隧道主体结构及主要工程项目的施工设计方案.docVIP

摘要 本设计对包家山隧道的主体结构及主要工程项目的施工进行了设计，内容主要包括：对隧道平面、纵断面、横断面的设计以满足经济、合理、安全、施工容易等要求；在考虑尽量少刷坡和隧道“早进洞、晚出洞”的原则确定洞门位置；根据隧道进出口地形和工程地质条件，结合开挖边仰坡的稳定性及洞口防排水需要，选用经济、美观并有利于视线诱导的洞门形式；采用假定抗力图形法，考虑弹性反力作用，对隧道衬砌结构设计和计算以保证衬砌能够满足围岩压力的要求；选择合适隧道施工工艺使之满足本隧道围岩节理发育、围岩不稳定易发生变形等要求；在开挖过程中，采用光面爆破技术，并进行科学管理。 关键词：隧道；主体结构；施工；设计 Abstract The design design the major structure and the construction of main engineering of Baojiashan tunnel, the content mainly includes: Plane of the tunnel, vertical section of the tunnel, cross section of the tunnel design to meet the needs of the economy, a reasonable, safe, easy construction, etc. Brush as little as possible in considering the slope and tunnel getting in the tunnel portal as early as possible and getting out the tunnel portal as late as possible principle to determine the location of portal;.import and export under the tunnel and engineering geological conditions of the terrain, combined with the excavation side slope stability and Yang drainage holes need to choose the economic, aesthetic and conducive to the form of attention-induced portal; Using putative resistance graphic method,in consideration of the elastic force, structural design of tunnel lining and calculation to ensure the lining to meet the requirements of pressure of surrounding rock Choosing the right tunnel construction craft to meet the joint development of tunnel surrounding rock, rock deformation prone to instability, etc; In the excavation process, smooth exploding will be used，and scientific management will be a necessary step. Key words : tunnel; major structure; construction; design 目录 第一章 工程概况 1 1.1 地理位置 1 1.2 地形地貌 1 1.3 隧道地质 1 1.4 气候气象 2 1.5 主要技术标准 2 1.6 设计依据 3 第二章 总体设计 4 2.1 平面设计 4 2.2 纵断面设计 4 2.3 横断面设计 5 2.3.1 建筑限界 5 2.3.2 紧急停车带 6 2.3.3 横向通道 6 2.3.4 内轮廓设计 7 2.4 洞门、明洞设计 7 2.4.1 洞口设计 7 2.4.2 洞门设计 8 2.4.3 明洞设计 9 2.5 建筑材料 10 第三章 围岩压力计算 11 3.1 埋深类型判断 11 3.2 围岩压力计算 12 第四章 衬砌设计 13 4.1预支护设计 13 4.1.1 超前锚杆设计 13 4.1.2 小导管注浆设计 14 4.1.3 管棚设计 14 4.2 初期支护设计 14 4.2.1 喷射混凝土支护设计 15 4.2.2 锚杆