砒砂岩类型区筑坝材料可行性分析

Feasibility Study of Material For Dam Construction in Pisha Rock Areas

对黄河中游砒砂岩分布区的黄土、沟床沙、红砒砂岩风化物、白砒砂岩风化物的有机质与易溶盐含量、颗粒组成、渗透性、可塑性、抗剪强度等指标的测定分析表明，黄土、沟床沙、红砒砂岩风化物这三种材料是良好的筑坝材料，并可作为防渗材料；白砒砂岩风化物属不良级配土，但与红砒砂岩风化物混合可互补不足，仍可作为筑坝材料。

Measurement and analysis of series of indices as organic material content, soluble salt content, grain size composition, permeability, plasticity, shear strength and others in loess, river bed sand, red Pisha rock weathered material and white Pisha rock weathered material in the Pisha rock region in the middle Yellow River demonstrate that loess, river bed sand and red Pisha rock material are three kinds of good materials for dam construction and can be also used as anti-seepage materials; while white Pisha rock weathered material is one of inferior soil but it can be still used as for dam construction when it is mixed with red Pisha rock weathered material.