Hole plugging method

Abstract

Abstract Holes in the earth surface and the like are plugged by first placing a prefabricated plug at a predetermined position in a hole to be plugged, and then arranging in the hole another plug above and limited by the prefabricated plug. The another plug is preferably formed in the hole by expanding a water-tight material such as a polyurethane so as to block the hole. A further plug constructed from a non-settling material such as a vermiculite is arranged in the hole above the expanded water-tight plug. Topsoil and seed may be placed above the further plug for finishing the hole plugging procedure. The prefabricated plug may have a substantially circular, planar base member provided with peripheral portions and diverging walls extending from the peripheral portions in a common direction from the base member. The diverging walls may have a plurality of corrugations arranged extending in a direction of divergence of the walls for permitting the adjustment of the walls to various size holes. The further plug may be preformed and combined with the topsoil and seed element to form a pre-packaged unit. The steps of placing the prefabricated plug and forming the expanded, water-tight plug may be used to fill voids adjacent to and communicating with the hole. After the expanded plug has been formed, the hole may be re-drilled without removing the expanded material from the voids.

Inventors

• 👤 G Crank

Bibliographic Details