盾构渣土改良评价指标的探讨

Discussion on Evaluation Index of Shield Soil Conditioning

土压平衡盾构顺利施工的关键是将土压舱渣土改良至理想状态,盾构渣土的理想状态需要通过渣土改良评价指标来界定,文中从渣土的塑流性、渗透性、抗剪强度以及压缩性四个方面对渣土改良评价指标进行了探讨。

The key to the smooth construction of EPB shield is to improve the shield soil to an ideal state. The ideal state of shield soil needs to be determined by the evaluation index of soil conditioning. This paper discusses the evaluation index of soil conditioning from four aspects :plasticity, permeability, shear strength and compressibility.