公路黄土隧道初期支护结构侵限原因浅析  

Causes of Primary Support Intruding into Clearance in Loess Highway Tunnels

作　　者：辛国平[1] 

机构地区：[1]中铁隧道集团一处有限公司,重庆401121

出　　处：《现代隧道技术》2009年第3期33-37,共5页Modern Tunnelling Technology

摘　　要：文章针对高速公路隧道在黄土梁峁地区修建过程中发生较大变形、地表开裂等现象,结合隧道所穿越地层地质情况、隧道开挖情况、支护情况、监测情况等进行变形原因分析,并对黄土隧道的修建提出了几点建议。粉砂性黄土隧道在施工过程中一定要加强对水的处理,管理好施工用水,及时排出地下水,尽量减少地表水下渗及围岩的含水量。另外,合理、科学地安排各施工顺序,以及坚持全过程的监控量测工作也很重要。Large deformations and surface cracks occurred during the construction of expressway tunnels in loess hilly regions. In view of these phenomena the paper analyzes the causes for the deformations considering the geological formation of the tunnels, tunnel excavation methods, support and monitoring, etc., puts forward several suggestions.It emphasizes that in the course of silt loess tunnel construction water treatment should be enhanced and the water for construction should be managed very well. Moreover ground water should be drained in time to reduce the surface water seeping into surrounding rock. In addition it is also very important to have a scientific construction process and whole-course monitoring.

关 键 词：高速公路 黄土隧道 侵限 

分 类 号：U455.7[建筑科学—桥梁与隧道工程]