粉沙

粉沙地基水泥灌浆处理及效果检测

The Treatment of Silt Foundation by Cement Grouting and Examination of its Effectiveness

研究结果表明，乐清湾现代沉积主要以细颗粒沉降为主，粉沙和粘土总含量占90%以上；

Results show that the recent sediments are mainly fine-grained composing 90 % of silt and clay .

土壤颗粒以粉沙为主，粉沙粒占总量的60%左右，粘粒约占15%左右，容重约为1.2gcm~（-1），试验前将土样风干并过1×1cm的粗筛。

The bulk density was 1.2 g cm-1 . The soil contents about 60 % of silts and about 15 % of clays .

结果表明：近地表0.1m处收集到的沙尘物质主要来自于近地表跃移的沙粒，随着高度的增加，降尘中细沙成分越来越少，粉沙成分越来越大。

The results are as follows : the falling sand-dust of 0.1 m height near surface is mainly from saltation matter , the fine sand compositions of falling dust are fewer and the powder sand elements are more .

平原粉沙淤泥质海岸防护林土壤渗透特性的研究

Study on Soil Permeability of Shelter-Forest in Silting Coastal Plain

破碎波作用下粉沙悬移质浓度垂向分布的实验研究

Experimental study on fine sediment concentration under breaking waves

压缩沉降主要出现在粘土或粉沙中。

Consolidation settlement occurs mainly in clays or silts .

其它季节中风沙流含沙量主要以粗粉沙和中粉沙为主。

In other seasons , wind-sand flow is mainly thick powder sand and middle powder sand .

夏季颗粒组成最大值随着高度依次为中沙、粗粉沙。

In summer the maximum value ofparticles composed with height were followed by middle sand , thick powder sand .

不同质地之土壤，以粉沙壤土或沙壤土适宜于其发生和分布。

The favourable soil texture for the occurrence and distribution of larvae was fine sandy loam or sand soil .

河道沉积由砂，粉沙和粘土组成，充填于河流切割的河谷之中。

Channel deposits , consisting of sand , silt and clay , fill the valleys cut by a river system .

而碳酸钙、粗粉沙和沙级颗粒却在土壤层中含量低，黄土层中含量高。

But the content of calcium carbonate , coarse fraction and sand-size particles in soil are lower than those in loess .

休息室您的跳水池，然后步行到粉沙海滩-被认为是岛上最好的之一。

Lounge by your plunge pool , then stroll to the powder-sand beach – considered one of the island 's best .

水力冲填坝通常是用一根管子利用水流把砂和粉沙运到坝体处筑坝。

Hydraulic fill dams are built of sand and silt brought into the dam in a stream of water , usually through a pipe .

粉沙的运动特点是遇到动力容易散乱、悬浮，动力减弱时易沉降，密实较快。

The movement of powder sand is characterized as easily scattered and suspended when encountered power . Easy settlement occurs when power is weak .

相关性分析表明：灌丛的冠幅越大，越有利于细沙、极细沙和粉沙的截留；

The relativity analysis shows that the bigger the shrub cluster is , the more advantageous for them to hold fine sand , mighty fine sand and powder sand ;

黄河三角洲由于其入海区水深较浅，形成了一个长嘴，两片烂泥的结构，导致本应以较致密粉沙构成的水下三角洲平原却有大片的软土存在。

The structure of one mouth and two pieces of mud was formed in Huanghe delta due to the shallow water in this area , which caused the existance of plenty of soft soil in the subaqueous delta plain .

在粒度组成上，古土壤的粘粒和细粉沙含量较多，粗粉沙、细沙、沙三者含量较小，中值粒级和平均粒级较小；磁化率、烧失量和吸湿水含量均较高。

In CDC profile , paleosol contains more clay and fine silt , less coarse silt and sand . Median grain of level and average level is lower . Magnetic susceptibility , loss-on-ignition and hydroscopic water content is higher .

针对粉沙运动的特性，采用试挖槽观测、模型试验、示踪沙试验等方法进行了研究，并对航道开挖后的泥沙回淤进行了预测。

In the light of the characteristics of silt motion , methods such as observation through trial tunnel , model experiment , and sand tracing test , etc. were studied and back silting in the channel after excavation was forecasted .

研究腾格里沙漠北缘沙丘粒度特征得出：（1）腾格里沙漠北缘沙丘沉积物不含砾石、极粗砂和粉沙。

Through researching grain size characteristics of north part of the Tengger Desert , we get the results : ( 1 ) dunes sediment of north margin of the Tengger Desert donot include gravel , very coarse sand and silt .

本文基于粘弹性基础梁算法，利用粉沙地基上船闸施工过程中各观测点的实测沉陷值，采用直接反分析法来反演地基的粘弹性参数；

In the paper , based on viscoelastic foundation beam algorithm , making use of the measured settlement values of all monitoring points during the construction process of lock on soft foundation , viscoelastic parameters of foundation are inverted with direct inverse analysis method .

植被恢复过程中，土壤中粉沙及粘粒所占比例增大，容重平均值降低，土壤的通气性改善，植物能利用的有效水分含量增加，地表土壤抗风蚀能力增强。

In the process of re-vegetation , the rate of the silt and cosmid is increased , the average volume density is declined , the air amount is increased , the available moisture for plant is increased , the ability for preventing erosion is enhanced .