METHOD TO MINE ORE DEPOSITS WITH UNCONTROLLED CAVING AND DISCHARGE OF CAVED ORE Russian patent published in 2012 - IPC E21C41/22 

FIELD: mining.

SUBSTANCE: method includes driving of mine preparation excavation, development of craters for discharge of caved ore and area of uncontrolled caving cutting with formation of a dome-shaped ore pile. In an ore body there is a central well drilled, and several additional wells are drilled at the distance of hydraulic radius of cutting. Then via each well, surfaces of ore pile and vault roof are scanned along concentric circumferences with specified pitches along a horizontal and a vertical lines with a light beam from a laser source arranged in a cavity formed by these surfaces and aligned by an azimuth. Using values of measured and specified parameters, coordinates of contact points are determined, and a spatial form is built for a surface of an ore pile and an uncontrolled caving vault. Information signals are treated with the help of a computer in a processing system.

EFFECT: control signals are generated for a process of ore discharge from craters, besides, a cycle of pile and vault surfaces form control is carried out with the specified frequency.

2 dwg, 1 ex