ZN-PB SULFIDE DEPOSITS IN THE RAVAR-BAFGH AREA BASED ON SULFUR STABLE ISOTOPES

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AMIRI ALI; RASAE I.; KHAKZAD AHMAD; ADABI MOHAMMAD HOSSEIN

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Paper Information

Journal: GEOSCIENCES Year:2009 | Volume:18 | Issue:72 Page(s): 3-10

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Information Journal Paper

Title

ZN-PB SULFIDE DEPOSITS IN THE RAVAR-BAFGH AREA BASED ON SULFUR STABLE ISOTOPES

Author(s)

AMIRI ALI | RASAE I. | KHAKZAD AHMAD | ADABI MOHAMMAD HOSSEIN | Issue Writer Certificate

Keywords

SLOPE STABILIZATIONQ2

SOIL SHEAR RESISTANCEQ3

APPARENT COHESIONQ3

INTERNAL FRICTION ANGLEQ2

ROOT DIAMETERQ2

ROOT DENSITYQ2

Abstract

Stabilization of potentially sliding terraces and natural slopes are of great importance from view point of resident security, environment protection, river engineering and water and soil conversation. Soil reinforcement using tree toots is one of the methods being studied by many researchers. Most of them have worked on the effect of ROOT DENSITY and few of them on the ROOT DIAMETER leading to contradicting results. In this paper the combined effect of ROOT DIAMETER and density on the shear resistance of soil is investigated by series of in-situ direct shear tests. Eighteen tests were carried out on soil possessing Willow roots and the results compared with those of non rooted soil as reference. To explain the observations, a new parameter referred to as ROOT DIAMETER-density index (RDDI) was defined. The results reveal that an increase in RDDI causes a significant increase in the APPARENT COHESION of rooted soil, but a little decrease in the INTERNAL FRICTION ANGLE. In both cases the rate of variation decreases with increasing RDDI and tends to a little value; however the extreme values of 212% and -15% are observed respectively. As general conclusion for rooted soils, the dominance of variation of APPARENT COHESION with respect to that of INTERNAL FRICTION ANGLE results the shear resistance ameliorates within a range of RDDI, and for further values it tends to a stabilized value. Moreover, for practical purposes, a relation was developed to be used by designer engineers.

Cites

METAL SOURCE DETERMINATION OF CARBONATE - HOSTED ZINC - LEAD DEPOSITS IN THE KUHBANAN-BAHABAD AREA: EVIDENCE FROM MINERALOGY, GEOCHEMISTRY AND RARE EARTH ELEMENTS PATTERNS

References

بررسی ویژگی های زمین شناسی کانسارهای استراتاباند غیرسولفیدی روی و سرب در ناحیه کوهبنان - بهاباد

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APA: Copy

AMIRI, ALI, RASAE, I., KHAKZAD, AHMAD, & ADABI, MOHAMMAD HOSSEIN. (2009). ZN-PB SULFIDE DEPOSITS IN THE RAVAR-BAFGH AREA BASED ON SULFUR STABLE ISOTOPES. GEOSCIENCES, 18(72), 3-10. SID. https://sid.ir/paper/32323/en

Vancouver: Copy

AMIRI ALI, RASAE I., KHAKZAD AHMAD, ADABI MOHAMMAD HOSSEIN. ZN-PB SULFIDE DEPOSITS IN THE RAVAR-BAFGH AREA BASED ON SULFUR STABLE ISOTOPES. GEOSCIENCES[Internet]. 2009;18(72):3-10. Available from: https://sid.ir/paper/32323/en

IEEE: Copy

ALI AMIRI, I. RASAE, AHMAD KHAKZAD, and MOHAMMAD HOSSEIN ADABI, “ZN-PB SULFIDE DEPOSITS IN THE RAVAR-BAFGH AREA BASED ON SULFUR STABLE ISOTOPES,” GEOSCIENCES, vol. 18, no. 72, pp. 3–10, 2009, [Online]. Available: https://sid.ir/paper/32323/en

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