Construction method for using three-dimensional composite drainage mesh for diverting seepage of tailings stacked dam
A technology of tailings accumulation dam and three-dimensional composite, which is applied in the construction field of tailings accumulation dam using three-dimensional composite drainage network to conduct seepage, which can solve the problems of infiltration failure, complicated construction, and high cost of three-dimensional composite drainage network, and improve the management level , reducing the effect of safety
Active Publication Date: 2013-11-13
WENGFU (GRP) CO LTD
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Problems solved by technology
For the tailings accumulation dam seepage guide, after years of practical experience, it has been shown that the three-dimensional composite drainage net has the best seepage conduction effect. The three-dimensional composite drainage net is a new type of geosynthetic material, and the cost of the three-dimensional composite drainage net is relatively high. The construction is relatively complicated and poor process control will cause many hidden dangers such as piping, leakage, partial failure of seepage conduction, so the construction method is very important, but there is no construction specification in this regard
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Embodiment
[0026] A phosphate fertilizer factory of a limited liability company adopts the construction method of the tailings accumulation dam of the present invention utilizing a three-dimensional composite drainage network to guide seepage, comprising the following steps:
[0027] 1. Construction preparation:
[0028] (1) Adding dams and repairing slopes: When the height of the accumulation dam reaches about 2 meters, use a bucket excavator to repair the outer slope. The ratio of the outer slope of the tailings dam is controlled at 1:2.5~1:3. After the outer slope is repaired, the dam will be heightened. The height of the wet dam is increased by 2 meters, and the dry method does not need to increase the height, and then level the dam crest, the height difference should be less than 20cm, and the width of the dam crest should be greater than 25 meters;
[0029] (2) Water diversion division: If there is a lot of water accumulated in the tailings pond or the length of the dry beach is ...
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A construction method for using three-dimensional composite drainage meshes for diverting seepage of a tailings stacked dam includes the steps: firstly, making construction preparation; secondly, paying off lines; thirdly, digging trenches; fourthly, laying geotextile; fifthly, backfilling; and sixthly, discharging. The construction method is based on construction experiences practically concluded for years, is beneficial to popularization and application of the three-dimensional composite drainage meshes to seepage diversion for tailing stacking, and is beneficial to providence of construction guide, safety and environmental accidents of a tailings pond can be reduced, level of management of the tailings pond can be increased, and the method is applicable to the field of application of seepage diversion for tailings stacked dams.
Description
technical field [0001] The invention relates to the construction of drainage and infiltration, and furthermore, relates to a construction method for infiltration of a tailings accumulation dam using a three-dimensional composite drainage network. Background technique [0002] In order to reduce the infiltration line of the tailings storage dam, increase the internal friction angle of the dam body, reduce the osmotic pressure of the pore water in the dam, and thereby enhance the stability of the dam body, it is necessary to lay a seepage conductor at the foot of the dam. In terms of materials, there are many types of seepage guides, such as seepage guide pipes, geotextile gravel wraps, three-dimensional composite drainage nets, etc. For the tailings accumulation dam seepage guide, after years of practical experience, it has been shown that the three-dimensional composite drainage net has the best seepage conduction effect. The three-dimensional composite drainage net is a new...
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IPC IPC(8): E02D19/00
Inventor 秦正林
Owner WENGFU (GRP) CO LTD