Reservoir basin seepage-proof elevation-resistant structure and arrangement method

The invention discloses a reservoir basin seepage-proof elevation-resistant structure and an arrangement method. The lower surface of a reservoir embankment (1.3) of a regulation reservoir (1) is cleaned in advance to a designed cleaning baseline (2), a lower-layer geomembrane (3) is laid above the cleaning baseline (2), a gravel-cobble excavation material (5) is upward backfilled above the lower-layer geomembrane (3), an upper-layer geomembrane (4) is laid on the gravel-cobble excavation material (5), and the upper-layer geomembrane (4) is provided with a plurality of check valves (6). Two ends of the lower-layer geomembrane (3) upward extend to the top of the reservoir embankment (1.3) to form extending portions (3.3), the extending portions (3.3) and the upper-layer geomembrane (4) areconnected to form a closed whole. The shortcoming is overcome that a simple water draining measure is adopted to solve the anti-floating stability of a reservoir basin in the prior art, and the reservoir basin seepage-proof e