Technical study of recent years for hydrometallurgical separation of As from material containing Zn is simply instrospected in this article.

In the light of the influence on the factors such as the strength and altitude in the road construction of the gravel subbase with cement stabilization,this article proposes the measures of controlling the subgrade quality,mixing quality,water content of the mixed materials,delay time of operation,maintenance conditions and loose paving coefficients,etc.