煤田地质与勘探Issue(6)：65-69,5.DOI:10.3969/j.issn.1001-1986.2015.06.013
盐渍土现场溶陷的双线法试验
Experiment of double-line method for the collapsibility of saline soil
摘要
Abstract
Based on the characteristic of collapsibility for saline soil, field tests were carried out in Chaerhan salt lake. In the tests, field double-line method was supplied, and its applicability was verified. According to the data, the law of field collapsibility was acquired, and the relevant technical basis was provided. The tests indicated that double-line method is suitable for the field experimental research on collapsibility. In its process, there exists a normal initial collapsibility pressure and a real one, in which the former (75 kPa) is the beginning of collapsibility, and the latter (110~115 kPa) is the critical point for the exchange of subsidence between natural and flooded foun-dation, while the subsidence of the foundation is divided into three stages by these two pressures. When the peak collapsibility pressure (175 kPa) reaches, the corresponding coefficient also reaches the maximum, namely the peak collapsibility coefficient (0.194). When the loading exceeds the peak pressure, collapsibility becomes slower, and the coefficients get smaller.关键词
盐渍土/溶陷/现场试验/双线法Key words
saline soil/collapsibility/field test/double-line method分类
建筑与水利引用本文复制引用
尹睿捷,张留俊,邢艳如..盐渍土现场溶陷的双线法试验[J].煤田地质与勘探,2015,(6):65-69,5.基金项目
青海省交通建设科技项目(KYHTF 2011-05) （KYHTF 2011-05）
