Analysis of Microscopic Pore Structure of “Micro-expansive” Mudstone in High Speed Railway based on Fractal Dimension

ZHANG Tangyu

您当前的位置：

首页 >

文章列表页 >

Analysis of Microscopic Pore Structure of “Micro-expansive” Mudstone in High Speed Railway based on Fractal Dimension

更新时间：2025-09-25

- Analysis of Microscopic Pore Structure of “Micro-expansive” Mudstone in High Speed Railway based on Fractal Dimension
- Issue 1, Pages: 56-62(2020)
- 作者机构：
  
  兰州交通大学土木工程学院,甘肃,兰州,730070
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Published：2020
- 稿件说明：
移动端阅览
张唐瑜,马丽娜,张戎令,王起才,王天双,王炳忠.基于分形维数的高速铁路“微膨胀性”泥岩微观孔结构分析∗[J].防灾减灾工程学报,2020,(1):56-62

ZHANG Tangyu. Analysis of Microscopic Pore Structure of “Micro-expansive” Mudstone in High Speed Railway based on Fractal Dimension[J]. 2020, (1): 56-62.
张唐瑜,马丽娜,张戎令,王起才,王天双,王炳忠.基于分形维数的高速铁路“微膨胀性”泥岩微观孔结构分析∗[J].防灾减灾工程学报,2020,(1):56-62 DOI：

ZHANG Tangyu. Analysis of Microscopic Pore Structure of “Micro-expansive” Mudstone in High Speed Railway based on Fractal Dimension[J]. 2020, (1): 56-62. DOI：

摘要

微膨胀性泥岩严重影响高速铁路的平稳运行，为研究压实作用对高速铁路微膨胀性泥岩微孔隙结构的影响，采用冻干法将压片机制备的不同干密度的试样进行干燥，应用压汞仪定量测定其孔隙分布特征。研究结果表明：随着试样干密度及进汞压力的增大，试验界限进汞压力逐渐增加，最大进汞量逐渐减小；不同干密度试样的孔隙特征分布曲线均呈现出明显的三峰特征，据此将试样孔隙分为大孔、中孔和小孔三类；采用与研究土体粒径级配类似的方法对孔隙的分布进行了分析，发现不同干密度的试样，小孔隙占比均较大；压实作用对大孔隙影响显著；采用Menger海绵模型及热力学关系模型对泥岩孔隙结构的分形特征进行了研究，研究发现泥岩干密度越大，泥岩孔隙内壁越粗糙，孔隙结构越复杂。研究成果可为膨胀泥岩地区高速铁路修建提供参考依据，对该地区同类工程建设具有借鉴意义。

Abstract

Micro expansive mudstone affects the smooth operation of high-speed railway seriously. In order to study the effect of compaction on the micro-pore structure of micro expansive mudstone of high speed railway

the freeze-drying method is applied to dry the samples with different dry densities using the tablet machine

and then the mercury porosimeter is used to measure the pore distribution characteristics quantitatively. The results show that with the increase of the dry density of the sample and mercury pressure

the mercury pressure limit of the test gradually increases

and the maximum amount of mercury decreases gradually. The pore distribution curves of different samples with different dry density all show three obvious peaks

according to this characteristic

the pores in the sample are classified into three types: large pore

mesopore

and small pore. The distribution of pores was analyzed by the same method as that used to study the particle size distribution of soils. It is found that the samples with different dry densities had a larger proportion of small pores; compaction has a significant effect on large pores. The Menger sponge model and thermodynamic relationship model were used to study the fractal characteristics of the pore structure of mudstone. It was found that the higher the dry density of mudstone

the more rough is the pore wall of mudstone and more complicated the pore structure. The research results can provide reference for the construction of high speed railway in the swelling mudstone area

and can be used as a reference in similar projects in this area.

关键词

Keywords

references

丁建文,洪振舜,刘松玉.疏浚淤泥流动固化土的压汞试验研究[J].岩土力学,2011,32(12):3 591-3 596,3 603. Ding J W,Hong Zh Sh,Liu S Y.Microstructure study of flow-solidified soil of dredged clays by mercury intrusion porosimetry [J].Rock and Soil Mechanics,2011,32(12):3 591-3 596,3 603.(in Chinese)

张泽林,吴树仁,唐辉明,等.黄土和泥岩的动力学特性及微观损伤效应[J].岩石力学与工程学报,2017,36(5):1 256-1 268. Zhang Z L,Wu Sh R,Tang H M,et al.Dynamic characteristics and microcosmic damage effect of loess and mudstone [J].Chinese Journal of Rock Mechanics and Engineering,2017,36（5）：1 256-1 268.(in Chinese)

周建，邓以亮，曹洋，等.杭州饱和软土固结过程微观结构试验研究[J].中南大学学报(自然科学版),2014,45(6):1998-2005. Zhou J,Deng Y L,Cao Y,et al.Experimental study of microstructure of Hangzhou saturated soft soil during consolidation process [J].Journal of Central South University(Science and Technology),2014,45(6):1 998-2 005.(in Chinese)

马丽娜，严松宏，张戎令，等.低黏土矿物含量泥岩浸水膨胀变形的试验研究[J].工业建筑，2015，45(11):111-115,196. Ma L N,Yan S H,Zhang R L,et al.Experimental research on soaking swelling deformation of mudstone with low content of clay minerals[J].Industrial Construction,2015,45(11):111-115,196.(in Chinese)

马丽娜，严松宏，王起才，等.哈密地区膨胀性泥岩膨胀特性研究[J].兰州交通大学学报，2015，34(1):17-22. Ma L N,Yan S H,Wang Q C,et al.Research on the characteristics of expansive mudstone in Kumul prefecture [J].Journal of Lanzhou Jiaotong University,2015,34(1):17-22.(in Chinese)

薛彦瑾，王起才，张戎令，等.高速铁路地基膨胀土膨胀变形试验研究[J].铁道科学与工程学报，2017，14(4):690-696. Xue Y J,Wang Q C,Zhang R L,et al.Experimental study on expansive deformation of expansive soil in high speed railway [J].Journal of Railway Science and Engineering,2017,14(4):690-696.(in Chinese)

Tanaka H,Locat J.A microstructural investigation of Osaka Bay clay:The impact of microfossils on its mechanical behavior [J].Canadian Geotechnical Journal,1999,36(3):493-508.

Penumadu D,Dean J.Compressibility effect in evaluating the pore-size distribution of kaolin clay using mercury intrusion porosimetry [J].Canadian Geotechnical Journal,2000,37(2):393-405.

Hong Z,Tateishi Y,Han J.Experimental study of macro and micro-behavior of natural diatomite [J].Geotechnical and Geoenvironmental Engineering,ASCE,2006,132(5):603-610.

Ivan Fernando Otalvaro,Manoel Porfírio Cord?o Neto,et al.Relationship between soil structure and water retention properties in a residual compacted soil [J].Engineering Geology,2016,2（16）：73-80.

王清，王剑平.土孔隙的分形几何研究[J].岩土工程学报，2000，23(4):496-498. Wang Q,Wang J P.A study on fractal of porosity in the soils [J].Chinese Journal of Geotechnical Engineering,2000，23(4):496-498.(in Chinese)

铁路工程土工试验规程：TB10102—2010[S].北京：中国铁道出版社，2010.Code for geotechnical test of railway engineering:TB10102—2010[S].Beijing:China Railway Press,2010.(in Chinese)

张先伟，孔令伟，郭爱国，等.不同固结压力下强结构性黏土孔隙分布试验研究[J].岩土力学，2014，35(10):2 794-2 800. Zhang X W,Kong L W,Guo A G,et al.Experiment study of pore distribution of strong structural clay under different consolidation pressures [J].Rock and Soil Mechanics,2014,35(10):2 794-2 800.(in Chinese)

张英，邴慧.基于压汞法的冻融循环对土体孔隙特征影响的试验研究[J].冰川冻土，2015，37(1):169-174. Zhang Y,Bing H.Experimental study of the effect of freezing-thawing cycles on porosity characters of silty clay by using mercury intrusion porosimetr [J].Journal of Glaciology and Geocryology,2015,37(1):169-174.(in Chinese)

刘永忠，陈三强，孙皓.冻干物料孔隙特性表征的分形模型与分形维数[J].农业工程学报，2004，10(6):41-45. Liu Y Zh,Chen S Q,Sun H.Characterizing pores in freeze-dried materials by fractal models and fractal dimensions [J].Transactions of the Chinese Society of Agricultural Engineering,2004，10(6):41-45.(in Chinese)

Views

442

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on the Influence of Morphology of Rock Mass Fracture Surface on Its Seepage Characteristics

Related Author

Lingling DUAN

Huafeng DENG

Yu XIONG

Yongyan ZHI

Deng PAN

Yu QI

Related Institution

Key Laboratory of Geological Hazards on Three Gorges Reservoir Area (China Three Gorges University)， Ministry of Education

⁰