水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
Journal of Water Resources and Architectural Engineering
2015年
5期
112-116
,共5页
滑移速度%SPH深度积分法%摩擦流变模型%侵蚀效应
滑移速度%SPH深度積分法%摩抆流變模型%侵蝕效應
활이속도%SPH심도적분법%마찰류변모형%침식효응
sliding velocity%SPH depth integral model%frictional rheological model%erosion effect
滑坡会对工程结构物造成严重破坏,滑移速度和距离是量化和分析滑坡的两个重要参数。针对滑移速度和距离预测一直比较复杂的现状,建立考虑土体固结和侵蚀效应的控制方程,选用摩擦流变模型,采用SPH深度积分算法,对滑坡进行了模拟研究。对比不同坡度、接触摩擦系数和侵蚀率条件下的滑移体速度、长度的时程曲线,分析不同条件下滑移体的最终沉积形态,整理了最大滑移距离和速度,讨论其变化规律。研究成果可为滑坡灾害预警提供技术参考。
滑坡會對工程結構物造成嚴重破壞,滑移速度和距離是量化和分析滑坡的兩箇重要參數。針對滑移速度和距離預測一直比較複雜的現狀,建立攷慮土體固結和侵蝕效應的控製方程,選用摩抆流變模型,採用SPH深度積分算法,對滑坡進行瞭模擬研究。對比不同坡度、接觸摩抆繫數和侵蝕率條件下的滑移體速度、長度的時程麯線,分析不同條件下滑移體的最終沉積形態,整理瞭最大滑移距離和速度,討論其變化規律。研究成果可為滑坡災害預警提供技術參攷。
활파회대공정결구물조성엄중파배,활이속도화거리시양화화분석활파적량개중요삼수。침대활이속도화거리예측일직비교복잡적현상,건립고필토체고결화침식효응적공제방정,선용마찰류변모형,채용SPH심도적분산법,대활파진행료모의연구。대비불동파도、접촉마찰계수화침식솔조건하적활이체속도、장도적시정곡선,분석불동조건하활이체적최종침적형태,정리료최대활이거리화속도,토론기변화규률。연구성과가위활파재해예경제공기술삼고。
Landslides can cause serious damages to the structure of the engineering ,sliding velocity and distance are two important parameters in the quantification and analysis of landslides .However ,the existing prediction method of sliding velocity and distance is complicated .In view of this situation ,a governing equation was established considering soil con-solidation and erosion effect .The SPH depth integral method was used to simulate landslides by the selected frictional rheological model .Comparing the time history curve of velocity ,length of sliding body under the different conditions of slope angle ,contact frictional coefficient and erosion rate ,the final deposit shapes of the sliding body were analyzed ,the maximum sliding distance and velocity were summarized and the underlying influence of related physical parameters were discussed .These research results can provide some technical reference for the disaster warning of landslides .