西南地区覆盖层深部黏土物理力学试验参数研究  

Study on Physical and Mechanical Test Parameters of the Deep Covering Clay in Southwest China

作　　者：罗欣 孙睿达 王晓龙 LUO Xin;SUN Ruida;WANG Xiaolong(PowerChina Chengdu Engineering Co., LTD, Chengdu, Sichuan, 610072;Sichuan University, Chengdu, Sichuan, 610064)

机构地区：[1]中国电建集团成都勘测设计研究院有限公司,四川成都610072 [2]四川大学,四川成都610064

出　　处：《四川水力发电》2021年第4期137-140,共4页Sichuan Hydropower

摘　　要：在水电工程建设实践中,专门针对覆盖层黏土特别是覆盖层深部黏土布置的勘探及试验工作量有限,覆盖层黏土物理力学参数系统性的研究通常受制于基础试验资料。依托长河坝、ML等大型水电工程,搜集、整理了西南地区大量的覆盖层勘探试验资料,统计分析了覆盖层深部黏土的物理性质以及相关指标间的关联,印证了土的可塑性经典规律。同时,分析了覆盖层深部黏土在常规压缩、渗透、强度等方面的特性表现,可为后续工程地质评价或基础处理提供一定参考。In the practice of hydropower project construction,the exploration and tests for covering clay,particularly for the deep covering clay is limited,and the systematic study of physical and mechanical parameters of covering clay is usually subject to the basic test data.Based on such large hydropower projects as Changheba HPP and ML HPP,this paper gathers and sorts a large number of overburden exploration and test data in Southwest China.Statistical analyses of the physical properties of the deep covering clay and the correlation between relevant indexes,verifies the classic law of soil plasticity.The characteristics of the deep covering clay in terms of conventional compression,permeability and strength are analyzed,which can provide reference for engineering geological evaluation or foundation treatment.

关 键 词：覆盖层深部黏土 物理力学参数 可塑性 

分 类 号：O369[理学—流体力学] O212.6[理学—力学]