| 基于土压盾构的城市地铁隧道构筑过程地表沉降规律 |
| |
| 引用本文： | 王晓睿,姜洪建,朱坤,张丰尧,刘晓南.基于土压盾构的城市地铁隧道构筑过程地表沉降规律[J].地球科学,2019,44(12):4293-4298. |
| |
| 作者姓名： | 王晓睿 姜洪建 朱坤 张丰尧 刘晓南 |
| |
| 作者单位： | 1.华北水利水电大学地球科学与工程学院, 河南郑州 450045 |
| |
| 基金项目： | 国家自然科学基金项目51879245河南省科技攻关项目182102210062 |
| |
| 摘 要： | 通过经验、理论分析和数值模拟等预测方法，并结合实测数据研究分析土压盾构施工引起的地表沉降问题.分析结果表明:预测方法估算的最大沉降值总高于实测的沉降值；Oteo方法的曲线形态更优化；当隧道埋深较浅时，Loganathan-Poulos、Sagaseta、Peck和Verruijt-Booker方法均过高估算了最大沉降量，且Loganathan-Poulos、Sagaseta和Verruijt-Booker方法给出的沉降槽偏宽；数值模拟方法比分析和经验方法更有效，可以有效模拟施工过程.根据研究结果，经验、理论分析和数值模拟方法具有一定的安全储备空间，可用于软土地层中土压盾构施工引起的地面沉降预测.
|
| 关 键 词： | 隧道工程 土压盾构 地表沉降 预测方法 数值模拟 岩土工程 |
| 收稿时间： | 2018-09-29 |
Research on Ground Settlement Laws of Urban Subway Tunnel Construction Process Based on Earth Pressure Shield |
| |
| Abstract: | Through the prediction methods such as experience, theoretical analysis and numerical simulation, combined with the measured data, the ground settlement caused by the earth pressure shield construction is analyzed. The analysis results show that the maximum settlement estimated by the prediction method is always higher than the measured settlement value; the curve shape of the Oteo method is more optimized; when the tunnel depth is shallow, the Loganathan-Poulos, Sagaseta, Peck and Verruijt-Booker methods all overestimate the maximum settlement, and the settling troughs given by the Loganathan-Poulos, Sagaseta and Verruijt-Booker methods are wide; the numerical simulation method, which is more effective than the analytical and empirical method, can simulate the construction process effectively. According to the research results, the experience, theoretical analysis and numerical simulation methods have a certain safety reserve space, and these three methords can be used for ground subsidence prediction caused by earth pressure shield construction in soft soil layer. |
| |
| Keywords: | |
|
| 点击此处可从《地球科学》浏览原始摘要信息 |
|
点击此处可从《地球科学》下载全文 |
|
