贵州高液限红粘土的分布特征及工程应用
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摘要
贵州红粘土分布范围广,具有高液限的特点,在工程建设中经常遇到。针对高液限红粘土在贵州不同地区的分布特征及其对工程应用的影响,通过野外调查和采样、室内实验、现场观测等手段,采用数学统计方法,对高液限红粘土的分布特征进行阐述,并分析高液限产生差异的原因,同时依据工程实例探讨高液限红粘土作为路基填筑材料的可能性。根据134个红粘土样品液限统计结果表明,位于中部的贵阳液限值最高,位于西部的水城液限值最低,且从西部到东部有逐渐增大的趋势;通过工程实例可知,高液限红粘土压实度和CBR值都能充分满足路基填筑材料要求,同时填筑路基边坡的稳定性也能得到保证,可供高液限红粘土地区的工程建设参考。
The red clay is widely distributed and has the characteristics of high liquid limit in Guizhou.It is often encountered in engineering construction.According to the distribution characteristics of high liquid limit red clay in different areas of Guizhou and its influence on engineering application,through field investigation and sampling,laboratory experiments,on-site observation and other means,mathematical statistical methods were used to elaborate the distribution characteristics of high liquid limit red clay and analyze the reasons for the difference in high liquid limit,and explore the possibility of high liquid limit red clay as a roadbed filling material according to engineering examples.According to the statistical results of 134 red clay samples,the high liquid limit red clay has the highest liquid limit in Guiyang in the middle and the lowest liquid limit in Shuicheng in the west,with a trend of increasing gradually from the west to the east.According to the engineering example,the high liquid limit red clay compaction degree and CBR value can fully meet the requirements of roadbed filling materials,and the stability of filling the roadbed slope can also be guaranteed.It can be used as a reference for engineering construction in the high liquid limit red clay area.
The red clay is widely distributed and has the characteristics of high liquid limit in Guizhou.It is often encountered in engineering construction.According to the distribution characteristics of high liquid limit red clay in different areas of Guizhou and its influence on engineering application,through field investigation and sampling,laboratory experiments,on-site observation and other means,mathematical statistical methods were used to elaborate the distribution characteristics of high liquid limit red clay and analyze the reasons for the difference in high liquid limit,and explore the possibility of high liquid limit red clay as a roadbed filling material according to engineering examples.According to the statistical results of 134 red clay samples,the high liquid limit red clay has the highest liquid limit in Guiyang in the middle and the lowest liquid limit in Shuicheng in the west,with a trend of increasing gradually from the west to the east.According to the engineering example,the high liquid limit red clay compaction degree and CBR value can fully meet the requirements of roadbed filling materials,and the stability of filling the roadbed slope can also be guaranteed.It can be used as a reference for engineering construction in the high liquid limit red clay area.
引文
[1]刘前明.贵州红粘土工程地质特征探讨[J].中国煤田地质,2002,14(2):47-48.
[2]韩贵琳.贵阳地区红粘土工程地质特征[J].贵州地质,1992,9(3):292-295.
[3]姜洪涛.红粘土的成因及其对工程性质的影响[J].水文地质工程地质,2000,27(3):33-37.
[4]廖义玲.粘性土三相间相互作用及对相关指标的影响[J].工程勘察,2001(3):4-6.
[5]贺珺.黔中红粘土物理性质指标特殊性研究[D].贵阳:贵州大学,2009.
[6]李光耀,李卫民.贵州不同地区红土地质化作用的差异性对红粘土基本性质影响分析[J].工程勘察,2010(增刊1):127-132.
[7]卢雪松,项伟,范文彦. ISS固化土工程特性试验研究[J].人民长江,2009,40(15):67-69.
[8]任佳丽,林青芝.昆明新机场碳酸岩风化区不均匀地基处理[J].人民长江,2010,41(21):69-72.
[9]张伟华.衡栆高速公路高液限粘土的主要工程性质[J].湖南交通科技,2003,29(2):39-40.
[10]王焕新.广西红粘土填筑性能及土质学特征[D].南宁:广西大学,2012.
[11]王鹏.湖南地区红粘土路基填筑关键技术研究[D].长沙:中南林业科技大学,2016.
[12]杨建华,唐锡彬,王强.改良用高液限红粘土作回填土填料性质的方法研究[J].地下水,2014,36(3):153-155.
[13]廖义玲,毕庆涛,姜国萍,等.碳酸盐岩地表岩溶与红粘土[J].地球与环境,2005,33(4):13-19.
[2]韩贵琳.贵阳地区红粘土工程地质特征[J].贵州地质,1992,9(3):292-295.
[3]姜洪涛.红粘土的成因及其对工程性质的影响[J].水文地质工程地质,2000,27(3):33-37.
[4]廖义玲.粘性土三相间相互作用及对相关指标的影响[J].工程勘察,2001(3):4-6.
[5]贺珺.黔中红粘土物理性质指标特殊性研究[D].贵阳:贵州大学,2009.
[6]李光耀,李卫民.贵州不同地区红土地质化作用的差异性对红粘土基本性质影响分析[J].工程勘察,2010(增刊1):127-132.
[7]卢雪松,项伟,范文彦. ISS固化土工程特性试验研究[J].人民长江,2009,40(15):67-69.
[8]任佳丽,林青芝.昆明新机场碳酸岩风化区不均匀地基处理[J].人民长江,2010,41(21):69-72.
[9]张伟华.衡栆高速公路高液限粘土的主要工程性质[J].湖南交通科技,2003,29(2):39-40.
[10]王焕新.广西红粘土填筑性能及土质学特征[D].南宁:广西大学,2012.
[11]王鹏.湖南地区红粘土路基填筑关键技术研究[D].长沙:中南林业科技大学,2016.
[12]杨建华,唐锡彬,王强.改良用高液限红粘土作回填土填料性质的方法研究[J].地下水,2014,36(3):153-155.
[13]廖义玲,毕庆涛,姜国萍,等.碳酸盐岩地表岩溶与红粘土[J].地球与环境,2005,33(4):13-19.