不同压力条件下艾丁湖地区天然盐渍土盐-冻胀研究  

Study on the Lake Aydingkol Area Under Different Pressure Conditions of Natural Saline Soil and Frost

作　　者：张运海[1] 张远芳[1] 刘凯[1] 潘蕾[1] 陈敬知 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052

出　　处：《科学技术与工程》2017年第21期299-302,共4页Science Technology and Engineering

基　　金：国家自然科学基金(41262012);新疆水文学及水资源重点学科基金(xjswszyzdxk20101202)资助

摘　　要：为研究艾丁湖地区天然盐渍土在不同压力和含水率下的盐-冻胀规律,选取艾丁湖地区低液限粉土为研究对象,运用室内小尺寸实验装置进行试验。结果表明:在不同压力下,盐-冻胀规律基本相似;压力对盐渍土的盐-冻胀影响很大,随着上覆压力的逐渐增大,盐-冻胀量逐渐减小。盐-冻胀率在一定范围内随含水率的增大而增大,当含水率为最优含水率时,盐-冻胀率达到最大值。For the study of natural saline soils Aydingkol lake areas in different pressure and water content under salt and frost law, selection of lake Aydingkol region and low liquid limit silt as the research object, experiments were carried out by applying different pressure to a small size experimental device. The results show that under the condition of different pressure, salt-basic similarity law of frost heave. Pressure of saline soil salt- frost heave phenomenon, with the increasing of overburden pressure, salt-frost Heave decreases. Salt heaving rate in a certain range with water content increases when water content is the most moisture, salt and frost rate reached the maximum value.

关 键 词：艾丁湖地区 天然盐渍土 不同压力条件 盐-冻胀 

分 类 号：TU448[建筑科学—岩土工程]