摘要
黏土心墙砂砾(卵)石坝或面板堆石坝的砂卵石等填筑过程中现场检测结果经常出现相对密度大于1的不合理现象,施工控制中测定砂砾(卵)石的相对密度,成为控制施工质量、保证工程建设顺利进行的关键。通过分析现场砂砾(卵)石料试验结果,发现砂砾(卵)石料中大于5 mm粒径的粗粒含量与其最大、最小干密度存在曲线关系,利用试验结果绘制砂砾(卵)石中粒径大于5 mm的粗粒含量与干密度关系曲线,根据检测样品中粒径大于5 mm的粗粒含量,通过关系曲线确定样品的干密度,计算检测样品压实后的相对密度。研究表明,这一方法可以很好地解决填筑过程中现场填料检测得到的相对密度大于1的不合理现象。
In the process of filling the clay core wall gravel(pebble)stone dam or concrete rockfill dam,the on-site test results often show an unreasonable phenomenon with a relative density greater than 1 and the relative density of the gravel(pebble)stone is determined during construction control,becoming the key of quality control and ensuring smooth construction of the project.By analyzing the results of the gravel(pebble)stone in the field,it was found that there was a certain curve relationship between the coarse grain content of the gravel(pebble)stone and the maximum and minimum dry density,and the test results were used to draw the coarse grain content of the gravel(pebble)stone larger than 5 mm.According to the dry density relationship curve and the content of the coarse particles in the detected sample of more than 5 mm,the dry density value of the sample was determined by a relationship curve and the relative density of the test sample after compaction was calculated.The study shows that this method can well solve the irrational phenomenon of the relative density greater than 1.
作者
唐建立
来亦姝
皇甫泽华
历从实
祁安领
TANG Jianli;LAI Yishu;HUANGFU Zehua;LI Congshi;QI Anling(Henan Water Conservancy Survey Co.,Ltd.,Zhengzhou 450008,China;Henan University,Kaifeng 475000,China;Henan Qianping Reservoir Construction Authority,Zhengzhou 450003,China)
出处
《人民黄河》
CAS
北大核心
2019年第6期135-137,共3页
Yellow River
关键词
粗颗粒填料
干密度
相对密度
土石坝
级配曲线
coarse particle packing
dry density
relative density
earth-rock fill dam
gradation curve