齐岳山高风险隧道施工技术

Construction Technology for High Risky Qiyueshan Tunnel

研究目的:齐岳山隧道是宜万铁路8座Ⅰ级高风险隧道之一,地质条件复杂,不良地质多,施工风险大。如何有效的防范和规避施工高风险,化解不良地质灾害,保证施工安全和工程质量,是摆在施工者面前的首要课题。研究结论:高风险隧道施工要准确科学划分地质风险级别,做好超前地质预报、围岩监控量测和防灾报警措施,紧紧围绕易发不良地质灾害风险组织施工,选择有针对性的围岩预加固、开挖、支护、二衬施工方案和技术措施,可以有效地防范和规避施工高风险。

Research purposes： Qiyueshan Tunnel is one of 8 grade one high risky tunnels on Yichang - Wanzhou Railway with complicated unfavorable geological conditions and high constructional risk. How to prevent and avoid high constructional risk and how to eliminate the unfavorable geological disaster are the key factors of ensuring construction security and quality. Research conclusions：For prevention of and avoiding high constructional risk in construction of high risky tunnel, the geological risky grade should be classified, the geological forecast in advance, measurement and control of wall rock and measures for alarm of prevention of disaster should be conducted well, more attention should be paid to the construction organization in unfavorable geological zone and the suitable construction program and measures should be adopted and taken, including reinforcement, excavation, support and lining of the wall rock in advance.