摘要
为研究干密度、含水率及含泥量等因素对塔克拉玛干沙漠边缘含黏风积沙剪切强度特性的影响,对不同干密度、不同含水率及不同含泥量的风积沙试样开展了大量的直接剪切试验,以此得到风积沙的抗剪强度、粘聚力c和内摩擦角φ的变化规律,并采用数理统计方法系统地分析了各因素对风积沙抗剪强度特性的影响。研究表明:干密度、含水率及含泥量对风积沙的抗剪强度特性具有显著的影响,含水率和干密度之间存在交互作用,且在干密度为1.56g/cm3的情况下,存在一个最佳含水率使风积沙剪切强度最大为80kPa。
In order to study the effects of dry density, water content and mud content on the shear strength characteristics of aeolian sand,A large number of direct shear tests were carried out on aeolian sand samples with different dry densities, different water contents and different mud contents.In this way, the shear strength of aeolian sand and the variation of its strength index Cohesion c and internal friction angle φunder different conditions are obtained.The effects of various factors on the shear strength characteristics of aeolian sand were systematically analyzed by mathematical statistics.research shows: dry density, moisture content and mud content have a significant effect on the shear strength characteristics of aeolian sand,There is an interaction between moisture content and dry density;And When the dry density is 1.56 g/cm 3 ,There is an optimum moisture content that allows the aeolian sand to have a shear strength up to 80 kPa.
作者
张龙菊
黎亮
孙艳玲
王新刚
Zhang Longju;Li Liang;Sun Yanling;Wang Xingang(College of Water Resources and Architecture Engineering ,Tarim University ,Alar, Xinjiang 843300;College of Achitecture Engineering , Zhejiang University , Hangzhou, Zhejiang 310058)
出处
《塔里木大学学报》
2019年第3期57-62,共6页
Journal of Tarim University
基金
塔里木大学校长基金青年项目“塔克拉玛干风积沙力学特性试验研究”(TDZKQN201705)
关键词
风积沙
剪切特性
干密度
含水率
含泥量
aeolian sand
shear characteristics
dry density
water content
Mud content.
