Study on erosion resistance of geocell reinforced slope
HAN Yukun1，2，LU Zheng1，3，YAO Hailin1，3，LIU Bin1，FAN Yongfeng4，LU Qiang4，ZHAO Deqiang4
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy
of Sciences，Wuhan，Hubei 430071，China；2. University of Chinese Academy of Sciences，Beijing 100049，China；3. Hubei Key Laboratory of Environmental Geotechnology，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，
Hubei 430071，China；4. Henan Xinrong Expressway Construction Co.，Ltd.，Luoyang，Henan 471000，China)
Abstract：The use of geocell on slope to resist erosion is a green，economical and efficient protection method. Aiming at the problems of quantitative evaluation and engineering application of geocell reinforced slope，an analysis model of slope erosion under rainfall condition is established，and compared with existing geocell reinforced slope erosion test. Considering the interaction between the geocell and the slope soil，the study focuses on three working conditions：bare slope，laying only the geocell and planting grass in the geocell，and the erosion prevention mechanism of geocell reinforced slope is revealed. The effects of rainfall intensity，rainfall duration，slope gradient，slope length，geocell size and grass planting conditions on runoff and soil loss of geocell reinforced slope are comprehensively studied，and the parameter sensitivity analysis is carried out based on the anti-scouring effect of geocell reinforced slope. The research results show that the geocell can reduce the amount of soil loss by 20%–40%，and can effectively play a role in preventing the slope erosion. After combining with the function of plants，the amount of soil loss can be reduced by more than 90%. Among the parameters，rainfall conditions and geocell size have a significant impact on the anti-scouring effect of the slope，while the slope parameters have a relatively small impact. The study can provide reference for the optimization design of slope reinforced by geocell.
[1] SATYAL S R，LESHCHINSKY B，HAN J，et al. Use of cellular confinement for improved railway performance on soft subgrades[J]. Geotextiles and Geomembranes，2018，46(2)：190–205.
[2] YANG X，HAN J，LESHCHINSKY D，et al. A three-dimensional mechanistic-empirical model for geocell-reinforced unpaved roads[J]. Acta Geotechnica，2013，8(2)：201–213.
[3] 郑 勇. 旧路拓宽工程新老路基差异沉降分析及工程应用[硕士学位论文][D]. 长沙：湖南大学，2018.(ZHENG Yong. Analysis and engineering application of differential settlement between old and new roadbed widening projects[M. S. Thesis][D]. Changsha：Hunan University，2018.(in Chinese))
[4] HEGDE A，SITHARAM T G. Experimental and numerical studies on protection of buried pipelines and underground utilities using geocells[J]. Geotextiles and Geomembranes，2015，43(5)：372–381.
[5] MEHDIPOUR I，GHAZAVI M，MOAYED R Z. Numerical study on stability analysis of geocell reinforced slopes by considering the bending effect[J]. Geotextiles and Geomembranes，2013，37(4)：23–34.
[6] 晏长根，杨晓华，谢永利，等. 土工格室对黄土路堤边坡抗冲刷的试验研究[J]. 岩土力学，2005，26(8)：1 342–1 344.(YAN Changgen，YANG Xiaohua，XIE Yongli，et al. Experimental research on anti-eroding effect of geocells in loess embankment[J]. Rock and Soil Mechanics，2005，26(8)：1 342–1 344.(in Chinese))
[7] 张光明. 垫邻高速公路破碎岩体高边坡生态防护技术研究[硕士学位论文][D]. 西安：长安大学，2010.(ZHANG Guangming. Study on the technology of ecological protection in broken rockmass high slope of Dianjiang to Linshui freeway[M. S. Thesis][D]. Xi'an：Chang'an University，2010.(in Chinese))
[8] 王 勤. 丽水山区公路边坡生态防护技术及其分析[硕士学位论文][D]. 杭州：浙江大学，2011.(WANG Qin. Ecological protection technology of road side slope in Lishui Mountainous area and its analysis[M. S. Thesis][D]. Hangzhou：Zhejiang University，2011.(in Chinese))
[9] 曾龙辉. 土工格室护岸冲刷试验及其在小河流中的应用[硕士学位论文][D]. 南昌：南昌工程学院，2017.(ZENG Longhui. Geocell revetment scouring test and its application in the small rivers[M. S. Thesis][D]. Nanchang：Nanchang Institute of Technology，2017.(in Chinese))
[10] 李凌姜. 黄土公路边坡柔性防护技术试验研究[硕士学位论文][D]. 西安：长安大学，2009.(LI Lingjiang. Loess Highway slope Experimental study on flexible protection technology[M. S. Thesis][D]. Xi'an：Chang?an University，2009.(in Chinese))
[11] ZHANG C，WU W，CHEN R J. Research on anti-erosion properties of pebbly clay slope in airport[J]. Advanced Materials Research，2011，356–360：2 502–2 505.
[12] 王广月，王杏花，魏金祥. 土工格室坡面侵蚀特性[J]. 应用基础与工程科学学报，2013，21(2)：249–256.(WANG Guangyue，WANG Xinghua，WEI Jinxiang. Erosion characteristics of geocell slope[J]. Journal of Basic Science and Engineering，2013，21(2)：249–256.(in Chinese))
[13] 杨晓华，王文生. 土工格室生态护坡在黄土地区公路边坡防护中的应用[J]. 公路，2004，49(8)：179–182.(YANG Xiaohua，WANG Wensheng. Application of geocell ecological slope protection in highway slope protection in loess area[J]. Highway，2004，49(8)：179–182.(in Chinese))
[14] 王广月，孙秀玲，魏金祥. 土工格室防护边坡抗冲刷规律试验研究[J]. 水土保持通报，2013，33(5)：69–72.(WANG Guangyue，SUN Xiuling，WEI Jinxiang. Experimental study of anti-erosion pattern on sideslope with geocell protection[J]. Bulletin of Soil and Water Conservation，2013，33(5)：69–72.(in Chinese))
[15] 张季如，朱瑞赓，程序桥. 土工格室用于岩石边坡植被侵蚀防护的稳定性分析[J]. 岩土力学，2003，24(3)：359–362.(ZHANG Jiru，ZHU Ruigeng，CHEN Xuqiao. Stability analysis of geocells with vegetation used for controlling erosion of rocky slopes[J]. Rock and Soil Mechanics，2003，24(3)：359–362.(in Chinese))
[16] 任敏松. 基于ABAQUS的土工格室生态边坡稳定性数值模拟研究[硕士学位论文][D]. 济南：山东大学，2015.(REN Minsong. Large room ecological slope stability based on ABAQUS numerical simulation research[M. S. Thesis][D]. Jinan：Shandong University，2015.(in Chinese))
[17] 王广月，韩 燕，王杏花. 降雨条件下土工格室柔性护坡的稳定性分析[J]. 岩土力学，2012，33(10)：3 020–3 024.(WANG Guangyue，HAN Yan，WANG Xinghua. Stability analysis of geocell flexible slope protection in rainfall[J]. Rock and Soil Mechanics，2012，33(10)： 3 020–3 024.(in Chinese))
[18] RAJAGOPAL K，KRISHNASWAMY NR，LATHA G M. Behaviour of sand confined with single and multiple geocells[J]. Geotextiles and Geomembranes，1999，17(3)：171–184.
[19] ZHUANG Y，XIAO H L. Combination of porous ecological concrete and geocell in riverbank protection[C]// The International Congress on Environmental Geotechnics. [S. l.]：Springer，2019：280–287.
[20] ENLIANG W，QIANG F U，XINGCHAO L. Application of geocell in cold regions canal slope protection[C]// International Conference on Information Engineering for Mechanics and Materials. [S. l.]：Atlantis Press，2015：765–771.
[21] 张宗媛，李春晓，梁志坚，等. 土工格室在某水库贫瘠土边坡防护中的应用[J]. 人民珠江，2005，(2)：35–36.(ZHANG Zongyuan，LI Chunxiao，LIANG Zhijian，et al. Application of geocell in protection of barren soil slope in a reservoir[J]. Pearl River，2005，(2)：35–36.(in Chinese))
[22] GUO J，HAN J，D.SCHROCK STEVEN，et al. Field evaluation of vegetation growth in geocell-reinforced unpaved shoulders[J]. Geotextiles and Geomembranes，2015，43(5)：403–411.
[23] GREEN W H，AMPT G A. Studies on soil physics I. The flow of air and water through soils[J]. International Journal of Nonlinear Sciences and Numerical Simulation，2015，4(7–8)：1–24.
[24] STONE J J，LANE L J，SHIRLEY E D. Infiltration and runoff simulation on a plane[J]. Transactions of the ASAE，1992，35(1)：161–170.
[25] NEARING M A，FOSTER G R，LANE L J，et al. A process-based soil erosion model for USDA-water erosion prediction project technology[J]. Transactions of the ASAE，1989，32(5)：1 587–1 593.
[26] VAN LIEW M，SAXTON K. Slope steepness and incorporated residue effects[J]. Transactions of the ASAE，1983，26(6)：1 738–1 743.
[27] 郑子成. 坡面水蚀过程中地表糙度的作用及变化特征研究[博士学位论文][D]. 咸阳：西北农林科技大学，2007.(ZHENG Zicheng. Study on the effect and change characteristic of soil surface roughness during the course of water erosion[Ph. D. Thesis][D]. Xianyang：Northwest A&F University，2007.(in Chinese))
[28] ELLIOT W J. Compendium of soil erodibility data from wepp cropland soil field erodibility experiments 1987 and 88[R]. West Lafayette，Indiana，USA：US Department of Agricultural Research Service，1989.
[29] 幸定武. 基于WEPP模型的降雨径流调控数值模拟研究[硕士学位论文][D]. 咸阳：西北农林科技大学，2008.(XING Dingwu. Study on numerical simulation of regulation of rainfall runoff based on WEPP model[M. S. Thesis][D]. Xianyang：Northwest A&F University，2008.(in Chinese))
[30] 杨 振. 黑龙江公路路堑边坡水土保持措施效果研究[硕士学位论文][D]. 哈尔滨：东北林业大学，2008.(YANG Zhen. Effect of soil and water conservation measures in Heilongjiang expressway cutting slopes[M. S. Thesis][D]. Harbin：Northeast Forestry University，2008.(in Chinese))
[31] 蒋建良，王华俊，卿翠贵，等. 采用土工格室的公路岩质陡坡绿化研究[J]. 公路，2019，64(4)：305–308.(JIANG Jianliang，WANG Huajun，QING Cuigui，et al. Study on afforestation of highway rocky steep slope using geocell[J]. Highway，2019，64(4)：305–308.(in Chinese))
2021, Vol. 40 
