大瑞铁路大柱山隧道高压富水断层处理技术  

Construction Technology for the Dazhushan Tunnel in a High-Pressure Fault with Abundant Water

作　　者：张金夫[1] 汶文钊[1] ZHANG Jinfu;WEN Wenzhao(China Railway First Group Co. Ltd., Xi＇an 710054)

机构地区：[1]中铁一局集团有限公司,西安710054

出　　处：《现代隧道技术》2018年第3期160-166,共7页Modern Tunnelling Technology

摘　　要：大理—瑞丽铁路大保段大柱山隧道地质构造复杂,断层密集,岩性繁多,软弱破碎,岩溶发育,高压富水,地下水压力最高达3 MPa。在平导施工穿越燕子窝断层时发生了严重的突泥涌水事件。针对富水高压断层处理问题,文章开展了注浆加固堵水技术研究,在反复试验的基础上探索总结出了高压动水分段引排、超高压聚合注浆施工技术,并详细阐述了注浆加固技术方案、施工设备配置、关键工艺参数以及施工组织管理要点等,对类似工程具有良好的借鉴意义。The Dazhushan tunnel of Dali-Ruili railway is located in an area with complex geological structures,dense faults, various lithologies, fractured soft rock, developed karst and an underground water pressure of up to3 MPa. Serious mud bursts and water inflow occured during the construction of the parallel adit passing through theYanziwo fault. The water-stopping technique of grouting reinforcement is studied in light of this high-pressure faultwith abundant water; sectional water drainage for moving water and polymerized grouting with super high pressureare presented; and the key points of the grouting reinforcement scheme, construction equipment configuration, criti-cal technology parameters and construction organization are described in detail.

关 键 词：铁路隧道 高压富水断层 帷幕注浆 水平旋喷桩 分段引排注浆 

分 类 号：U455.49[建筑科学—桥梁与隧道工程]