基于乔灌木根系加固及柔性石笼网挡墙变形自适应的生态护坡
|
摘要
为了生态加固及防护土质边坡,提高边坡抵抗较深层滑动的能力,研发了根系-拉索-石笼网共同作用的生态护坡系统。工作机理为:浅层滑坡体推动柔性石笼网挡墙前倾,乔灌木根系的抗拔力通过拉索约束住挡墙的位移,从而使坡脚土体由受剪为主改为受压为主。通过数值分析,探讨了将边坡的乔灌木根系的抗拔与石笼网柔性挡墙的变形自适应相结合,联合作用加固挡墙基底以上坡土的可行性。分析结果表明:通过镀锌过塑拉索与根系的联合作用可以有效地限制和减少土坡和柔性石笼网挡墙的渐进变形,从而维持土坡的稳定。
In order to improve the stability of slope,root-cable-gabion net flexible system was developed to control progressive deformation of slope.Mechanical and finite element analyses were performed on the root-cable-gabion net system adaptively stabilized slope.The results showed that due to the flexibility of gabion net retaining wall,root-cable-gabion net system can effectively limit and reduce the progressive deformation of slope and maintain the slope stable.
In order to improve the stability of slope,root-cable-gabion net flexible system was developed to control progressive deformation of slope.Mechanical and finite element analyses were performed on the root-cable-gabion net system adaptively stabilized slope.The results showed that due to the flexibility of gabion net retaining wall,root-cable-gabion net system can effectively limit and reduce the progressive deformation of slope and maintain the slope stable.
引文
[1]Chen Xiaoqing,Chui Peng,Zhao Wanyu,et al.Optimal tim-ing for the control of debris flow in Wenchuan Earthquake area[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):125-130.[陈晓清,崔鹏,赵万玉.汶川地震区泥石流灾害工程防治时机的研究[J].四川大学学报:工程科学版,2009,41(3):125-130.]
[2]Liu Liming,Qiu Weimin,Xu Wennian,et al.Discussion on traditional slope protection and ecological slope protection technolog[J].Journal of China Three Gorges University:Natural Sciences,2007(6):528-532.[刘黎明,邱卫民,许文年,等.传统护坡与生态护坡比较与分析[J].三峡大学学报:自然科学版,2007(6):528-532.]
[3]陈祖煜.土质边坡稳定分析[M].北京:中国水利出版社,2003.
[4]沈珠江.理论土力学[M].北京:中国水利水电出版社,2000.
[5]Cristescu N D,Cazacu O,Cristescu C.A model for slow mo-tion of natural slopes[J].Canadian Geotechnical Journal,2002,39:924-937.
[6]Xie Zhou,Zhu Hongliang,Rao Zhigang,et al.Analytical simulation of the deformation of vegetated soil slope[J].Journal of Sichuan University:Engineering Science Edition,2012,44(S1):89-92.[谢州,朱红亮,饶志刚,等.根系固土岸坡的滑移变形模拟[J].四川大学学报:工程科学版,2012,44(增刊1):89-92.]
[7]Operstein V,Frydman S.The influence of vegetation on soil strength[J].Ground Improvement,2000,4:81-89.
[8]Fan Chia-Cheng.Role of roots in the shear strength of root-reinforced soils with high moisture content[J].Ecological Engineering,2008,33:157-166.
[9]Pollen N.Temporal and spatial variability in root reinforce-ment of streambanks:Accounting for soil shear strength and moisture[J].Catena,2007,69:197-205.
[10]Mickovski S B,Bransby M F,Bengough A G,et al.Resist-ance of simple plant root system to uplift loads[J].Canadian Geotechnical Journal,2010,47:78-95.
[11]周成.植被防护土坡的计算方法[M].北京:中国水利水电出版社,2008.
[2]Liu Liming,Qiu Weimin,Xu Wennian,et al.Discussion on traditional slope protection and ecological slope protection technolog[J].Journal of China Three Gorges University:Natural Sciences,2007(6):528-532.[刘黎明,邱卫民,许文年,等.传统护坡与生态护坡比较与分析[J].三峡大学学报:自然科学版,2007(6):528-532.]
[3]陈祖煜.土质边坡稳定分析[M].北京:中国水利出版社,2003.
[4]沈珠江.理论土力学[M].北京:中国水利水电出版社,2000.
[5]Cristescu N D,Cazacu O,Cristescu C.A model for slow mo-tion of natural slopes[J].Canadian Geotechnical Journal,2002,39:924-937.
[6]Xie Zhou,Zhu Hongliang,Rao Zhigang,et al.Analytical simulation of the deformation of vegetated soil slope[J].Journal of Sichuan University:Engineering Science Edition,2012,44(S1):89-92.[谢州,朱红亮,饶志刚,等.根系固土岸坡的滑移变形模拟[J].四川大学学报:工程科学版,2012,44(增刊1):89-92.]
[7]Operstein V,Frydman S.The influence of vegetation on soil strength[J].Ground Improvement,2000,4:81-89.
[8]Fan Chia-Cheng.Role of roots in the shear strength of root-reinforced soils with high moisture content[J].Ecological Engineering,2008,33:157-166.
[9]Pollen N.Temporal and spatial variability in root reinforce-ment of streambanks:Accounting for soil shear strength and moisture[J].Catena,2007,69:197-205.
[10]Mickovski S B,Bransby M F,Bengough A G,et al.Resist-ance of simple plant root system to uplift loads[J].Canadian Geotechnical Journal,2010,47:78-95.
[11]周成.植被防护土坡的计算方法[M].北京:中国水利水电出版社,2008.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心