초록 ▼

A block unit for repairing flow passage facilities is provided for permitting a desired repair operation. A method of repairing flow passage facilities using the block unit is also provided. The block unit includes an inner plate defining an inner surface, an outer plate disposed along a peripheral

A block unit for repairing flow passage facilities is provided for permitting a desired repair operation. A method of repairing flow passage facilities using the block unit is also provided. The block unit includes an inner plate defining an inner surface, an outer plate disposed along a peripheral edge of the inner plate, and a plurality of reinforcing ribs for reinforcing the inner plate and the outer plate. The block units adjoining in a circumferential direction are joined together with bolts inserted through both circumferential end faces of each the block unit and nuts fitted on the bolts to form a short tube within a flow passage. The short tubes are connected in a longitudinal direction to form a continuous tubular assembly having an outer diameter smaller than an inner diameter of the flow passage. A grout material is injected into a clearance space formed between the tubular assembly and the flow passage.

대표청구항 ▼

What is claimed is: 1. A block unit for repairing a flow passage facility comprising an inner plate defining an inner surface of said block unit, said inner surface being exposed to sewage, an outer plate disposed along a peripheral edge of said inner plate, and a plurality of reinforcing ribs for

What is claimed is: 1. A block unit for repairing a flow passage facility comprising an inner plate defining an inner surface of said block unit, said inner surface being exposed to sewage, an outer plate disposed along a peripheral edge of said inner plate, and a plurality of reinforcing ribs for reinforcing said inner plate and said outer plate, said inner plate, said outer plate, and said plurality of reinforcing ribs being unitarily formed as said block unit, said unitarily formed block unit being configured to assemble with additional unitarily formed block units to form a tubular assembly that remains part of said flow passage facility. 2. The block unit according to claim 1, wherein said inner plate, said outer plate and said reinforcing ribs are formed with a plastic material. 3. The block unit according to claim 2, wherein said plastic material is transparent or translucent. 4. The block unit according to claim 1, wherein said outer plate and said reinforcing ribs define bolt throughholes. 5. A block unit for repairing a flow passage facility comprising an inner plate defining an inner surface, an outer plate disposed along a peripheral edge of said inner plate, and a plurality of reinforcing ribs for reinforcing said inner plate and said outer plate, said block unit being configured to assemble with other block units so as to form a tubular assembly, said block unit having a circumferential dimension larger than a width dimension, said block unit defining an opening to allow grout material to be injected from an inner-surface side of the block unit, through said outer plate, into a clearance space, which is formed between said tubular assembly and said flow passage facility, to fix said tubular assembly to said flow passage facility as part of said flow passage facility. 6. A tubular assembly for repairing a flow passage facility comprising a plurality of short tubes assembled in a longitudinal direction with each other to remain as part of said flow passage facility, each one of the short tubes comprising a plurality of unitarily funned block units connected in a circumferential direction with one another at circumferential ends of said block units, at least one of the block units comprising an inner plate defining an inner surface of said block unit, said inner surface being exposed to sewage, an outer plate disposed along a peripheral edge of said inner plate, and a plurality of reinforcing ribs for reinforcing said inner plate and said outer plate, wherein said inner plate, said outer plate, and said reinforcing ribs are unitarily formed as said block unit, said block unit being configured to connect to additional block units in a circumferential direction to form said short tube. 7. The tubular assembly according to claim 6 comprising a pair of the outer plates opposed to each other, and a length of the inner plate in the circumferential direction being larger than a length between the outer plates. 8. A method of repairing a flow passage facility using a plurality of block units, said block units being assembled into a tubular assembly, said block unit incorporating at least an inner plate defining an inner surface, and an outer plate disposed along a peripheral edge of said inner plate, said method comprising joining the block units adjoining in a circumferential direction to form a short tube within said flow passage facility such that said inner surface of said inner plate is exposed to sewage after said flow passage facility is repaired, forming a plurality of short tubes by repeating the step of joining block units, connecting said short tubes in a longitudinal direction to form a continuous tubular assembly having an outer diameter smaller than an inner diameter of the flow passage, and injecting a grout material into a clearance space fanned between said tubular assembly and said flow passage facility to fix said tubular assembly onto said flow passage facility as part of said flow passage facility. 9. The method according to claim 8, wherein the joining of the block units is made with bolts inserted through both circumferential end faces of each said block unit and nuts fitted on said bolts associated therewith. 10. A block unit for repairing a flow passage facility comprising an inner plate and an outer plate disposed along a peripheral edge of said inner plate, said block unit being configured to assemble with additional block units to form a tubular assembly that remains as part of said flow passage facility, wherein the inner plate of said block unit constitutes an inner wall of the tubular assembly and is exposed to sewage, and the outer plate of said block unit extends from the inner wall of the tubular assembly toward the inner surface of a pipe to be repaired in the flow passage facility. 11. A block unit for repairing a flow passage facility according to claim 10, wherein said block unit is provided with reinforcing ribs for reinforcing said inner plate and said outer plate. 12. A block unit for repairing a flow passage facility according to claim 10, wherein said inner plate and said outer plate are formed with a plastic material. 13. A block unit for repairing a flow passage facility according to claim 12, wherein said plastic material is transparent or translucent. 14. A block unit for repairing a flow passage facility according to claim 10, wherein said outer plate defines bolt throughholes. 15. A block unit for repairing a flow passage facility according to claim 10, wherein said block unit has a circumferential dimension larger than a width dimension. 16. A tubular assembly for repairing a flow passage facility comprising a plurality of short tubes assembled with each other to remain as part of said flow passage facility, each one of the short tubes comprising a plurality of block units, at least one of the block units comprising an inner plate and an outer plate disposed along a peripheral edge of said inner plate, wherein the inner plate of said block unit constitutes an inner wall of the tubular assembly and is exposed to sewage, and the outer plate of said block unit extends from the inner wall of the tubular assembly toward the inner surface of a pipe to be repaired in the flow passage facility. 17. A tubular assembly according to claim 16, wherein said block unit is provided with reinforcing ribs for reinforcing said inner plate and said outer plate. 18. A method of repairing a flow passage facility having a sewer pipe to be repaired, said method comprising: providing a block unit comprising an inner plate and an outer plate; assembling said block unit with additional block units to form a tubular assembly that remains as part of said flow passage facility, wherein the inner plates of said block units form an inner wall of the tubular assembly; said assembling comprising (i) exposing the inner wall of the tubular assembly to a sewage flow path, and (ii) orienting the outer plate of said block unit so that it extends from the inner wall of the tubular assembly toward an inner surface of said sewer pipe in the flow passage facility. 19. A method of repairing a flow passage facility according to claim 18, wherein said providing comprises including reinforcing ribs in said block unit for reinforcing said inner plate and said outer plate. 20. A method of repairing a flow passage facility according to claim 18, wherein said providing comprises providing said inner plate and said outer plate in the form of plastic material. 21. A method of repairing a flow passage facility according to claim 20, wherein said providing comprises providing said plastic material in the form of transparent or translucent material. 22. A method of repairing a flow passage facility according to claim 18, wherein said providing comprises including bolt throughholes in said outer plate. 23. A block unit for repairing a flow passage facility according to claim 18, wherein said assembling comprises assembling block units having a circumferential dimension larger than a width dimension. 24. A method of repairing a flow passage facility having a sewer pipe to be repaired, said method comprising: providing a plurality of short tubes to remain as part of said flow passage facility, each one of the short tubes comprising a plurality of block units, at least one of the block units comprising an inner plate and an outer plate disposed along a peripheral edge of said inner plate; assembling the short tubes into a tubular assembly such that (i) the inner plates of said block units form an inner wall of the tubular assembly and said inner wall is exposed to a sewage flow path, and (ii) the outer plates of said block units extend from the inner wall of the tubular assembly toward an inner surface of said sewer pipe in the flow passage facility. 25. A tubular assembly according to claim 24, wherein said providing comprises including reinforcing ribs in each of said plurality of block units for reinforcing said inner plate and said outer plate.