摘要
岩溶是山岭隧道施工过程中最常见的地质灾害之一,其极易因不同位置、不同规模的溶洞而影响隧道整体稳定性,导致隧道支护结构开裂、渗漏水等病害。为深入研究岩溶的超前探测技术及其对隧道结构稳定性的影响规律,结合丁家湾隧道的工程实例,全面分析其工程特性,利用地质雷达对掌子面前方溶洞情况进行精准探测,并利用数值模拟手段对不同工况下溶洞对隧道整体应力分布情况的影响进行研究。研究成果为岩溶隧道灾害处治提供了技术支撑。
The karst is one of the most common geological disasters in mountain tunnel construction,and the karst caves with different locations and sizes could affect the overall stability of the tunnel,resulting in diseases such as cracks of tunnel supporting structure and water seepage.In order to study the karst advanced detection technology and its influence on the tunnel structure stability in depth,based on the actual project of Dingjiawan Tunnel,this paper comprehensively analyzed its engineering characteristics,and used geological radar to accurately detect the detail of the karst cave in front of the tunnel face.Adopting the numerical simulation to research the influence of the karst cave on the overall stress distribution of the tunnel under different working conditions.The research results can provide technical support for the treatment of karst tunnel disasters.
作者
罗爱军
LUO Ai-jun(The Seventh Engineering Co.,Ltd.of Shanxi Road&Bridge Construction Group,Jincheng,Shanxi 048000,China)
出处
《山西交通科技》
2022年第1期85-88,共4页
Shanxi Science & Technology of Transportation
关键词
岩溶隧道
超前探测
稳定性
数值模拟
karst tunnel
advanced detection
stability
numerical simulation
