法国的法兰西岛(俗称巴黎大区)四处环绕着河流,砂石资源非常丰富,家族企业A2C建材公司已在砂石开采和加工领域经营了超过50年,人们从河道中开采砂石,并供应给混凝土和预制件生产企业。现在,A2C公司开采砂石的利器是一台森尼伯根655HD型拉铲挖掘机,一个工作循环只需40s,森尼伯根655HD就能从深达10m的河床中挖出1.9m~3砂石。水下开挖有很多种手段,根据地形地貌以及水下的情况而定,根据平台的位置可分为船上开挖和陆上开挖。陆上开挖又可采用加长臂反铲挖掘机、抓斗挖掘机和拉铲挖掘机,这3 France Ile de France (commonly known as the Paris region) is surrounded by rivers, sand and gravel resources are abundant, the family business A2C building materials company has been operating in gravel mining and processing more than 50 years, people from the river in the sand and mining, and supply For concrete and prefabricated parts manufacturing enterprises. Now A2C’s gravel cutter is a Sunnyside 655HD dragline shovel, with a single work cycle of only 40 seconds and the Sunnier 655HD capable of digging 1.9m to 3m from a riverbed of up to 10m Gravel. Underwater excavation there are many means, according to the topography and underwater conditions, according to the location of the platform can be divided into ship excavation and onshore excavation. Land excavation can be used plus long arm backhoe excavators, grab excavators and dragline excavators, this 3