钻孔埋管注盐法整治季节冻土区路基冻害现场试验研究

doi:10.7522/j.issn.1000-0240.2017.0322

冰川冻土 ›› 2017, Vol. 39 ›› Issue (6): 1265-1272.doi: 10.7522/j.issn.1000-0240.2017.0322

钻孔埋管注盐法整治季节冻土区路基冻害现场试验研究

王彦虎¹, 王旭¹, 杨楠², 王跃武², 张延杰¹

1. 兰州交通大学土木工程学院, 甘肃兰州 730070;
2. 青藏铁路公司西宁工务段, 青海西宁 810006

收稿日期:2017-04-24 修回日期:2017-09-20 出版日期:2017-12-25 发布日期:2018-04-03
作者简介:王彦虎(1993-)男,甘肃定西人,2015年在北京建筑大学获学士学位,现为兰州交通大学在读硕士研究生,从事铁路路基相关研究.E-mail:1730338712@qq.com.
基金资助:
青藏铁路公司科技研究开发计划课题（QZ2015-G01）；冻土工程国家重点实验室开放基金（SKLFSE201607）资助

Field test study on railway subgrade against frost damage in seasonally frozen ground areas by using salt injection method

WANG Yanhu¹, WANG Xu¹, YANG Nan², WANG Yuewu², ZHANG Yanjie¹

1. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
2. Xining Railway Section of Qinghai-Tibet Railway Company, Xining 810006, China

Received:2017-04-24 Revised:2017-09-20 Online:2017-12-25 Published:2018-04-03

摘要/Abstract

摘要： 以季节冻土区青藏铁路环青海湖段路基冻害为背景，通过选取典型冻害断面，从水分、温度和土性三个方面分析了环湖段路基冻害成因。根据路基病害处理中成熟应用的注浆和注盐法，提出采用钻孔埋管注盐法整治路基病害技术，通过现场冻胀观测，检验注盐法整治路基的有效性。结果表明：环湖段路基冻害主要是由于路基土体内存在一层低液限低渗透性的粉质黏土，黏粒含量高，含水率大，冻深最大为1.5 m，粉质黏土层冻结，引起路基冻胀。结合现场试验段，对用盐量、盐的成分、施工工艺与参数提出合理的施工建议。现场冻胀监测表明，钻孔埋管注盐段路基的冻胀量明显降低，可用于季节冻土区路基冻害的整治治理。

关键词: 铁路路基, 冻害, 注盐法, 现场试验

Abstract: Based on the frost damage of Qinghai Lake section of the Qinghai-Tibet Railway, in this paper, the causes of frost damage of the subgrade are analyzed from three aspects, namely, water, temperature and soil by selecting a typical frost damage section in the seasonally frozen ground areas. According to the grouting and salt injection method, which has been applied maturely to treat subgrade disease, a new method has been put forward to treat the subgrade disease by drilling and injecting salt. Furthermore, the effectiveness of this method can be monitored by observing frost heave in-situ. The results show that the damage to the subgrade in the lake section is mainly due to a layer of silty clay, characterized with low-liquid limit and low-permeability, in the subgrade, of which the clay content and water content are high, resulting in the maximum frozen depth reaching 1.5 m; the silty clay freezing causes frost heaving to the subgrade. Based on the in-situ test, reasonable construction suggestion is put forward, including the amount of salt and its composition, construction technology and parameters. In-situ frost heave monitoring shows that the amount of frost heave in the road section which has been drilled and injected salt is significantly reduced. Thus, the method can be used to deal with the frost damage of subgrade in the seasonally frozen ground areas.

Key words: railway subgrade, frost damage, salt injection method, in-situ test

中图分类号:

TU448

王彦虎, 王旭, 杨楠, 王跃武, 张延杰. 钻孔埋管注盐法整治季节冻土区路基冻害现场试验研究[J]. 冰川冻土, 2017, 39(6): 1265-1272.

WANG Yanhu, WANG Xu, YANG Nan, WANG Yuewu, ZHANG Yanjie. Field test study on railway subgrade against frost damage in seasonally frozen ground areas by using salt injection method[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2017, 39(6): 1265-1272.

参考文献

[1] Xu Xuezu, He Ping, Zhang Jianming. Progresses in the studies of soil freezing and frost heaving[J]. Journal of Glaciology and Geocryology, 1997, 19(3):280-283.[徐敩祖, 何平, 张健明. 土体冻结和冻胀研究的新进展[J]. 冰川冻土, 1997, 19(3):280-283.]
[2] Simonsen E, Janoo V C, Isacsson U. Resilient properties of unbound road materials during seasonal frost conditions[J]. Journal of Cold Regions Engineering, 2002, 16(1):28-50.
[3] Chen Jianbing, Zhang Jinzhao. Developments in international studies on permafrost:a review on the 8th International Symposium on Permafrost Engineering[J]. Highway, 2004(1):94-98.[陈建兵, 章金钊. 国际冻土研究动态——第八届国际冻土大会综述[J]. 公路, 2004(1):94-98.]
[4] Lü Fei. Study on insulation measures of high-speed railway subgrade in seasonally frozen soil region[J]. Journal of Glaciology and Geocryology, 2016, 38(1):115-120.[吕菲. 季节冻土区高速铁路路基保温措施效果研究[J]. 冰川冻土, 2016, 38(1):115-120.]
[5] Li Xiangqun. Analysis the reason of the highway harmful freeze and deal with the method researchers of Jilin Province[D]. Changchun:Jilin University, 2006.[李向群. 吉林省公路冻害原因分析及处理方法研究[D]. 长春:吉林大学, 2006.]
[6] Gu Xianming. Study on mechanism and prevention of frost heaving and frost boiling in seasonally frozen road[D]. Changchun:Jilin University, 2007.[谷宪明. 季冻区道路冻胀翻浆机理及防治研究[D]. 长春:吉林大学, 2007.]
[7] Wang Yunxia. Application of the method of drilling and burying pipe to prevent the disease of roadbed[J]. Railway Quality Control, 2012, 40(8):35-36.[王云霞. 采用钻孔埋管注盐法预防路基冻害[J]. 铁道技术监督, 2012, 40(8):35-35.]
[8] Ni Tieshan, Ding Chao. Experimental study on the treatment of roadbed frost damage by salt injection[J]. Science and Technology Innovation and Application, 2012(23):218-219.[倪铁山, 丁超. 注盐法整治铁路路基冻害的试验性研究[J]. 科技创新与应用, 2012(23):218-219.]
[9] Ling Yongchun. Analysis on genesis of frost damage to Lanzhou-Xinjiang railway subgrade in seasonal permafrost region[J]. Subgrade Engineering, 2013(3):204-208.[令永春. 兰新铁路季节性冻土区路基冻害成因分析[J]. 路基工程, 2013(3):204-208.]
[10] Ministry of Railways of the People's Republic of China. Code for soil test of railway engineering (TB-2004)[S]. Beijing:China Railway Publishing House, 2004.[中华人民共和国铁道部. 铁路工程土工试验规程(TB-2004)[S]. 北京:中国铁道出版社, 2004.]
[11] Chen Xiaobo, Liu Jiankun, Liu Hongxu, et al. Soil freezing and foundation[M]. Beijing:Science Press, 2006.[陈肖柏, 刘建坤, 刘鸿绪, 等. 土的冻结作用与地基[M]. 北京:科学出版社, 2006.]
[12] Zhao Yunlong. Railway subgrade frost damage and prevention[M]. Beijing:China Railway Press, 1984.[赵云龙. 铁路路基冻害及防治[M]. 北京:中国铁道出版社, 1984.]
[13] Wang Yongtao, Wang Dayan, Guo Yan, et al. Experimental study of the development characteristic of frost heaving ratio of of the saturated Tibetan silt under one-dimensional freezing[J]. Journal of Glaciology and Geocryology, 2016, 38(2):409-415.[王永涛, 王大雁, 郭妍, 等. 青藏粉土单向冻结冻胀率变化特性研究[J]. 冰川冻土, 2016, 38(2):409-415.]
[14] Zhang Xiyin, Zhang Mingyi, Lu Jianguo, et al. Study of the freezing and thawing features of soil:current situation and outlook[J]. Journal of Glaciology and Geocryology, 2016, 38(6):1644-1657.[张熙胤, 张明义, 路建国, 等. 土体冻融特征研究现状与展望[J]. 冰川冻土, 2016, 38(6):1644-1657.]
[15] China Academy of Building Research. Technical specification for building foundation treatment (JGJ-2002)[S]. Beijing:China Architecture & Building Press, 2002.[中国建筑科学研究院. 建筑地基处理技术规范(JGJ-2002)[S]. 北京:中国建筑工业出版社, 2002.]

钻孔埋管注盐法整治季节冻土区路基冻害现场试验研究

Field test study on railway subgrade against frost damage in seasonally frozen ground areas by using salt injection method

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