CUTOFF DEVICE FOR INTERCEPTING SEWER AND CONSTRUCTION METHOD THEREOF

摘要

The present invention relates to a rail sewing machine, comprising: a rail groove portion formed to extend to a bottom surface of a sewer pipe along an opening formed by expanding a width of a manhole portion to be equal to or similar to a width of a sewer pipe; A guide part installed to insert the rail groove part and having a sliding groove part; A sliding door slidably inserted along the sliding groove and slid by the operation of the driving unit to open and close the sewer pipe; And a connection portion connecting the guide portion to the manhole portion or the sewer pipe.