摘要
盾构穿越砂卵石复合地层一直是一项风险较高的工程,而常规的地勘方法很难提供精准且全面的区域地质信息。依托地铁盾构工程,在前期地勘中应用新型微动探测技术,针对城市重干扰环境中的微动数据采集、处理分析、地质解释等一系列环节进行研究改进,以获取区域连续高精度地层剖面图,识别存在地质隐患的多个点位,并经地质钻探验证,实现了较高精度预测。在降低盾构施工风险、为同类工程项目提供有益借鉴的同时,以微动探测成果为基础,对地质高危区进行相应的预处理,取得了较好的工程效果。
Shield tunneling through sandy cobble composite stratum has always been a high-risk project,and conventional geological prospecting methods are difficult to provide accurate and comprehensive regional geological information.Based on the subway shield project,a new type of micromotion detection technology is applied in the early geological exploration,and a series of steps such as micromotion data collection,processing and analysis,and geological interpretation in the urban heavy disturbance environment are studied and improved,so as to obtain continuous high-precision stratigraphic profile of the region,identify multiple points with geological hazards,and achieve a relatively high-precision prediction through geological drilling verification.In order to reduce the risk of shield construction and provide useful reference for similar projects,based on the results of micro-motion detection,the corresponding pre-treatment of geological high-risk areas has achieved good engineering results.
作者
张雯
张磊
朱尚明
ZHANG Wen;ZHANG Lei;ZHU Shangming(China Renewable Energy Engineering Institute,Beijing 100070,China;Yangtze Ecological Environmental Protection Group Co.,Ltd,Wuhan Hubei 430014,China;China Power Construction Railway Investment Group Co.,Ltd,Beijing 100070,China)
出处
《兰州工业学院学报》
2023年第6期74-79,共6页
Journal of Lanzhou Institute of Technology
基金
国家重点研发计划课题项目(2022YFB2602101)。
关键词
微动探测
砂卵石复合地层
盾构隧道
micromotion
sandy cobble composite stratum
shield tunnel
