公路边坡病害特征分析和处治方案  

Characteristic Analysis and Treatment Scheme of Highway Slope Diseases

作　　者：吴信明 WU Xinming(Wuchuan Highway Maintenance Institute,Wuchuan,Guangdong 524500,China)

机构地区：[1]吴川市公路养护所,广东吴川524500

出　　处：《黑龙江交通科技》2024年第10期43-46,51,共5页Communications Science and Technology Heilongjiang

摘　　要：为了保证公路边坡在运营期间的安全性,减少安全事故,分析了公路边坡病害的排查程序和排查重点,以云湛高速公路沿线的上边坡和下路堤为研究对象,对沿线的边坡病害开展详细调查,发现边坡存在落石、崩塌、滑坡、坡面冲沟等病害。同时,分析了边坡病害的时空分布特征和病害特征。对于落石、崩塌病害,选用SNS主动防护网和护面墙进行防护。对于边坡坡面冲沟病害,选用M7.5浆砌片石进行防护;对于滑坡病害,其对公路运营安全影响最大,提出用预应力锚索框架梁进行处治,并建立计算模型,计算了边坡在不同预应力锚索布置间距下的稳定系数,发现锚索布置间距为2.0 m时边坡稳定系数最大,加固效果最佳,这说明预应力锚索加固滑坡方案是可行的。In order to ensure the safety of highway slopes during operation and reduce safety accidents,the investigation procedures and key points of highway slope diseases were analyzed.Taking the upper slope and lower embankment along the Yunzhan Expressway as the research objects,a detailed investigation was conducted on the slope diseases along the line,and it was found that there were rockfall,collapse,landslide,slope gully and other diseases on the slopes.At the same time,the spatiotemporal distribution characteristics and disease features of slope diseases were analyzed.For rockfall and collapse diseases,SNS active protective nets and protective walls have been choosed for protection.M7.5 mortar rubble is choosed for the protection of slope and gully diseases;For landslide diseases,which have the greatest impact on highway operation safety,it is proposed to use prestressed anchor cable frame beams for treatment,and a calculation model is established to calculate the stability coefficient of the slope under different spacing of prestressed anchor cables.It is found that the slope stability coefficient is the highest and the reinforcement effect is the best when the spacing of anchor cables is 2.0 m.This indicates that the prestressed anchor cable reinforcement scheme for landslides is feasible.

关 键 词：公路边坡 病害排查 分布特征 破坏特征 稳定系数 

分 类 号：U416[交通运输工程—道路与铁道工程]