铁道科学与工程学报2018，Vol.15Issue(6)：1437-1444,8.
粗颗粒盐渍土室内溶陷装置设计及试验研究
Design and experimental study on the indoor collapsibility device of coarse grained salty soil
摘要
Abstract
The test of collapsibility coefficient of coarse grained saline soil is limited to the field immersion test. However, the conventional method for measuring the coefficient of collapsibility can not meet the test requirements. Based on this problem, this paper introduced a test method of the residual coefficient of indoor coarse-grained saline soil, which overcomes the shortcomings of the existing method, such as the volume ratio of particles and the influence of boundary conditions. By comparing with the field test data, the factors influencing the sedimentation characteristics of coarse-grained saline soil were analyzed and discussed. The results show that the indoor test device and the test method can test the dissolution coefficient of coarse-grained saline soil more accurately, which can provide effective basis for practical engineering construction. For coarse-grained saline soil, the improvement of the content of soluble salt will enhance its trapability to a certain extent. The cohesion of the dissolved salt will improve the integrity and strength of the coarse-grained saline soil, but under the condition of water immersion, the dissolution capacity of the coarse-grained saline soil is obviously higher than that of the salt-The larger the skeleton particles that make up the coarse granular saline soil, the weaker the solubility of the saline soil. The compaction degree of the remodeling soil will affect the accuracy of the indoor dissolution coefficient test to a certain extent.关键词
粗颗粒盐渍土/溶陷系数/测试/中溶盐Key words
coarse grained saline soil/coefficients of dissolve settlement/determination/medium soluble salt分类
交通工程引用本文复制引用
孙安元,吴亚平,蒲增钢,陈坤,张晓波..粗颗粒盐渍土室内溶陷装置设计及试验研究[J].铁道科学与工程学报,2018,15(6):1437-1444,8.基金项目
国家自然科学基金重点资助项目(51236003) （51236003）
国家科技支撑计划课题资助项目(2014BAG05B05) （2014BAG05B05）
中国铁路总公司科技研究开发计划课题资助项目(2015G005-C) （2015G005-C）
