@article{oai:soar-ir.repo.nii.ac.jp:00011302,
 author = {辰野,  良秋 and 堀内,  照夫},
 journal = {信州大学農学部演習林報告},
 month = {Aug},
 note = {This paper is the observation on the relation between depth of frozen soil freezing and accumulative temperature, permeability, compressive strength of frozen soil. The results are summarized as follows; 1. Depth of frozen soil in southern shinshu. (1) Without influence of snow, depth of frozen soil (H) was proportion to a square root of accumulative temperature (U), and obtained following practical expression.〓 Here, U was the total of the mean temperature by the near weather station. (2) Generlly speaking, depth of frozen soil in the sunshine was a half of that in the shade. 2. Permeability of frozen soil. (1) Permeability of frozen soil was influenced by soil moisture content before freezing and its type was peculiar.〓 K: Coefficient of permeablity of unfrozen soil 3. Compressive strength of frozen soil. (1) Compressive strength of frozen soil was affected by nature of soils, and showed the highest strength when it was the largest density. In the case of soil variables, generally, increased with the effective soil texture, however, influence of strength of soil itself before freezing was very little. (2) Compressive strength of frozen soil was largely than one of ice itself on same degree and the ratio of the compressive strength was shown by function of the soil moisture content. (3) Compressive strength of frozen soil was not affect of accumulative temperature but increased with in proportion the lowest degree of temperature., Article, 信州大学農学部演習林報告 6: 79-98(1969)},
 pages = {79--98},
 title = {山腹工作物の凍害防止に関する研究 : 凍結破壊に関係する凍結土壌の性質について},
 volume = {6},
 year = {1969}
}