深奥隧道出口滑坡成因分析及防治研究

Analysis and Research on Landslide Formation and Control at the Exit of Shen'ao Tunnel

拟建杭黄客运专线深奥隧道出口滑坡为典型的崩塌堆积体滑坡。针对此类滑坡,详细论述了滑坡区工程地质特征和滑坡基本特征;计算模型采用《建筑边坡工程技术规范》中的传递系数法对滑坡稳定性进行计算,分析其变形破坏特征及其形成机制,对滑坡的稳定性、发展趋势和可能造成的危害等进行评价。结果显示,该崩塌堆积体滑坡基本稳定。为了施工和工程安全,应对滑坡进行加固,并提出经济合理的工程防治方案。

The Landslide at the Exit of Shen＇ao Tunnel in the proposed Hangzhou- Huangshan passenger dedicated line is a typical collapse accumulation landslide. Aiming at this kind of landslide,this paper described engineering geological feature and basic feature of the landslide in details; adopted the calculation model to calculate the stability of landslide by using the transfer coefficient method in Technical Code for Building Slope Engineering,analyzed the deformation and fracture features and formation mechanism,and made an evaluation on the stability,development trend and possible hazard of landslide. Results show that the collapse accumulation landslide is basically stable. For the construction and engineering security,the landslide shall be reinforced,economic and reasonable control engineering schemes shall be put forward.