Impermeability characteristics of junctional zone between compacted broadly graded clayey soil and hard surface

DENG Gang; ZHANG Yin-qi; ZHANG Yan-yi; ZHAN Zheng-gang; YANG Jia-xiu; LU Ji; CAO Xue-xing

doi:10.11779/CJGE202109007

Volume 43 Issue 9

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2021 > 43(9): 1631-1639. > DOI: 10.11779/CJGE202109007

DENG Gang, ZHANG Yin-qi, ZHANG Yan-yi, ZHAN Zheng-gang, YANG Jia-xiu, LU Ji, CAO Xue-xing. Impermeability characteristics of junctional zone between compacted broadly graded clayey soil and hard surface[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(9): 1631-1639. DOI: 10.11779/CJGE202109007

Citation:

PDF (1427 KB)

Impermeability characteristics of junctional zone between compacted broadly graded clayey soil and hard surface

1.
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
2.
Key Laboratory of Construction and Safety of Hydraulic Engineering of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
3.
PowerChina Guiyang Engineering Corporation Limited, Guiyang 550081, China
4.
Huaneng Lancang River Hydropower Inc., Kunming 650214, China

More Information

Received Date: March 14, 2021
Available Online: December 02, 2022

Graphical Abstract

Abstract

Abstract

Large-scale and medium-scale test equipments for impermeability characteristics of junctional zone between soil and hard surface are developed. The mutually orthogonal compressive stress, shear deformation and hydraulic gradient of the junctional zone between the soil and the rigid surface are controllable independently. The maximum shear deformation is greater than 1 m. The experimental studies on a compacted natural broadly graded clayey soil are carried out. The variation law of the permeability coefficient of the samples is discovered, that the permeability coefficient decreases gradually and then becomes stable after the sudden increase along with the start of the shear deformation. The history of shear deformation may weaken the phenomenon of the sudden increase of the permeability coefficient after the start of shear deformation. The permeability coefficient of soil samples with higher initial density, higher stress and larger external size is lower. Based on the corresponding relationship between the ratio of water conductivity coefficient of the junctional zone to its initial value and the ratio of permeability coefficient of the sample to its initial value, the possible thickness of the junctional zone considered to be between 0.075 mm and 1.0 mm is analyzed when the peak value of permeability coefficient is achieved. A revised model for clay particle clusters with irregular shape is proposed. The continuous change mechanism of permeability during shear deformation can be explained by fabric adjustment. The conjecture of the thickness of the junctional zone is also supported.
- broadly graded clayey soil,
- junctional zone,
- shearing deformation,
- impermeability characteristic,
- fabric

FullText(HTML)

References (29)

References

[1]	邓刚, 丁勇, 张延亿, 等. 土质心墙土石坝沿革及体型和材料发展历程的回顾[J]. 中国水利水电科学研究院学报, 2021, 19(2): 1-13. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGSX202104006.htm DENG Gang, DING Yong, ZHANG Yan-yi, et al. Evolution of earth core embankment dams along with the development of configuration and material[J]. Journal of China Institute of Water Resources and Hydropower Research, 2021, 19(2): 1-13. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGSX202104006.htm
[2]	KJAERNSLI B, TORBLAA I. Compaction of moraine in three feet layers[C]//Proceeding of the 7th International Congress on Large Dams, 1961, Rome.
[3]	ASAO I. The Miboro Dam[C]//Proceeding of the 8th International Congress on Large Dams, 1964, Edinbergh.
[4]	COOKE J B. Design Methods of Construction and Performance of High Rockfill Dams (above or about 80 m)[C]//Proceeding of the 8th International Congress on Large Dams, 1964, Edinburgh.
[5]	ALBERRO J, MORENO E. Interaction phenomena in the Chicoasén dam: Construction and first filling[C]//Proceeding of the 14th International Congress on Large Dams, 1982, Rio De Janeiro.
[6]	邓刚, 韩巍巍, 温彦锋, 等. Hyttejuvet坝突然渗漏事故的回顾和心墙堆石坝水力劈裂的反思[C]//土石坝技术2012年论文集, 2012, 北京. DENG Gang, HAN Wei-wei, WEN Yan-feng, et al. A review of the sudden leakage of hyttejuvet dam and a reflection on the hydraulic fracturing of the earth core rockfill dams[C]//Proceeding of the Symposium on Technology of Earth-Rockfill Dam Rockfill Dams, 2012, Beijing. (in Chinese)
[7]	邓刚, 皇甫泽华, 武颖利, 等. 土质心墙土石坝变形协调控制发展与展望[J]. 水力发电学报, 2020, 39(5): 1-16. DENG Gang, HUANGFU Ze-hua, WU Yin-li, et al. Development and prospect of deformation compatibility control of earth core embankment dams[J]. Journal of Hydroelectric Engineering, 2020, 39(5): 1-16. (in Chinese)
[8]	邓刚, 陈辉, 张茵琪, 等. 基于坝壳湿化过程数值模拟的心墙坝初蓄水力劈裂机理研究[J]. 中国水利水电科学研究院学报, 2021, 19(1): 90-98. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGSX202101012.htm DENG Gang, CHEN Hui, ZHANG Yin-qi, et al. Study on mechanism of hydraulic fracture of earth core embankment dam during first filling based on the numerical simulation of wetting deformation development with time of coarse aggregate[J]. Journal of China Institute of Water Resources and Hydropower Research, 2021, 19(1): 90-98. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGSX202101012.htm
[9]	DEWHURST D N, CLENNELL M B, BROWN K M, et al. Fabric and hydraulic conductivity of sheared clays[J]. Géotechnique, 1996, 46(4): 761-768. doi: 10.1680/geot.1996.46.4.761
[10]	DEWHURST D N, BROWN K M, CLENNELL M B, et al. A comparison of the fabric and permeability anistrophy of consolidated and sheared silty clay[J]. Engineering Geology, 1996, 42(4): 253-267. doi: 10.1016/0013-7952(95)00089-5
[11]	ZHANG S Q, TERRY E T. The effect of fault slip on permeability and permeability anisotropy in quartz gouge[J]. Tectonophysics, 1998, 295: 41-52. doi: 10.1016/S0040-1951(98)00114-0
[12]	KIMURA S, KANEKO H, ITO T, et al. Investigation of fault permeability in sands with different mineral compositions (evaluation of gas hydrate reservoir)[J]. Energies, 2015, 8: 7202-7223. doi: 10.3390/en8077202
[13]	IMURA S, KANEKO H, NODA S, et al. Shear-induced permeability reduction and shear-zone development of sand under high vertical stress[J]. Engineering Geology, 2018, 238: 86-98. doi: 10.1016/j.enggeo.2018.02.018
[14]	WANG G, WEI X, ZOU T. A hollow cylinder radial-seepage apparatus for evaluating permeability of sheared compacted clay[J]. Geotechnical Testing Journal, 2019, 42(5): 1133-1149.
[15]	魏星, 邹婷, 王刚. 压-剪耦合条件下黏土渗透特性的试验研究.[J]. 岩石力学与工程学报, 2017, 36(增刊1): 3561-3568. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2017S1050.htm WEI Xing, ZOU Ting, WANG Gang. Experimental study on permeability of clay during coupled compression and shear[J]. Chinese Journal of Rock Mechanics and Geotechnical Engineering, 2017, 36(S1): 3561-3568. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2017S1050.htm
[16]	王刚, 游克勤, 魏星, 等. 压实黏土剪切带渗透特性试验研究[J]. 岩土工程学报, 2019, 41(8): 1530-1537. WANG Gang, YOU Ke-qin, WEI Xing, et al. Experimental study on permeability of shear bands in compacted clay[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(8): 1530-1537. (in Chinese)
[17]	雷红军, 卞锋, 于玉贞, 等. 黏土大剪切变形中的渗透特性试验研究[J]. 岩土力学, 2010, 31(4): 1130-1133. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201004025.htm LEI Hong-jun, BIAN Feng, YU Yu-zhen, et al. Experimental study of permeability of clayey soil during process of large shear deformation[J]. Rock and Soil Mechanics, 2010, 31(4): 1130-1133. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201004025.htm
[18]	LEI H J, WU Y K, YU Y Z, et al. Influence of shear on permeability of clayey soil[J]. International Journal of Geomechanics, 2016, 16(5): 04016010
[19]	LIU Q H, WU Y K, LI Q M, et al. Modified model for hydraulic conductivity of clayey soil under shear[J]. International Journal of Geomechanics, 2019, 19(11): 06019015.
[20]	王刚, 韦林邑, 魏星, 等. 压实黏土三轴压缩变形过程中的渗透性变化规律[J]. 岩土力学, 2020, 41(1): 32-38. WANG Gang, WEI Lin-yi, WEI Xing, et al. Permeability evolution of compacted clay during triaxial compression[J]. Rock and Soil Mechanics, 2020, 41(1): 32-38. (in Chinese)
[21]	雷红军, 刘中阁, 于玉贞, 等. 黏土-结构接触面大剪切变形后渗流特性试验研究[J]. 岩土力学, 2011, 32(4): 1040-1044. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201104013.htm LEI Hong-jun, LIU Zhong-ge, YU Yu-zhen, et al. Experimental study of seepage characteristics of clayey soil-structure interface under large shear deformation[J]. Rock and Soil Mechanics, 2011, 32(4): 1040-1044. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201104013.htm
[22]	LUO Y L, JIN X, LI X, et al. A new apparatus for evaluation of contact erosion at the soil-structure interface[J]. Geotechnical Testing Journal, 2013, 36(2): 256-263.
[23]	邓刚, 湛正刚, 张幸幸, 等. 一种旋转剪切式接触面抗渗特性试验装置：中国,201610305992.8[P]. 2019-01-25. DENG Gang, ZHAN Zheng-gang, ZHANG Xing-xing, et al. The invention discloses a rotary shear type test device for impermeability of contact surface: China, 201610305992.8[P]. 2019-01-25. (in Chinese)
[24]	邓刚, 湛正刚, 张茵琪, 等. 一种模拟接触面渗流耦合特性的试验装置及试验方法: CN111912760A[P]. 2020-11-10. DENG Gang, ZHAN Zheng-gang, ZHANG Yin-qi, et al. The invention relates to a test device and a test method for simulating the seepage coupling characteristics of contact surfaces: CN111912760A[P]. 2020-11-10. (in Chinese)
[25]	COLLINS K, MCGOWN A. The form and function of microfabric features in a variety of natural soils[J]. Géotechnique, 1974, 24(2): 223-254.
[26]	MITCHELL J K, SOGA K. Fundamental of soil behavior[M]. 3rd ed. New Jersey: John Wiley and Sons, 2005.
[27]	OLSEN H W. Hydraulic flow through saturated clay[C]//Proceedings of the Ninth National Conference on Clays and Clay Minerals, 1962, West Lafayette.
[28]	DELAGE P, LEFEBVRE G. Study of the structure of a sensitive Champlain clay and of its evolution during consolidation[J]. Canadian Geotechnical Journal, 1984, 21(1): 21-35.
[29]	MORGENSTERN N R, TCHALENKO J S. Microscopic structures in Kaolin subjected to direct shear[J]. Géotechnique, 1967, 17: 309-328.

[1]	LI Lihua, LI Zesheng, XIAO Henglin, QI Ziwei, YE Zhi, LI Yutao. Stability study on reinforced embankment under action of rise and fall of water levels[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S2): 1-5. DOI: 10.11779/CJGE2024S20032
[2]	HUANG Fu, JI Hengbo, WANG Ziqin, PAN Qiujing, LING Tonghua. Stability of slurry trench walls considering coupling effects of soil heterogeneity and pore water pressure[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(3): 539-548. DOI: 10.11779/CJGE20221401
[3]	CAI Hong, YAN Jun, WEI Ying-qi, ZHANG Shou-zhen, WU Shuai-feng, SUN Li-ming. Unsaturated infiltration characteristics and stability of fly ash dams under flood conditions[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(S2): 157-162. DOI: 10.11779/CJGE2020S2028
[4]	DENG Hua-feng, WANG Zhe, LI Jian-lin, JIANG Qiao, ZHANG Heng-bin. Effect of unloading rate and pore water pressure on mechanical properties of sandstone[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(11): 1976-1983. DOI: 10.11779/CJGE201711004
[5]	LI Zhuo, HE Yong-jun, SHENG Jin-bao, LI Hong-en, LI Zheng, YANG Yang. Landslide model for slope of reservoir bank under combined effects of rainfall and reservoir water level[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(3): 452-459. DOI: 10.11779/CJGE201703008
[6]	SHAO Shuai, YANG Chun-ming, SHAO Sheng-jun. Construction method for anchoring face rockfill dam and its stability[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(z2): 61-66. DOI: 10.11779/CJGE2016S2010
[7]	TANG Dong, QI Xiao-hui, JIANG Shui-hua, LI Dian-qing. Effect of different antecedent rainfalls and SWCCs on slope stability[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk1): 148-155. DOI: 10.11779/CJGE2015S1029
[8]	HAN Xue-feng, KWONG A K L, THAM L G, ZHAO Wei-Bing. Variation law of pore water pressure in soil improved by underwater vacuum preloading method[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(5): 658-662.
[9]	YIN Jianhua, CHEN Jian, LEE Chack fan. A rigid finite element method for upper bound limit analysis of soil slopes subjected to pore water pressure[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(3): 273-277.
[10]	Shen Ruifu, Wang Hongjin, Zhou Keji, Zhou Jingxing. Building-up Of Pore Water Pressure under Cyclic Rotation of Principal Stress and Evaluation of Stability of Seabed Deposit[J]. Chinese Journal of Geotechnical Engineering, 1994, 16(3): 70-78.