The invention relates to a compound reinforcing
soil structure with a soft soil shield penetrating through an existing subway. The structure includes a shield tunnel
contour line,
pipe sheds adjustable in angle and horizontal rotary spraying piles; a row of the
pipe sheds adjustable in angle are arranged at the outer side of the shield tunnel
contour line to be dug, each
pipe shed adjustable in angle includes a pipe shed
steel tube, each horizontal rotary spraying
pile is arranged between every two adjacent pipe shed steel tubes, and each horizontal rotary spraying
pile can wrap the corresponding pipe shed adjustable in angle and is meshed with the corresponding adjacent horizontal rotary spraying
pile; each horizontal rotary spraying pile includes a rotary spraying
drill pipe and a drillpipe casing, and the pipe shed steel tubes are connected with the rotary spraying
drill pipes. The compound reinforcing
soil structure has the advantages that through
combined use of the pipe sheds adjustable in angle and the horizontal rotary spraying piles, the combination of rigidity and flexibility is achieved, both hard and soft tactics are used, not only can the advantages of each componentbe fully exerted, but also
cooperative work can be well completed, a great overall supporting and protection effect is achieved, the structure can well adapt to the environment of a soft soil area, the soil is reinforced, and the deformation of the existing subway can be well controlled.