凤庆机场场区土工格栅加筋高边坡设计

Design of the geogrid reinforced high slope in the field region of the Fengqing Airport

高边坡因失稳而发生滑坡灾害造成严重的社会影响和经济损失。为了探究高边坡的稳定性机理,采用土工格栅加筋设计。本文以云南凤庆机场场区内经典断面JS13-JS13′边坡为对象,首先基于机场场区的地质条件和高填方边坡等因素,提出土工格栅加筋设计方案;其次采用Geo-studio软件中计算岩土结构稳定性模块SLOPE/W,分别计算在天然、暴雨工况下边坡的稳定性安全系数;最后通过初步设计、初次调整、最终调整得到满足规范要求的安全系数的设计方案。结果表明:降雨对边坡的安全稳定性系数影响较大,而采用土工格栅加筋设计方案可有效地提高边坡安全系数,最终调整的设计方案在天然、暴雨工况下均能满足边坡稳定性规范要求。研究结果对机场高边坡失稳机理的研究以及防治具有重要的指导意义。

Landslide disasters caused by instability of high slopes cause serious social impacts and economic losses.In order to explore the stability mechanism of the high slope,the geogrid reinforcement design was adopted.This paper takes the classic section JS13-JS13′slope in the Fengqing Airport area of Yunnan as the object.Firstly,based on the geological conditions of the airport area and the high fill slope and other factors,the design scheme of geogrid reinforcement is proposed,Secondly,the Geo-studio software is used to calculate the geotechnical structure stability module SLOPE/W,and the stability safety factor of the slope under natural and heavy rain conditions is calculated respectively;Finally,through preliminary design,initial adjustment and final adjustment,a design scheme of safety factor that meets the requirements of the specification is obtained.The results show that the rainfall has a great influence on the safety and stability coefficient of the slope,and the design scheme of geogrid reinforcement can effectively improve the safety coefficient of the slope.Slope stability specification requirements.The research results have important guiding significance for the research and prevention of the instability of the airport high slope.