湖南科技大学潇湘学院本科生毕业设计（论文）

－i－ 摘 要

本设计围绕重庆奥特莱斯配套道路工程隧道右线而进行，本隧道为高速公路隧道短隧道，隧道长251.424m，设计为双向四车道，设计车速为100km/h，建筑限界净宽为10.75m。衬砌采用三心圆曲墙式结构，支护结构和围岩共同承载，并充发挥出围岩的自承能力。以新奥法施工作为隧道结构设计指导，依托隧道围岩条件较复杂，包括IV、V级二种级别的围岩，相应围岩段均采用包含有初支、防水层、二衬组成的复合式衬砌。

初期支护为喷锚支护，采用锚杆、喷射混凝土、钢筋网、钢拱架共同作用，二次衬砌采用模筑砼。洞门设计严格按照《公路隧道设计规范》（GTJ-2004）中的相关规定进行相关验算，采用端墙式洞门；初支根据《公路隧道设计规范》（GTJ-2004）、《隧道工程》和相关工程实例进行设计。

二次衬砌利用理正岩土6.0版软件算出相关数据，并进行配筋计算；同时，根据相关参考资料和工程实例进行了隧道施工组织设计、防排水设计和监控量测的设计，绘制了相应的图纸。

关键词：短隧道；新奥法；曲墙；复合式衬砌；端墙式洞门

湖南科技大学潇湘学院本科生毕业设计（论文）

－ii－ ABSTRACT

The design is carried out on the right line of the road tunnel of the auxiliary road

in Chongqing. The tunnel is a short tunnel of the expressway tunnel，Tunnel length

251.424m, designed for two-way four lanes， the design speed is100km/h，Clearance

width to 10.75m. of the three circular curved wall lining structure, supporting

structure and surrounding rock bearing together, and full play the self bearing capacity

of surrounding rock. The new Austrian law as the core design of tunnel structure,

surrounding rock tunnel contract is complex, IV, V two levels of surrounding rock in.

IV and V are used at the beginning of rock section, waterproof layer, composite lining

lining consisting of two.

The initial support for the spray anchor, anchor bolt, shotcrete, steel mesh,

common steel arch, two lining by formworking concrete. In strict accordance with the

portal design code for design of highway tunnel (GTJ-2004) of the relevant provisions

of the related checking by end wall portal; primary support according to code for

design of highway tunnel (GTJ-2004), of tunnel engineering and related engineering

design examples;

two lining using Lizheng geotechnical software version 6 to calculate the

relevant data, and reinforcement calculation; at the same time, according to the

relevant reference materials and engineering example of a tunnel construction design,

design of drainage design and monitoring, rendering the corresponding drawings.

Keywords: short tunnel; NATM; curved wall; composite lining; side wall portal

湖南科技大学潇湘学院本科生毕业设计（论文）

－iii－ 目 录

第一章 设计任务及原始资料 .................................................................. 1

1.1 工程概况........................................................................................................ 1

1.2 线路条件........................................................................................................ 1

1.3 工程地质及水文地质条件............................................................................ 1

1.4 经济技术条件................................................................................................ 1

第二章 隧道总体设计 ............................................................................ 3

2.1 一般规定与设计原则...................................................................................... 3

2.1.1 一般规定................................................................................................ 3

2.1.2 设计原则.............................................................................................. 3

2.2 主要技术标准及执行规范............................................................................ 4

2.2.1 技术标准.............................................................................................. 4

2.2.2 执行规范.............................................................................................. 4

2.3 设计依据.......................................................................................................... 5

2.4 隧道平面及纵断面设计................................................................................ 5

2.5 隧道横断面设计............................................................................................ 5

2.5.1 隧道建筑限界...................................................................................... 5

2.5.2 隧道衬砌内轮廓线设计...................................................................... 6

2.6 支护形式的选择............................................................................................ 7

2.6.1 洞门衬砌设计...................................................................................... 7

2.6.2 洞身衬砌设计...................................................................................... 7

第三章 洞门设计与计算 ........................................................................ 9

3.1 洞口地质条件................................................................................................ 9

3.2 洞门类型的选择............................................................................................ 9

3.3 洞门各部的尺寸拟定.................................................................................... 9

3.4 计算参数...................................................................................................... 10

3.4.1 土压力计算........................................................................................ 10

3.4.2 端墙稳定性验算................................................................................ 12

3.4.3 主洞端墙验算.................................................................................... 14

第四章 隧道初期支护设计与计算 ...................................................... 17

4.1 概述.............................................................................................................. 17

4.2 初期支护的设计.......................................................................................... 17

4.3 V级围岩初期支护设计计算 ...................................................................... 17

4.3.1 喷混凝土提供的支护抗力P1值 ..................................................... 18

4.3.2 钢支撑提供的支护抗力P2值 ......................................................... 19

4.3.3 锚杆提供的支护抗力P3值 ............................................................. 20

4.3.4 围岩本身提供的支护抗力P4值 ..................................................... 21

4.3.5 最小支护抗力值Pmin ...................................................................... 22