论文部分内容阅读
1 土工织物沉排坝的结构类型黄河新乡段修建的土工织物沉排坝根据坝顶是否溢流分为溢流坝(即潜坝)和非溢流坝;根据土工织物沉排结构可分为化纤编织袋沉排坝、长管袋沉排坝(庄潜坝)和长管袋褥垫沉排坝。2 土工织物沉排的设计与施工2.1 沉排设计2.1.1 沉排护底宽度。根据黄河下游河床冲刷性强的特点,护底沉排应能满足冲刷下沉直至稳定的要求。沉排围护宽度取决于两个方面,一是排前冲刷坑最终稳定的深度,二是排体最终稳定的坡度。①坝前最大冲刷深度确定。结合土工织物沉排坝的实际情况,一般坝前最大冲刷坑选择15～18m。②冲刷坑
A geotextile sediment dam structure type Geotextile drainage dam constructed by the Xinxiang section of the Yellow River is divided into overflow dam (ie, sub-dam) and non-overflow dam according to whether the crest is overflow; according to geotextile sinking structure can be divided into Chemical fiber woven bag sinking dam, long tube bag sinking dam (Zhuang sub-dam) and long tube bag cushion Shen row dam. 2 geotextile sink row design and construction 2.1 sink row design 2.1.1 sink row bottom width. According to the characteristics of the scouring of the lower reaches of the Yellow River, the sinking should be able to meet the sinking sinking until stable requirements. Sinking width depends on two aspects, one is the depth of the final scour pit before the final stability, the second is the final slope of the body row stability. ① maximum depth of erosion before the dam to determine. Combined with the actual situation of geotextile sedimentation dam, the maximum scour pit in front of the dam is 15 ~ 18m. ② scour pit