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한국조경학회 / v.31, no.5, 2003년, pp.1-10 
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삽목에 의한 갯버들 근계의 토양전단강도 보강효과
( The Effect of Reinforcing Soil Shear Strength by a Root System Developed from Direct Sticking of Salix gracilistyla Miq ) |
| 이춘석;임승빈; 진주산업대학교 조경학과;서울대학교 조경학과;
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| 초 록 |
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| The purpose of this study was to verify the shore margin protection effect of a root system developed from direct sticking of Salix gracilistyla Miq., focusing on the reinforcement of soil shear strength. The materials were 20cm long sticks whose average diameter and weight were 7.52mm and 14.58g respectively, and sandy loam(Sand 60.36%, Silt 28%, Clay 11.64%), whose maximum dry weight(${gamma}$$_{dmax}$) was 1.59gf/㎤ at the water ratio( $W_{opt}$) 13.8%. The direct shearing test(KS F 2343) was applied to cylindric columms(diameter 132mm) of pure soil and two years old root reinforced soil. At each condition of vertical stress, 10N/$ extrm{cm}^2$, 14.41N/$ extrm{cm}^2$ and 18.82 N/$ extrm{cm}^2$, five soil+root columns were sheared. After shear tests, the root area ratio and soil moisture on the shear plane were measured. The results of this research were as follows: 1. The average of root area ratio was 1.86% and the soil moisture 14.67%. 2. Two years old root system was found to increase the soil shear strength of pure soil in terms of Cohesion(C) and Inner friction Angle($phi$) as follows. 3. The relationship between root area ratio and the increased shear strength can be presented with the following equation, $Delta$S ≒ 0.33ㆍ TrㆍAs/A $Delta$S : Increased Shear Strength Tr : Average Tension Strength of Root, Ar/A : Root Area Ratioioage Tension Strength of Root, Ar/A : Root Area Ratioio |
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| 키워드 |
| Bio-Engineering;Salix;Soil Shear Strength;Root System; |
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한국조경학회지 / v.31, no.5, 2003년, pp.1-10
한국조경학회
ISSN : 1225-1755
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922121872)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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