本文選題：護(hù)坡 + 根系��； 參考：《華中科技大學(xué)學(xué)報(bào)(自然科學(xué)版)》2014年08期

【摘要】：以護(hù)坡典型植物多花木蘭根系為對(duì)象進(jìn)行室內(nèi)抗拉試驗(yàn);在假定滑動(dòng)面平行于坡面的前提下,推導(dǎo)生態(tài)護(hù)坡中坡體穩(wěn)定系數(shù)的計(jì)算公式;研究不同坡度下根系的抗拉力、抗拉強(qiáng)度、彈性模量及邊坡的穩(wěn)定性.研究表明:多花木蘭根系抗拉力隨著直徑的增大呈冪函數(shù)增加;根系抗拉強(qiáng)度為21.15~76.08MPa,隨著直徑的增加呈冪函數(shù)減小;坡度越大,同一直徑根系的抗拉力與抗拉強(qiáng)度越大.多花木蘭根系彈性模量為0.64~2.33GPa,隨著直徑的增加其彈性模量逐漸減小;根系直徑為1.2~2.2mm時(shí),彈性模量減小的幅度大,其他區(qū)間減小的幅度較小.坡體的穩(wěn)定系數(shù)與根系的抗拉力呈正相關(guān)關(guān)系,與邊坡的坡度呈負(fù)相關(guān)關(guān)系,并受根的生長(zhǎng)方向和密度、植物的種植密度以及原狀土的性質(zhì)等影響.坡體的穩(wěn)定系數(shù)隨根系直徑的增加呈線性增加.
[Abstract]:The indoor tensile tests were carried out on the Hua Mulan roots of typical plants in slope protection. On the assumption that the sliding surface was parallel to the slope surface, the calculation formula of the stability coefficient of the slope body was derived, and the tensile strength of the root system under different slope degrees was studied. Tensile strength, elastic modulus and slope stability. The results showed that the tensile strength of multiple Hua Mulan roots increased by power function with the increase of diameter, the tensile strength of root system was 21.1576.08MPa, and decreased with the increase of diameter. The larger the slope, the greater the tensile strength and tensile strength of root system with the same diameter. The elastic modulus of multiple Hua Mulan roots was 0.64 ~ 2.33 GPA, and the elastic modulus decreased gradually with the increase of diameter. When the root diameter was 1.2~2.2mm, the elastic modulus of root system decreased by a large extent, while that of other regions decreased slightly. The stability coefficient of slope was positively correlated with root tensile strength, negatively correlated with slope gradient, and affected by root growth direction and density, plant planting density and properties of undisturbed soil. The stability coefficient of slope increased linearly with the increase of root diameter.
【作者單位】： 華中科技大學(xué)土木工程與力學(xué)學(xué)院;湖北工業(yè)大學(xué)土木工程與建筑學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51178166) 2012年湖北省科技廳創(chuàng)新群體項(xiàng)目(2012FFA035) 教育部新世紀(jì)優(yōu)秀人才支持計(jì)劃資助項(xiàng)目(NCET-11-0962)
【分類號(hào)】：S792;U416.14

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