摘要
随着近年来南水北调和生态补水的开展,北京市的地下水位逐年上涨,既有地铁运营线路地下结构渗漏现象显著增多。本文以北京西部某地铁明挖四线大断面区间渗漏治理实施为例,系统研究了地下水位上升条件下地铁明挖大断面隧道渗漏病害系统性治理思路及技术路线。基于对地下结构检测的基础上,通过对变形缝背后土体进行改良,减小渗透系数,对变形缝自身渗漏进行修复,对结构大面积渗漏进行治理。可以有效提高地下水位上升条件下地铁车站渗漏治理的耐久性。研究结果可为类似工况下的隧道及地下结构渗漏治理提供理论和方法借鉴。
With the development of the South to North Water Diversion Project and ecological water replen-ishment in recent years,the groundwater level in Beijing has been rising year by year,and the phenomenon of underground structure leakage in existing subway operating lines has significantly increased.This article takes the implementation of leakage control in a large-section interval of a certain subway in western Beijing as an ex-ample,and systematically studies the systematic treatment ideas and technical routes for leakage diseases in sub-way open cut large-section tunnels under the condition of rising groundwater level.Based on the detection of un-derground structures,the soil behind the deformation joint is improved to reduce the permeability coefficient,repair the leakage of the deformation joint itself,and control the large-scale leakage of the structure.This meas-ure would effectively improve the durability of subway station leakage control under the condition of rising groundwater level.The results would provide theoretical and methodological references for the treatment of leak-age in tunnels and underground structures under similar working conditions.
作者
孙立柱
段苒
侯宇迪
姜曦
张召
张韶文
Sun Lizhu;Duan Ran;Hou Yudi;Jiang Xi;Zhang Zhao;Zhang Shaowen(Beijing General Municipal Engineering Design&Research Institute Co.,Ltd.,100082,China)
出处
《特种结构》
2025年第6期7-12,共6页
Special Structures
关键词
水位上升
土体改良
渗漏治理
Rising water level
Soil improvement
Leakage control
