PDF Download

[1]ZHANG Xin,LIU Jing,ZHENG Yonggang,et al.Study on the Anti-Fracture Mechanical Properties of Four Kinds of Straight Roots[J].Research of Soil and Water Conservation,2016,23(05):338-342.

Copy

Study on the Anti-Fracture Mechanical Properties of Four Kinds of Straight Roots

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 05 Page number: 338-342 Column: Public date: 2016-10-28

Title:: Study on the Anti-Fracture Mechanical Properties of Four Kinds of Straight Roots

Author(s):: ZHANG Xin¹, LIU Jing², ZHENG Yonggang², YIN Ruiping¹, WU Yongsheng¹, GUO Jianying¹; 1. Institute of Water Conservancy Science, Ministry of Water Resources in Inner Mongolia, Hohhot 010020, China;
2. College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot 010019, China

Keywords:: straight root; anti-fracture features; diameter grade

CLC:: Q947.6

DOI:: -

Abstract:: Fixed-ends broken experiments were set up by the TY-8000 servo-type powerful machine in this study, the straight roots of Caragana microphylla, Hippophae rhamnoides, Salix psammophila and Artemisia sphaerocep were used as test material to find the difference about anti-fracture forces, the anti-fracture strength between straight roots of diameter grade while the roots in the soil body was affected by the radial fracture force perpendicular to the axis of the root. The result showed that within the scope of the 1～6 mm diameter, anti-fracture forces of straight root had a power growing pattern with the increase of root diameter, but anti-fracture strength reversed; there were significant differences on the average anti-fracture forces, anti-fracture strength of taproot of four kinds plant species under significant level a=0.05. With the diameter increase, the range of the average anti-fracture forces of four kinds of plants taproot of Caragana microphylla, Salix psammophila, Hippophae rhamnoides and Artemisia sphaerocep were (79±5.8)~(1 119±104.46), (32±6.12)~(410±36.1), (12±1.5)~(141±6.2), (8±1.2)~(100±2.56) Newton, while the ranges of the average anti-fracture strength of four kinds of plants taproot of Caragana microphylla, Salix psammophila, Hippophae rhamnoides and Artemisia sphaerocep were (62±9.68)~(43±4.01), (25±3.82)~(15±1.42), (8±1.01)~(6±1.29), (6±0.61)~(4±0.14) MPa, respectively. Within the scope of the 1～6 mm diameter, the average of maximum broken deformation was no difference between 4 plants, the order of the average of maximum broken deformation was Caragana microphylla(16.77 mm) > Salix psammophila(14.7 mm) > Hippophae rhamnoides(11.22 mm) > Artemisia sphaerocep(8.68 mm).

References:: [1] 张俊云,周德培.红层泥岩边坡生态防护机制研究[J].岩石力学与工程学报,2006,25(2):250-256.
[2] 高德彬,倪万魁,杨泓全.黄土地区公路路堑高边坡植物防护探讨[J].路基工程,2007(5):125-127.
[3] 江锋,张俊云.植物根系与边坡土体间的力学特性研究[J].地质灾害与环境保护,2008,19(1):57-61.
[4] 晏益力,宋云.植物根系-土体的相互作用力学模型[J].湖南城市学院学报:自然科学版,2006,15(2):10-11.
[5] 王库.植物根系对土壤抗侵蚀能力的影响[J].土壤与环境,2001,10(3):250-252.
[6] 李红丽,董智,王林和,等.浑善达克沙地榆树根系分布特征及生物量研究[J].干旱区资源与环境,2002,16(4):99-105.
[7] 李为萍,史海滨,胡敏.沙地柏根系径级对根土复合体抗剪强度的影响[J].土壤通报,2012,43(4):934-937.
[8] 封金财,王建华.植物根的存在对边坡稳定性的作用[J].华东交通大学学报,2003,20(5):42-45.
[9] Stokes A, Atger C, Bengough A G, et al. Desirable plant root traits for protecting natural and engineered slopes against landslides[J]. Plant and Soil, 2009,324(1/2):1-30.
[10] 陈丽华.林木根系固土力学机制[M].北京:科学出版社,2008.
[11] 王韵秋,郝绍卿,于得荣,等.老参地土壤理化性状的变化[J].特产研究,1979(3),1-9.
[12] Waldron L J, Dakessian S. Effect of grass, legume, and tree roots on soil shearing resistance[J]. Soil Science Society of America Journal, 1982,46(5):894-899.
[13] 乔娜,余芹芹,卢海静,等.寒旱环境植物护坡力学效应与根系化学成分响应[J].水土保持研究,2012,19(3):108-113.
[14] 罗春燕,吴楚,芦光新,等.三江源区植物根-土复合体的抗拉拔力特征及影响因素分析[J].水土保持研究,2014,21(5):260-266.
[15] 苑淑娟.4种植物单根抗拉力学特性的研究[D].呼和浩特:内蒙古农业大学,2010.

Similar References:

Memo

Last Update: 1900-01-01