【作者】 苏洁； 周成； 何宁； 何建村； 吴艳；

【Author】 Su Jie;Zhou Cheng;He Ning;He Jiancun;Wu Yan;State Key Laboratory of Hydraulics and Mountain River Engineering,College of Water Resource & Hydropower,Sichuan University;Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-rock Dam of the Ministry of Water Resources,Nanjing Hydraulic Research Institute;Xinjiang Hydraulic and Hydropower Research Institute;

【机构】 四川大学水力学与山区河流开发保护国家重点实验室水利水电学院； 水利部土石坝破坏机理与防控技术重点实验室、南京水利科学研究院； 新疆水利水电科学研究院；

【摘要】 在人工阶梯深潭泥石流治理技术的基础上提出适宜于小流域或支、毛沟防护的拱式生态护岸技术。拱式生态护岸是指在岸坡坡脚修筑L型石笼挡墙,在沟谷中间隔一定距离顺应地势抛填块石形成倒拱,有效地将岸坡土体下滑推力传递到沟谷底部并互相支撑。该技术结合生态护坡理念,在河谷两岸种植根系发达的乔、灌、草组合的多样植被,提高坡积体强度,改善流域的水文特性,抑制浅层滑坡和崩岸的发生。数值模拟表明:植被固土可约束边坡的变形,减小滑坡推力,护脚处柔性石笼可变形自适应,释放滑坡推力,抛石倒拱形基础可有效抑制坡面泥石流。更多还原

【Abstract】 Based on the artificial step-pool system for controlling debris flows,an arch ecological revetment was designed to protect the bank slope of small watershed or branch ditch. The arch ecological revetment was a structure of arch shape in the cross profile of gully,which was constructed by building L-shaped gabion retaining wall along the toe of slope and casting rock block along the bottom of the gully. Sliding thrust of the slope soil was transformed to the valley floor through the arch structure. In addition,some arbor,shrub and herbage with extensive roots were needed for both banks. Plants could improve the strength of the soil and the hydrologic characteristics of the catchment,thus the shallow landslide and bank caving could be restrained. The numerical simulation indicated that plants could reduce the landslide thrust by restraining slope displacement, flexible gabion could release earth pressure by appropriate deformation and arch riprap base could prevent slope debris flow.更多还原