2024-03-28T09:49:21Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00011219
2022-12-14T03:59:11Z
1016:1018:1103:1114
冬期における林道の路面凍上について
Research in the Frost-heaving of Forest Road in Winter
井, 博道
井上, 裕
As a fundamental investigation for the maintenance of forest road surface in winter, we measured frost-heaving of forest road. We set 8 measure points and measured the frost-heaving height of each point at intervals of about 10 days from early in December to early in April. As a result, it appears follows. 1. there is nearly connection between frost-heaving and solar rediation. Frost-heaving is higher at hide place than at sunny place and also the period of frost-heaving is longer at hide place than at sunny place. 2. In each position of road, the frost-heaving is lowest at shoulder and lower at the cutting side then at banking side. 3. It is no effection of ballast less than 10cm depth to decrease og frost-heaving. 4. There is an inverse relation between frost-heaving and temperature. At hide place the frost-heaving reachs highest level at late in February and finishs at late in March, but at sunny place 15~20 days earlier than hide place. 5. Ae rain in March accelerates the thaw.
Article
信州大学農学部演習林報告 28: 37-50(1991)
信州大学農学部附属演習林
1991-10-15
jpn
departmental bulletin paper
VoR
http://hdl.handle.net/10091/14042
https://soar-ir.repo.nii.ac.jp/records/11219
0559-8613
AN00121330
信州大学農学部演習林報告
28
37
50
https://soar-ir.repo.nii.ac.jp/record/11219/files/Agri_Forests-28-03.pdf
application/pdf
623.1 kB
2015-09-25