重力式挡土墙建立在桥台的下游护坡上，墙的基础由桩和筏板构成。
The retaining-wall foundation is built on the downstream bank slope of the bridge abutment, which stability cannot meet the requirement of specification.
对上下游护坡的要求是坚固耐久，能抵抗各种因素的破坏作用，并保证底层不受淘刷。
Revetments must be sturdy and durable, able to resist damages caused by various factors. Their undercourse must not be scoured.
均质坝下游护坡的作用是防止雨水冲刷，风浪、冰层和水流作用，动物、冻胀干裂等对坝坡的破坏。
For downstream of homogeneous DAMS, damages caused by rain scouring, storm, ice, stream, animal, swelling, and mud crack must be avoided.
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