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

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...

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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, especially the calculation of dynamic stability, is difficult to meet the requirements of the code

Many mining companies have to choose one-time dam construction or waste rock dam construction to ensure the operation of tailings ponds, which not only increases operating costs but also increases management difficulties

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