盾构工程在岩溶发育区的综合技术与实践

论述在岩溶发育区盾构施工需考虑突水、地表塌陷、岩溶顶板塌陷、盾构机体下垂等风险。在运营期间,车辆振动可能引发地表塌陷、管片下方溶土洞坍塌,导致车辆运行存在风险。广州地铁在岩溶发育区的多条线路采用盾构施工,大多于2010年底投入运营。结合岩溶发育区盾构工程实践,总结、思考广州地铁在勘察—设计—施工建设全过程的综合处理技术。

Systematic Technology and Practice for Shield Driving in Karst-developed Area

In the region of karst-developed area shield driving will encounter the risks such as water outburst,ground settlement,karst roof collapse,machine body settlement etc. During the operation period,vibration of vehicles may induce surface settlements and collapse under segments,and as a result,operation will face risks. Several lines in the region of karst-developed area of Guangzhou metro were built by shields,most of which have commissioned before the end of 2010. Accounting for the practice of shield const...