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连霍高速公路洛三段竣工通车的前夕 ,K 10 5坡间路基下边坡突然发生特大塌方 ,在 1h之内滑塌体积达 10余万 m3,从而导致右侧路基下陷近 5 m ,通车时间被迫延后 3个月。通过对该坡间路基塌方的发生、发展过程的研究 ,确定了对关键部位进行加固和一般部位恢复的加固方案。设计采用了“抗滑锚杆桩”、“重力式锚碇板挡土墙”方案实现对滑体关键部位的锁定和潜在滑移体的阻止和约束。本文选取某一剖面采用 FL AC2 D有限差分法计算软件对加固结构的性能和边坡的稳定性进行了分析 ,分析结果表明这一复合式加固方法是非常有效的 ,加固结构体和边坡都表现出了较好的稳定性
On the eve of completion of the third section of Luohu Expressway, the collapse suddenly occurred on the slope beneath the K 10 5 slope, with the volume of collapse over 1 million cubic meters within 1 hour, resulting in a subsidence of nearly 5 m on the right roadbed. Forced to postpone 3 months. Through the study of the occurrence and development of landslide in the slope, the reinforcement plan for the reinforcement of the key parts and the restoration of the general parts has been determined. The design adopted “anti-slide anchor rod” and “gravity anchor plate retaining wall” scheme to prevent and restrict the key part of the slide and the potential slip body. In this paper, the software FLAC2 D finite difference method was used to analyze the performance of a reinforced structure and the slope stability. The results show that this composite reinforcement method is very effective. Both the reinforced structure and the slope Showed a good stability