【摘要】：高速遠(yuǎn)程滑坡不僅具有運動機(jī)理復(fù)雜、危害大、發(fā)生突然等特點,而且滑坡在運動中經(jīng)歷了斜坡加速、坡腳碰撞、偏轉(zhuǎn)持速效應(yīng)、減速堆積的過程。通過室內(nèi)滑坡模型試驗,研究了巖土體類型、偏轉(zhuǎn)角和下墊面對高速遠(yuǎn)程滑坡運動特征的影響。試驗結(jié)果表明:滑坡體的運動距離受控于巖土體類型,隨著偏轉(zhuǎn)角的增大,滑坡運動距離減小,最大堆積厚度增加,同時偏轉(zhuǎn)角對滑坡體有明顯的顆粒篩分現(xiàn)象。下墊面摩擦類型對滑坡運動參數(shù)具有明顯的作用,影響滑坡體最終的堆積形態(tài)。試驗結(jié)果為深入研究滑坡運動速度、運動距離及堆積形態(tài)提供了重要的參考依據(jù)。
[Abstract]:High-speed remote landslide not only has the characteristics of complex motion mechanism, great harm and sudden occurrence, but also experienced the process of slope acceleration, slope foot collision, deflection velocity effect and deceleration accumulation. The effects of rock and soil type, deflection angle and underlay on the movement characteristics of high speed and long distance landslide were studied by laboratory landslide model test. The results show that the movement distance of landslide is controlled by the type of rock and soil. With the increase of deflection angle, the distance of landslide motion decreases and the maximum accumulation thickness increases. At the same time, the deflection angle has obvious particle screening phenomenon for landslide body. The friction type of the underlying surface has an obvious effect on the landslide motion parameters and affects the final accumulation form of the landslide body. The experimental results provide an important reference for the further study of landslide movement velocity, movement distance and accumulation shape.
【作者單位】： 西南科技大學(xué)土木工程與建筑學(xué)院;
【基金】：國家自然科學(xué)基金項目(41272297) 四川省科技廳項目(2014JY0121) 四川省教育廳重點項目(14ZA0095) 西南科技大學(xué)研究生創(chuàng)新基金項目(16ycx079)
【分類號】：P642.22

【參考文獻(xiàn)】

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