涪陵焦页老37号平台滑坡勘察与治理对策研究

Research on Investigation and Control Countermeasures for Landslide at Old Platform No.37 in Jiaoye, Fuling

摘要:

针对重庆市涪陵区焦页老37号平台因连续强降雨引发的滑坡灾害，研究其成因、稳定性特征及治理对策，为类似工程提供参考。基于现场勘察成果，结合工程地质条件分析，通过宏观稳定性评价、滑带土力学参数反演计算及破坏模式分析，揭示滑坡的形成机制，综合运用削坡减载、支挡加固、排水堵漏及后期监测等措施提出治理建议。该滑坡属牵引式滑移破坏，主要受强降雨和挡土墙修建形成的临空面影响，按饱和工况分析，滑带土力学参数反演结果显示弱变形区稳定系数为1.15（稳定），强变形区稳定性系数为1.01（欠稳定）。治理建议以抗滑桩支挡与地表排水系统为核心，辅以动态监测，有效提升边坡稳定性，降低灾害风险。

Abstract:

Aiming at the landslide hazards triggered by continuous heavy rainfall at old Platform No.37 in Jiaoye, Fuling District, Chongqing, the causes, stability characteristics and control countermeasures are studied in order to provide the references for similar projects. Based on field investigations and combined with the engineering geological analysis, the formation mechanism of landslide is revealed through the macroscopic stability assessment, and the inversion calculation of mechanical parameters and failure mode analysis of sliding zone soil. The control suggestions are proposed through comprehensively applying measures such as slope cutting and load reduction, retaining and reinforcement, drainage and leakage plugging, as well as later monitoring. This landslide belongs to a towed slip failure mainly affected by heavy rainfall and the open surface formed by the construction of retaining walls. According to the analysis of saturated conditions, the inversion results of the mechanical parameters of the sliding zone soil show that the stability coefficient of the weak deformation zone is 1.15 (stable), and the stability coefficient of the strong deformation zone is 1.01 (unstable). The control suggestions focus on anti-slide pile retaining and surface drainage systems, supplemented by dynamic monitoring so as to effectively upgrade the slope stability and reduce the hazard risks.