《铁路隧道设计》》-毕业设计（论文）.doc

河南理工大学本科毕业设计（论文） 摘要 PAGE PAGE III 摘要 山西中南部铁路是山西煤炭外运的有一条重要通道，而南吕梁山隧道是山西中南部铁路中的一条特长隧道，隧道的成功贯通关系着整条铁路通道的顺利通车，南吕梁山隧道的质量与安全更应该符合它在整条铁路通道中的重要性。 南吕梁山隧道南吕梁山隧道位于山西省临汾市境内，隧道线路贯穿于南吕梁山山脉以东及临汾盆地边缘丘陵区。并且隧道所在地区的水文地质条件相当复杂，因此，隧道的每一个设计与施工都应该全面考虑。 隧道的洞门采用端墙式洞门，隧道的内轮廓线根据规范要求采用三弧拱曲墙式断面形式，隧道限界采用“隧限—2A”的要求设置。 隧道的开挖方法：Ⅱ、Ⅲ级围岩采用全断面开挖方法，并且采用光面爆破，这样可以使开挖面平整，防止超挖和欠挖，Ⅳ级围岩采用台阶法施工。 隧道的支护结构：预支护采用超前锚杆、超前导管、超前管棚支护来保证开挖面的稳定，保证施工安全。隧道的衬砌结构采用复合衬砌，初期支护采用锚杆、喷射混凝土和钢筋网联合支护，二次衬砌采用摸筑混凝土结构，设计采用结构力学计算方法进行计算，初期和二次支护共同组成隧道的永久支护结构。这种支护组合不仅利用了衬砌本身的作用，也充分利用了围岩本身的自承载能力，做到了安全、经济的效果。 隧道的通风采用了机械通风，保证了运营期间隧道内空气的流通，也保证了隧道内有害气体浓度复合要求。隧道的防排水采用防水层、排水沟、盲沟等共同组成隧道的防排水系统。 关键词：光面爆破；支护结构；结构力学计算方法；锚喷支护；通风；防排水。 Abstract Railway crossing of central and southern Shanxi Province is a important channel of shanxi’s coal slipping. luliang Shan tunnel is a long railway tunnel in Railway crossing of central and southern Shanxi Province. Tunnel through the success of the entire opening of the railway channel smooth. South luliang Shan tunnel should meet the quality and safety of its importance in the entire rail crossing. South luliang Shan tunnel is located in the territory of linfen city of Shanxi province, tunnel line throughout the South East of luliang Shan mountains and basin edge hills. And hydro - geological conditions of the location of the tunnel is quite complex, so every design and construction of the tunnel should be fully taken into account. The portal of the tunnel end - wall cave door, the tunnel of contour lines based on the specification requires a three - arch curved - wall sections, gauge of the tunnel tunnel -2A limit requirements set. Tunnel excavation methods : grade ⅱ, ⅲ surrounding rock adopt full face excavation method, and smooth - surface blasting, surface so that excavation, prevention of overbreak and less excavation, construction of grade ⅳ surrounding rock using step method. The support structure of the tunnel : pre - support using advanced anchors, advanced cat