The formation of piping is controlled by the structure, physical and mechanical properties of the soil for the base of dike and flood level.

管涌形成主要受控于堤基土体结构、土的物理力学性质和洪水位，经过不断改进的减压井等工程措施对防止管涌是有效的。

youdao

TGP aims at flood control, power generation and navigation, and the civil works and electro-mechanical works are the ma jor pillars for realization of such a target.

三峡水利枢纽工程以防洪、发电、航运为目标，土建工程和机电工程是实现这一目标的两大支柱。

youdao