日本大阪市东大和川右岸的龟濑滑坡,滑面发生在新、旧多洛可罗火山岩交界面处,深度厚达60m。整治工程采用挖孔抗滑桩,桩径6.5m,深100m,共9根。 深桩施工时,为了适应地质变化以确保安全,在开挖、支护交替施工中采用了短循环工法。自孔口开挖1.5m支护后,之后每挖1m支护一次。 The Kameyama Landslide on the east bank of Todagawa River in Osaka City, Japan. The slippage occurred at the interface between the Neo- and Dolokoku volcanic rocks, with a depth of 60m. The digging anti-slide piles were used in the renovation project, with a pile diameter of 6.5m and a depth of 100m, for a total of nine. In the construction of deep piles, in order to adapt to geological changes to ensure safety, a short-cycle construction method was adopted in the alternate construction of excavation and support. After the 1.5m support is excavated from the hole, it is supported once every 1m.