摘要
对抢险土工包这种新型的抢险堵口材料进行了抛掷沉降运动的概化模拟试验研究 ,建立了土工包沉降速度的计算模式 .针对黄河一般的堵口水流特点及现实施工条件 ,根据设计水流条件和土工包的几何、材料特性 ,进行了不同条件、多组次的水槽概化试验 .通过试验观察与实测资料整理 ,分析了土工包沉降力学机理、落地稳定性及偏移运动过程 ;给出了不同条件下的土工包沉落速度、横向偏移量以及用于土工包沉降计算的有关参数 .水槽概化模拟试验中得出的有关数据 ,可供土工包抢险设计。
The generalized experimental study on the settling motion of a large earth bag, and a new pattern of mechanical practices for damming and wrecking, have been done and a computing model of settling velocity has been established. In light of the flow properties of the Yellow River and current construction condition, the authors have done various channel experiments according to designed flow condition and geometrical_material properties of the large earth bag. By the observation of experiments and compilation of measured data, settling mechanism, stability on the bed and cross displacement have been studied. Then the fall velocity, cross displacement and some coefficient for setting simulation calculation of the large earth bag also have been given. Associated result with generalized experiment can be referenced for the design of wrecking construction with large earth bag.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2002年第4期33-37,43,共6页
Engineering Journal of Wuhan University
基金
水利部 (国家防办 )重点科研资助项目 (SZ986 1)
关键词
试验
堵口口门
土工包
重力相似
横向偏移
绕流阻力
bursting cut of banks
large earth bag
gravity similarity
cross displacement
circumfluent resistance
