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Tailing dam built through barren rock
The invention relates to a tailing dam built through barren rock. The tailing dam comprises a primary dam body and a manmade loess dry beach, and is provided with an outer slope and an inner slope. The tailing dam is characterized in that according to constitute materials and requirements of all parts, in the primary dam body I, the barren stock in a stope is adopted as materials, the content of the barren rock with the particle size not larger than 2 mm is smaller than or equal to 10 percent, the particle size distribution in rock-disposal site is smaller than or equal to 1.4 m, the softening coefficient of the barren rock is larger than or equal to 0.8, the porosity of a body of the primary dam body is smaller than or equal to 30 percent, the inner friction angle of the body of the primary dam body is larger than or equal to 35 degrees, protection layers are arranged on the outer slope and dam top of the primary dam body, the protection layer of the outer slope comprises a loess layer, a reinforced geotextile layer and a sand gravel cushion layer from outside to inside in sequence, and the protection layer of the dam top comprises a dam top loess layer, a first sand gravel cushion layer, a dam top reinforced geotextile layer and a second sand gravel cushion layer from top to bottom in sequence; in the manmade loess dry beach II, the thickness of the manmade loess dry beach is not smaller than 0.7 m. Sub-dams can be built at the initial stage. The tailing dam built through the barren rock is high in safety, simple in building process, short in dam building period and high in efficiency.
Tailing dam built through barren rock
The invention relates to a tailing dam built through barren rock. The tailing dam comprises a primary dam body and a manmade loess dry beach, and is provided with an outer slope and an inner slope. The tailing dam is characterized in that according to constitute materials and requirements of all parts, in the primary dam body I, the barren stock in a stope is adopted as materials, the content of the barren rock with the particle size not larger than 2 mm is smaller than or equal to 10 percent, the particle size distribution in rock-disposal site is smaller than or equal to 1.4 m, the softening coefficient of the barren rock is larger than or equal to 0.8, the porosity of a body of the primary dam body is smaller than or equal to 30 percent, the inner friction angle of the body of the primary dam body is larger than or equal to 35 degrees, protection layers are arranged on the outer slope and dam top of the primary dam body, the protection layer of the outer slope comprises a loess layer, a reinforced geotextile layer and a sand gravel cushion layer from outside to inside in sequence, and the protection layer of the dam top comprises a dam top loess layer, a first sand gravel cushion layer, a dam top reinforced geotextile layer and a second sand gravel cushion layer from top to bottom in sequence; in the manmade loess dry beach II, the thickness of the manmade loess dry beach is not smaller than 0.7 m. Sub-dams can be built at the initial stage. The tailing dam built through the barren rock is high in safety, simple in building process, short in dam building period and high in efficiency.
Tailing dam built through barren rock
MI ZIJUN (author) / WANG HAIBIN (author) / ZHAO YONGZHI (author) / ZHAO XIMING (author) / WANG YONGZHANG (author) / BAI JUN (author)
2015-06-17
Patent
Electronic Resource
English
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