关键词: 尾矿砂, 砾石土覆盖, 沙害, 工程治理

Abstract: The wind erosion,transportation,deposition and shifting in the air of tailings sands can cause damages to soil,atmosphere,water bodies,roads,buildings and crops.They are also harmful to human being's heal th.To control the damages is to fix the surface of the tailings sand.The gravel layer has a lot of good aspects,such as the durability,the big capacity to resist strong wind erosion,the expected feature to conserve water and the out-standing performance in heat preservation,so it is a excellent material to control sand damages.This measure do not cost much.With the gravel layer covering the tailings sands,there is no sand resource and natural vegetation can be established in the stable hatitat.In the second year after the gravel layer covering the tailings sands the coverage of the vegetation has meanly reached 15%~30% and 50% at some sections.

Key words: Tailings sands, Gravel covering, Sand calamity, Engineering control