Canoes can hold more gear , and paddlers can get out of the boats easily for quick scouting ; kayaks don t swamp in big water and are useful for rescuing the occasional canoe paddle or canoeist that slips out of the capsized canoe 独木舟可以存放更多东西，并且探险者可以容易地离开船只快速探索；皮船不会沉没在大水中，有助于抢救偶然从倾覆的独木舟中滑出的独木舟划桨（或划船人） 。
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，最危险滑移路径处于坝基面以下浅层，滑移通道为从上游坝踵拉裂区沿近直线方式向下游坝趾滑出；正常蓄水位时， 9b 、 4b坝段最危险滑移路径安全系数分别为k _ s = 4 . 15 、 3 . 05 。
