摘要
岩石隧道掘进机(Tunnel Boring Machine,TBM)凭借其高效优质、作业安全等特点在铁路、公路、地铁、水利水电等领域广泛应用,在普通地质环境下推广顺利.复杂地质环境下致灾源多,如硬岩岩爆、软岩大变形、断层破碎带、涌水突泥等不良地质使TBM施工频繁出现围岩坍塌、支护失效、卡机淹井、设备损伤等问题.本文结合工程案例,从超前主动加固、注浆及锚固、管片支护、撑靴加固4个方面总结现有施工技术,以应对TBM穿越不良地质导致的刀盘卡机、护盾抱死、初期支护变形过大、撑靴打滑等问题,提升TBM在不良地质环境下的适应能力,为类似工程提供参考.
Abstract
Tunnel boring machine(TBM)excavation technology,with its characteristics of high efficiency and quality,as well as operational safety,is widely applied in various fields such as railways,highways,subways,water projects,and has been successfully promoted in general geological environments.Greater catastrophic potential,adverse geological conditions such as hard rock bursting,soft rock deformation,fault fragmentation zones and sudden mud inflows often lead to frequent problems in TBM construction,including surrounding rock collapses,support failures,machine jams,well flooding,and equipment damage.This paper summarizes existing construction technologies from four aspects,advanced active reinforcement technology,grouting and anchoring technology,segment support technology and reinforcement of weak surrounding rock through the use of boots and post-support.The aims to address issues such as cutterhead jams,shield grip failures,significant initial support deformations and slip of the supporting boots caused by adverse geological conditions.The goal is to enhance the TBM crossing ability in unfavorable geological environments,and increase TBM utilization rates and provide reference for similar projects.
基金项目
云南省科技厅科技项目(202303AA080005)
维普
万方数据