E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
61/48
E02D 3/00 (2006.01)
Patent
CA 2010882
This invention provides a method of stabilizing cemented back fill areas for mines. After certain mining operations have been carried out, creating mined voids, it is common to back fill for purposes of stabilizing the rock conditions in the areas where the mining operations have taken place. Generally, the back filling comprises "cementing" which is in fact placing concrete made using the coarse broken rock fraction from the mine tailings. The concrete is pumped or dumped or otherwise put into place, usually without any use of reinforcing steel bars or other reinforcement. By the present invention, additional very large aggregate pieces are placed in the back fill area at the same time as the concrete is pumped or dumped into that area. Those additional very large aggregate pieces are generally at least portions of used automotive tires, or they may be whole tires or shredded tires, or other large pieces of waste rubber material. It has been determined that the use of such very large aggregate pieces in cemented back fill increases the stabilization of the back fill, thereby assuring stabilization of rock conditions in the mined area where the back fill has been placed.
Marks & Clerk
Sheridan John Patrick
LandOfFree
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