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http://dx.doi.org/10.14578/jkfs.2019.108.3.322

Analysis of Bearing Capacity Change of Forest Roadbed by Opening Year  

Chen, Hyeong-Uk (Department of Ecology and Environment System, Kyungpook National University)
Kim, Dong-Hyeon (Department of Ecology and Environment System, Kyungpook National University)
Lee, Kwan-Hee (Forest Technology and Management Research Center, National Institute of Forest Science)
Kim, Dong-Geun (Department of Ecology and Environment System, Kyungpook National University)
Publication Information
Journal of Korean Society of Forest Science / v.108, no.3, 2019 , pp. 322-328 More about this Journal
Abstract
The purpose of this study was to provide basic data for maintenance and repair of the forest road surfaces using the light drop weight test (LDWT), density test, and grain size analysis at four sites in Yeongyang-gun Mt. (2011y, 2014y, 2016y, and 2017y). In terms of the density test results, the opening density in 2011 was the highest at $2.0694g/cm^3$, and the opening density in 2017 was the lowest at $1.7443g/cm^3$. The grain size analysis showed that the proportion of large aggregates was highest at the opening in 2017, and the proportion of large aggregates decreased with the delay of opening date. From the LDWT results, $E_{vd}$ (the dynamic deformation coefficient) of the 2011y forest road was $35.7MN/m^2$, 2014y was $30.5MN/m^2$, 2016y was $28.6MN/m^2$, and 2017y was $23.5MN/m^2$. The $E_{vd}$ value for the oldest forests opened with the 2011y forest road was the highest, the average $E_{vd}$ value of the center portion was $21.45MN/m^2$, the average $E_{vd}$ value of the wheel portion of the banking part was $31.31MN/m^2$, and the average $E_{vd}$ value of the wheel portion of the cut part was $36.71MN/m^2$.
Keywords
forest road surface; bearing capacity; light drop weight test; four site; $E_{vd}$;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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