Construction method for loess shallow layer landslide protection by ardealite

Abstract

The invention discloses a construction method for loess shallow layer landslide protection by ardealite. The method is characterized by comprising the steps that: (1) anionic polyacrylamide and potassium chloride are prepared as an improver; (2) the ardealite, flyash and soil are prepared as a mixture; (3) the improver and the water are mixed in the mixture to prepare improved mixture mud; (4) a three-dimensional vegetation net is paved on a slope from top to bottom, and is fixed; and (5) a wet spraying method is adopted to spray the improved mixture mud twice to the surface of the slope; then, the improved mixture mud is uniformly mixed with grass seeds to once spray to the surface of the slope; a non-woven fabric is used to cover and fixedly bound; and water spraying and curing are performed each day. The method can meet the ecological afforestation protection and shallow layer landslide protection requirements of a loess slope, can consume the ardealite, reduces occupation of cultivated lands, reduces environmental pollution, and can promote the plant growth by available phosphorus.

Description

technical field [0001] The invention relates to the field of slope engineering, in particular to a construction method for phosphogypsum used in shallow loess landslide protection. Background technique [0002] The loess is collapsible, and the excavated slope is prone to landslide disasters under the condition of rainfall. Traditional protection methods mostly adopt engineering measures such as arched slope protection, sash beam slope protection, and mortar rubble slope protection. On the one hand, these methods are expensive, on the other hand, the gray protective design forms a large contrast with the surrounding landscape, and is likely to cause secondary landslide risks. [0003] Phosphogypsum is a by-product produced by the wet process of phosphoric acid produced by the reaction of phospholime and sulfuric acid in chemical plants. 1 ton of phosphoric acid is produced to produce about 5 tons of phosphogypsum. Phosphogypsum is a powdery material with almost no plastici...