无水砂卵石地层盾构施工下穿建筑物风险分析与控制

Risk Analysis and Control of Shield Construction under Buildings in Anhydrous Sandy Pebble Stratum

目前地下掘进技术已取得显著发展,盾构法也被运用在众多城市地铁隧道施工中。地铁隧道往往建设在城市中建筑物高度集中的地段,施工过程必然会引起对邻近建筑物的影响。而这一影响在无水砂卵石地层的隧道施工中更为明显,建筑物有开裂、变形的风险。本文对无水砂卵石地层盾构施工下穿建(构)筑物的风险进行分析,并介绍相应控制措施。

At present, the underground tunneling technology has made remarkable development, and the shield method has also been used in the construction of many urban subway tunnels. Subway tunnels are often built in areas where buildings are highly concentrated in cities, and the construction process will inevitably have an impact on adjacent buildings. This effect is more obvious in tunnel construction in anhydrous sandy pebble stratum, and the buildings have the risk of cracking and deformation. This paper analyzes the risk of shield construction under buildings (structures) in anhydrous sandy pebble stratum, and introduces the corresponding control measures.