西安地铁八号线地裂缝隧道暗挖施工技术与沉降控制措施研究  

Research on Construction Technology and Settlement Control Measures of Underground Crack Tunnel in Xi'an Metro Line 8

作　　者：史治文 SHI Zhiwen(th Engineering Bureau Group Engineering Co.,Ltd.,Zhengzhou 072750,China)

机构地区：[1]中铁十八局集团第三工程有限公司,郑州072750

出　　处：《结构工程师》2024年第5期137-142,共6页Structural Engineers

摘　　要：我国西北地区地裂缝发育程度较高,给隧道建设带来了较大的挑战。本文以西安地铁8号下穿地裂缝为背景,采用数值模拟的方法研究了地裂缝对隧道拱顶沉降速率和最终沉降值的影响,以及地基加固法在加固地裂缝场地中的应用。研究表明,地裂缝附近是影响隧道拱顶沉降最大的区域,采用地基加固法能够有效提高地基土体的承载能力,尤其对于浅埋隧道和较大洞径隧道采用地基加固法效果更佳,能够较好地保证隧道施工的安全。The development of ground fissures in the northwest region of China is relatively high,which poses significant challenges to tunnel construction.This paper takes the Xi'an Metro No.8 underpass ground crack as the background,and uses numerical simulation methods to study and introduce the influence of ground cracks on the settlement rate and final settlement value of tunnel arches,as well as the application of foundation reinforcement method in strengthening ground crack sites.Research has shown that the area near ground fissures has the greatest impact on the settlement of tunnel arches.The use of foundation reinforcement methods can effectively improve the bearing capacity of the foundation soil and ensure the safety of tunnel construction.In addition,for the reinforcement process of shallow buried tunnels and larger tunnel diameters,the use of foundation reinforcement method is more effective and can better ensure the safety of tunnel construction.

关 键 词：盾构 地裂缝 沉降 因素 加固措施 

分 类 号：U231.3[交通运输工程—道路与铁道工程] U455.4[建筑科学—桥梁与隧道工程]