铁矿软弱地层巷道快速安全施工关键技术研究——“浅埋暗挖”技术的应用新进展  

Research on key technology of fast safety construction for iron ore soft layers——new development of shallow tunneling method

作　　者：王永红[1] 齐文彪[2] 

机构地区：[1]北京交通大学隧道与地下工程教育部工程研究中心,北京100044 [2]吉林省水利水电勘测设计研究院,长春130021

出　　处：《岩土力学》2013年第2期417-425,共9页Rock and Soil Mechanics

基　　金：科技部国际合作项目(No.C09B400010);北京市自然基金资助项目(No.C09E300020);国家重点基础研究发展计划(973)项目(No.2009CB100021);中央高校基本科研业务费专项资金资助(No.2011JBZ008)

摘　　要：针对复杂条件下的铁矿含水软弱破碎地段巷道施工难点,首次应用"浅埋暗挖"技术,采用理论分析、室内试验、数值模拟和现场试验等进行综合研究,形成了对铁矿软弱破碎地层稳定性特点和地下巷道施工关键技术的系统认识,取得了一系列研究成果,形成了一整套安全、快速和稳定穿越铁矿含水软弱破碎地层的施工技术。关键技术是设计合理的隧道断面,进行科学的支护结构设计,应用主动式一次性永久支护取代被动式二次模筑衬砌,选择优化的支护参数,采用正确的开挖方法和应用信息化施工等。应用效果表明,该技术有效地解决了工程难题,保证了安全生产,取得了显著的经济和社会效益。For the iron ore which is full of water and weak broken sections in complex environment,various methods,such as the thoretical analysis,laboratory research,numerical simulation and field experiment are firstly used to conduct the comprehensive research and to form a deep cognition about stability characteristics of the weak and gravelly ground of the iron ore and the key technology of tunnel construction;a whole set of construction technology that safely,rapidly and safely passing through the iron designing ore which is full of water and weak broken sections is formed.The key technology mainly includes reasonable cross-sections,scientific design of supporting structure,adopting active permanent support instead of passive two linings,selecting of optimum support parameters,the correct method of excavation,and informatization construction,etc.The application demonstrates that the key technology can solve the engineering problems effectively and ensure the safe construction;and it has significant advantage of economic benefit and social effect.

关 键 词：软弱地层 快速施工 优化 浅埋暗挖 

分 类 号：TD263[矿业工程—矿井建设]