地铁隧道岩溶区处理方案及工程实践  

Engineering Practice of Metro Tunnel Construction in Karst Area

作　　者：张巍 ZHANG Wei(Shenzhen Longgang Geological Exploration Bureau,Shenzhen 518172;Shenzhen Comprehensive Geotechnical Engineering Investigation&Design Co.Ltd.,Shenzhen 518172)

机构地区：[1]深圳市龙岗地质勘查局,广东深圳518172 [2]深圳市岩土综合勘察设计有限公司,广东深圳518172

出　　处：《土工基础》2021年第4期438-440,448,共4页Soil Engineering and Foundation

摘　　要：长期以来地下隧道穿越岩溶地区是公、铁路隧道工程施工的难题,为了探索隧道穿越岩溶发育地区解决办法,以深圳地铁16号线某区间段岩溶勘察、设计、施工为研究对象,结合现场勘查溶洞大小、水平和竖向分布规律、发育和填充物的特点,提出了压力注浆法、填充法及填充法与压力注浆相结合的处理方案。通过工程实例验证溶洞加固处理效果显示,地铁16号线某区间段岩溶区采用压力注浆法、充填法或换填法与压力注浆相结合的溶洞加固处理方法分类处理后,经综合物探技术及钻芯法取样检验合格,为类似隧道穿越岩溶处理方案及施工提供借鉴。Long tunnels through the karst terrain are the challenge area in the railway and highway tunnel construction.To explore solutions for the tunnel through the well-developed karst area,this paper elects a case history of geotechnical investigation,design construction in karst terrain of a segment of the Shenzhen Metro Line No.16 project.Mitigation method was based on the site specific conditions,such as,horizontal and vertical distributions of karst rock cavities and their sizes,karst feature development as well as the characterization of the filling materials,and the compaction grouting method,permeating grouting and the combination of compaction grouting and filling grouting method were selected for the karst mitigation.The satisfactory mitigation results were verified by integrated geophysical methods as well as the coring method.

关 键 词：隐伏型岩溶 压力注浆法 充填法 综合物探技术 钻芯法 

分 类 号：U456[建筑科学—桥梁与隧道工程]