公路工程
公路工程
공로공정
Highway Engineering
2015年
5期
18-22
,共5页
红粘土边坡%人工降雨%冲刷破坏
紅粘土邊坡%人工降雨%遲刷破壞
홍점토변파%인공강우%충쇄파배
red clay slope%artificial rainfall%failure test
红粘土边坡冲刷破坏的研究对工程设计和水土保持有着重要意义。以红粘土边坡为研究对象,进行了室内边坡冲刷模型试验,对边坡的冲刷破坏过程进行了全程观测,同时对降雨过程中边坡土体的含水率湿润锋面、孔隙水压力、坡体位移及滑动面破坏特征进行了监测,研究结果表明:从坡顶到坡脚水流侵蚀能力呈递增趋势,坡脚处的侵蚀破坏最为严重。整个降雨过程中未见明显的滑动面,验证了降雨条件下红粘土边坡的破坏和其它土类不同。
紅粘土邊坡遲刷破壞的研究對工程設計和水土保持有著重要意義。以紅粘土邊坡為研究對象,進行瞭室內邊坡遲刷模型試驗,對邊坡的遲刷破壞過程進行瞭全程觀測,同時對降雨過程中邊坡土體的含水率濕潤鋒麵、孔隙水壓力、坡體位移及滑動麵破壞特徵進行瞭鑑測,研究結果錶明:從坡頂到坡腳水流侵蝕能力呈遞增趨勢,坡腳處的侵蝕破壞最為嚴重。整箇降雨過程中未見明顯的滑動麵,驗證瞭降雨條件下紅粘土邊坡的破壞和其它土類不同。
홍점토변파충쇄파배적연구대공정설계화수토보지유착중요의의。이홍점토변파위연구대상,진행료실내변파충쇄모형시험,대변파적충쇄파배과정진행료전정관측,동시대강우과정중변파토체적함수솔습윤봉면、공극수압력、파체위이급활동면파배특정진행료감측,연구결과표명:종파정도파각수류침식능력정체증추세,파각처적침식파배최위엄중。정개강우과정중미견명현적활동면,험증료강우조건하홍점토변파적파배화기타토류불동。
Research on rainfall erosion of red clay slope is of great significance to engineering de-sign and soil conservation.In this paper red clay slope was taken as research object,model test of rainfall erosion was done in laboratory,whole erosion process of the slope was observed,and the moisture in soil mass was monitored during the test.From the test result it was found the infiltration area at toe of the slope was larger than other positions,degree of erosion there also was the most serious.The paper analyzed water content,the moist frontal edge,power water pressure,slope displacement and sliding surface during the rainfall.The result was shown that the erosion capacity of water flow was increasing from top to toe of the slope,the degree of erosion at toe of the slope was the most serious.The clear sliding surface has not been taken place during the rainfall,which is not different from its clay slope.