摘要
为克服岩土工程勘察中饱和粉土的取样和送样过程中产生的震动及水分损失对其原始含水量及孔隙比的影响,通过建立土体介电常数与孔隙比及含水量的关系,采用TDR测试方法,实现对不同深度饱和粉土的含水量及孔隙比的原位测试。经与室内土工试验结果相比较,表明TDR方法测试结果可靠,且测试速度快、对土层扰动小,是一种值得推广的原位测试手段。
In geotechnical investigation,the original water content and void ratio of saturated silt are influenced by vibration and water loss during the process of sampling and transportation.The relationship between soil dielectric constant and its water content and void ratio has been established.In situ water content and void ratio measurements of saturated silt in different depth are implemented by TDR technique.Compared with laboratory soil test,the test results of TDR are accurate and reliable.These results indicate that TDR is a fast,little destructive and viable instrument to measure the in situ water content and void ratio of saturated silt.
出处
《工程勘察》
CSCD
北大核心
2011年第1期29-33,45,共6页
Geotechnical Investigation & Surveying
关键词
TDR
含水量
孔隙比
原位测试
Time Domain Reflectometry（TDR）
water content
void ratio
in situ test
