地铁隧道近距离下穿既有地铁站变形规律和安全控制研究

摘要

以深圳地铁7号线实际施工为背景,重点研究地铁区间隧道近距离下穿既有地铁站的安全控制技术,用数值计算分析模拟实际工程近况,并根据工程地质情况,对照监测数据分析结果,提出全断面注浆的时空效应下,应注意注浆加固区域隆起,及时对施工过程进行调整,保证注浆过程中的施工安全.%Based on the line 7 of Shenzhen metro project,it focuses on the safety control technology for the construction one subway tunnel beneath existing subway station in short distance.Using numerical calculation to analyze and simulate the actual engineering situation.According to the engineering geological conditions,by comparing the results of the monitoring data analysis,this paper proposed the time-space effects of the full-sectional grouting.Much attention should be paid to the uplift of grouting reinforcing area.Adjusting the construction process timely can ensure construction safety in the process of grouting.