包西铁路榆林地区风积沙填料物理改良研究  

Research into Physical Improvement of Aeolian Sand as Filling Material in Yulin Section of Baotou-Xi'an Railway

作　　者：胡三喜[1] 

机构地区：[1]中铁第一勘察设计院集团有限公司地质路基处,西安710043

出　　处：《铁道标准设计》2012年第7期18-22,共5页Railway Standard Design

摘　　要：包西铁路榆林段线路主要以路基通过风积沙地区,为了充分利用挖弃的风积沙、减少取土量,避免在风沙地区长远距离取土,以减少对沙漠环境的破坏以及降低工程投资,针对风积沙填料难以满足路基填料压实标准的特点,结合当地粉土的特性,采用在风积沙中掺入不同配比的粉土进行改良的方案进行技术研究,通过室内试验、现场施工数据比较分析,解决了风积沙作为路基填料的技术难题.The subgrade of Yulin Section in Baotou-Xi'an Railway passes through the aeolian sand area.The purpose of this research is to take full advantage of the dug-out aeolian sand so as to reduce the amount of soil borrowing,avoid long-distance soil borrowing in the wind-blown sand area,lessen the damage on the desert environment and cut down the project investment.The article,aiming at the characteristics that aeolian sand as filling material alone is hard to meet the requirements of the compaction standard of subgrade filling-materials,combining with the characteristics of the local floury silt,carries out the technical research into the improvement schemes in which the aeolian sand is mixed with different proportions of floury silt respectively.Finally,By means of comparative analysis between the laboratory experiment data and the field construction data,the technical problem is solved when aeolian sand is used as the subgrade filling-material.

关 键 词：铁路路基 风积沙 填料 物理改良 

分 类 号：U21[交通运输工程—道路与铁道工程]