首页>
外国专利>
EXCAVATION METHOD FOR A 2-ARCH TUNNEL AND THE STRUCTURE AND DESIGN CAPABLE OF SECURING BEARING STRENGTH AND DRAINING FUNCTION OF THE CENTRAL GROUND OF A TUNNEL WITH IMPROVED INSTALLATION METHOD FOR AN INTERMEDIATE WALL OF A TUNNEL
EXCAVATION METHOD FOR A 2-ARCH TUNNEL AND THE STRUCTURE AND DESIGN CAPABLE OF SECURING BEARING STRENGTH AND DRAINING FUNCTION OF THE CENTRAL GROUND OF A TUNNEL WITH IMPROVED INSTALLATION METHOD FOR AN INTERMEDIATE WALL OF A TUNNEL
展开▼
机译：隧道中墙改进安装法的二拱隧道开挖方法及隧道中心地基承载力和排水功能的设计与设计能力
展开▼
页面导航
摘要
著录项
相似文献
摘要
PURPOSE: An excavation method for a 2-arch tunnel is provided to support the center where the load of a tunnel is concentrated by removing a drainage layer of the existing tunnel and adhering closely to the ground by grouting, to drain off infiltration effectively and to prevent a water leakage of the existing tunnel by installing continuously together with the tunnel lining. CONSTITUTION: The excavation method for a 2-arch tunnel comprises the steps of: excavating the upper part of a center tunnel; excavating the lower part of a center tunnel; forming an intermediate wall(20) by assembling reinforcing bars and placing concrete, and grouting an upper gap of the intermediate wall(20); excavating the upper part of a left main tunnel; excavating the upper part of a right main tunnel; excavating the lower part of the left main tunnel; excavating the lower part of the right main tunnel; and forming a low point on both sides of the intermediate wall(20) to gather water, and installing a drain ditch(85) on a construction joint of the intermediate wall(20) to function as an expansion joint, so that the water gathered in the lower point by non-woven fabrics(50) and waterproof cloth(60) installed on the intermediate wall(20) enables to drain off through a perforated drainpipe(80) and a drain ditch(85) smoothly.
展开▼
