Study of critical gradient of piping for various grain sizes in sandy gravels
砂砾土各级颗粒的管涌临界坡降研究
According to the flume tests and basic theovetical analysis, several important formulas describing nonuniform muddy flow transportation,such as nondepositing velocity,critical gradient and ditch phase factors are deduced.
在此基础上考虑推移部分影响,推导得出非均质泥流的不淤流速、临界坡降、沟道断面形态指标等重要的输移临界参数计算公式。
A brief analysis is carried out on the resulting conditions of sand gravel seepage deformation, on this basis, the modes of seepage deformation are assessed briefly and the calculation method of critical gradient for seepage deformation is presented.
对砂卵砾石的渗透变形的形成条件进行了简要分析 ,在此基础上对渗透变形的形式进行了简要评价 ,并提出了渗透变形临界坡降的计算方法。
A physical model has been established on quick sand of complete wells and at the bottom of semi-spherical wells for dyke foundations of double-layer structure, and the dynamic progress of quick sand based on critical hydraulic gradient is simulated in calculation examples by using the time-division stable flow theory.
通过算例采用分时段稳定流理论模拟了基于临界水力坡降的流砂动态发展过程,建立了双层结构堤基发生流土的完整井流砂和半球形井底流砂物理模型。
The exit gradient near singular points is very large,and it varies rapidly along the depth.
奇点附近的渗透出逸坡降甚大,且沿深度变化甚快,在模型试验中难以测定。
Study of critical gradient of piping for various grain sizes in sandy gravels
砂砾土各级颗粒的管涌临界坡降研究
A Study on Landslide Susceptivity Classification and Rainfall Threshold in Wanxiu District of Wuzhou City in Guangxi Zhuang Autonomous Region;
广西梧州市万秀区区域降雨型滑坡危险性区划及降雨临界值研究
critical rate of fall of commutating current
换向电流临界下降率
A Method for Calculating Critical Water Depth of Open Channel with Trapezoid Section and Smooth Slope
小底坡梯形明渠临界水深求法探讨
Numerical studies on the critical air velocity affected by tunnel slope
隧道坡度对临界风速影响的数值研究
Analysis of Slope Stability Based on Compositely ant Colony Algorithm
用复合蚁群算法确定边坡临界滑动面
Degradation of Polypropylene and Nitrile-Butadiene Rubber in Supercritical Water;
超临界水降解聚丙烯和丁腈橡胶研究
Depolymerization Behavior of PE in Supercritical Water;
聚乙烯在超临界水中的降解行为研究
Study on the Critical Speed of Settling Slurry in Horizontal Pipeline;
沉降性浆体水平管道临界流速的研究
LOWERING PRESSURE METHOD IN SPACECRAFTS
降压地面模拟技术中的临界压力研究
Statistical Inference of Probability Distribution for Critical Gradient of Silty Clay of Levee Foundation
堤基粉质黏土临界比降概率分布推断
Supercritical Water Oxidation for Treatment of Organic Wastewater with Poor Biochemical Degradation
难降解有机污水的超临界水氧化技术
Study on Critical Load of Acidic Deposition in Southern China
我国南方主要酸沉降区临界负荷研究
Study on Polystyrene Degradation in Supercritical Solvents
聚苯乙烯在超临界流体中的降解研究
Critical height of reinforced slope based on limit analysis upper bound method
基于极限分析上限法的加筋土坡临界高度
Research on Failure Criterias and Critical Slip Surfaces of Rockmass Slope;
岩质边坡失稳判据及临界滑动面确定方法研究
Search the Critical Slip Surface of Slope Based on Premium-Penalty Ant Colony Optimization
基于奖惩蚁群算法的边坡临界滑动面搜索研究
Cusp Catastrophe Model for Slope Critical Failure
以尖点突变模型为边坡临界失稳的判据研究