山区高速公路路堑高边坡工程施工安全总体风险评估技术探讨

Study of the Overall Risk Assessment Method for the Construction Safety of High Cut Slope of Highway in Mountainous Area

山区高速公路路堑高边坡具有数量多、施工周期短、地质背景条件复杂等显著特点,工程施工安全事故发生率高,进行施工安全风险评估工作十分必要。文章探讨了总体风险评估工作的方法和流程,从评估范围、野外工作、评估方法、风险分级管理等几个方面详细论述了评估的要点。并以云南某高速公路边坡为例,演绎边坡施工安全总体风险评估的详细过程,采用GeoStudio软件模拟分析边坡稳定性,验证了评估结果的可靠性,在此基础上提出了相对应的风险控制措施。文章对于其他类似工程项目具有一定的指导意义。

High cut slope of highway in mountainous area features with large in quantities,short construction period and complex geological conditions,and construction accident ratio is high that it is necessary to make construction safety assessment.In this paper,the methods and processes of the overall risk assessment are discussed,and the main points of the evaluation are discussed in details in terms of the assessment scope,field work,evaluation methods and risk classification management and so on.Taking a high cut slope on an expressway in Yunnan Province as an example,the detailed process of evaluating the overall risk during side slope construction is interpreted,GeoStudio software is used to simulated and analyze the slope stability to verify the reliability of evaluation results.On the basis,the corresponding risk control measures are put forward.This paper has important guiding significance for other similar projects.