Grounded slag and fly ash mixing to match C60 concrete with broken pebble;
矿渣微粉与粉煤灰双掺配制C60碎卵石混用混凝土
Study on laws of incipient motion for pebbles with a wide size distribution;
宽级配卵石起动规律研究
A way to determine Es value of cobble and pebble by dynamic test thump number N_63.5);
用动测锤击数N_(63.5)确定圆砾、卵石Es值的方法
The survey data of gravel bed load in Cuntan station from 1996 to 2001 and Zhutuo station from 1975 to 2001were analyzed.
通过对朱沱站1975～2001年、寸滩站1966～2001年实测卵石推移质资料分析,结果表明,朱沱站从1991起、寸滩站从1981年起,卵石推移量系统减少,粒径细化,起动流速增加,水沙关系明显变化。
Based on a quantity of the field measured data of gravel, the trimming andanalysis were carried out and directed against the Chuanjiang and its distributaries of theUpper Yantze River as well as the Three Gorges Reach.
在收集大量卵石野外实测资料的基础上，主要针对长江上游的川江及其支流和三峡河段进行整理与分析，得到了卵石河床的床面组成、卵石推移质级配、卵石形态特征及其输沙率的变化规律。
The research results can provide reference for the study of the law of threshold motion and transportation of gravel.
本文对非均匀卵石的河床组成、颗粒暴露度的分布特性进行了分析研究,在此基础上确定了计算床面,可为非均匀卵石起动及输移规律的研究提供参考。
Application of cobble in Qinghai-Tibet railway;
卵石在青藏铁路施工中的应用
The formulae for calculating the strength of high-pumping concrete on cobble is obtained by optimal mixture radio.
从改善卵石界面过渡层的特性,增强卵石界面和水泥浆的黏结力出发,对混凝土外加剂和掺合料进行了选择和试验;经混凝土配合比优化,得到卵石高强泵送混凝土强度的计算公式。
The technical route and the successful practice by using cobble as coarse aggregate,and adopting multi-mix-method as method were introduced and analyzed.
介绍和分析了用卵石为粗骨料,利用多掺法配制C50泵送混凝土的技术路线和成功实践。
The construction of pebble bed downdraft gasifier is proposed.
介绍了卵石床固体燃料高温空气气化炉的结构,并从气化过程的影响因素出发阐述了产品燃气热值较高、燃料利用范围较广、燃气品质较好、碳转化率较高、结构紧凑、经济性好等特点。
Based on site tests,this paper discusses the effect of pressure grouting under pile s tip in cobble layer and analyzed its economical and social benefit.
本文根据某工程中钻孔灌注桩的现场试验,对桩端压力灌浆技术在卵石层中灌注桩的应用效果及其经济效益进行了分析。
New technology of pressure grouting under pile tip at cobble layer can largely improve pile bearing capacity and reduce its settlement.
大量工程实践表明其对不同地层的适应性是不同的,某工程中钻孔灌注桩现场试验结果显示:桩端压力灌浆工艺在卵石层中灌注桩运用效果良好,经济、社会效益显著。