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工程介绍:瑞士的 Baregg 隧道交通十分拥挤,往往车辆堵塞长达数公里,事故频繁。因此当局要开通另一条隧道。该隧道位于旧隧道北侧,距离仅30米,长度1 152m,可容纳三条车道,因此截面达150m~2。由于工程所处地形复杂,又不可危及已有的交通,不能采取爆炸。常规的开挖方法(见图2)又不适用于该狭窄地面,因为切割机开凿下来的石料必须用挖掘机清理到上层,然后由上层的挖掘机装到卡车上,另外还要用一台挖掘机修整成形,而且开挖时尘土很多,劳动量也很大,需要三班工作,每天
Project Description: Switzerland Baregg tunnel traffic is very crowded, vehicles often jam up to several kilometers, frequent accidents. Therefore, the authorities should open another tunnel. The tunnel is located on the north side of the old tunnel at a distance of only 30 meters and a length of 1,152m. It accommodates three lanes and therefore has a cross-section of 150m2. Due to the complex topography of the project and the existing traffic which can not be endangered, the explosion can not be taken. Conventional excavation methods (see Figure 2) do not apply to this narrow ground because the stones cut by the cutting machine must be cleared to the upper level by an excavator and then loaded onto the truck by an excavator at the upper level, Excavator dressing shape, and the excavation of a lot of dust, a lot of labor, you need three shifts, every day