南宁第三系浅表层风化泥岩物理力学及膨胀特性指标分析
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摘要
通过对南宁市201个工程第三系泥岩资料进行的分析,对各物理、力学及膨胀性指标进行统计研究,为南宁盆地地下工程的参数选取提供参考。研究表明,南宁第三系浅表层风化泥岩物理指标变异性较小,尤其在95%置信区间取值范围偏差较小,在参数分析时可作为常量考虑;而力学指标和膨胀特性指标数据变异性较大,需要考虑其差异性。南宁第三系泥岩具有抗压强度高,压缩性低,抗剪强度高,黏聚力大的特点。膨胀特性指标方面,南宁第三系泥岩的自由膨胀率与其他城市膨胀岩土相比偏低,为弱膨胀性岩土;膨胀力因岩组成因和风化程度不同差异较大,建议在参数选取时针对具体工程考虑。
This paper examines the data of 201 projects for the tertiary mudstone in Nanning.The statistics for physical,mechanical and swelling indexes are obtained.A reference for parameters selection of underground engineering in Nanning is provided.The results show that the physical indexes can be used as constants for its low variability,in particular in the 95% confidence interval statistics.Mechanical indexes and swelling indexes data variability are bigger,which need to consider the variability.The tertiary mudstone in Nanning is a typical expansive rock and soil.It has high compressive strength,low compressibility,large shearing strength,and especially large cohesion force.In swelling indexes,the free swelling ratio of the mudstone in Nanning is lower compared with those in other cities.So it can be identified as weak swelling rock and soil.The swelling force is larger differently due to the rock composition and the difference of weathering degree.The parameters selection should be considered specifically when parameters selection.
This paper examines the data of 201 projects for the tertiary mudstone in Nanning.The statistics for physical,mechanical and swelling indexes are obtained.A reference for parameters selection of underground engineering in Nanning is provided.The results show that the physical indexes can be used as constants for its low variability,in particular in the 95% confidence interval statistics.Mechanical indexes and swelling indexes data variability are bigger,which need to consider the variability.The tertiary mudstone in Nanning is a typical expansive rock and soil.It has high compressive strength,low compressibility,large shearing strength,and especially large cohesion force.In swelling indexes,the free swelling ratio of the mudstone in Nanning is lower compared with those in other cities.So it can be identified as weak swelling rock and soil.The swelling force is larger differently due to the rock composition and the difference of weathering degree.The parameters selection should be considered specifically when parameters selection.
引文
[1]谭罗荣,孔令伟.特殊岩土工程土质学[M].北京:科学出版社,2006,90~91.Tan Luorong,Kong Lingwei.Soil Science of Special Geotechnical Engineering.Beijing:Science Press,2006,90~91.
[2]范秋雁.膨胀岩与工程[M].北京:科学出版社,2008,25~35.Fan Qiuyan.Swelling Rock and Engineering.Beijing:Science Press,2008,25~35.
[3]吕海波,曾召田,赵艳林,等.膨胀土强度干湿循环试验研究.[J].岩土力学,2009,30(12):3797~3802.LüHaibo,Zeng Zhaotian,Zhao Yanlin,et al.Experimental studies of strength of expansive soil in drying and wetting cycle.Rock and Soil Mechanics,2009,30(12):3797~3802.
[4]李雄威,王勇,张勇.南宁地区膨胀土膨胀力的现场测试[J].工程勘察,2012,(9):1~3.Li Xiongwei,Wang Yong,Zhang Yong.Field test of swelling force on expansive soil in Nanning.Geotechnical Investigation&Surveying,2012,(9):1~3.
[5]马福荣,张信贵.南宁盆地第三系泥岩物理性质与强度关系的研究[J].岩土力学,2005,26(增2):123~125.Ma Furong,Zhang Xingui.Relationship between physical character and strength of mudstone of Tertiary in Nanning basin.Rock and Soil Mechanics,2005,26(S2):123~125.
[6]张油军.南宁市轨道交通一号线沿线岩层组合模型及区划研究[D].南宁:广西大学,2012.Zhang Youjun.Combination Modeling and Zone Partition Study on the Construction Area along Nanning's Subway Line No.1.Nanning:Guangxi University,2012.
[7]张征,刘淑春,邹正盛,等.岩土参数的变异性及其评价方法[J].土木工程学报,1995,28(6):43~51.Zhang Zheng,Liu Shuchun,Zou Zhengsheng,et al.The variability and evaluation of parameters of rock and soil.China Civil Engineering Journal,1995,28(6):43~51.
[8]陈炜韬,王玉锁,王明年,等.黏土质隧道围岩抗剪强度参数的概率分布及优化实例[J].岩石力学与工程学报,2006,25(S2):3782~3787.Chen Weitao,Wang Yusuo,Wang Mingnian,et al.Probability distribution and optimizing example of shear strength parameters of surrounding rock in cohesive soil tunnel.Chinese Journal of Rock Mechanics and Engineering,2006,25(S2):3782~3787.
[9]张继周,缪林昌,陈俊波.苏中腹地湖相软土土性参数变异性统计描述[J].岩土力学,2010,31(2):471~477.Zhang Jizhou,Miao Linchang,Chen Junbo.Statistical characterization of variability of lacustrine soft soil in central region of Jiangsu province.Rock and Soil Mechanics,2010,31(2):471~477.
[10]张先伟,孔令伟,郭爱国,等.湛江强结构性黏土的物理力学性质指标及相关性分析[J].工程地质学报,2011,19(4):447~454.Zhang Xianwei,Kong Lingwei,Guo Aiguo,et al.Physical and mechanical indexes and correlation analysis of clay with noticeable structures in Zhanjiang area.Journal of Engineering Geology,2011,19(4):447~454.
[11]曹亮,李晓昭,赵晓豹,等.苏州软弱敏感层的土体微观结构定量分析[J].工程地质学报,2012,20(3):419~426.Cao Liang,Li Xiaozhao,Zhao Xiaobao,et al.Experimental and digital image study on micro-structure of soft soil in strengthsensitive strata in Suzhou city.Journal of Engineering Geology,2012,20(3):419~426.
[12]膨胀土地区建筑技术规范(GBJ112-87)[S].北京:中国计划出版社,1989.Expansive Soil Area Construction Technical Specification(GBJ112-87).Beijing:China Planning Press,1989.
[2]范秋雁.膨胀岩与工程[M].北京:科学出版社,2008,25~35.Fan Qiuyan.Swelling Rock and Engineering.Beijing:Science Press,2008,25~35.
[3]吕海波,曾召田,赵艳林,等.膨胀土强度干湿循环试验研究.[J].岩土力学,2009,30(12):3797~3802.LüHaibo,Zeng Zhaotian,Zhao Yanlin,et al.Experimental studies of strength of expansive soil in drying and wetting cycle.Rock and Soil Mechanics,2009,30(12):3797~3802.
[4]李雄威,王勇,张勇.南宁地区膨胀土膨胀力的现场测试[J].工程勘察,2012,(9):1~3.Li Xiongwei,Wang Yong,Zhang Yong.Field test of swelling force on expansive soil in Nanning.Geotechnical Investigation&Surveying,2012,(9):1~3.
[5]马福荣,张信贵.南宁盆地第三系泥岩物理性质与强度关系的研究[J].岩土力学,2005,26(增2):123~125.Ma Furong,Zhang Xingui.Relationship between physical character and strength of mudstone of Tertiary in Nanning basin.Rock and Soil Mechanics,2005,26(S2):123~125.
[6]张油军.南宁市轨道交通一号线沿线岩层组合模型及区划研究[D].南宁:广西大学,2012.Zhang Youjun.Combination Modeling and Zone Partition Study on the Construction Area along Nanning's Subway Line No.1.Nanning:Guangxi University,2012.
[7]张征,刘淑春,邹正盛,等.岩土参数的变异性及其评价方法[J].土木工程学报,1995,28(6):43~51.Zhang Zheng,Liu Shuchun,Zou Zhengsheng,et al.The variability and evaluation of parameters of rock and soil.China Civil Engineering Journal,1995,28(6):43~51.
[8]陈炜韬,王玉锁,王明年,等.黏土质隧道围岩抗剪强度参数的概率分布及优化实例[J].岩石力学与工程学报,2006,25(S2):3782~3787.Chen Weitao,Wang Yusuo,Wang Mingnian,et al.Probability distribution and optimizing example of shear strength parameters of surrounding rock in cohesive soil tunnel.Chinese Journal of Rock Mechanics and Engineering,2006,25(S2):3782~3787.
[9]张继周,缪林昌,陈俊波.苏中腹地湖相软土土性参数变异性统计描述[J].岩土力学,2010,31(2):471~477.Zhang Jizhou,Miao Linchang,Chen Junbo.Statistical characterization of variability of lacustrine soft soil in central region of Jiangsu province.Rock and Soil Mechanics,2010,31(2):471~477.
[10]张先伟,孔令伟,郭爱国,等.湛江强结构性黏土的物理力学性质指标及相关性分析[J].工程地质学报,2011,19(4):447~454.Zhang Xianwei,Kong Lingwei,Guo Aiguo,et al.Physical and mechanical indexes and correlation analysis of clay with noticeable structures in Zhanjiang area.Journal of Engineering Geology,2011,19(4):447~454.
[11]曹亮,李晓昭,赵晓豹,等.苏州软弱敏感层的土体微观结构定量分析[J].工程地质学报,2012,20(3):419~426.Cao Liang,Li Xiaozhao,Zhao Xiaobao,et al.Experimental and digital image study on micro-structure of soft soil in strengthsensitive strata in Suzhou city.Journal of Engineering Geology,2012,20(3):419~426.
[12]膨胀土地区建筑技术规范(GBJ112-87)[S].北京:中国计划出版社,1989.Expansive Soil Area Construction Technical Specification(GBJ112-87).Beijing:China Planning Press,1989.
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