城市轨道交通穿越交城活动断裂力学性质研究
Investigation of mechanical properties of urban rail transit through Jiaocheng fault zone
郭文远 1谢霖 1陶连金 2李栋 3裴保国 3赵金贵 4刘华南1
作者信息
- 1. 北京城建勘测设计研究院有限责任公司,北京 100101
- 2. 北京工业大学城市与工程安全减灾教育部重点实验室,北京 100124
- 3. 太原轨道交通集团有限公司,太原 030032
- 4. 太原理工大学矿业工程学院,太原 030600
- 折叠
摘要
依托太原市城市轨道交通 1 号线一期工程金阳路站-小井峪站区间穿越交城断裂工程,采用浅层地震勘探、钻孔联合剖面探测、探槽开挖和地质调查相结合的技术手段,探究金阳路站"一"小井峪站区间内交城断裂带位置及断层力学性质特性.结果表明:交城断裂是具有发震断裂的性质的强烈全新活动正断层;金阳路站～小井峪站区间隧道主要穿越交城断裂F1-1和F1-2分支,且F1-2分支断裂具有强烈的活动迹象,产生的地裂缝导致地表结构出现不同程度破坏;岩芯样中存在不整合接触、擦痕及液化脉体等变形构造表明交城断裂的存在;交城断裂带断层产状位置等断层力学性质的分析可为轨道交通 1 号线设计和施工时防灾减灾技术的确定提供数据支撑.
Abstract
This paper aims to explore and ascertain the location of Jiaocheng fault zone and the me-chanical properties of the faults in the area between Jinyang Road Station and Xiaojingyu Station,based on the Phase I Project of Taiyuan City Railway Line 1 in Taiyuan City traversing Jiaocheng fault zong en-gineering between the sections from Jinyang Station to Xiaojing Station,by employing a combination of technical means of shallow seismic exploration,combined borehole profiling,trenching and geological in-vestigation.The results show that the Jiaocheng Fault is a strong new active fault with the nature of seis-mic rupture.The tunnel between Jinyang Road Station and Xiaojingyu Station mainly crosses the F1-1 and F1-2 branches of the Jiaocheng fault,and the F1-2 branch rupture shows strong signs of activity,and the resulting ground fracture causes varying degrees of damage to the surface structure.There are some de-formation structures like unconformity contacts,scrapes and liquefied veins in the core samples showing the existence of Jiaocheng fault.The analysis of the mechanical properties of the fault,including the loca-tion of fault production in the Jiaocheng fault zone,can provide data support for disaster prevention and reduction in the design and construction of Rail Transit Line No.1.
关键词
交城断裂带/浅层地震勘探/探槽开挖/正断层Key words
jiaocheng fault zone/shallow seismic survey/trenching/normal fault引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据