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国道317线川藏公路岗托至江达段有多处边坡滑坡。本文通过查明某边坡滑坡的工程地质条件,对滑坡进行变形情况分析及原因推断,在此基础上对滑坡进行稳定性分析,得出滑坡已处于滑动阶段,遇降雨等外界不利因素影响,将产生滑动。在天然工况下对滑坡各断面进行指标反算,通过计算滑坡的稳定系数在天然状态下在0.98~1.00之间,处于不稳定状态,有可能产生整体滑动。此稳定性计算结果与滑坡变形现状较为吻合。最后给出滑坡的治理措施。
National Highway 317 Sichuan-Tibet Highway Gangtuo to Jiangda section has many landslides. Based on the analysis of the stability of the landslide and the conclusion that the landslide has been in the sliding stage, in the event of external adverse factors such as rainfall, Will produce slippage. Under natural conditions, the indexes of landslides are back-calculated. By calculating the stability coefficient of landslides in the natural state between 0.98 and 1.00, it is in an unstable state, which may lead to the overall sliding. The result of this stability is in good agreement with the status of landslide deformation. Finally, given the landslide control measures.