摘要
粘土作为土石坝防渗料具有悠久的历史,砾石粘土或掺砾粘土作为防渗体有相当的优势,因此快速发展并广泛推广应用。掺砾粘土作为心墙防渗体一般以室内击实试验成果作为参考,因此拟以两河口水电站为工程背景研究砾石土的相关击实特性及现场碾压控制,着重研究分析击实仪器尺寸影响、击实密度与击实功能规律、现场碾压与室内击实对应性、现场不同粒径砾石土压实控制标准。经过系统性试验,总结了这些因素影响的规律,并为以后的砾石土防渗体填筑控制提供参考。
Clay has a long history as impermeable material for earth-rock DAMS.Gravel clay or gravel-mixed clay have considerable advantages as impermeable material,therefore,it develops rapidly and is widely used.Gravel-mixed clay as core impervious body in damming is based on indoor compaction test,so we researched its compaction characteristics and field crushing control based on Lianghekou hydropower station construction,which are inflected by size of compaction instrument,compaction function,field compaction versus indoor compaction,field compaction control standard of gravel soil with different particle sizes.Through the systematic test,the influence rules of these factors are summarized,which will provide a reference for the future control of gravel soil filling.
作者
李朝政
Li Chaozheng(Kunming Engineering Corporation Limited of Power China,Kunming 650033,China)
出处
《山西建筑》
2018年第35期57-59,共3页
Shanxi Architecture
关键词
砾石粘土
击实特性
碾压控制
gravel clay
compaction characteristics
crushing control
