过去,济南处在整险中,多站在坝头上直接向坝下扔石,这种办法容易砸伤坝面,而且往往扔得太近, 不能抛到预计位置。石料抛够后。还得向坝外移动,很费力气。在固根和丁扣坝上抛石,尤其麻烦、费劲,有时为了加固根石底部基础,就得向坝外扎个大木架子,这样抛石,危险大,拆移木架也较为困难,使用人工多。 In the past, Jinan was in a complete insurance, more standing on the head of the dam directly to the rock under the dam, this approach easily hurt the dam, and often thrown too close, can not be thrown to the expected location. After the stone throw enough. Had to move outside the dam, very hard. In the solid root and Dingban dumped on the stone, especially troublesome, strenuous, and sometimes in order to reinforce the roots of the bottom of the foundation, you have to tie a large wooden bar outside the dam, so riprap, dangerous, demolition of the wooden frame is also more difficult to use artificial many.