南疆铁路路基次生盐渍化试验研究

赵德安; 余云燕; 马惠民; 陈志敏; 金培杰; 彭典华

doi:10.11779/CJGE201404020

南疆铁路路基次生盐渍化试验研究 English Version

1. 西北民族大学土木工程学院,甘肃兰州 730030; 2. 兰州交通大学土木工程学院,甘肃兰州 730070; 3. 中铁西北科学研究院,甘肃兰州 730000

基金项目: 铁道部科技开发计划项目（200G03）

详细信息

作者简介:
赵德安 (1959-),男,博士,教授、博士生导师,主要从事岩土与地下工程的试验、数值分析及岩土锚固技术研究。E-mail: zhao_da@mail.lzjtu.cn。

中图分类号: TU411.99
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出版历程
- 收稿日期: 2012-11-30
- 发布日期: 2014-04-21

Secondary salinization of subgrade of southern Xinjiang Railway

1. School of Civil Engineering, Northwest University for Nationalities, Lanzhou 730030, China; 2. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; 3. Northwest Research Institute of China Railway, Lanzhou 730000, China

摘要

摘要: 为了全面地研究重塑盐渍土和改良盐渍土的毛细水上升及次生盐渍化现象,弄清水分盐分迁移规律,结合南疆铁路盐渍土路基病害防治技术研究,自行研发了一套测定土的毛细水上升高度和盐分迁移试验系统。试验结果表明：改良盐渍土试验未见明显泛盐现象,而重塑盐渍土在同样压实度及相同物理环境下,迁移盐分表面析出十分明显,沿土柱高度（模拟土层深度）呈梯度规律变化。K938 Ⅲ-3型改良盐渍土的毛细水上升高度和次生盐渍化平行试验进一步表明,盐渍土经水泥、石灰和粉煤灰等掺入物改良后能有效地抑制次生盐渍化现象的发生,有效地降低毛细水上升高度。
- 盐渍土 /
- 改良盐渍土 /
- 次生盐渍化 /
- 试验装置
Abstract: The defects of saline soil subgrade are obvious along the southern Xinjiang Railway. The most serious cases occur at the railway section between Akesu and Kashi, 108 km in length. This kind of problem has been gradually found since the opening of the railway in 1999. The causes include local natural, engineering and hydrogeological conditions. The main defective forms are salinity exposure, surface expansion, subgrade compaction, sinking, track deformation, and so on. On the one hand, these defects increase the difficulty and workload of maintenance departments; on the other hand, they also seriously affect the traffic safety. An intelligent control test system is designed to study these problems. Its main functions are to investigate the secondary salinization phenomenon and transportation height of capillary water in the soil samples. The transport rules of water and salt are studied by means of the intelligent control test system based on two comparable cases of remolded saline and improved saline soils. The test results show that the secondary salinization phenomenon is not obvious in the improved saline soils. But the secondary salinization phenomenon is very obvious in the remolded saline soils under the same compression degree and physical condition. The secondary salinization degree gradually varies with the depth of soils. The Ⅲ-3 type improved saline soils on K938 are further tested parallelly. The results show that secondary salinization and the transportation height of capillary water can be controlled effectively if the fly ash, lime and cement are mixed into the saline soils with a certain proportion. The research results are successfully employed to solve the secondary salinization problem of the subgrade of southern Xinjiang Railway. There have been no new defects for more than 6 years.
- saline soil /
- improved saline soil /
- secondary salinization /
- experimental equipment

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参考文献(14)

[1]	FOOKES P G, FRENCH W J. Soluble salt damage to surfaced roads in middle east[J]. Highway Engineer, 1977, 24(12): 10-20.
[2]	汪林, 甘泓, 于福亮, 等. 西北地区盐渍土及其开发利用中存在问题的对策[J]. 水利学报, 2001(6): 90-94. (WANG Lin, GAN Hong, YU Fu-liang, et al. Salted soil and its development in Northwest China[J]. Journal of Hydraulic Engineering, 2001(6): 90-94. (in Chinese))
[3]	王遵亲. 中国盐渍土[M]. 北京: 科学出版社, 1993. (WANG Zun-qin. Saline soil in China[M]. Beijing: Science Press, 1993. (in Chinese))
[4]	铁道部第一勘测设计院. 盐渍土地区铁路工程[M]. 北京: 中国铁道出版社, 1988. (The First Railway Survey and Design Institute. Saline soil in railway engineering[M]. Beijing: China Railway Publishing House, 1988. (in Chinese))
[5]	徐攸在. 盐渍土地基[M]. 北京: 中国建筑工业出版社, 1993. (XU You-zai. Saline soil foundation[M]. Beijing: China Architecture & Building Press, 1993. (in Chinese))
[6]	余侃柱. 中国内陆砂碎石盐渍土工程特性研究[C]// 中国岩石力学与工程学会第六次学术大会. 北京: 中国科学技术出版社, 2000, 10: 158-161. (YU Kan-zhu. Research on engineering properties of sand gravel saline soil in Chinese inland[C]// Chinese Journal of Rock Mechanics and Engineering Sixth Academic Meeting. Beijing: China Science and technology press, 2000, 10: 158-161. (in Chinese))
[7]	柴筠之. 盐渍土的工程性质[J]. 工程勘察, 1983(6): 3-6. (CHAI Jun-zhi. Engineering character of saline soil[J]. Geotechnical Investigation & Surveying, 1983(6): 3-6. (in Chinese))
[8]	张彧, 房建宏, 刘建坤, 等. 察尔汗地区盐渍土水热状态变化特征与水盐迁移规律研究[J]. 岩土工程学报, 2012, 34(7): 1344-1348. (ZHANG Yu, FANG Jian-hong, LIU Jian-kun, et al. Variation characteristics of hydrothermal state and migration laws of water and salt in Qarhan Salt Lake region[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(7): 1344-1348. (in Chinese))
[9]	董斌, 张喜发, 李欣, 等. 毛细水上升高度综合试验研究[J]. 岩土工程学报, 2008, 30(10): 1569-1574. (DONG Bin, ZHANG Xi-fa, LI Xin, et al. Comprehensive tests on rising height of capillary water[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(10): 1569-1574. (in Chinese))
[10]	姚华, 张喜发, 张冬青. 影响粗粒土毛细水上升高度的因素研究[J]. 勘察科学技术, 2007(1): 10-12. (YAO Hua, ZHANG Xi-fa, ZHANG Dong-qing. Research on affecting factors of rising height of capillary water on coarse grained soil[J]. Site Investigation Science and Technology, 2007(1): 10-12. (in Chinese))
[11]	张彧, 房建宏, 刘建坤, 等. 强夯置换复合地基加固盐渍土效果的试验研究[J]. 岩土工程学报, 2011, 33(增刊1): 251-254. (ZHANG Yu, FANG Jian-hong, LIU Jian-kun, et al. Field tests on reinforcement effects of ground treatment of composite foundation in saline soils by dynamic compaction replacement[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(S1): 251-254. (in Chinese))
[12]	王兆东, 张雷. 盐渍土对路基的危害及防治[J]. 辽宁交通科技, 2005(1): 35-37. (WANG Zhao-dong, ZHANG Lei. Harmfulness of salty soil to subgrade and its preventing and treating[J]. Liaoning Communication Science and Technology, 2005(1): 35-37. (in Chinese))
[13]	赵德安, 余云燕, 陈志敏. 一种毛细水上升高度与次生盐渍化试验设备[P]. ZL200820210442.9, 2009-08-19. (ZHAO De-an, YU Yun-yan, CHEN Zhi-min. A kind of experimental equipment for the tranportation height of capillary water secongdery salinization[P]. ZL200820210442.9, 2009-08-19. (in Chinese))
[14]	余云燕, 赵德安, 彭典华, 等. 南疆铁路路基填料改良盐渍土的盐胀冻胀试验研究[J]. 兰州交通大学学报, 2009, 28(1): 1-5. (YU Yun-yan, ZHAO De-an, PENG Dian-hua, et al. Experimental research on frost heave and salt expansion of the improved saline soil of railway roadbed filling at south of Xinjiang[J]. Journal of Lanzhou Jiaotong University, 2009, 28(1): 1-5. (in Chinese))

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