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中文摘要：
为了研究竹城公路层状岩质边坡的稳定性及防治措施，通过现场调查和赤平投影分析边坡潜在变形滑动机理；利用UDEC软件建立层状边坡数值计算模型，分析开挖过程中岩土体的变形情况；根据变形破坏模式提出层状岩质边坡的长短锚杆交替复合支护结构。研究结果表明：浅层滑动和楔形体滑动破坏是该公路边坡的主要破坏模式；开挖完毕后左侧边坡存在稳定性隐患；当边坡开挖到第4步时，将发生滑移破坏；长短锚杆交替复合支护结构充分利用了锚杆和岩土体的受力特性，有效加固了边坡。
英文摘要：
In order to study the stability of stratified rock slope in Zhu-Cheng road and its reinforcement method, the potential deformation and slipping mechanism of slope were analyzed using insitu-investigation and stereographic projection analysis method. The numerical calculation model for stratified rock slope was founded with UDEC software. The deformation of rock mass was analyzed in the excavation procedure, and the long-short compound bolt reinforcement structure was proposed according to the deformation failure mode of stratified rock slope. The results show that shallow slipping and wedge slipping are the main failure modes for the studied slope. The slope in the left side is in the unstable state after excavation. The slope will slip while excavation goes through the fourth excavation without reinforcement. The long-short compound bolt reinforcement system can make full use of the mechanical characteristic of bolt and rock mass, and then reinforces slope structure.
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