비탈면의 凍結融解浸蝕에 關한 硏究 = Studies on Freezing-Thawing Erosion from Slopes

다국어 초록 (Multilingual Abstract)

To examine soil erosion phenomena by freeze-thaw mechanism, soil moisture, underground soil temperature, soil hardness, and air temperature were investigated during two successive winter seasons(Jan. 16-Mar. 25, 1988 and Dec. 15, 1988-Mar. 20, 1989) for the designed cut slopes at the Colleage of Agriculture, Seoul National University, Suwon, Korea.
The results of this study should be summarized as follows;
1. Soil moisture of northern slope was higher than that of southern slope.
2. Soil hardness during the freezing-thawing period was higher than during the thawing period. Mean soil hardness of the northern slope (18.84, 18.12㎏/㎠) was higher than that of southern slope (4.59, 4.32㎏/㎠) during the freezing-thawing period, but northern slope (1.00, 1.21㎏/㎠) had a lower value than southern slope (2.38, 2.24㎏/㎠) during the thawing period.
3. Mean amounts of soil erosion of the southern slope (8,703, 3,576㎤/㎡) during the examined periods were higher than those of northern slope (7,024, 2,693㎤/㎡).
4. Freeze-thaw erosion phenomena were influenced by soil moisture and variation of soil temperature.
5. From the results of this study the amount of soil erosion by freesz-thaw mechanism was greater at the southern slope than at the northen slope. It must be taken into consideration of lowering the gradient of southern slope than that of northern slope in designing a forest road.