摘要
降雨是引起边坡失稳的主要因素。对于系统锚杆支护的边坡,系统锚杆可以加固边坡,提高边坡的稳定性。为了研究在易降大雨的地区,仅依靠系统锚杆进行边坡加固是否安全的问题,基于瑞典条分法基本原理,通过公式法和数值法进行验证,对有无系统锚杆的边坡稳定性系数进行对比分析,得出随着降雨强度的不断增大,仅依靠系统锚杆提高边坡稳定性的能力呈现出递减的趋势这一结果。因此,在易发生大雨或暴雨的地区,仅施加系统锚杆进行加固边坡是不安全的。
Rainfall is the main factor causing slope instability.For the slope supported by the system bolt,the system bolt can strengthen the slope and improve the stability of the slope.In order to study whether it is safe to strengthen the side slope only by system anchoring bolt in the areas that are subject to rain,based on the Swedish article points method basic principle,verification is made by formula method and numerical method,and comparisons and analysis are carried out to the slope stability coefficient when with and without the system anchoring bolt.It is concluded that with the increasing of rainfall intensity,improvement the stability of the slope anchor ability only by the system shows a decreasing trend of the results,therefore,in areas prone to suffering heavy rain or storm,only applying system anchoring bolt to reinforce the slope is unsafe.
作者
李帅
林旺照
LI Shuai;LIN Wang-zhao(College of Civil Engineering,Shaoxing University of Arts and Sciences,Shaoxing 312000,China)
出处
《公路》
北大核心
2020年第4期47-51,共5页
Highway
基金
国家自然科学基金资助项目,项目编号51509154
浙江省自然科学基金资助项目,项目编号LQ16E090002。
关键词
边坡稳定性
系统锚杆
稳定性系数
公式法
数值法
边坡加固
降雨
瑞典条分法
slope stability
system bolt
stability coefficient
formula method
numerical method
slope reinforcement
rainfall
Swedish law
