沙漠公路盐渍化软弱地基处理技术研究
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摘要
以通古勒格淖尔至额尔克哈什哈公路(蒙甘界)为依托工程,通过现场挖探、取样试验确定盐渍土的物理、力学性质和工程水文地质情况。建立现场试验路,采用经济合理的盐渍化软弱地基风积沙和砂砾换填处治方案,研究在不同换填材料、换填深度等条件下地基处治效果。通过试验段施工期与运营期沉降监测对换填效果进行验证和评价,提出适合内蒙古腾格里沙漠公路特殊路基处治技术。
Based on Tonggulege Nur to Elk Hashha( the intersection of Inner Mongolia and Gansu) highway construction,the physical,mechanical properties and engineering hydrogeology of saline soil is determined through site excavation and sampling test. Through field test road,it took economical and feasible aeolian sand and gravel replacing and filling treatment program for salinized soft foundation to study the foundation treatment effect under different conditions of replacing and filling materials and depth. The replacing and filling effect is tested and evaluated by settlement monitoring during the period of construction and operation and the treatment technology suitable for the special subgrade of Tengger desert highway in Inner Mongolia is put forward.
Based on Tonggulege Nur to Elk Hashha( the intersection of Inner Mongolia and Gansu) highway construction,the physical,mechanical properties and engineering hydrogeology of saline soil is determined through site excavation and sampling test. Through field test road,it took economical and feasible aeolian sand and gravel replacing and filling treatment program for salinized soft foundation to study the foundation treatment effect under different conditions of replacing and filling materials and depth. The replacing and filling effect is tested and evaluated by settlement monitoring during the period of construction and operation and the treatment technology suitable for the special subgrade of Tengger desert highway in Inner Mongolia is put forward.
引文
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[2]韩宇翔,程弘毅.腾格里沙漠边缘地区近50a气温、降水变化特征分析[D].兰州:兰州大学,2012:1-11.HAN Y X,CHENG H Y.The characteristics of temperature and precipitation in recent 50a of the edge of the Tengger desert[D].Lanzhou:Lanzhou University,2012:1-11.
[3]郑熠.近49年来腾格里沙漠边缘气象要素分析研究[D].兰州:兰州大学,2014.ZHENG Y.The analysis about the meteorological elements in the surrounding area of Tengger desert during the recent 49a[D].Lanzhou:Lanzhou University,2014.
[4]刘振敏.腾格里沙漠区盐湖物质成分研究[J].盐湖研究,2000,8(3):21-26.LIU Z M.Research on material composition of Salt Lakes in Tenggeli desert region[J].Journal of Salt Lake Research,2000,8(3):21-26.
[5]李博昀,刘振敏,徐少康,等.腾格里沙漠地区盐湖钾盐资源特征[J].盐湖研究,2002,10(1):18-23.LI B Y,LIU Z M,XU S K,et al.Characteristics of sylvine resources of Salt Lakes in Tenggeli desert region[J].Journal of Salt Lake Research,2002,10(1):18-23.
[6]哈斯,董光荣,王贵勇.腾格里沙漠东南缘格状沙丘的形态-动力学研究[J].中国科学D辑:地球科学,1999,29(5):466-471.HA S,DONG G R,WANG G Y.Morphodynamic study of reticulate dunes at southeastern fringe of the Tengger Desert[J].Science in China Series D:Earth Sciences,1999,29(5):466-471.
[7]JTG E40—2007公路土工试验规程[S].北京:人民交通出版社,2007.JTG E40—2007 Test Methods of Soils for Highway Engineering[S].Beijing:China Communications Press,2007.
[8]张留俊.公路工程水质分析试验操作指南[M].西安:西北工业大学出版社,2003.
[9]刘吉福,莫海鸿.对公路容许工后沉降的建议[J].路基工程,2007(4):127-128.LIU J F,MO H H.Suggestion about allowable settlement after construction for highway[J].Subgrade Engineering,2007(4):127-128.
[10]李茂英,曾庆军,莫海鸿,等.高速公路拓宽工程沉降控制复合地基优化设计[J].岩土力学,2008,29(2):535-540.LI M Y,ZENG Q J,MO H H,et al.Optimum design of composite foundation according to settlement control for extension project of expressway[J].Rock and Soil Mechanics,2008,29(2):535-540.
[11]JTG/T D31-02—2013公路软土地基路堤设计与施工技术细则[S].北京:人民交通出版社,2013.JTG/T D31-02—2013 Technical Guidelines for Design and Construction of Highway Embankment on Soft Ground[S].Beijing:China Communications Press,2013.