Inner casing, sealed against surface-water leakage, for a water well made of concrete rings

摘要

Sealing procedure for sealing a water well made of concrete rings against surface water running down. The procedure comprises an inner casing produced, by various means, of a plastic suitable for foodstuffs, so that surface water is prevented from running down through the concrete-ring joints into the underground water. The procedure also comprises layers of sand and clay placed between the concrete rings and the inner casing, the combination of which will stop the surface water running down into water wells. IMAGE