考虑滑道坡度和宽度的滑坡模型试验研究

发布时间：2018-03-15 06:05

  本文选题：模型试验　切入点：滑坡-碎屑流　出处：《岩土力学》2017年05期 　论文类型：期刊论文

【摘要】：通过开展小尺寸的室内模型试验,研究了在不同滑道坡度和滑道宽度下,滑坡-碎屑流的运动和堆积特性。试验结果发现:斜坡坡度增大时,对于细颗粒堆积体,其冲程和平面覆盖面积均变大;对于粗颗粒堆积体,其冲程和平面覆盖面积均先变大后变小;两者的堆积宽度均减小、堆积厚度均增加。滑道宽度对滑坡运动影响显著,滑道宽度增加时,其冲程出现小幅度的增加,而平面覆盖面积和堆积宽度均出现较大幅度的增加,堆积厚度则变小;滑道出口宽度对滑体最终堆积范围影响显著,而滑道入口宽度的影响则相对较小。试验研究成果为滑坡-碎屑流堆积范围及堆积形态影响因素的探究提供了一定的理论参考价值。
[Abstract]:The movement and accumulation characteristics of landslide-clastic flow under different slope and width of slide track are studied by using small scale indoor model tests. The results show that when slope gradient increases, fine grain accumulations can be obtained. The stroke and plane coverage area become larger, for coarse grain accumulations, the stroke and plane coverage area first become larger and then become smaller, the stacking width of both decreases and the accumulation thickness increases, and the slide path width has a significant effect on the landslide movement. When the width of the slide track increases, the stroke increases slightly, while the plane coverage area and the stacking width increase by a large margin, and the accumulation thickness becomes smaller, and the width of the exit of the slide track has a significant effect on the final stacking range of the slider. However, the influence of the entrance width of the slide track is relatively small. The experimental results provide a certain theoretical reference value for the study of the accumulation range of landslide and debris flow and the influence factors of the accumulation form.
【作者单位】： 合肥工业大学土木与水利工程学院;合肥工业大学土木工程结构与材料安徽省重点实验室;湖北省电力勘测设计院;
【基金】：国家自然科学基金项目(No.51179043) 水利部公益项目(No.201401063)~~
【分类号】：P642.22
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