锚固植被加强系统对新开挖膨胀土边坡大气影响深度的作用

唐林强; 陈君婷; 许英姿

doi:10.13961/j.cnki.stbctb.2022.04.019

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锚固植被加强系统对新开挖膨胀土边坡大气影响深度的作用

试验研究

- 锚固植被加强系统对新开挖膨胀土边坡大气影响深度的作用
- Effects on Atmospheric Influence Depth for an Anchored Vegetation Reinforcement System to Protect Newly Excavated Expansive Soil Slopes
- 水土保持通报 2022年42卷第4期页码：145-152
- 作者机构：
  
  1. 广西交通职业技术学院路桥工程学院,广西,南宁,530004
  2. 广西大学土木建筑工程学院,广西,南宁,530004
- 作者简介：
- 基金信息：
  
  广西职业教育第二批专业发展研究基地项目“广西职业教育道路桥梁工程技术专业群发展研究基地”（桂教职成[2018]65号）
- DOI：10.13961/j.cnki.stbctb.2022.04.019
  中图分类号： TU443
- 纸质出版：2022
- 稿件说明：
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唐林强, 陈君婷, 许英姿. 锚固植被加强系统对新开挖膨胀土边坡大气影响深度的作用[J]. 水土保持通报, 2022,42(4):145-152.

Tang Linqiang, Chen Junting, Xu Yingzi. Effects on Atmospheric Influence Depth for an Anchored Vegetation Reinforcement System to Protect Newly Excavated Expansive Soil Slopes[J]. Bulletin of Soiland Water Conservation, 2022, 42(4): 145-152.
唐林强, 陈君婷, 许英姿. 锚固植被加强系统对新开挖膨胀土边坡大气影响深度的作用[J]. 水土保持通报, 2022,42(4):145-152. DOI： 10.13961/j.cnki.stbctb.2022.04.019.

Tang Linqiang, Chen Junting, Xu Yingzi. Effects on Atmospheric Influence Depth for an Anchored Vegetation Reinforcement System to Protect Newly Excavated Expansive Soil Slopes[J]. Bulletin of Soiland Water Conservation, 2022, 42(4): 145-152. DOI： 10.13961/j.cnki.stbctb.2022.04.019.

摘要

[目的] 探索锚固加强植被系统(ARVS系统)对新开挖膨胀土边坡大气影响深度的影响，为该系统防护新开挖膨胀土边坡的应用提供参考依据。[方法] 以南宁市膨胀土边坡为研究对象，进行新开挖的裸露边坡、植草边坡、ARVS系统防护边坡的现场试验，监测边坡的土体含水率、土体温度、锚杆轴力，研究大气作用下ARVS系统对新开挖膨胀土边坡的大气影响的深度。[结果] 裸露边坡的大气影响深度发展最快，短时间内就能发展到了2.4 m左右，ARVS系统防护边坡的发展最慢，多次降雨后，大气影响深度小于1.8 m；ARVS系统能约束膨胀作用，限制胀缩裂隙的发育，再加上植被作用，减缓大气影响深度向内部发展的速度；随着大气影响深度向土体深部发展，中性点向深处移动，坡面的植被与高性能植被保护垫(HPTRM)能使限制这种移动，保证ARVS系统约束膨胀作用的能力。[结论] ARVS系统的植被，HPTRM和锚杆3者相互作用，通过约束膨胀作用来限制新开挖膨胀土边坡大气影响深度的发展。

Abstract

[Objective] The data that could provide a reference basis for the application of an anchor-reinforced vegetation system (ARVS) were obtained to protect newly excavated slopes with expansive soil.[Methods] Field tests were conducted on a newly excavated bare slope

vegetated slope

and ARVS-protected slope of expansive soil in Nanning City. Soil moisture content

soil temperature

and anchor shaft force of the slope were monitored to study the depth of atmospheric influence of ARVS on a newly excavated expansive soil slope under atmospheric action.[Results] The depth of atmospheric influence on the bare slope developed the fastest

developing to about 2.4 m in a short time. The depth of atmospheric influence on the ARVS-protected slope developed the slowest. The depth of atmospheric influence was less than 1.8 m after repeated rainfall events. ARVS restrained the expansive effect and limited the development of expansive and shrinking fissures

together with vegetation and high performance turf reinforcement mats (HPTRM)

ARVS slowed down the development of the depth of atmospheric influence to the interior. As the depth of atmospheric influence developed to the deep part of the soil body

the neutral point moved deeper.[Conclusion] The vegetation

HPTRM

and anchor rod of ARVS interacted with each other to limit the development of atmospheric influence depth on a newly excavated expansive soil slope by restraining the expansive effect.

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references

胡东旭,李贤,周超云,等.膨胀土干湿循环胀缩裂隙的定量分析[J].岩土力学,2018,39(S1):318-324.

范晓洁,杨茜,李栋.大气影响带对膨胀土边坡稳定的影响及对策[J].水利水电技术,2016,47(5):46-48.

王向阳,余学林,宋辉,等.埃塞俄比亚黑棉土路基换填深度及处置技术研究[J].公路,2017,62(3):7-12.

翟聚云,郝晓,马明江,等.大气影响下平顶山膨胀土地表蒸发研究[J].冰川冻土,2019,41(2):342-349.

赵平,徐正宣,唐林,等.埃塞俄比亚黑棉土胀缩特性及大气影响深度研究[J].铁道工程学报,2014,31(4):46-50.

赵艳林,曾召田,吕海波.大气作用下膨胀土地基的水分迁移与胀缩变形分析[J].防灾减灾工程学报,2011,31(6):659-665.

孔令伟,陈建斌,郭爱国,等.大气作用下膨胀土边坡的现场响应试验研究[J].岩土工程学报,2007, 29(7):1065-1073.

郑硕,黎凤林,杨超炜.特殊土边坡的植被防护工程及景观研究[J].公路工程,2020,45(5):234-238.

Likitlersuang S, Kounyou K, Prasetyaningtiyas G A. Performance of geosynthetic cementitious composite mat and vetiver on soil erosion control[J]. Journal of Mountain Science, 2020, 17(6):1410-1422.

Pan Yi, Chen Yongping, Zhang Tongxin, et al. Laboratory study on erosion of vegetated HPTRM system under high-speed open-channel flow[J]. Journal of Waterway Port Coastal and Ocean Engineering, 2017, 144(1):04017038.

Yuan Saiyu, Tang Hongwu, Li Lin, et al. Overtopping erosion and failure mechanism of earthen levee strengthened by vegetated HPTRM system[J]. Ocean Engineering, 2015, 96:139-148.

裴圣瑞.新型锚固加强植被系统加固南宁膨胀岩的试验研究[D].广西南宁:广西大学.2014.

康春艳.南宁膨胀岩边坡高性能植被保护垫系统冲刷试验研究[D].广西南宁:广西大学,2016.

鲜少华.锚固加强植被系统防护膨胀土边坡坡面效果的研究[D].广西南宁:广西大学.2016.

Mehrjardi G T, Behrad R, Tafreshi, S N M. Scale effect on the behavior of geocell-reinforced soil[J]. Geotextiles and Geomembranes, 2019,47(2):154-163.

侯兆霞.特殊土地基[M].北京:中国建筑工业出版社,2007.

肖衡林,张晋锋.三维土工网垫固土植草试验研究[J].公路,2005(4):163-166.

Ng C W W, Zhan L T, Bao C G, et al. Performance of anunsaturated expansive soil slope subjected to artificial rainfall infiltration[J]. Geotechnique, 2003, 53 (2):143-157.

Guo WenZhao, Chen ZhuoXin, Wang Wenlong, et al. Telling a different story:The promote role of vegetation in the initiation of shallow landslides during rainfall on the Chinese Loess Plateau[J]. Geomorphology. 2020, 350:106879.

Xie Canrong, Ni Pengpeng, Xu Meijuan, et al. Combined measure of geometry optimization and vegetation for expansive soil slopes[J]. Computers and Geotechnics. 2020, 123:103588.

李润发,王桂尧,张永杰,等.种植香根草根系对膨胀土特性影响的试验研究[J].公路交通科技,2020,37(5):43-52.

鲜少华,许英姿,姚海林,等.锚固加强植被系统约束膨胀土变形模型试验研究[J].岩土力学,2017,38(S1):158-166.

周婷,张寅生,高海峰,等.青藏高原高寒草地植被指数变化与地表温度的相互关系[J].冰川冻土,2015,37(1):58-69.

Wang Guiyao, Huang Yonggang, Li Runfa, et al. Influence of vetiver root on strength of expansive soil-experimental study[J]. PLoS One, 2020,15(12):e0244818.

Tan Huiming, Chen Fumao, Chen Jia, et al. Direct shear tests of shear strength of soils reinforced by geomats and plant roots[J]. Geotextiles and Geomembranes, 2019,47(6):780-791.

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