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近十几年来,在美国各州的公路路基工程中,出现了不少整治路基边坡的新方法。这些整治措施的基本原则可以概括为二大类型。即(1)减少促使路基边坡向下移动的下滑力和(2)增加抵抗路基边坡向下移动的抗滑力。在土质边坡中,边坡滑动的主要原因是由于部分土体产生的重力和土中水产生的各种压力而引起的。因此减少下滑力最通常的方法,就是减轻这部分可能滑动土体的重量和排除土中存在的水。
In the past ten years or so, a lot of new methods have been put in place for the improvement of subgrade slope in highway subgrade projects in various states of the United States. The basic principles of these remediation measures can be summarized into two types. Namely (1) to reduce the sliding force that causes the subgrade slope to move downward and (2) to increase the anti-sliding force that is resistant to the downward movement of the subgrade slope. In the soil slope, the main reason for the slope sliding is due to the gravity generated by some soil and the pressure caused by the water in the soil. Therefore, the most common way to reduce the sliding force is to reduce the weight of this part of the sliding body and to eliminate the water present in the soil.