The influence of moisture-rich interlayers in palesol strata on the collapsibility of loess terrain

LI Lin; WANG Jiading; GU Qi; ZHANG Dengfei; JIAO Shaotong

doi:10.16152/j.cnki.xdxbzr.2024-01-009

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The influence of moisture-rich interlayers in palesol strata on the collapsibility of loess terrain

Engineering Geological Disasters | 更新时间：2024-01-18

- The influence of moisture-rich interlayers in palesol strata on the collapsibility of loess terrain
- Journal of Northwest University (Natural Science Edition) Vol. 54, Issue 1, Pages: 72-83(2024)
- 作者机构：
  
  西北大学　地质学系/大陆动力学国家重点实验室，陕西　西安　710069
- 作者简介：
- 基金信息：
- DOI：10.16152/j.cnki.xdxbzr.2024-01-009
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LI Lin, WANG Jiading, GU Qi, et al. The influence of moisture-rich interlayers in palesol strata on the collapsibility of loess terrain. [J]. Journal of Northwest University (Natural Science Edition) 54(1):72-83(2024)
DOI：

LI Lin, WANG Jiading, GU Qi, et al. The influence of moisture-rich interlayers in palesol strata on the collapsibility of loess terrain. [J]. Journal of Northwest University (Natural Science Edition) 54(1):72-83(2024) DOI： 10.16152/j.cnki.xdxbzr.2024-01-009.

摘要

黄土地层中往往交替分布着多层红色古土壤层，由于其硬度相对较高，遇水不易湿陷，对黄土地层湿陷量的测量结果有很大的影响。然而，对于古土壤对湿陷量的控制作用目前还缺乏相关研究，导致对湿陷地层湿陷量的科学取舍缺乏理论依据。为此该文统计了黄土高原区的浸水试验结果，分析了不同区域湿陷量室内外差异特征，并以西安地区两个试验场地的大型浸水试验为研究对象，进行了不同试验条件下土体中水分的扩散、含水率的变化、土压力变化以及累计湿陷量等测量工作。最终结果表明，古土壤层的存在阻碍湿陷进程，在阻止水分下渗的同时，阻碍深部地层湿陷量传递至地表，使得湿陷量实测值与计算值之间的差异与古土壤层数呈现正相关的趋势。该文将为普遍存在古土壤的黄土地层自重湿陷机理的研究提供参考。

Abstract

In loess formations, multiple layers of reddish ancient soil often alternate. Due to their relatively high hardness, they are resistant to collapsing when exposed to water, which significantly impacts the measurement results of the collapsibility of loess formations. However, there is currently a lack of research on the controlling role of ancient soils in collapsibility, leading to a lack of theoretical basis for making scientific decisions on the collapsibility of geological formations.To address this gap, this study compiled the results of inundation tests in the Loess Plateau region, analyzed the indoor and outdoor differences in collapsibility characteristics in different areas, and focused on large-scale inundation tests in two experimental sites in Xi’an. Various aspects were measured under different test conditions, including moisture diffusion in the soil, moisture content changes, soil pressure variations, and cumulative collapsibility.The final results indicate that paleosollayers hinder the collapsibility process by impeding water infiltration and preventing the transmission of deep-seated collapsibility to the surface. This leads to a positive correlation between the measured collapsibility values and the number of ancient soil layers. This study aims to provide insights into the self-weight collapsibility mechanisms in loess formations where ancient soil layers are commonly found.

关键词

古土壤浸水试验湿陷性湿陷系数黄土

Keywords

paleosolinundation testcollapsibilitycollapsibility coefficientloess

references

LIN Z G, LIANG W M. Distribution and engineering properties of loess and loesslike soils in China. Schematic map of engineering geological zoning[J]. Bulletin of the International Association of Engineering Geology-Bulletin de l’Association Internationale de Géologie de l’Ingénieur, 1980, 21(1): 112-117.

PYE K. Preface[M]//Aeolian dust and dust deposits. Amsterdam: Elsevier, 1987.

DERBYSHIRE E.Geological hazards in loess terrain, with particular reference to the loess regions of China[J]. Earth-Science Reviews, 2001, 54, 12(1/2/3): 231-260.

LUTENEGGER A J. Stability of loess in light of the inactive particle theory[J]. Nature, 1981, 291(5813): 291-360.

刘祖典, 张伯平. 关于黄土和黄土状上湿陷性评价问题[J]. 岩土工程学报, 1980(4): 23-33.

LIU Z D, ZHANG B P.Regarding the issues of loess and the evaluation of loess-like collapsibility[J].ChineseJournal of Geotechnical Engineering, 1980(4): 23-33.

PENG J B, FAN Z J, WU D, et al. Heavy rainfall triggered loess-mudstone landslide and subsequent debris flow in Tianshui, China[J]. Engineering Geology, 2015, 186: 79-90.

黄雪峰, 张广平, 姚志华, 等. 大厚度自重湿陷性黄土湿陷变形特性水分入渗规律及地基处理方法研究[J]. 岩土力学, 2011, 32(S2): 100-108.

HUANG X F, ZHANG G P, YAO Z H.Research on deformation, permeability regularity and foundation treatment method of dead-weight collapse loess with heavy section[J].Rock and Soil Mechanics, 2011, 32(S2): 100-108.

WANG L Q, SHAO S J, SHE F T. A new method for evaluating loess collapsibility and its application[J]. Engineering Geology, 2020, 264: 105376.

邢义川, 金松丽, 赵卫全, 等.基于离心模型试验的黄土湿陷试验新方法研究[J].岩土工程学报, 2017, 39(3):389-398.

XING Y C, JIN S L, ZHAO W Q, et al. New experimental method for loess collapsibility using centrifugal model tests[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(3): 389-398.

米文静, 张爱军, 刘争宏, 等. 黄土自重湿陷变形的多地层离心模型试验方法[J]. 岩土工程学报, 2020, 42(4): 678-687.

MI W J, ZHANG A J, LIU Z H.Multi-stratigraphic centrifugal model test method for determination of self-weight collapsible deformation of loess [J].Chinese Journal of Geotechnical Engineering, 2020, 42(4): 678-687.

邵生俊, 李骏, 李国良, 等. 大厚度自重湿陷黄土湿陷变形评价方法的研究[J]. 岩土工程学报, 2015, 37(6): 965-978.

SHAO S J, LI J, LI G L. Evaluation method for self-weight collapsible deformation of large thickness loess foundation [J].Chinese Journal of Geotechnical Engineering, 2015, 37(6): 965-978.

HELLER F, TUNGSHENG L. Magnetism of Chinese loess deposits[J]. Geophysical Journal International, 1984, 77(1): 125-141.

雷祥义. 黄土高原南部晚更新世黄土地层划分、显微结构及力学性质特征[J]. 第四纪研究, 1992, 12(2): 128-135, 194.

LEI X Y. Microstructure and mechanical properties of late pleistocene loess in the southern part of the loess plateau.[J]. Quaternary Research, 1992, 12(2): 128-135, 194.

PENG X L, FAN W, SUN C, et al. Physical and mechanical properties of interface transition zone between loess and paleosol[J]. Annales de Chimie Science des Matériaux, 2018, 42(4): 521-531.

张奇莹, 徐盼盼, 钱会. 泾阳原状黄土-古土壤序列抗剪强度各向异性及其机制研究[J].岩石力学与工程学报, 2019, 38(11): 2365-2376.

ZHANG Q Y, XU P P, QIAN H. Study on shear strength anisotropy of undisturbed loess-paleosol sequence in Jing-yang county[J].Chinese Journal of Rock Mechanics and Engineering, 2019, 38: 2365-2376.

李大展, 何颐华, 隋国秀. Q2黄土大面积浸水试验研究[J]. 岩土工程学报, 1993, 15(2): 1-11.

LI D Z, HE Y H, SUI G X. Q2 Study and test on immersion of Q2 loess in large area[J]. Chinese Journal of Geotechnical Engineering, 1993, 15(2): 1-11.

赵金刚, 吕远强, 晁军, 等. 典型黄土-古土壤系列浸水渗透及湿陷变形规律[J]. 煤田地质与勘探, 2020, 48(3): 152-159, 168.

ZHAO J G, LYU Y Q, ZHAO J, et al.The law of soaking infiltration and collapse deformation in typicalloess-paleosol series [J]. Coal Geology & Exploration, 2020, 48(3): 152-159, 168.

张宗祜. 我国黄土高原区域地质地貌特征及现代侵蚀作用[J].地质学报, 1981, 55(4): 308-320, 326.

ZHANG Z G, Regional geological and morphological characteristics and development of soilerosion in theloess plateau, China[J].Acta Geologica Sinica, 1981, 55(4): 308-320, 326.

程方方, 张吉宏, 董忠级. 某自重湿陷性黄土场地试坑浸水试验研究[J].勘察科学技术, 2016(1): 40-43.

CHENG F F, ZHANG J H, DONG Z J. Study on immersiontest in test pit of a self weight collapse loess site.[J].Exploration Science and Technology 2016(1): 40-43.

丁文士. 现场实测黄土自重湿陷量与室内试验湿陷量的相关分析[J].工程勘察, 1981, 9(4): 19-20.

DENG W S. Correlation analysis between the field measured collapsibility of loess and the laboratory test collapsibility[J].Engineering Site Investigation, 1981, 9(4): 19-20.

黄雪峰, 陈正汉, 哈双, 等. 大厚度自重湿陷性黄土场地湿陷变形特征的大型现场浸水试验研究[J].岩土工程学报, 2006, 28(3): 382-389.

HUANG X F, CHEN Z H, HA S.Large area field immersion tests on characteristics of deformation of self weight collapse loess under overburden pressure [J].Chinese Journal of Geotechnical Engineering, 2006, 28(3): 382-389.

吕玉芳, 孙伟, 曹郁文, 等. 自重湿陷性黄土层预浸水处理的现场试验与设计[J].水利与建筑工程学报, 1991(2): 17-25.

LYU Y F, SUN W, CAO Y W.Field test and design of pre-immersion treatment of self-weight collapsible loess[J].Journal of Water Resources and Architectural Engineering, 1991(2): 17-25.

罗晓锋, 王艳艳, 崔光辉. 大厚度湿陷性黄土路基浸水试验与沉降变形研究[J].兰州交通大学学报, 2014, 33(1): 124-130.

LUO X F, WANG Y Y, CUI G H.Study on immersion test and settlement deformation oflarge thickness collapsible loess subgrade[J].Journal of Lanzhou Jiaotong University, 2014, 33(1): 124-130.

罗宇生. 湿陷性黄土地基评价[J].岩土工程学报, 1998, 20(4): 90-94.

LUO Y S. Wetland loess ground foundation evaluation [J]. Chinese Journal of Geotechnical Engineering, 1998, 20(4): 90-94.

苏忍, 张恒睿, 张稳军, 等. 兰州地铁大厚度湿陷性黄土地层的现场浸水试验研究[J].土木工程学报, 2020, 53(S1): 186-193.

SU R, ZHANG H R, ZHANG W J. Immersion tests on self-weight collapsible loess site with large depth of Lanzhou metro line[J].China Civil Engineering Journal, 2020, 53(S1): 186-193.

王治军, 潘俊义, 马闫, 等. 董志塬大厚度自重湿陷性黄土场地浸水试验研究[J].水文地质工程地质, 2016, 43(2): 75-82.

WANG Z J, PAN J Y, MA Y. Immersion test on the self-weight collapsible loess in the Dongzhiyuan Area. [J].Hydrogeology & Engineering Geology, 2016, 43(2): 75-82.

姚志华, 黄雪峰, 陈正汉, 等. 兰州地区大厚度自重湿陷性黄土场地浸水试验综合观测研究[J].岩土工程学报, 2012, 34(1): 65-74.

YAO Z H, HUANG X F, CHEN Z H. Comprehensive soaking tests on self-weight collapse loess with heavy section in Lanzhou Region.[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(1): 65-74.

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