Methods of renovating sewers

Details Methods of renovating sewers Methods of renovating sewers

1983-11-23

1988-03-01

Corbin, David H.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

138 97, 405156, E03F 306

Patent

active

047282231

ABSTRACT:
This invention relates to an improved method of relining a sewer especially a small diameter sewer with a plurality of lengths of pipe.
From a control station remote from the sewer, pipes are moved up the sewer to the fixed lining. The pipe is then inductively fusion welded to the lining and the annulus between the pipe and the sewer is sealed with grout. All these operations are controlled from the control station.
Also provided by the invention is a method of accurately locating laterals in the sewer and cutting holes in the pipe and accurately aligning these holes with the lateral to accommodate the lateral.
Also provided is a grouting pump for forming grout in situ in the sewer.

REFERENCES:
patent: 2794758 (1957-06-01), Harper et al.
patent: 3602263 (1971-08-01), Bremner

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