新疆伊犁南岸干渠黄土渠段湿陷性分析
|
摘要
新疆伊犁南岸干渠工程明渠段沿线风积黄土广布,黄土的湿陷性对工程具重要影响。本文依据规范并考虑工程实际,对区内黄土的湿陷性等级、起始湿陷压力、湿陷性黄土厚度进行了综合分析,分析了挖方渠道黄土的湿陷性程度;并在考虑降雨土体非饱和过程的条件下,对填方渠道土地基的湿陷变形量进行了详细深入的研究。通过分析认为,工程区黄土渠段为非自重湿陷性场地,湿陷等级为Ⅰ~Ⅱ级;压实后的黄土不具湿陷性;无论是挖方渠道还是填方渠道,经过换填处理和设置排水措施后,即可消除湿陷性,无需要再做专门处理措施。
There is a great area of loses along the Yili trunk ditch in Xinjiang province.The collapsibility of the losses with water has a great impact to construction in the region.On the basis of many tests,a detailed analysis about the grade,the initial pressure and the depth of loess collapaibilty,and the degree of loess collapaibilty along the ditch built by excavating is given in this paper.A deep analysis is also made to the collapaibilty along the ditch built by piling considering the unsaturation of loess.It reveals the grade of collapssility is Ⅰ～Ⅱ and belongs to the non-self-weight collapse loess in the field along the ditch and the loess would lose collapssility after being compacted.It is also found that the loess would lose its collapssility only by permutation and drainage.Other measures are not needed to remove the loess collapssility.
There is a great area of loses along the Yili trunk ditch in Xinjiang province.The collapsibility of the losses with water has a great impact to construction in the region.On the basis of many tests,a detailed analysis about the grade,the initial pressure and the depth of loess collapaibilty,and the degree of loess collapaibilty along the ditch built by excavating is given in this paper.A deep analysis is also made to the collapaibilty along the ditch built by piling considering the unsaturation of loess.It reveals the grade of collapssility is Ⅰ～Ⅱ and belongs to the non-self-weight collapse loess in the field along the ditch and the loess would lose collapssility after being compacted.It is also found that the loess would lose its collapssility only by permutation and drainage.Other measures are not needed to remove the loess collapssility.
引文
[1]南京水利科学研究院.土工试验规程(SL237-1999)[S].北京:中国水利水电出版社,1999.Nanjing Hydraulic Reaserch Institute.Specification of soil test(SL237-1999).Beijing:China Water Power Press,1999.
[2]国家水利部,原国家电力工业部.水利水电工程地质勘察规范(GB50287~99)[S].北京:中国计划出版社,1999.The Ministry of Water Resourse of the People’s Republic of China,the Former Power Bureaux and Communications Offices.Code forwater resourse and hydraulic engineering gelological invistation(GB50287~99).Beijing:China Palnning Press,1999.
[3]陕西省计划委员会.湿陷性黄土地区建筑规范(GB50025-2004)[S].北京:中国建筑出版社,2004.Shanxi Planning Committee.Code for buliding construction in col-lapsible loess region(GB50025-2004).Beijing:China Srchitec-ture and Building Press,2004.
[4]郑宴武.中国黄土的湿陷性[M].北京:地质出版社,1982.Zheng Yanwu.Collapsibility of China loess.Beijing:GeologicalPublishing House,1982.
[5]袁夏,王兰民,王峻.考虑非饱和土与结构特征的黄土湿陷性讨论[J].西北地震学报,2007,29(1):12~17.Yuan Xia,Wang Lanmin,Wang Jun.Discussion water collapsibili-ty of loess considering unsaturated soil and structure characteristicsof loess.Norweten Seismologic Journal,2007,29(1):12~17.
[6]顾成权,孙艳.黄土湿陷起始压力判断探讨[J].水文地质工程地质,2004,(1):1~3.Gu Chengyan,Sun Yan.A discussion of original pressure of loesscollapsibilit.Hydrogeology and Engineering Geology,2004,(1):1~3.
[7]文君,魏彩萍,盛云鸥等.黄土湿陷性评价若干问题探讨[J].岩土工程师,2005,17(1):18~20.Wen Jun,Wei Caiping,Shen Yunou,et al..Discussion of a num-ber of quessitions of loess collapsibilit.Geotechnical Enginee,2005,17(1):18~20.
[8]贾国英.黄土湿陷性与物性关系的研究[J].电力学报,2004,19(4):344~346.Jia Guoying.Study on the relation between loess collapsibility andits physical property.Journal of Electric Power,2004,19(4):344~346.
[9]陈开圣.冲击压实技术在处治湿陷性黄土地基中的应用[J].工程地质学报,2006,14(3):390~393.Chen Kaisheng.Appucation of impact compaction techonology intreating highway subgrade of collapsible loess.Journal of Engineer-ing Geology,2006,14(3):390~393.
[9]倪万魁,颜斌,刘海松.公路路基黄土湿陷性评价问题[J].工程地质学报,2007,15(4):513~520.Ni Wankui,Yan Bin,Liu Haisong,et al..Evaluation of collapsibleloess subgrade along expressway.Journal of Engineering Geology,2007,15(4):513~520.
[10]宋章,程谦恭,张炜,孟凡超.原状黄土显微结构特征与湿陷性状分析[J].工程地质学报,2007,15(5):646~653.Song Zhang,Cheng Qiangong,Zhang Wei,Meng Fanchao.Anal-ysis of microstructure feature and collapsibility of undisturbed lo-ess.Journal of Engineering Geology,2007,15(3):646~653.
[2]国家水利部,原国家电力工业部.水利水电工程地质勘察规范(GB50287~99)[S].北京:中国计划出版社,1999.The Ministry of Water Resourse of the People’s Republic of China,the Former Power Bureaux and Communications Offices.Code forwater resourse and hydraulic engineering gelological invistation(GB50287~99).Beijing:China Palnning Press,1999.
[3]陕西省计划委员会.湿陷性黄土地区建筑规范(GB50025-2004)[S].北京:中国建筑出版社,2004.Shanxi Planning Committee.Code for buliding construction in col-lapsible loess region(GB50025-2004).Beijing:China Srchitec-ture and Building Press,2004.
[4]郑宴武.中国黄土的湿陷性[M].北京:地质出版社,1982.Zheng Yanwu.Collapsibility of China loess.Beijing:GeologicalPublishing House,1982.
[5]袁夏,王兰民,王峻.考虑非饱和土与结构特征的黄土湿陷性讨论[J].西北地震学报,2007,29(1):12~17.Yuan Xia,Wang Lanmin,Wang Jun.Discussion water collapsibili-ty of loess considering unsaturated soil and structure characteristicsof loess.Norweten Seismologic Journal,2007,29(1):12~17.
[6]顾成权,孙艳.黄土湿陷起始压力判断探讨[J].水文地质工程地质,2004,(1):1~3.Gu Chengyan,Sun Yan.A discussion of original pressure of loesscollapsibilit.Hydrogeology and Engineering Geology,2004,(1):1~3.
[7]文君,魏彩萍,盛云鸥等.黄土湿陷性评价若干问题探讨[J].岩土工程师,2005,17(1):18~20.Wen Jun,Wei Caiping,Shen Yunou,et al..Discussion of a num-ber of quessitions of loess collapsibilit.Geotechnical Enginee,2005,17(1):18~20.
[8]贾国英.黄土湿陷性与物性关系的研究[J].电力学报,2004,19(4):344~346.Jia Guoying.Study on the relation between loess collapsibility andits physical property.Journal of Electric Power,2004,19(4):344~346.
[9]陈开圣.冲击压实技术在处治湿陷性黄土地基中的应用[J].工程地质学报,2006,14(3):390~393.Chen Kaisheng.Appucation of impact compaction techonology intreating highway subgrade of collapsible loess.Journal of Engineer-ing Geology,2006,14(3):390~393.
[9]倪万魁,颜斌,刘海松.公路路基黄土湿陷性评价问题[J].工程地质学报,2007,15(4):513~520.Ni Wankui,Yan Bin,Liu Haisong,et al..Evaluation of collapsibleloess subgrade along expressway.Journal of Engineering Geology,2007,15(4):513~520.
[10]宋章,程谦恭,张炜,孟凡超.原状黄土显微结构特征与湿陷性状分析[J].工程地质学报,2007,15(5):646~653.Song Zhang,Cheng Qiangong,Zhang Wei,Meng Fanchao.Anal-ysis of microstructure feature and collapsibility of undisturbed lo-ess.Journal of Engineering Geology,2007,15(3):646~653.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心