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1 基本情况老君堂控导是黄河下游河道整治的重要节点工程之一,历次洪水期间,该工程多次出险,根石走失严重。为适应沙质河床的冲刷变形,提高工程的安全性,达到减少出险机遇和被动出险的目的,对裹护段采用了铰链式模袋混凝土沉排护底代替传统抛石护根。2 铰链式模袋混凝土沉排设计2.1 铰链式模袋混凝土沉排护底的原理铰链式模袋混凝土沉排护底结构使用新型化纤布作模板,内充具有一定流动度的混凝土或砂浆,在灌注压力的作用下,混凝土或砂浆中多余的水份被从模袋内挤出,形成高密度、高强度的固结体。模袋采
1 Basic conditions Laojuntang control is one of the important nodes in the river regulation of the lower Yellow River. During the previous floods, the project repeatedly ran out of danger and the root and stone lost their way. In order to adapt to the scouring and deformation of the sandy riverbed, improve the safety of the project, and achieve the goal of reducing the chances of being out of danger and being passive, the article uses the hinged bag-shaped concrete sinking and protecting bottom to replace the traditional stone protecting root. 2 hinge-type bagged concrete sinking design 2.1 The principle of hinge-type bagged concrete sinking and shoring The hinged bag-type concrete sinking and protecting bottom structure uses a new type of chemical fiber cloth as a template, filled with a certain degree of mobility of concrete or mortar in Under the effect of perfusion pressure, excess water in concrete or mortar is extruded from the mold bag to form a high-density, high-strength consolidated body. Bag mining