| 富水砂卵石地层中新建隧道下穿既有隧道注浆加固范围 |
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| 引用本文： | 陈城,彭丽云,乔红军,李广兵.富水砂卵石地层中新建隧道下穿既有隧道注浆加固范围[J].铁道建筑,2019(5):77-80. |
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| 作者姓名： | 陈城 彭丽云 乔红军 李广兵 |
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| 作者单位： | 北京建筑大学土木与交通工程学院;中铁第五勘察设计院集团有限公司 |
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| 基金项目： | 国家自然科学基金(41772291);北京建筑大学市属高校基本科研业务费资助项目(Y1827) |
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| 摘 要： | 北京新建地铁8号线木樨园桥南站—大红门站区间隧道下穿地铁10号线大红门站—石榴庄站区间隧道。本文首先采用FLAC 3D软件对原有注浆加固条件下隧道开挖进行数值模拟,将模拟结果与实际监测数据进行对比,验证了数值模拟的可行性;然后在不同水位条件下对原注浆方案进行了数值模拟,发现原注浆方案已经不适用于水位上升的情况,继而对注浆加固范围进行了优化,使既有隧道的沉降满足规范要求。
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| 关 键 词： | 地铁 注浆加固范围 数值模拟 地下水 沉降 |
Grouting Reinforcement Range of New Tunnel Under-crossing Existing Tunnel in Water-rich Sandy Gravel Stratum |
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| CHEN Cheng,PENG Liyun,QIAO Hongjun,LI Guangbing.Grouting Reinforcement Range of New Tunnel Under-crossing Existing Tunnel in Water-rich Sandy Gravel Stratum[J].Railway Engineering,2019(5):77-80. |
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| Authors: | CHEN Cheng PENG Liyun QIAO Hongjun LI Guangbing |
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| Institution: | (School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;China Railway Fifth Survey and Design Institute Group Co.Ltd.,Beijing 102600,China) |
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| Abstract: | The interval tunnel between Muxiyuan Bridge South Station and Dahongmen Station in Beijing New Metro Line 8 under-crosses the interval tunnel between Dahongmen Station and Shiliuzhuang Station in Beijing Metro Line 10.This paper used FLAC 3D software to simulate the tunnel excavation under the original grouting reinforcement condition and compared the simulation results with the actual monitoring data to verify the feasibility of the numerical simulation.Then the original grouting scheme was simulated under different water level conditions.It is found that the original grouting scheme is no longer suitable for the situation of water level rising,and the scope of grouting reinforcement was optimized to make the settlement of existing tunnels meet the requirements of specif ications . |
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| Keywords: | Subway Scope of grouting reinforcement Numerical simulation Groundwater Settlement |
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