求一篇英文翻译本隧道设计是根据《公路隧道设计规范》JTGD70-2004的规定，对蓝田九房乡冯家湾村冯家湾一号隧道进行设计，该隧道于公路测设里程K47+262.5~K47+455段穿越山体，为直线短隧道

Question

求一篇英文翻译本隧道设计是根据《公路隧道设计规范》JTG D70-2004的规定，对蓝田九房乡冯家湾村冯家湾一号隧道进行设计，该隧道于公路测设里程K47+262.5~K47+455段穿越山体，为直线短隧道。轴向总体走向127 0 最大埋深60.87米。隧道穿越区为构造剥蚀低中山区，隧道穿越一山体隧道轴线与山体近于垂直，地面标高介于 787．228~847.959m，相对高差约60.71m隧道进口地形陡峭，地势险要。 在隧道设计中根据具体地质条件和工程要求对洞口、隧道纵断面、隧道横断面、初期支护、二次衬砌、围岩压力计算、衬砌内力计算（采用手算和电算两种方法）、衬砌验算、隧道组织设计等进行了设计及计算。 该设计重点对隧道横断面进行了设计，横断面采用三心圆法确定横断面，根据《公路隧道设计规范》的规定，及公路设计时速的要求确定了该隧道的横断面。隧道初期支护采用工程类比的方法确定了支护类型。二次衬砌分别采用手算和电算两种方法，两种方法的计算结果基本吻合。本设计还对排水、通风照明进行了设计。另外对隧道的施工也进行了简单的设计其中包括总体部署，隧道洞口的施工，挖掘方法，初期支护，二次衬砌等进行了设计。 本设计全部图纸采用计算机辅助设计绘制，计算机编档、排版、打印出图及论文。 关键词：隧道纵断面，隧道横断面，初期支护，二次衬砌

Answer 1

This tunnel design is according to "Highway tunnel Design Standard" the JTG D70-2004 stipulation, carries on the design to the Lantian nine township Fengjiawan Town Fengjiawan first tunnel, this tunnel surveys the course K47+262.5~K47+455 section traversing mountain massif in the road, for straight line short tunnel. The axial overall moves toward 1270 greatest burying depth 60.87 meters. The tunnel passes through the area to flatten the low mountainous area for the structure, the tunnel passes through a mountain massif tunnel axis and the mountain massif nearly in vertical, the ground table is situated between 787.228~847.959m, the height relationship approximately the 60.71m tunnel imports the terrain to be steep, the topography is important. acts according to the concrete geological condition and the project request in the tunnel design to Dongkou, the tunnel longitudinal section, the tunnel cross section, the initial period supports and protections, two lining works, the adjacent formation pressure calculation, the lining work endogenic force computation (uses hand to calculate that with electricity calculated two methods), the lining work checking calculation, the tunnel organization design and so on have carried on the design and the computation. this design key carried on the design to the tunnel cross section, the cross section has used three heart circle methods to determine the cross section, according to "Highway tunnel Design Standard" the stipulation, and the highway design speed's request has determined this tunnel's cross section. The tunnel initial period supports and protections used the project analogy the method to determine the supports and protections type. Two lining works use the hand to calculate that separately with the electricity calculated two methods, two method's computed results tally basically. This design also to draining water, ventilated the illumination to carry on the design. And has also carried on the simple design to tunnel's construction includes the overall to deploy, the tunnel Dongkou's construction, the excavation method, the initial period supports and protections, two lining works and so on have carried on the design. the this design complete blueprint uses the computer-aided design plan, the computer edits the files, the typesetting, to print the chart and the paper. key word: Tunnel longitudinal section, tunnel cross section, initial period supports and protections, two lining work