Buried pipeline removal method and buried pipeline removal device
AssigneeNippon Telegraph and Telephone Corporation
InventorsDaisaku NISHIYAMA, Kenji HIYOSHI, Koji ITASAKA, Akira ITO
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Abstract
Provided are an underground pipeline removal device and an underground pipeline removal method capable of selectively removing only unnecessary pipelines. The underground pipeline removal method includes an insertion process of inserting a cutting device into an embedded underground pipe 6 from the front side toward the back side of the underground pipe 6, a cutting process of spirally cutting the underground pipe 6 from the inside with the cutting device to form strip-like cut pieces, and a collection process of drawing out the cut piece from the front side to the outside through the inside of the underground pipe 6.
Claims16
A method for removing an underground pipeline, comprising:
- an insertion process of inserting a cutting device into a pipeline from a front side toward a back side of the pipeline;
- a cutting process of spirally cutting the pipeline from the inside with the cutting device to form cut pieces, wherein the cut pieces are in strip-like form;
- and
- a collection process of drawing out the cut pieces from the front side to an outside through an inside of the pipeline.
A device for removing an underground pipeline, comprising:
- a cutting device that is inserted into pipeline from a front side of the pipeline and cuts the pipeline spirally from the inside to form a strip-like cut piece;
- and
- a collection device that draws out the cut pieces from the front side to an outside through an inside of the pipeline.
Dependencies are inferred from the claim text.