混凝土防渗墙在土石坝工程中的应用与发展

对混凝土防渗墙在浙江省土石坝工程的应用与发展进行了介绍，并根据浙江省众多此类工程的应力应变计算成果、混凝土弹性模量与强度的取用等资料，强调了工程设计应依据防渗墙与周围土体的变形协调性能和边界条件，对墙体混凝土应选择不同的弹性模量进行应力应变计算分析。针对混凝土强度及其弹模特性，应在满足应力应变的前提下，重视混凝土耐久性等特性，确定最优的墙体强度及相对应的弹性模量。

Application of concrete cut-off wall to rock-earth dam and its development

The application of concrete cut-off to the construction of rock-earth dams in Zhejiang Province is introduced with its development. Based on a large number of the data from the stress-strain calculation results and the adoptions of the elastic moduli and strengths of the concrete for the similar projects in the province, it is emphasized that the stress-strain calculation and analysis for the cut-off concrete must be made with various elastic moduli in accordance with both the compatibility of deformation between the cut-off and the surrounding soil body and its boundary condition during the engineering design. Furthermore, it is put forward that great attention must be paid to the properties such as the durability of the concrete etc. for the strength and elastic modulus of the concrete and then the optimal strength of the cut-off and the relevant elastic modulus must be determined on the premise of satisfying the condition of stress-strain.