The Impact of Unfrozen Water Content on Ultrasonic Wave Velocity in Frozen Soils

被引：26

作者：

Li Dongqing ^{[1
]}

Huang Xing ^{[2
]}

Ming Feng ^{[1
]}

Zhang Yu ^{[1
]}

机构：

[1] Chinese Acad Sci, Environm & Engn Res Inst, State Key Lab Frozen Soil Engn Cold & Arid Reg, Lanzhou 730000, Gansu, Peoples R China

[2] Sichuan Agr Univ, Coll Architecture & Urban Rural Planning, Du Jiangyan 611830, Sichuan, Peoples R China

来源：

ADVANCES IN TRANSPORTATION GEOTECHNICS III | 2016年 / 143卷

关键词：

frozen soil; P-wave velocity; temperature; unfrozen water content;

D O I：

10.1016/j.proeng.2016.06.114

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

According to the mixture theory and the principle of effective stress, acoustic wave equation of three-phased frozen soil was established. Through academic discussion and exponential analysis, it is obtained that the wave velocity is influenced by the soil types, ice content and water content, and decreases with an increase of water content. In order to validate the correctness of theoretical model tested the ultrasonic P-wave velocity of silty clay, silt and sand under the condition of different initial water contents and negative temperatures. Result shows that, the change of temperature causes the unfrozen water content changed and consequently causes the variation of P-wave velocity. P-wave velocity decreases with an increase of unfrozen water content and there is a good linear relation between them.

引用

页码：1210 / 1217

页数：8

共 12 条

[1]

[Anonymous], 2010, PHYS FROZEN SOILS

[2] THEORY OF PROPAGATION OF ELASTIC WAVES IN A FLUID-SATURATED POROUS SOLID .1. LOW-FREQUENCY RANGE [J].