The invention relates to a scheme for quickly positioning breakage of an inner
geomembrane in anti-seepage
engineering, belonging to the technical field of anti-seepage in
hydraulic engineering (
civil engineering). The method of the invention comprises the following steps of: integrating continuous fibers and the
geomembrane, wherein the fibers are arranged uniformly like a snake in the
geomembrane, and the distance among the optical fibers is less than or equal to a strain sensitive distance of double fibers; taking the geomembrane as an anti-seepage material and conducting light paths of the fibers in the whole anti-seepage area; leading out the terminals of the fibers to a
fiber strain detecting device for covering a protective layer of the geomembrane; and according to the arrangementdesign of the anti-seepage
engineering, establishing a conversion expression between the
fiber length L and the XY coordinate values of an anti-seepage surface.
Fiber open circuit or abnormal strain caused by the breakage of the geomembrane can be found by a distributed detection
system, and the breakage position of the geomembrane can be quickly and accurately determined by the conversion between the
fiber length and a laying distance, thereby gaining precious emergency
repair time for a dam of which the geomembrane is damaged, and effectively reducing the occurrence of
dam collapse disasters.