郑州黄河长管袋结构实验坝应用效果分析

郑州市黄河长管袋结构实验坝近年来出险具有猛墩猛蛰的特点，往往土胎裸露，在大水或险恶水流条件下出险并迅速垮坝的威胁较大．其出险的原因在于长管袋排体在水流的长期作用下，突然发生滑动或断裂破坏、该坝型给巡坝查险、预防出险造成困难．随着长管袋的日益变形、破坏，其出险将会加剧．建议对该坝型进行加固处理，设置类似于险工工程的根石台，该坝型的继续实验应在重大改进后进行。

Analysis of applied effects of long tubular pocket experimental spur dike on the Yellow River in Zhengzhou City

In recent years,the dangers caused by the long tubular pocket experimental spur dike on the Yellow River in Zhengzhou City are characterized by sudden settlement of dike. In this case, its earth filler is usually exposed and subject to water flow erosion and this has led to serious destruction of the spur dike. The mechanism of destruction is the sliding or rupture of the long tubular pocket body due to the long,term erosion of water flow. It is difficult to find out and prevent these dangers during inspections. Along with the growth of deformations and damages, the dangers are increasing. Remedial treatment for the spur dike with a stone support at bottom is recommended.