佳木斯大学学报（自然科学版）
佳木斯大學學報（自然科學版）
가목사대학학보（자연과학판）
JOURNAL OF JIAMUSI UNIVERSITY (NATURAL SCIENCE EDITION)
2014年
1期
24-28
,共5页
颗粒粒径%室内模型试验%形成模式%滑坡型破坏%流滑型破坏
顆粒粒徑%室內模型試驗%形成模式%滑坡型破壞%流滑型破壞
과립립경%실내모형시험%형성모식%활파형파배%류활형파배
particle size%model test%formation type%sliding failure%fluidized flow failure
为研究泥石流受土体颗粒粒径的影响，将细砂和中砂按不同质量比配置6组不同颗粒粒径的试验试样，进行泥石流室内模型试验。试验结果表明：颗粒粒径对泥石流的形成模式具有重要影响，随着细砂含量的增加，泥石流的形成模式从滑坡型破坏变为流滑型破坏。当细砂含量小于40％时，坡体分层块体下滑，发生滑坡型破坏；当细砂含量大于40％时，坡体整体快速下滑，发生流滑型破坏。分析中砂坡体泥石流形成过程中孔隙水压力变化规律，揭示了降雨作用下泥石流形成过程中水土作用关系。本文结果为泥石流研究提供理论参考价值。
為研究泥石流受土體顆粒粒徑的影響，將細砂和中砂按不同質量比配置6組不同顆粒粒徑的試驗試樣，進行泥石流室內模型試驗。試驗結果錶明：顆粒粒徑對泥石流的形成模式具有重要影響，隨著細砂含量的增加，泥石流的形成模式從滑坡型破壞變為流滑型破壞。噹細砂含量小于40％時，坡體分層塊體下滑，髮生滑坡型破壞；噹細砂含量大于40％時，坡體整體快速下滑，髮生流滑型破壞。分析中砂坡體泥石流形成過程中孔隙水壓力變化規律，揭示瞭降雨作用下泥石流形成過程中水土作用關繫。本文結果為泥石流研究提供理論參攷價值。
위연구니석류수토체과립립경적영향，장세사화중사안불동질량비배치6조불동과립립경적시험시양，진행니석류실내모형시험。시험결과표명：과립립경대니석류적형성모식구유중요영향，수착세사함량적증가，니석류적형성모식종활파형파배변위류활형파배。당세사함량소우40％시，파체분층괴체하활，발생활파형파배；당세사함량대우40％시，파체정체쾌속하활，발생류활형파배。분석중사파체니석류형성과정중공극수압력변화규률，게시료강우작용하니석류형성과정중수토작용관계。본문결과위니석류연구제공이론삼고개치。
Model test was carried out to study the influence of particle size on debris flow formation type . The fine sand and medium sand comprised 6 groups of different particle size test specimens in the ratio of differ-ent quality .The research manifested that particle size has great influence on debris flow formation type .With the increase of fine sand , the formation type of debris flow turned from sliding failure to fluidized flow failure .When fine sand content was lower than 40%, slope occured retrogressive sliding , sliding failure;when fine sand con-tent was more than 40%, the whole slope falled rapidly , fluidized flow failure .From the change regulation of pore water pressure in the process of sand slope debris flow , the interaction relationship between water and soil in the process of debris flow under rainfall was obtained .The results in this paper provide a theoretical reference value for the study on debris flow .
