短台阶预留核心土法在下穿水库采空区隧道开挖中的应用  

The Application of Short Bench Reserved Core Soil Method in Tunnel Excavation Undercrossing Reservoir Goaf

作　　者：刘培全 LIU Peiquan(China Railway 12th Bureau Group Second Engineering Co.,Ltd.,Taiyuan 030000,Shanxi,China)

机构地区：[1]中铁十二局集团第二工程有限公司,山西太原030000

出　　处：《工程技术研究》2024年第18期34-36,共3页Engineering and Technological Research

摘　　要：为保证下穿水库采空区隧道开挖施工的安全性和围岩稳定性,文章以实际工程为例,研究短台阶预留核心土法在下穿水库采空区隧道开挖施工中的应用。具体而言,结合工程的实际情况及施工难点,确定短台阶预留核心土法的隧道开挖施工流程,并选择合适的施工设备进完成隧道开挖施工。对施工结果进行监测分析后得出:各监测点的结果均满足工程相关标准,安全度均大于1,位移均小于30 mm。In order to ensure the safety and stability of the surrounding rocks in the excavation construction of the tunnel undercrossing the reservoir goaf,this paper takes the actual engineering as an example to study the application of the short bench reserved core soil method in the tunnel excavation construction undercrossing the reservoir goaf.Specifically,combined with the actual situation and construction difficulties of the engineering,the tunnel excavation construction process by the short bench reserved core soil method is determined,and the appropriate construction equipment is selected to complete the tunnel excavation construction.After monitoring and analyzing the construction results,it is concluded that the results of each monitoring point meet the relevant standards of the engineering,the safety degree is above 1,and the displacement is less than 30 mm.

关 键 词：短台阶 预留核心土法 下穿水库 采空区 隧道开挖 

分 类 号：U455[建筑科学—桥梁与隧道工程]