柱形浮标简介宜昌航道分局在三江直线段施工时，遇到施工放样问题，直线段无法设置挖槽岸标，若设置挖槽导标，距离远，不能达到视线要求，所以口得抛设浮标。为此，结合三江具体情况自行设计了一种挖槽柱形浮导标，其结构见附图示。柱形浮导标是由两个大小不一的棱形浮鼓... Column buoys Brief introduction Yichang Waterway Branch in the construction of the Sanjiang straight line encountered construction out of the question, the straight section can not set the trenching landmarks, if the set guide groove guide, the distance, can not meet the requirements of sight, so the mouth buoys . To this end, combined with the specific circumstances of Sanjiang designed a self-drilling column floating guide, the structure shown in the attached drawings. Cylindrical floating guide is composed of two different sizes of prismatic floating drum ...