Upstream type high-strength reinforced wide-top damming method and structure for fine-particle tailings

An upstream, high-strength technology, applied in infrastructure engineering, construction, water conservancy engineering, etc., can solve the problem that the calculation of dam safety and dynamic stability is difficult to meet the requirements of the code, the difficulty of direct dam construction with tailings, and the deposition of tailings ponds In order to improve the physical and mechanical properties, accelerate the drainage consolidation and improve the stability and safety factor

Inactive Publication Date: 2020-12-04
铜源国际工程设计研究有限公司
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Problems solved by technology

After this type of tailings enter the reservoir, the strength of the sedimentary beach of the tailings pond is low, and it is very difficult to directly build a dam with the tailings
Although some enterprises still use the tailing sand upstream method to directly construct the dam, the safety degree of the dam body,

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  • Upstream type high-strength reinforced wide-top damming method and structure for fine-particle tailings
  • Upstream type high-strength reinforced wide-top damming method and structure for fine-particle tailings
  • Upstream type high-strength reinforced wide-top damming method and structure for fine-particle tailings

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] Such as figure 1 Shown, a kind of fine-grained tailings upstream type high-strength reinforced wide-top dam construction method of the present invention comprises the following steps:

[0028] S1. Carry out riprap silting at a certain distance from the upstream side of the beach surface of the existing accumulation dam 2 to reinforce the beach surface to form a riprap silting area 3;

[0029] S2, laying high-strength reinforced and corrosion-resistant geotextile 5 on the reinforced beach surface formed after riprap silting is completed;

[0030] S3. On the top of the high-strength reinforced and corrosion-resistant geotextile 5, the sub-dam 4 is piled up by using ...

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Abstract

The invention relates to the technical field of tailing damming, and particularly relates to an upstream type high-strength reinforced wide-top damming method and structure for fine-particle tailings.According to the upstream type high-strength reinforced wide-top damming method and structure for the fine-particle tailings, strength reinforcement is conducted on the beach face of a current accumulation dam through riprap and silt squeezing, and the foundation strength of damming is guaranteed; tailing grading is conducted through a cyclone, direct damming is conducted through the underflow tailings of the cyclone, and high-strength geosynthetics are laid in the damming tailings at intervals; and the strength of a dam body is improved through the friction and clamping effects between the geosynthetics and the damming tailings, the standard penetration index of the tailings on the surface layer is greatly increased, the physical and mechanical properties of the tailings in the dam bodyare improved, and the stability and safety coefficient of the dam body is increased. By implementing the method, the stability of the tailing dam body under various operating conditions can be guaranteed, the construction difficulty is lowered, and investment is reduced.

Description

technical field [0001] The invention relates to the technical field of tailings dam building, in particular to a fine-grained tailings upstream type high-strength reinforced wide-top dam building method and structure. Background technique [0002] With the improvement of my country's mineral processing technology, the grinding particle size is getting finer and finer. In recent years, many gold mines, silver mines, and lead-zinc mines have used upstream tailings ponds with fine particle size, poor particle gradation, and high clay content. After this type of tailings enter the reservoir, the strength of the sedimentary beach of the tailings reservoir is low, and it is very difficult to directly build a dam with the tailings. Although some enterprises still use the tailings upstream method to build the dam directly, the safety degree of the dam body, especially the calculation of dynamic stability, is difficult to meet the requirements of the code. Many mining companies hav...

Claims

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Application Information

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IPC IPC(8): E02B7/00E02B3/12E02D3/08
CPCE02B3/122E02B7/00E02D3/08
Inventor 周玎王树王晶晶董垚李光兆韩超
Owner 铜源国际工程设计研究有限公司
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