close at heel 中文意思是什麼
close at heel
解釋
緊跟在後-
The study shows that the most likely sliding path is located shallowly under the rock bed and the sliding path runs close to a line from tensile area at dam heel to dam toe. staircase sliding paths buried less than 14 meters bellow dam heel are also dangerous, but they are not the most dominant
研究表明,最危險滑移路徑處于壩基面以下淺層,滑移通道為從上游壩踵拉裂區沿近直線方式向下游壩趾滑出;正常蓄水位時, 9b 、 4b壩段最危險滑移路徑安全系數分別為k _ s = 4 . 15 、 3 . 05 。
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