[1]廖丽萍,等.桂东南容县花岗岩残积土粒度分形与物理参数的关系[J].山地学报,2019,(02):222-229.[doi:10.16089/j.cnki.1008-2786.000416]
 LIAO Liping,,et al.The Relationship between Particle Fractal and Physical Parameters of Granite Residual Soil in Rong County, Southeastern Guangxi Province, China[J].Mountain Research,2019,(02):222-229.[doi:10.16089/j.cnki.1008-2786.000416]
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桂东南容县花岗岩残积土粒度分形与物理参数的关系()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2019年02期
页码:
222-229
栏目:
山地灾害
出版日期:
2019-04-25

文章信息/Info

Title:
The Relationship between Particle Fractal and Physical Parameters of Granite Residual Soil in Rong County, Southeastern Guangxi Province, China
文章编号:
1008-2786-(2019)2-222-08
作者:
廖丽萍1 2 3文海涛4赵艳林1杨云川1 2 3*陈立华1
1.广西大学 土木建筑工程学院,南宁 530004; 2. 工程防灾与结构安全教育部重点实验室,南宁 530004; 3. 广西防灾减灾与工程安全重点实验室,南宁 530004; 4. 广西壮族自治区地质环境监测总站,广西 桂林 541000
Author(s):
LIAO Liping1 2 3 WEN Haitao4 ZHAO Yanlin1 YANG Yunchuan1 2 3* CHEN Lihua1
1. College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 2. Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning 530004, China; 3. Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, China; 4. Guangxi Zhuang Autonomous Region Geological Environmental Monitoring Station, Guangxi Guilin 541000, China
关键词:
容县 花岗岩残积土 分形特征 物理参数
Keywords:
Rong county Granite residual soil Particle fractal characteristics Physical parameter
分类号:
P642
DOI:
10.16089/j.cnki.1008-2786.000416
文献标志码:
A
摘要:
桂东南容县花岗岩残积土滑坡灾害频发。为明确残积土粒度组成以便揭示滑坡形成机制,文中基于花岗岩残积土的土工试验数据和详查资料,利用分形理论揭示四个深度(0~30 cm、30~50 cm、50~70 cm、滑动面(1~3 m))土体粒度分形特征与颗粒含量、物理性质参数的关系。结果表明:(1)花岗岩残积土主要由细砾(粒径2~5 mm)和砂粒(粒径0.075~2 mm)组成,粒度分布在无标度区间[0.075,5]内具有一重分形特征;(2)残积土平均分形维数由大即小依次是:D50-70(2.7244)>D滑动面(2.6910)>D0-30(2.6893)>D30-50(2.6480);(3)分形维数与粉砂含量呈极显著正相关,正相关性随深度增加而增大,与细砾和粗砂含量呈负相关性,即分形维数越大,粉砂含量越高,而细砾和粗砂含量越低;(4)D30-50、D滑动面与渗透系数、干密度呈显著负相关。
Abstract:
Landslides of granite residual soil in Rong county, southeastern Guangxi, occur frequently. In order to clarify the grain size of granite residual soil and reveal the landslide formation mechanism, in this paper, based on soil tests and detailed surveyed data, the fractal theory was used to study on the correlation between particle fractals and physical parameters of four depths(0~30 cm、30~50 cm、50~70 cm、sliding surface with a depth of 1~3 m). Results show that:(1)granite residual soil is mainly composed of fine gravel(with a diameter of 2~5 mm)and sand(with a diameter of 0.075~2 mm). Besides, one fractal feature exists in a non-scale interval between 0.075 and 5.(2)the average fractal dimension of granite residual soil is as follows: D50-70(2.7244)>Dsliding surface(2.6910)>D0-30(2.6893)>D30-50(2.6480).(3)a significant positive correlation is between fractal dimension and silt content, and correlation coefficient increases with soil depth. In addition, a negative correlation is between fractal dimension and fine gravel and coarse sand. In other words, larger fractal dimension corresponds to higher content of silt, lower content of fine gravel and coarse sand.(4)D30-50 and Dsliding surface has a significant negative correlation with permeability coefficient and dry density.

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相似文献/References:

[1]吴善百,廖丽萍*,韦 遥,等.初始干密度对桂东南降雨型花岗岩残积土滑坡起动模式的影响[J].山地学报,2020,(6):881.[doi:10.16089/j.cnki.1008-2786.000564]
 WU Shanbai,,et al.Effect of Initial Dry Density on Initiation Mode of Rainfall-Induced Granite Residual Soil Landslide, Southeastern Guangxi Province, China[J].Mountain Research,2020,(02):881.[doi:10.16089/j.cnki.1008-2786.000564]

备注/Memo

备注/Memo:
收稿日期(Received date):2017-8-18; 改回日期(Accepted date):2019-02-19
基金项目(Foundation item):国家自然科学基金(51609041); 广西科技厅基金(2018GXNSFAA138187); 广西教育厅基金(2018KY0027); 广西国土厅2018年项目(GXZC2018-G3-19302-JGYZ)。[National Natural Science Foundation of China(51609041); Natural Science Fund Project of Guangxi province of China(2018GXNSFAA138187); Project of the Education Department of Guangxi Province of China(2018KY0027); Project of the Department of Land and Resources of Guangxi Province of China(GXZC2018-G3-19302-JGYZ)]
作者简介(Biography):廖丽萍(1985-),女,博士,讲师,主要研究方向:地质灾害机理与防治技术。[LIAO LiPing(1985-), female, Ph.D., lecturer, research on mechanism and the prevention technology of geological hazards] E-mail: 01llp@163.com
*通讯作者(Corresponding author):杨云川(1982-),男,博士,副教授,主要研究方向:水文与水资源。[YANG Yunchuan(1982-), male, Ph.D., associate professor, research on hydrology and water resource] E-mail: yyunchuan@gxu.edu.cn
更新日期/Last Update: 2019-03-30