Method for governing leakage problem of water conservation reservoir dam through GCL

The invention relates to a method for governing the leakage problem of water conservation reservoir dam through GCL. The method comprises the following steps that (a) firstly, a geotechnical cloth body composed of two geotechnical cloth layers is taken, the bottom of the geotechnical cloth body is machined into an pocket type bearing structure, and a grouting pipe is embedded between the two geotechnical cloth layers; (b) then, a weight of placed into the pocket type bearing structure at the bottom of geotechnical cloth to form a bottom weight increasing edge, and the surface of the to-be-governed dam is evenly paved with the geotechnical cloth through the gravity of the weight; (c) afterwards, bentonite slurry is poured into the two geotechnical cloth layers through the grouting pipe to form a bentonite layer, and the bentonite layer and the geotechnical cloth body form a GCL anti-seepage layer; and (d) after the GCL anti-seepage layer is stabilized, concrete reinforcing edges are built on the periphery abov