Lined prestressed concrete cylinder pipe hole opening method and apparatus

The present invention relates to an auxiliary opening device underground pipe network, in particular a steel cylinder lined prestressed concrete tube aperture means, comprising a tube coated on the circumferential surface of the concrete construction of the base rubber, and the hoop with the hoop disposed outside the base rubber, and hoop by bolts and nuts on the hoop hoop, the hoop interlocked fixing, the manifold assembly defines a through hole disposed on the upper hoop, and the is provided between the manifold assembly and the bottom surface of the concrete pipe seals, water-swellable rubber, on the hoop pressure plate through hole edge weld, bolts screwed on said platen and the lower bolts manifold assembly pressed and fixed. With this opening means for opening when needed a temporary lining prestressed concrete cylinder pipe, without changing the original conduit, the openings can be implemented directly in the original pipe, both to ensure the safety of the pipeline, but also saves human and material resources, with good economic returns.