Water inclined rock surface in a complex large-diameter bored piles method

The present invention relates to a complex of large diameter inclined rock surface waters pile, including drilling platforms, steel pipe piles, steel casing, bored pile, steel pipe pile is provided on the inclined surface of the rock, and the top of the borehole internet connection, the bottom portion, and a separate outer balloon ballast plate; a limiting plate and steel pipe and the same outer diameter circular notches on drilling platforms, steel casing through the circular slot extending into inclined rock surface; drilling platform connected to the lower I-shaped steel pipe pile by steel beam; steel casing comprises a casing and a secondary raw follow casing, through both stiffening plate is welded and fixed, the inner wall of the second casing to follow with stopper; inner steel casing reinforcement cage is provided, formed by a bored pile concreting. The present invention effectively solves the inclined rock surface in deep water drilling shallow overburden layer pile construction problems, and significantly reduce the amount of steel compared to the case of steel sleeve cofferdam construction, construction cost and construction time savings, high safety factor.