期刊论文

Zhou, Yi(yi-zhou@csu.edu.cn)

中文

中南大学学报(自然科学版)

1672-7207

2020

51

8

2061-2068

10.11817/j.issn.1672-7207.2020.08.002

国家自然科学基金资助项目（51978084）~~；

本校为其他机构

为了研究砾石土防渗料的压实特性,采用凸碾和冲碾2种方式对室内击实试验筛选的3种不同级配的砾石土(砾石土①、砾石土②和砾石土③)进行大型碾压试验.研究结果表明:3种级配砾石土防渗料压实度均满足压实度大于98％的要求;砾石土防渗料的渗透系数和压缩模量均随砾石粒度低于5 mm的质量分数增大而减小;当砾石粒度小于5 mm的质量分数分别为45％,50％和55％时,凸碾压实的渗透系数分别为8.58×10-6,6.61×10-6和4.45×10-6 cm/s,渗透系数最大减小幅度达48.2％;冲碾压实的渗透系数分别为7.72×10-6,5.60×10-6和3.30×10-6 cm/s,渗透系数最大减小幅度达57.2％;凸碾压实的压缩模量分别为81.84,77.35和6...

To study the compaction characteristics of the anti-seepage material of gravelly soil, large-scale compaction tests were designed for three kinds of gravelly soils, i. e. gravelly soils ①, ② and ③, by using convex rolling and impact rolling to test the compaction characteristics of three different graded gravel soils that screened from the laboratory compaction tests. The results show that the compaction of three graded gravelly soils meets the requirement that the compaction is greater than 98%. The permeability coefficient and compression ...