基于Rocscience软件的岩质边坡稳定性分析研究  

Stability Analysis of Rock Slope Based on Rocscience Software

作　　者：马哲 马卓倩 胡鸿 邹榕 

机构地区：[1]浙江数智交院科技股份有限公司,浙江 杭州 [2]景宁畲族自治县交通运输局,浙江 丽水

出　　处：《土木工程》2024年第7期1152-1157,共6页Hans Journal of Civil Engineering

摘　　要：高速公路沿线的路堑边坡滑坡事故对驾车者和行人构成了重大威胁,本文在高速公路的测量站进行现场调查与资料收集,使用Rocscience系列软件中的Dips 7.0软件进行运动学分析,以识别高速公路沿线潜在的平面滑动破坏、楔形滑动破坏和倾倒破坏现象;结果表明:高速公路沿线存在平面滑动破坏、楔形滑动破坏和倾倒破坏风险。采用Rocscience系列软件中的Phase2软件对该高速公路的岩质边坡的稳定性进行研究;结果表明:即使没有孔隙压力的影响,边坡也仅处于基本稳定状态。当地下水位上升到边坡中段或更高时,将发生滑动破坏。此外,在地震条件下计算的强度折减系数值表明,地震活动对边坡稳定性具有很大的影响,边坡在地震作用下,更易发生滑坡事故。数值模拟结果和现场观测结果一致,表明该高速公路边坡存在较大的破坏风险,特别是在大降雨或地震活动期间。The landslide accidents along the highway cutting slopes pose a significant threat to drivers and pedestrians. This article conducts on-site investigation and data collection at measurement stations on the highway, and uses Dips 7.0 software in the Rocscience series for kinematic analysis to identify potential planar sliding failure, wedge-shaped sliding failure, and toppling failure phenomena along the highway;The results indicate that there is a risk of planar sliding failure, wedge-shaped sliding failure, and toppling failure along the expressway. Using Phase2 software from the Rocscience series to study the stability of the rock slope of the expressway, the results indicate that even without the influence of pore pressure, the slope is only in a basically stable state. When the groundwater level rises to the middle section or higher of the slope, sliding failure will occur. In addition, the strength reduction coefficient values calculated under earthquake conditions indicate that seismic activity has a significant impact on slope stability, and slopes are more prone to landslide accidents under earthquake action. The numerical simulation results are consistent with the on-site observation results, indicating that there is a significant risk of damage to the slope of the expressway, especially during heavy rainfall or seismic activity.

关 键 词：岩质边坡 稳定性分析 数值模拟 强度折减系数 

分 类 号：U41[交通运输工程—道路与铁道工程]