摘要
为解决CRD法运用于大断面隧道时存在临时支撑工程量大的问题,通过优化传统管棚注浆法和传统三台阶开挖法,提出双层大倾角管棚注浆+上台阶CD法这种新的掌子面开挖施工方法。并通过数值模拟和现场监测等手段对2种施工方案进行对比分析。研究结果表明:双层大倾角管棚注浆+上台阶CD法能安全替换传统CRD法,并适用于埋深深、断面大、强富水和弱围岩段施工。该施工方法在保证施工安全的前提下,能够极大地提高施工效率和经济效益。
Since there are many defects in the application of CRD method to large-section tunnels,this paper proposes a new construction method,which can better solve the problem of large amount of temporary support engineering of CRD method.By optimizing the traditional pipe shed grouting method and the traditional three-bench construction method,the construction efficiency and economic benefit can be greatly improved under the premise of ensuring construction safety.By means of numerical simulation and field monitoring,this paper proves that the new construction method can safely replace the traditional CRD method,and is suitable for the construction of deep buried section,large section,strong water rich and weak surrounding rock section,and its advantages are very obvious,worthy of promotion.
作者
李维瑞
张玉芳
李健
万军利
王臣
马贤杰
LI Weirui;ZHANG Yufang;LI Jian;WAN Junli;WANG Chen;MA Xianjie(China Rail Way Construction Yunnan Traffic Construction Management Co.,Ltd.,Kunming Yunnan 650000,China;China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2022年第S01期128-134,共7页
Journal of Safety Science and Technology
基金
云南省交通科技项目(云交科教便[2020]50号)
关键词
隧道工程
涌水突泥
CRD法
管棚注浆
三台阶法
tunneling engineering
CRD excavation method
water and mud
shed-pipe grouting
three-bench construction method
