[1]HUANG Xiao-le,XU Wen-nian,XIA Zhen-yao.Direct Shear Test of Root-Soil Composite System by Two Representative Herb Plants in Vegetation-Growing Concrete Base Material[J].Research of Soil and Water Conservation,2010,17(04):158-161,165.
Copy
Direct Shear Test of Root-Soil Composite System by Two Representative Herb Plants in Vegetation-Growing Concrete Base Material
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 04
Page number:
158-161,165
Column:
Public date:
2010-08-20
- Title:
- Direct Shear Test of Root-Soil Composite System by Two Representative Herb Plants in Vegetation-Growing Concrete Base Material
- CLC:
- X171.4;S157
- DOI:
- -
- Abstract:
- Two representative herb plants Bermuda grass and Medicago sati are planted in the vegetation-growing concrete base material in the testing areas,then direct shear tests on the unplanted soil and root-soil composite system are conducted.The distribution pattern of the anti-shearing strength of root-soil composite system with increasing depth in different soil layers is studied.By comparing the shear strength indexes of the soil without roots and two kinds of soils with roots,the mechanical effects of the root-soil composite system of two herb plants with six-month growth period can be verified and quantified.The results showed that the variation trend of the cohesion in different soil layers of the root-soil composite systems increased in 2-4cm soil layer and then it decreased,and there were no apparent changes in the internal friction angle with the depth increase of the soil.Compared with the cohesion of soil without roots,the maximum increasing amplitudes of the cohesion of Bermuda grass and Medicago sati were 129.4% and 77.0%,respectively.The anti-shearing strength of root-soil composite system of Bermuda grass was better than that of Medicago sati after six-months growth period.
- References:
-
[1] 陈昌富,刘怀星,李亚平.加筋土的护坡机理及强度准则试验研究[J].中南公路工程,2006,31(2):14-17.
[2] 汤劲松,刘松玉,童立元.植物根系的加筋作用对浅埋公路隧道施工稳定的影响[J].东南大学学报:自然科学版,2009,39(2):334-339.
[3] Wu T H,Mckinnell W P,Swanston D N.Strength of tree roots and landslides on Prince of Wales Island,Alaska[J].Canadian Geotechnical Journal,1979(1):19-33.
[4] 高齐治,张俊斌,张新萍.台湾西南部优势竹类籁竹根力之研究[J].世界竹藤通讯,2008(1):10-15.
[5] 李成凯.青藏高原黄土区四种草本植物单根抗拉特性研究[J].中国水土保持,2008(5):33-36.
[6] 李国荣,毛小青,倪三川,等.浅析灌木与草本植物护坡效应[J].草业科学,2007,24(6):86-89.
[7] 刘秀萍,陈丽华,宋维峰.林木根系与黄土复合体的抗剪强度试验研究[J].北京林业大学学报,2006,28(5):67-72.
[8] 付海峰,姜志强,张书丰.植物根系固坡效应模拟及稳定性数值分析[J].水土保持通报,2007,27(1):92-98.
[9] 及金楠,张志强,Fourcaud Thierry,等.鲱骨状根构型对典型土体抗倾覆力的有限元分析[J].中国水土保持科学,2007,5(3):14-18.
[10] Kassiff G,Kopelovitz A.Strength properties of soil-root systems[J].Israel Institute of Technology,1968(25):36-44.
[11] Waldron L J,Dakessian S.Soil reinforcement by roots:calculation of increased soil shear resistance from root properties[J].Soil Science,1981,13:427-435.
[12] Nilaweera N S.Effects of tree roots on slope stability:the case of Khao Luang Mountain area,Thailand[M].Bangkok:Asian Institute of Technology,1994.
[13] 周跃,宏伟,徐强.南松幼树垂直根的土壤增强作用[J].水土保持学报,2000,14(5):100-105.
[14] 王文生,杨晓华,谢永利.公路边坡植物的护坡机理[J].长安大学学报,2005,5(4):26-30.
[15] 王铁桥,许文年,叶建军,等.挖方岩石边坡绿化技术与方法探讨[J].三峡大学学报:自然科学版,2003,25(2):101-104.
[16] 程洪,颜传盛,李建庆,等.草本植物根系网的固土机制模式与力学试验研究[J].水土保持研究,2006,13(1):62-65.
- Similar References:
Memo
-
Last Update:
1900-01-01