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Vacuum pre-compression water-drainage consolidation method for uranium tailings mud

A technology of drainage consolidation and tailings slime, which is applied in the field of uranium tailings pond safety, to achieve the effect of saving treatment costs, improving long-term stability and high safety

Inactive Publication Date: 2020-08-07
THE FOURTH INST OF NUCLEAR ENG OF CNNC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical and mechanical properties of this ooze are very different from those of the natural foundation soft soil. At present, the vacuum preloading method for treating tailings sludge has not been applied at home and abroad.

Method used

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  • Vacuum pre-compression water-drainage consolidation method for uranium tailings mud
  • Vacuum pre-compression water-drainage consolidation method for uranium tailings mud

Examples

Experimental program
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Embodiment Construction

[0055] combine Figure 1-2 , a kind of uranium tailings mud vacuum preloading drainage consolidation method that the present invention proposes, comprises the following steps:

[0056] 1) Beach surface division of tailings reservoir

[0057] Divide tailings reservoir beaches into zones;

[0058] 2) Construction measurement

[0059] Carry out construction positioning and laying out and elevation measurement for each zone;

[0060] 3) lay geotextile 5 and geogrid 6

[0061] Lay geotextiles 5 and geogrids 6 sequentially from bottom to top on the upper part of each partition;

[0062] 4) lay sand cushion 7

[0063] Sand cushion layer 7 is evenly laid on geogrid 6;

[0064] 5) Set up plastic drainage board 1

[0065] Insert the plastic drainage board 1 at the sand cushion 7;

[0066] 6) Build a clay seal wall 4

[0067] Use clay sealing wall 4 to cut off the construction area and non-construction area of ​​each partition, so that the construction area is in a closed state;...

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Abstract

The invention belongs to the technical field of uranium tailings pond safety, and specifically discloses a vacuum pre-compression water-drainage consolidation method for uranium tailings mud, which improves safety of a tailings pond; and according to construction effect detection, shear strength of a vacuum pre-compressed tailings mud cross plate and bearing force of a site foundation are remarkably improved. The method provided by the invention can prevent a governed tailings pond beach face from long-term uneven settlement, effectively reduces water percolating capacity of a tailings pond dam body, reduces water seepage treatment cost of the tailings pond dam body, and shortens a period. The treatment cost of the vacuum pre-compression water-drainage consolidation method can be saved once or more in comparison with that of methods such as a surcharge preloading method, and safety is high. The construction process is simple, is low in requirements on equipment, is low in cost, and caneffectively improve long-term stability of the tailings pond. The vacuum pre-compression water-drainage consolidation method is wide in range of application, is suitable for the uranium tailings pond, and also can be applied to treatment of other mine tailings mud.

Description

technical field [0001] The invention belongs to the technical field of uranium tailings pool safety, and in particular relates to a method for vacuum prepressing drainage and consolidation of uranium tailings mud. Background technique [0002] The uranium tailings pool is a major source of pollution for uranium mines. Once a dam failure occurs, a large amount of radioactive tailings will be lost out of the pool, which will cause radiation pollution to the downstream environment and seriously endanger the downstream ecological environment and public health. [0003] Uranium tailings slime is a kind of special soft soil, which is in flow-plastic-soft plastic state. It is a soft soil with high compressibility, high water content, low dry density, low water permeability and low strength. People and machines cannot enter it. The existence of mud will have a certain impact on the construction and long-term stability of the uranium tailings pond treatment project. If the tailings m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10E02D3/02E02D3/00
CPCE02D3/005E02D3/02E02D3/10
Inventor 李哲辉李玉雷郭大平胡良才张玉升于宝民崔玉峰谢凌峰蒋树武龙飞宇赵发曾姣红李献昌
Owner THE FOURTH INST OF NUCLEAR ENG OF CNNC
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