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(一)根石走失的原因:一、坝向突出,顶冲大溜,位置重要的当家坝,根石走失严重。因为坝向突出,必然卡溜,河道狭窄,宣泄不畅,造成上下垮角水面高低相差悬殊,致使根石走脱。二、主坝坡度过陡(如浆砌和干砌石塌坡度一比○.三五者),根石易于走失;原因是坝身坡度易于卧溜,使溜势不易滑下,必然造成坝前溜势翻滚,掏刷严重,使上部根石被搅动而走失;坝身坡
(A) root cause of the loss: First, the dam to highlight the top Chongli slip, the location of the dam dam, a serious loss of roots. Because of the dam to the prominent, inevitable slip card, river narrow, poor catharsis, resulting in a great disparity between the level of the upper and lower corner of the surface, resulting in the root stone walk away. Second, the main dam slope is too steep (such as masonry and dry masonry slope gradient of one o ○ .35), the root stone is easy to lose; reason is that the slope of the dam body is easy to slip, so slippery is not easy to slip down, will inevitably lead to dam Slipping rolling, digging brush serious, so that the upper part of the stone was stirred and lost; dam slope