Open AccessStudy on creep characteristics of residual soil in Central Yunnan Water Diversion Project
Author(s) -
Chongyang Li,
Qingwen Zhang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/783/1/012021
Subject(s) - creep , schist , geotechnical engineering , sericite , consolidation (business) , residual , geology , suction , materials science , geochemistry , composite material , engineering , metamorphic rock , mechanical engineering , paleontology , quartz , business , accounting , algorithm , computer science
Sericite schist is an extremely soft rock. Most of the sericite schist residual soil in nature is in an unsaturated state, The matrix suction of the residual soil has a great influence on its strength. In this paper, an unsaturated quadruple consolidation tester and an unsaturated triaxial creep tester are used to carry out one-dimensional and three-axis creep tests on sericite schist residual soil. The test results show that the creep characteristics of the soil sample are obvious. Both the one-dimensional and triaxial tests show obvious three-stage characteristics. At the same time, the influence of the matrix suction and the net vertical stress on the creep characteristics of the soil is comparatively analyzed.