• 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引(EI)收录期刊
  • Scopus数据库收录期刊
DENG Ming-jiang, CAI Zheng-yin, ZHU Xun, ZHANG Chen. Failure mechanism and reinforcement measures of shallow slopes of expansive soils in Northern Xinjiang[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(S2): 50-55. DOI: 10.11779/CJGE2020S2009
Citation: DENG Ming-jiang, CAI Zheng-yin, ZHU Xun, ZHANG Chen. Failure mechanism and reinforcement measures of shallow slopes of expansive soils in Northern Xinjiang[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(S2): 50-55. DOI: 10.11779/CJGE2020S2009

Failure mechanism and reinforcement measures of shallow slopes of expansive soils in Northern Xinjiang

More Information
  • Received Date: August 06, 2020
  • Available Online: December 07, 2022
  • The stability of canal slopes of expansive soils is the premise of normal operation of water supply projects in Northern Xinjiang. Taking the water supply project in the high and cold region of Northern Xinjiang as an example, the canal slopes at expansive soils are destroyed obviously under the action of alternate wet and dry, freeze-thaw cycle, which is mainly manifested as the reduction of slope integrity caused by the cracking of shallow expansive soils and the deterioration of internal mechanical properties of the basic soils, which seriously affects the overall stability of the canal slopes of expansive soils. Based on the field measured data of the failure section of expansive soil canals, combined with centrifugal test results and interface theory in composite materials, the shallow failure mechanism and reinforcement measures of canal slopes of expansive soil are studied. The results show that the cracking of shallow expansive soils is the decisive factor causing the failure of shallow canals, and the specific failure is different from that of the traditional traction landslides, which mainly exhibits the failure of spalling of shallow expansive soils along the canal slopes. In addition, the continuous water loss process of expansive soils results in the conversion of strong bond contact between soil particles to weak bond contact, and causes the propagation path deflection of expansive soil cracks after they develop to a certain depth, and the cracks penetrate into the shallow soils, finally causing shallow damage to the expansive soil slopes. On this basis, it is suggested that the protective measures should be taken to reduce the cracking of shallow soils after the slope repair, and the anti-sliding retaining reinforcement measures should also be taken in time when the tensile crack appears at the back edge of the canal slopes.
  • [1]
    邓铭江. 新疆水资源及可持续利用[M]. 北京: 中国水利水电出版社, 2005.

    DENG Ming-jiang. Water Resource of Xinjiang and Sustainable Use[M]. Beijing: China Water Resources and Hydropower Press, 2005. (in Chinese)
    [2]
    邓铭江. 中国西北“水三线”空间格局与水资源配置方略[J]. 地理学报, 2018, 73(7): 1189-1203. https://www.cnki.com.cn/Article/CJFDTOTAL-DLXB201807002.htm

    DENG Ming-jiang. “Three Water Lines” strategy: its spatial patterns and effects on water resources allocation in northwest China[J]. Acta Geographica Sinica, 2018, 73(7): 1189-1203. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DLXB201807002.htm
    [3]
    蔡正银, 黄英豪. 咸寒区渠道冻害评估与处治技术[M]. 北京: 科学出版社, 2015.

    CAI Zheng-yin, HUANG Ying-hao. Evaluation and Treatment Technology of Frost Damage in Canalsin Saline and Cold Regions[M]. Beijing: Science Press, 2015 (in Chinese)
    [4]
    刘静德, 李青云, 龚壁卫. 南水北调中线膨胀岩膨胀特性研究[J]. 岩土工程学报, 2011, 33(5): 826-830. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201105030.htm

    LIU Jing-de, LI Qing-yun, GONG Bi-wei. Swelling properties of expansive rock in middle route project of South-to-North Water Diversion[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(5): 826-830. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201105030.htm
    [5]
    张晨, 蔡正银, 黄英豪, 等. 输水渠道冻胀离心模拟试验[J]. 岩土工程学报, 2016, 38(1): 109-117. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201601013.htm

    ZHANG Chen, CAI Zheng-yin, HUANG Ying-hao, et al. Centrifuge modelling of frost-heave of canals[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(1): 109-116. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201601013.htm
    [6]
    陈生水, 郑澄锋, 王国利. 膨胀土边坡长期强度变形特性和稳定性研究[J]. 岩土工程学报, 2007, 29(6): 795-799.

    CHEN Sheng-shui, ZHENG Cheng-feng, WANG Guo-li. Researches on long-term strength deformation characteristics and stability of expansive soil slopes[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(6): 795-799. (in Chinese)
    [7]
    MORGENSTERN N R, PRICE V E. The analysis of the stability of general slip surfaces[J]. Géotechnique, 1965, 15(1): 79-93. doi: 10.1680/geot.1965.15.1.79
    [8]
    程展林, 龚壁卫. 膨胀土边坡[M]. 北京: 科学出版社, 2015.

    CHENG Zhan-lin, GONG Bi-wei. Expansive Soil Slope[M]. Beijing: Science Press, 2015. (in Chinese)
    [9]
    包承纲. 非饱和土的性状及膨胀土边坡稳定问题[J]. 岩土工程学报, 2004, 26(1): 1-15. doi: 10.3321/j.issn:1000-4548.2004.01.001

    BAO Cheng-gang. Behavior of unsaturated soil and stability of expansive soil slope[J]. Chinese Journal of Geotechnical Engineering, 2004, 26(1): 1-15. (in Chinese) doi: 10.3321/j.issn:1000-4548.2004.01.001
    [10]
    朱洵, 蔡正银, 黄英豪, 等. 湿干冻融耦合循环及干密度对膨胀土力学特性影响的试验研究[J]. 水利学报, 2020, 51(3): 286-294.

    ZHU Xun, CAI Zheng-yin, HUANG Ying-hao, et al. Research on mechanical properties of expansive soils under cyclic action of coupling wetting-drying and freeze-thaw and density[J]. Journal of Hydraulic Engineering, 2020, 51(3): 286-294. (in Chinese)
    [11]
    朱洵, 蔡正银, 黄英豪, 等. 湿干冻融耦合循环作用下膨胀土力学特性及损伤演化规律研究[J]. 岩石力学与工程学报, 2019, 38(6): 1233-1241. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201906014.htm

    ZHU Xun, CAI Zheng-yin, HUANG Ying-hao, et al. Research on mechanical properties and damage evolution law of expensive soils under the cyclic action of coupling wetting-drying and freeze-thaw[J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38(6): 1233-1241. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201906014.htm
    [12]
    蔡正银, 陈皓, 黄英豪, 等. 考虑干湿循环作用的膨胀土渠道边坡破坏机理研究[J]. 岩土工程学报, 2019, 41(11): 1977-1982.

    CAI Zheng-yin, CHEN Hao, HUANG Ying-hao, et al. Failure mechanism of canal slopes of expansive soils considering action of wetting-drying cycles[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(11): 1977-1982. (in Chinese)
    [13]
    蔡正银, 朱洵, 黄英豪, 等. 湿干冻融耦合循环作用下膨胀土裂隙演化规律[J]. 岩土工程学报, 2019, 41(8): 1381-1389.

    CAI Zheng-yin, ZHU Xun, HUANG Ying-hao, et al. Evolution rules of fissures in expansive soils under cyclic action of coupling wetting-drying and freeze-thaw[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(8): 1381-1389. (in Chinese)
    [14]
    蔡正银, 朱洵, 黄英豪, 等. 冻融过程对膨胀土裂隙演化特征的影响[J]. 岩土力学, 2019, 40(12): 4555-4563.

    CAI Zheng-yin, ZHU Xun, HUANG Ying-hao, et al. Influences of freeze-thaw process on evolution characteristics of fissures in expensive soil[J]. Rock and Soil Mechanics, 2019, 40(12): 1-9. (in Chinese)
    [15]
    KHAN M S, HOSSAIN S, AHMED A, et al. Investigation of a shallow slope failure on expansive clay in Texas[J]. Engineering Geology, 2017, 219: 118-129.
    [16]
    DONKOR P, OBONYO E. Compressed soil blocks: Influence of fibers on flexural properties and failure mechanism[J]. Construction and Building Materials, 2016, 121: 25-33.
    [17]
    唐朝生, 施斌, 崔玉军. 土体干缩裂隙的形成发育过程及机理[J]. 岩土工程学报, 2018, 40(8): 1415-1423.

    TANG Chao-sheng, SHI Bin, CUI Yu-jum. Behaviors and mechanisms of desiccation cracking of soils[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(8): 1415-1423. (in Chinese)
    [18]
    柴波, 殷坤龙, 简文星, 等. 红层水岩作用特征及库岸失稳过程分析[J]. 中南大学学报(自然科学版), 2009, 40(4): 1092-1098. https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGD200904043.htm

    CHAI Bo, YIN Kun-long, JIAN Wen-xing, et al. Analysis of water-rock interaction characteristics and bank slope failure process of red-bed[J]. Journal of Central South University (Science and Technology), 2009, 40(4): 1092-1098. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGD200904043.htm
    [19]
    李黎, 曹明莉. 混杂纤维增强水泥基复合材料弯曲韧性与纤维增强指数的定量关系[J]. 复合材料学报, 2018, 35(5): 1349-1353. https://www.cnki.com.cn/Article/CJFDTOTAL-FUHE201805037.htm

    LI Li, CAO Ming-li. Quantitative relationship between flexural toughness and fiber reinforcing index of hybrid fiber reinforced cementitious composites[J]. Acta Materiae Compositae Sinica, 2018, 35(5): 1349-1353. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-FUHE201805037.htm
  • Related Articles

    [1]WANG Wei, CHEN Chaowei, LIU Shifan, CAO Yajun, DUAN Xuelei, NIE Wenjun. Experimental study on permeability and effective porosity of anisotropic layered phyllite[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(2): 445-451. DOI: 10.11779/CJGE20230184
    [2]Study of the tunnel face failure mechanism and soil arching effect in auxiliary air balanced shield using the three-dimensional Material Point Method[J]. Chinese Journal of Geotechnical Engineering. DOI: 10.11779/CJGE20240222
    [3]CAO Xue-shan, YUAN Jun-ping, DING Guo-quan. Numerical simulation of air resistance of French drains beneath geomembrane in field vacuuming tests[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(10): 1780-1788. DOI: 10.11779/CJGE202210003
    [4]ZHANG Zhao, LIU Feng-yin, LI Rong-jian, CHAI Jun-rui, GU Yu. New approach to predict relative air permeability based on water retention curve for unsaturated soils[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(z2): 280-285. DOI: 10.11779/CJGE2016S2046
    [5]LI Wang-lin, LIU Zhan-lei, MENG Xiang-tao, XU Fang. Experimental study on air expansion deformation of geomembrane under ring-restrained conditions[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(6): 1147-1151. DOI: 10.11779/CJGE201606023
    [6]YU Hai-hao, WEI Chang-fu, YAN Rong-tao, FU Xin-hui, MA Tian-tian. Effects of pore solution concentrations on shear strength of clay[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(3): 564-569. DOI: 10.11779/CJGE201503023
    [7]ZHOU Shu-wei, XIA Cai-chu, ZHANG Ping-yang, ZHOU Yu. Analytical approach for stress induced by internal pressure and temperature of underground compressed air energy storage in a circular lined rock cavern[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(11): 2025-2035. DOI: 10.11779/CJGE201411008
    [8]CHU Xihua. Evolution of porosity and pore water pressure of granular materials based on continuum model[J]. Chinese Journal of Geotechnical Engineering, 2009, 31(8): 1255-1257.
    [9]SHEN Zhujiang. Exploitation of practical use of unsaturated soil mechanics[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(2): 256-259.
    [10]Shen Zhujiang. Earth pressure of clay based on effective consolidation stress theory[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(3): 353-356.

Catalog

    Article views (248) PDF downloads (93) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return