|Table of Contents|

Moisture Migration Mechanisms and Permeability Characteristics of Highly Weathered Phyllite Depositional Layers(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2025年第04期
Page:
555-569
Research Field:
黄河流域生态保护和高质量发展专刊(下)
Publishing date:

Info

Title:
Moisture Migration Mechanisms and Permeability Characteristics of Highly Weathered Phyllite Depositional Layers
Author(s):
CAO Yan-bo1; 2*; ZHANG Xiao1; FAN Wen1; 2; NAN Ya-lin2; ZHAO Jia-nan1
(1. School of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, Shaanxi, China; 2. China DK Comprehensive Engineering Investigation and Design Research Institute Co., Ltd., Xi'an 710054, Shaanxi, China)
Keywords:
phyllite;  moisture migration;  wetting front;  orientation;  granular composition;  permeability coefficient;  Shaanxi
PACS:
P642.2
DOI:
10.19814/j.jese.2024.12018
Abstract:
Strongly weathered phyllite depositional layer slopes are widely distributed in Qinling-Daba mountains, where rainfall infiltration is a critical factor inducing landslides. To investigate the infiltration mechanism and permeability characteristics of phyllite depositional layers, five groups of one-dimensional vertical infiltration tests were conducted under different rock orientation angles and granular composition conditions; using the wetting front advance method, the moisture migration mechanisms and related characteristics were analyzed, focusing on the temporal evolution of water content and matric suction, the dynamics of wetting front advance distance and velocity, and the functional relationship of permeability coefficient. The results show that ① the wetting front advance velocity at an rock orientation angle of 0° is significantly lower than that at the rock orientation angles of 30° and 60°; ② within a certain range, the wetting front advance velocity is primarily influenced by particle size and granular composition; the permeability coefficient is positively correlated with the rock block angle, and negatively correlated with fine particle content; ③ higher relative fine particle content in the depositional layer weakens permeability, while lower fine particle content enhances it; ④ the wetting front advance velocity exhibits a logarithmic decay over time, decreasing gradually with water infiltration; ⑤ in the high range of matric suction, the permeability coefficient decreases with increasing suction and stabilizes as suction decreases. Finally, the Gardner permeability model shows good agreement with the measured data.

References:

[1] 范立民,何进军,李存购.秦巴山区滑坡发育规律研究[J].中国地质灾害与防治学报,2004,15(1):44-48.
FAN Li-min,HE Jin-jun,LI Cun-gou.Study on Development Patterns of Landslide in Qinling-Bashan Mountains[J].The Chinese Journal of Geological Ha-zard and Control,2004,15(1):44-48.
[2] 杜继稳,李 明,王雁林,等.黄土高原及秦巴山区降雨型地质灾害预报预警研究[R].西安:陕西省气象台,2010.
DU Ji-wen,LI Ming,WANG Yan-lin,et al.Research on Rainfall-induced Geological Hazard Forecasting and Early Warning in the Loess Plateau and Qinling-Bashan Mountain Areas[R].Xi'an:Shaanxi Provincial Meteorological Observatory,2010.
[3] 魏心声.秦巴山区降雨诱发浅层滑坡机理及预测预警研究[D].西安:长安大学,2020.
WEI Xin-sheng.Research on Triggering Mechanism in Rainfall-induced Shallow Landslides and the Early-warning Application in Qinba Mountain Region[D].Xi'an:Chang'an University,2020.
[4] 刘 超,苏立君,刘文静.堆积层滑坡土石混合物细观结构特征研究综述[J].山地学报,2015,33(3):348-355.
LIU Chao,SU Li-jun,LIU Wen-jing.Review of Meso-structure Characteristic of Soil-rock Mixture in Accumulation Landslides[J].Mountain Research,2015,33(3):348-355.
[5] 李博融,杨更社.秦巴山区堆积层滑坡易损性评价方法研究[J].长江科学院院报,2012,29(10):73-77.
LI Bo-rong,YANG Geng-she.Vulnerability Assessment of Accumulation Landslide in Qinling-Bashan Mountain Area[J].Journal of Yangtze River Scientific Research Institute,2012,29(10):73-77.
[6] 周 中,傅鹤林,刘宝琛,等.土石混合体渗透性能的试验研究[J].湖南大学学报(自然科学版),2006,33(6):25-28.
ZHOU Zhong,FU He-lin,LIU Bao-chen,et al.Experimental Study of the Permeability of Soil Rock-mixture[J].Journal of Hunan University(Natural Sci-ences),2006,33(6):25-28.
[7] 周 中,傅鹤林,刘宝琛,等.土石混合体渗透性能的正交试验研究[J].岩土工程学报,2006,28(9):1134-1138.
ZHOU Zhong,FU He-lin,LIU Bao-chen,et al.Orthogonal Tests on Permeability of Soil-rock-mixture[J].Chinese Journal of Geotechnical Engineering,2006,28(9):1134-1138.
[8] 徐文杰,王永刚.土石混合体细观结构渗流数值试验研究[J].岩土工程学报,2010,32(4):542-550.
XU Wen-jie,WANG Yong-gang.Meso-structural Per-meability of S-RM Based on Numerical Tests[J].Chinese Journal of Geotechnical Engineering,2010,32(4):542-550.
[9] 赵晓彦,万宇豪,张肖兵.汶马高速公路千枚岩堆积体岩块定向性试验研究[J].岩土力学,2020,41(1):175-184.
ZHAO Xiao-yan,WAN Yu-hao,ZHANG Xiao-bing.Experimental Study of Fragment Orientation of Phy-llite Talus at Whenchuan-Ma'erkang Expressway[J].Rock and Soil Mechanics,2020,41(1):175-184.
[10] 曾彩云,赵晓彦,万宇豪,等.考虑岩块定向性的汶马高速公路千枚岩堆积体渗透特性试验研究[J].岩土工程学报,2023,45(4):862-868.
ZENG Cai-yun,ZHAO Xiao-yan,WAN Yu-hao,et al.Experimental Study on Permeability of Phyllite Talus in Whenchuan-Ma'erkang Expressway Considering Fragment Orientation[J].Chinese Journal of Geotechnical Engineering,2023,45(4):862-868.
[11] BARDEN L,PAVLAKIS G.Air and Water Permeabi-lity of Compacted Unsaturated Cohesive Soil[J].Jour-nal of Soil Science,1971,22(3):302-318.
[12] HUANG S Y,FREDLUND D G,BARBOUR S L.Measurement of the Coefficient of Permeability for a Deformable Unsaturated Soil Using a Triaxial Permeameter[J].Canadian Geotechnical Journal,1998,35(3):426-432.
[13] 邵龙潭,梁爱民,王助贫,等.非饱和土稳态渗流试验装置的研制与应用[J].岩土工程学报,2005,27(11):1338-1340.
SHAO Long-tan,LIANG Ai-min,WANG Zhu-pin,et al.Manufacture and Application of Steady Seepage Equipment for Unsaturated Soil[J].Chinese Journal of Geotechnical Engineering,2005,27(11):1338-1340.
[14] 徐永福,兰守奇,孙德安,等.一种能测量应力状态对非饱和土渗透系数影响的新型试验装置[J].岩石力学与工程学报,2005,24(1):160-164.
XU Yong-fu,LAN Shou-qi,SUN De-an,et al.New Apparatus for Measurement of Stress Effect on Permeability of Unsaturated Soil[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(1):160-164.
[15] GARDNER W R.Calculation of Capillary Conductivity from Pressure Plate Outflow Data[J].Soil Science Society of America Journal,1956,20(3):317-320.
[16] RICHARDS S J,WEEKS L V.Capillary Conductivity Values from Moisture Yield and Tension Measurements on Soil Columns[J].Soil Science Society of America Journal,1953,17(3):206-209.
[17] KRISDANI H,RAHARDJO H,LEONG E C.Use of Instantaneous Profile and Statistical Methods to Determine Permeability Functions of Unsaturated Soils[J].Canadian Geotechnical Journal,2009,46(7):869-874.
[18] 王 红,李同录,付昱凯.利用瞬态剖面法测定非饱和黄土的渗透性曲线[J].水利学报,2014,45(8):997-1003.
WANG Hong,LI Tong-lu,FU Yu-kai.Determining Permeability Function of Unsaturated Loess by Using Instantaneous Profile Method[J].Journal of Hydraulic Engineering,2014,45(8):997-1003.
[19] LI X,ZHANG L M,FREDLUND D G.Wetting Front Advancing Column Test for Measuring Unsaturated Hydraulic Conductivity[J].Canadian Geotechnical Journal,2009,46(12):1431-1445.
[20] 刘 丽,吴 羊,陈立宏,等.基于数值模拟的湿润锋前进法测量精度分析[J].岩土力学,2019,40(增1):341-349.
LIU Li,WU Yang,CHEN Li-hong,et al.Accuracy Analysis of Wetting Front Advancing Method Based on Numerical Simulation[J].Rock and Soil Mechani-cs,2019,40(S1):341-349.
[21] 刘阿强,李 旭,刘 艳,等.全吸力范围内渗透系数快速测定方法研究[J].岩土力学,2022,43(11):3209-3219.
LIU A-qiang,LI Xu,LIU Yan,et al.A Rapid Determination Method of Hydraulic Conductivity in Full Suction Range[J].Rock and Soil Mechanics,2022,43(11):3209-3219.
[22] 刘阿强.全吸力范围内土-水特征曲线和渗透系数快速测定方法研究[D].北京:北京交通大学,2023.
LIU A-qiang.Study on Rapid Determination Method of Soil-water Characteristic Curve and Hydraulic Conductivity in Full Suction Range[D].Beijing:Beijing Jiaotong University,2023.
[23] 钟 凯,谭晓慧,牛漫兰,等.基于降雨强度-历时评价边坡稳定性:以安徽省3个边坡为例[J].地球科学与环境学报,2023,45(6):1380-1388.
ZHONG Kai,TAN Xiao-hui,NIU Man-lan,et al.Evaluation of Slope Stability Based on Rainfall Intensity-duration:Taking Three Slopes in Anhui Provin-ce,China as Examples[J].Journal of Earth Sciences and Environment,2023,45(6):1380-1388.
[24] 王 力,南芳芸,王世梅,等.三峡库区降雨型滑坡入渗特征及变形机制:基于一维和二维模型试验研究[J].岩土力学,2023,44(5):1363-1374.
WANG Li,NAN Fang-yun,WANG Shi-mei,et al.Infiltration Characteristics and Deformation Mechanism of Rainfall-induced Landslides in Three Gorges Reservoir Area Based on 1D and 2D Model Tests[J].Rock and Soil Mechanics,2023,44(5):1363-1374.
[25] 史振宁,戚双星,付宏渊,等.降雨入渗条件下土质边坡含水率分布与浅层稳定性研究[J].岩土力学,2020,41(3):980-988,1085.
SHI Zhen-ning,QI Shuang-xing,FU Hong-yuan,et al.A Study of Water Content Distribution and Shallow Stability of Earth Slopes Subject to Rainfall Infiltration[J].Rock and Soil Mechanics,2020,41(3):980-988,1085.
[26] 蔡国庆,刘倩倩,杨 雨,等.基于湿润锋前进法的不同应力状态砂质黄土土柱渗流试验[J].水利学报,2021,52(3):291-299.
CAI Guo-qing,LIU Qian-qian,YANG Yu,et al.Seepage Experiments of Sandy Loess Soil Column with Different Stress States Based on Wetting Front Advancing Method[J].Journal of Hydraulic Engineering,2021,52(3):291-299.
[27] HU W,LI Y,GOU H X,et al.Hydraulic Properties of Co-seismic Landslide Deposits Around the Wenchuan Earthquake Epicentre:Large-scale Column Experiments[J].Engineering Geology,2021,287:106102.
[28] VAN GENUCHTEN M T.A Closed-form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils[J].Soil Science Society of America Journal,1980,44(5):892-898.
[29] FREDLUND D G,XING A Q,FREDLUND M D,et al.The Relationship of the Unsaturated Soil Shear Strength to the Soil-water Characteristic Curve[J].Canadian Geotechnical Journal,1996,33(3):440-448.
[30] GARDNER W R.Some Steady-state Solutions of the Unsaturated Moisture Flow Equation with Application to Evaporation from a Water Table[J].Soil Science,1958,85(4):228-232.

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Last Update: 2025-07-25