METHOD OF DESTRUCTION OF ROCKS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2014 - IPC E21C37/12 

FIELD: mining.

SUBSTANCE: method comprises drilling a hole, filling it with the non-Newtonian fluid, feeding of the working body into the hole, inflicting strikes on it with the drill-rod. The strikes are inflicted through the elastic element such as spring. The effort is periodically made to the drill-rod synchronously with its rebounds. The device comprises a working body located in a hole filled with the non-Newtonian fluid, a guide tube in which the drill-rod is inserted with the ability of longitudinal movement, and between it and the working body an elastic element is placed such as a spring. The guide tube is made of nonmagnetic material and a solenoid coil is mounted on it, provided with a control system. The end of the drill-rod from the solenoid coil side is magnetised.

EFFECT: effect on the non-Newtonian fluid with the growing load, providing manifestation of the effect of hydraulic amplification by it, increasing significantly the rock destructing power, matching the periodicity of applying a load to the reaction to it of array with the formed crack, simplifying the design of the device.

8 cl, 2 dwg