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昆河线402+200～450m路段的地层是元古宇变质云母片岩,历次的构造运动及长久的风化作用,使该路段地表形成不稳定的堆积层滑坡体,虽然做过数次抗滑挡墙治理,但路基仍然发生多次滑坡。对滑坡成因进行综合分析,决定采用预应力锚索板框架工艺作为该项处滑坡治理方案。通过对预应力锚固设计与施工工艺的分析,说明该技术的应用在滑坡治理工程中的作用。工种治理中进行了如锚索抗拔试验、压浆柱质量检验和钢绞线极限强度试验等一系列测试,结果证明,该技术的各项技术指标均达到或大于设计要求,治理经验可供同类工程借鉴。
The strata in the 402 + 200 ~ 450m section of the Kunlun River are the metamorphic mica-schists in the Yuan-Guyu area, and the previous tectonic movements and long-term weathering have made the surface of the Kunlu River a unstable buildup landslide. Although anti-slip retaining walls However, the subgrade still suffered many landslides. Comprehensive analysis of the causes of landslide, decided to use prestressed anchor plate frame process as the landslide control program. Through the analysis of prestressed anchorage design and construction process, the role of this technology in the landslide control project is illustrated. A series of tests such as cable pull-up test, grouting column quality test and strand ultimate strength test were carried out in the management of work types. The results showed that all the technical indexes of the technology meet or exceed the design requirements and the management experience is available Reference for similar projects.