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一、倒T形挡土墙1. 采用标准《道路土工、挡土墙、涵洞、临时结构物指南》(1977年1月日本道路协会)
First, the inverted T-shaped retaining wall 1. Standard “Road Geotechnical, retaining walls, culverts, temporary structure guide” (January 1977 Japan Road Association)