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盐胶结层的特性研究
引用本文:赵文.盐胶结层的特性研究[J].路基工程,2012,0(3):43-45.
作者姓名:赵文
作者单位:中铁第一勘察设计院集团有限公司,西安 710043
摘    要:近几年在兰新铁路的第二双线、库格线、哈罗线等新疆多条铁路线路的勘察中,发现在第四系土层中存在一种特殊的胶结类型——盐胶结。通过盐胶结类型的成因、力学特性和机理的分析研究,结果表明盐胶结的成因与盐渍土不同,其强度受含水量的影响较大,由于盐胶结层的存在,导致了岩土施工工程分级由Ⅲ级硬土提高为Ⅳ级软石,施工措施应相应变化。

关 键 词:盐胶结    胶结类型    土体强度    岩土施工工程分级
收稿时间:2019-11-09

Research on Characteristics of Salt Cemented Formation
Authors:ZHAO Wen
Institution:ZHAO Wen ( China Railway First Survey and Design Institute Group Co. , Ltd. , Xi'an 710043, China)
Abstract:During the surveys for the Second-Double-Line of Lanzhou-Xinjiang Railway, Gomud-Korla Railway, Hami-Lop Nor Railway and other railways in recent years, a special type of cementation, salt cementation, is found in the quaternary formation. Through the analytical research on its genesis, mechanical characteristics and mechanism, it is demonstrated that the genesis of salt cementation is different from that of saline soil and its strength will be affected by moisture content to a greater extent. Due to the existence of salt cemented formation, excavation classification is increased from Grade III hard-soil to Grade 1V soft-rock and the construction measures are changed accordingly.
Keywords:salt cementation  type of cementation  soil strength  excavation classification of rock and soil
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