the sediment discharge, the silting parts of the bed loads and the suspended loads and the shape and the expansion of a break opening in overtopping dam break.

Description

technical field [0001] The invention belongs to the technical field of researching the migration law of non-viscosity granular accumulations under the action of water flow, in particular, it is a basic test device for studying the formation and expansion of flooding of tailings dams under the action of rainfall. Background technique [0002] At present, when the tailings dam overflows, the research on the formation mechanism and expansion law of the collapse is rarely published. Most of the few papers make breakthroughs in theory with the help of fluid mechanics, and the conclusions are often that there are relatively large gaps. Analytical solutions with large errors lack qualitative rules as proofs. Other studies are mostly based on soil engineering tests to study the stability of tailings dams under water erosion and the mechanism of dam failure, and the theory used is often based on unsaturated soil mechanics. It has not been able to give a positive and accurate explana...

Claims

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Application Information

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IPC IPC(8): E02B1/02
CPCE02B1/02
Inventor 姚美良刘海明赵超周小贵
Owner KUNMING UNIV OF SCI & TECH
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