详情

原文传递 Mat Sinking Unit Armors Mississippi River Banks

题名：	Mat Sinking Unit Armors Mississippi River Banks
正文语种：	eng
作者：	FRANK MCCORMACK
摘要：	The river road through St. Gabriel, La., located on the left descending bank near Mile 200 on the Mississippi River, is a quiet stretch, with plots of farmland dwarfing neighborhoods and industry. With the towering river levee blocking the view of the Mississippi, and with the river in the midst of its low-water season, street-level passersby can easily go about their day with little cognizance of the mighty river. For residents walking or cycling atop the river levee in St. Gabriel, though, the view on the other side of the batture tells a different story, with oceangoing ships and barge tows sliding by. And recently, their view also included a wonder of engineering and waterway management that few get to see: the U.S. Army Corps of Engineers' Mat Sinking Unit (MSU). The Mat Sinking Unit works annually on the Mississippi River during low water, laying mats of concrete squares on the river bottom, from the bank toward the channel, to help prevent erosion. Each "square" is a 4-foot by 25-foot piece of concrete. Squares are woven together to form a mat, which slides overboard. Gantry cranes move squares from a supply barge onto the main deck of the mat sinking plant, where deck workers tie them together using pneumatic tools that are unique to the MSU.
出版年：	2021
期刊名称：	Waterways Journal
卷：	134
期：	42
页码：	7-8