泥浆泵法筑坝中掺和物对泥浆排水的影响

摘要

以陕西白水县西武村附近大沟流域的土作为试验对象,在土样添加掺和物,与纯土样拌制的泥浆在沉陷固结、抗剪强度、排水情况方面进行对比.结果表明,泥浆中掺和水泥、沙子可促进泥浆中水分的排出,但是对泥浆沉陷固结影响作用不明显,泥浆中掺入水泥可增大泥浆的抗剪强度.此研究对于解决粘粒含量高的土在泥浆泵法筑坝时排水困难具有一定的理论和现实指导意义.%Effects of different admixtures on the drainage of soil slurry in dam construction with slurry pumping method were examined. The results showed that the addition of cement and sand in the slurry during dam construction could promote water discharge from slurry without weakening the solidification and sinking of the slurry. Also, the shear strength of the slurry could be enhanced after the cement was added.