1) settlement velocity method
沉降速率法
1.
There are some shortcomings with present settlement velocity method to decide unloading time.
针对目前确定卸载时机的沉降速率法存在的缺点,推导得到沉降速率与工后沉降的关系式,论证成层地基也可采用沉降速率法,提出可以考虑超载、欠载、次固结等因素并适用于复合地基的确定沉降速率卸载标准的方法,试验结果和工程实践表明所推导的关系是正确的。
2) settlement rate
沉降速率
1.
Based on the experimental results,characteristics of strain changing,void ratio changing,settlement rate changing against time,and the relationship between stress and strain of MSW were studied.
通过室内蠕变-降解对比试验,研究了城市固体废弃物(MSW)的长期变形过程,详细地分析了MSW应变、沉降速率以及孔隙比随时间的变化规律。
2.
Meanwhile, effects of the retention time on the relative resistance, compressible coefficient and settlement rate have also studied.
通过恒压过滤实验研究了净水厂排泥水过滤的难易程度,研究了不同浓缩时间的排泥水对比阻、压缩系数及沉降速率的影响,结果表明净水厂的排泥水颗粒难于沉降,但属易于过滤的,过滤处理前可以不添加助滤剂,得到的滤饼属于高压缩性物料,且净水厂排泥水的比阻、沉降速率与排泥水的沉淀浓缩时间有密切关系,长时间的沉淀浓缩排泥水沉降速度明显降低,但比阻降幅较大,有助于后续机械脱水处理。
3.
To study the computation method for the settlement rate of saturated soft clay foundations,on the basis of the approximate relation of stress-strain consolidation degree of saturated soft clay,a formula for calculating the settlement rate of foundations is derived and the computation method for the settlement rate of saturated soft clay foundations are provided.
为了探讨饱和软粘土地基沉降速率的计算方法,根据饱和软粘土应变固结度与应力固结度的近似关系,推导出地基沉降速率的计算公式,提出了饱和软粘土地基沉降速率的计算方法,所得结果与工程实测数值相符。
3) subsidence rate
沉降速率
1.
One-dimensional tectonic subsidence histories of 30 presumed wells were calculated,8 wells of which were appraised for their tectonic and total subsidence rates.
按照地震测线的分布和凹陷特征,我们共选取了30口模拟井进行一维沉降史计算,并展示了具有代表性的8口井,分析他们在不同时期的构造沉降速率与总沉降速率。
2.
According to the well logging data of south Songliao basin,on the basis of formation denude,the authors evolved the research on deposition rate,subsidence rate and buried history.
盆地沉降史和埋藏史分析是油气评价的重要组成部分,根据松辽盆地南部测井资料,在地层剥蚀量计算的基础上,开展了沉积速率、沉降速率和埋藏史研究。
4) settling velocity
沉降速率
1.
Observations and analysis of floc size and floc settling velocity at coastal salt marsh in Luoyuan Bay in Fujian Province,China
罗源湾海岸盐沼悬沙粒度及沉降速率的观测和分析
2.
Takács function was adopted for describing the settling at low concentration and the zone settling, and a compression settling velocity function for the compression settling.
模型考虑了二沉池表面积的变化,低浓度污泥沉降和区域沉降采用了Takács速率公式,压缩沉降采用了压缩沉降速率公式。
3.
While the settling velocity of animal cells plays an important role in the design of the cell retention device and the estimation of settling operation, the measurement of this critical parameter suffers from the lack of simple and accurate method for a long time.
通过构建细胞沉降过程的理想化模型,提出了一种简易的细胞沉降速率测定方法。
5) settlement velocity
沉降速率
1.
Analysis and research of settlement velocity of soft soil foundation and its application;
软土地基沉降速率的分析研究及其应用
2.
The unrest surface s settlement is converted into rest settlement velocity by dealing with simple difference (d=1), namely the unrest time series ARIMA(p, d, q) model is transformed to rest ARMA(p, q) model.
对具有非平稳性的表面沉降进行一次差分(d=1)处理,使其转化为具有平稳性的沉降速率问题,即将非平稳性时间序列ARI MA(p, d, q)模型转化为平稳的ARMA(p, q)模型。
3.
The unrest surface settlement was converted to rest settlement velocity by dealing with simple difference(d=1),namely the unrest time series ARIMA(p,d,q) model was transformed to rest ARMA(p,q) model.
对具有非平稳性的表面沉降进行一次差分(d=1)处理,将其转化为平稳性的沉降速率问题,即将非平稳性时间序列ARIMA(p,d,q)模型转化为平稳的ARMA(p,q)模型。
6) rate of settlement
沉降速率
1.
In the optimization numeric model, the economic utility is adopted as object function, and the double controlling indicators which comprise the settlement after construction and the rate of settlement are employed as the constraint conditions.
通过对高速铁路软土路基工后沉降组成的分析,以经济效益为目标函数,软土地基工后沉降、沉降速率双控制指标为约束条件建立优化数值模型。
2.
Through analysising and studying these data, the occurring process of settlement and rate of settlement of the alluvial flat soft clay base under embankment have been found.
本文以伊洛河河滩相软土为研究对象，利用沉降板对路堤荷载作用下的软土地基沉降进行了长达两年多的观测，获得了大量的沉降数据，通过对这些数据的分析研究，推算出沉降系数m_s和固结参数β，并得到了河滩相软土地基固结沉降速率的变化规律。
补充资料：超速离心沉降法
分子式：
CAS号：
性质：利用离心力的作用将分散体系中的分散质点逐渐沉降，质点越大，沉降速度越大，基于沉降速度与分子量依赖性的原理，来测定高聚物分子量分布的方法。在高分子溶液中，高分子的质量很小，需要超速离心机，在很大的离心力场下才能观察到它们的沉降。离心机转速可达1000r/s以上，得到几十万倍于重力的离心力。超速离心沉降法测量分子量分布，是测定其沉降系数S，S的定义为粒子在单位离心加速度场中的沉降速率，表达式如下： 式中为粒子的沉降速率；r为界面在转轴中心的距离；w为转动角速度。此法适用于分子量1×104～2×107的范围，能获得各种平均分子量。由于S有浓度依赖性，最好选择θ溶剂，溶剂与溶质的折射率差及密度差要足够大。
CAS号：
性质：利用离心力的作用将分散体系中的分散质点逐渐沉降，质点越大，沉降速度越大，基于沉降速度与分子量依赖性的原理，来测定高聚物分子量分布的方法。在高分子溶液中，高分子的质量很小，需要超速离心机，在很大的离心力场下才能观察到它们的沉降。离心机转速可达1000r/s以上，得到几十万倍于重力的离心力。超速离心沉降法测量分子量分布，是测定其沉降系数S，S的定义为粒子在单位离心加速度场中的沉降速率，表达式如下： 式中为粒子的沉降速率；r为界面在转轴中心的距离；w为转动角速度。此法适用于分子量1×104～2×107的范围，能获得各种平均分子量。由于S有浓度依赖性，最好选择θ溶剂，溶剂与溶质的折射率差及密度差要足够大。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条