CAJ | 학술논문

本文基于乐园隧道富水破碎带施工技术为背景，主要研究了富水破碎隧道如何进行合理防排水和如何选择最优开挖方法。对于隧道防排水选择以“以堵为主、综合治理”为原则，通过超前地质预报探明掌子面前方富水破碎情况，对富水破碎带实施注浆进行防水，并于破碎带中线布置排水孔进行适当排水；通过非线性有限元软件ADINA分别对全断面法、台阶法和分部开挖法进行开挖模拟，对比分析不同开挖方法下的地层沉降、锚杆轴力变化等方面。结合数值模拟结果，考虑到各种开挖方法施工安全性与对掌子面稳定性影响，乐园隧道围岩破碎带采用台阶法施工实际意义最大。
본문기우악완수도부수파쇄대시공기술위배경，주요연구료부수파쇄수도여하진행합리방배수화여하선택최우개알방법。대우수도방배수선택이“이도위주、종합치리”위원칙，통과초전지질예보탐명장자면전방부수파쇄정황，대부수파쇄대실시주장진행방수，병우파쇄대중선포치배수공진행괄당배수；통과비선성유한원연건ADINA분별대전단면법、태계법화분부개알법진행개알모의，대비분석불동개알방법하적지층침강、묘간축력변화등방면。결합수치모의결과，고필도각충개알방법시공안전성여대장자면은정성영향，악완수도위암파쇄대채용태계법시공실제의의최대。
Based on the case project of Leyuan tunnel, we studyed how to select the reasonable measure of waterproof and drainage and the optimal excavation method of tunnel when the surrounding rock broken and the water rich;“Plugging dominantly and treating synthetically” is chose to be the principle to the waterproof and drainage of tunnel. Proving the situation of water rich and broken of surrounding rock in front of the tunnel face through geological forecast, and then proceeding pouring to the disease area. In addition, decorating some drainage holes in the middle of the disease area to let out some water;Simulating the excavation of tunnel by the method of entire section method, bench method and partial excavation method through the nonlinear finite element software ADINA. Analysis of subsidence of strata and bolt axial force in different working conditions.In combination with the result of numerical analysis, and considering the security of working and the influence to the stability of tunnel face ,the most meaningful working condition to the surrounding rock which is broken is bench method.