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A platform for research: civil engineering, architecture and urbanism
Method for phosphogypsum slope sticking
The invention discloses a method for phosphogypsum slope sticking. The method includes the following steps that an area to be stuck of a mountain slope is cleaned first, the slope surface of the area to be stuck is trimmed, a layer of clay is uniformly laid in the area to be stuck, compacted and leveled, a lime milk layer is laid on the clay layer, air dried phosphogypsum residues are stacked close to the mountain slope, flattened through a bulldozer and rolled through a vibration rolling machine layer by layer until the dry density of the phosphogypsum residues reaches above 96% of the maximum dry density of the phosphogypsum residues, the outer slope surface of a phosphogypsum slope is compacted and leveled, a seepage-proofing film, namely an HDPE film is laid on the outer slope surface, the HDPE film is shaped according to the slope shape, and finally another layer of clay is laid on the HDPE film of the outer surface of the slope. By the adoption of the method for phosphogypsum slope sticking, a reliable base layer is provided for the HDPE film, the lime milk layer is additionally laid, acid solutions generated when phosphogypsum reacts with water can be effectively neutralized, especially, free fluorinions formed when the phosphogypsum reacts with water are precipitated, and groundwater pollution and environmental pollution caused by permeation can be reduced.
Method for phosphogypsum slope sticking
The invention discloses a method for phosphogypsum slope sticking. The method includes the following steps that an area to be stuck of a mountain slope is cleaned first, the slope surface of the area to be stuck is trimmed, a layer of clay is uniformly laid in the area to be stuck, compacted and leveled, a lime milk layer is laid on the clay layer, air dried phosphogypsum residues are stacked close to the mountain slope, flattened through a bulldozer and rolled through a vibration rolling machine layer by layer until the dry density of the phosphogypsum residues reaches above 96% of the maximum dry density of the phosphogypsum residues, the outer slope surface of a phosphogypsum slope is compacted and leveled, a seepage-proofing film, namely an HDPE film is laid on the outer slope surface, the HDPE film is shaped according to the slope shape, and finally another layer of clay is laid on the HDPE film of the outer surface of the slope. By the adoption of the method for phosphogypsum slope sticking, a reliable base layer is provided for the HDPE film, the lime milk layer is additionally laid, acid solutions generated when phosphogypsum reacts with water can be effectively neutralized, especially, free fluorinions formed when the phosphogypsum reacts with water are precipitated, and groundwater pollution and environmental pollution caused by permeation can be reduced.
Method for phosphogypsum slope sticking
WANG HUAN (author) / HUANG GUANGZHU (author) / YAN YONGGANG (author) / TANG TINGPING (author) / WEN XIAOBING (author) / OUYANG LONG (author) / ZHANG JUN (author)
2015-04-01
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
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