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Experiment device and experiment method for overtopping failure simulation for tailing dam

An experimental device and a technology for simulating experiments, applied in the field of mine geotechnical engineering, can solve problems such as the inability to accurately understand the development process of dam erosion, the huge amount of on-site experimental engineering, and the erosion of downstream dam slopes.

Inactive Publication Date: 2014-10-29
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Rainfall is an important factor that causes the tailings dam to break. When the rainfall intensity is too high, the tailings pond will not be able to discharge the flood water in time due to the lack of sufficient flood control storage capacity or the blockage or damage of the flood drainage system, and the flood will overflow the dam. After the top, the downstream dam slope will be scoured, and the hydraulic scouring will continuously damage the dam structure and eventually cause the dam to collapse; however, due to the lack of accurate and complete on-site measurement data of the dam collapse, and the field experiment is difficult to carry out due to the large amount of engineering and the long test period , so the research on the development mechanism of tailings dam flood top collapse is not clear at present, and it is impossible to accurately understand the development process of dam body erosion

Method used

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  • Experiment device and experiment method for overtopping failure simulation for tailing dam
  • Experiment device and experiment method for overtopping failure simulation for tailing dam
  • Experiment device and experiment method for overtopping failure simulation for tailing dam

Examples

Experimental program
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Embodiment 1

[0043] An experimental device for simulating overtop failure of a tailings dam, comprising a simulated experimental container A, a simulated rainfall device B and a slope-changing device C.

[0044] The experimental container A is a container with an open upper end. In the embodiment, the experimental container A is composed of a transparent front baffle 1 , a rear baffle 2 , a left baffle 3 , a right baffle 4 and a bottom plate 5 . The front baffle 1 , the rear baffle 2 , the left baffle 3 and the right baffle 4 are all transparent materials, and the slope changing plate 19 is a steel plate. The bottom end of the bottom plate 5 has a bracket 6 . The bottom plate 5 is provided with a drain hole 7 .

[0045] The simulated rainfall device B is located above the experimental container A. During the experiment, the simulated rainfall device B sprayed water into the experimental container A below. see attached image 3 The simulated rainfall device B includes: a water pipe 10,...

Embodiment 2

[0054] This embodiment adopts the device described in Embodiment 1 to carry out the experiment of simulating the failure of the tailings dam overflow roof, which mainly includes the following steps:

[0055] 1) Put the obtained tailings sample into a drying oven for drying, the drying oven temperature is controlled at 105°-110°, and the drying time is 8-10 hours.

[0056] 2) Incline the slope changing plate 19 at 30°, turn the nut 23 so that the nut 23 presses the inner side of the rear baffle 2, and the angle of the slope changing plate 19 will be fixed at 30°.

[0057] 3) The compaction index of the tailings dam body is controlled by dry density, the volume of the tailings sample is calculated by its corresponding container volume when the dry density is calculated, the mass of the tailings sample is obtained by actual weighing, and the compacted dry density of the tailings sample is controlled at 1.7g / cm 3 Left and right, the tailings sample is located on one side of the v...

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Abstract

The invention relates to an experiment device and an experiment method for overtopping failure simulation for a tailing dam, which belong to the field of mine geotechnical engineering. The experiment device disclosed by the invention comprises a simulated experiment container, a simulated rainfall device and a gradient change device, wherein the simulated rainfall device is installed above the simulated experiment container. The experiment device disclosed by the invention is capable of simulating the overtopping failure conditions for the tailing dam under different rainfall intensities and different tailing dam slope angles.

Description

technical field [0001] The invention relates to the field of mine geotechnical engineering, in particular to an experimental device for simulating flood-roof failure of tailings dams, which is mainly used for indoor simulation of flood-roof failure of tailings dams. Background technique [0002] With the increasing demand for resources in human society, a large number of tailings will be generated when the mineral resources are developed and utilized. The construction of tailings dams for tailings discharge is the most commonly used tailings storage method, and it is also an important production method for mining enterprises. When a large amount of tailings are deposited in front of the dam, the tailings dam together with a large amount of tailings slurry in the tailings pond will form a high potential energy source of artificial debris flow hazard. Facts have repeatedly shown that once the tailings dam fails, it will cause huge disasters and losses to industrial and agricul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/00
Inventor 杜艳强杨春和张超巫尚蔚霍亮魏元龙
Owner CHONGQING UNIV
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