A method of waterproofing surfaces, special application to the inner surfaces of tunnels, channels and mining

摘要

A method for waterproofing surfaces, especially the interior surfaces of tunnels, canals and mines, including the steps of: a) cutting strips of lining material; b) drilling holes in the interior surface, according to the various transversal sections of the surface to be waterproofed; c) fastening the strips of lining material to the surface by fastening members, so that the strips of lining material are anchored to the surface; d) coupling each strip with the adjacent strips, in both longitudinal and transversal directions, to make a leaktight weld between them; e) covering the fastening members not covered in the coupling operation with accessory pieces of lining material; f) placing a cord or stringer of waterproof material at the side edges of the lining sections, between the end strips and the lower part of said side edges; and g) sealing with an elastic sealer holes in the inner lining which enable the fastening members projecting from the surface to pass through the lining strips, as well as those joints between sheets or strips which, in addition to the welding between said sheets, require watertightness.