METHOD OF EXCAVATION SUPPORT ON SEAM LIABLE TO ROCK-BUMPS Russian patent published in 2015 - IPC E21D11/18 E21D20/00 

FIELD: mining.

SUBSTANCE: method of excavation support, passed on the formations hazardous on rock burst, comprising fixing the dome of working with combined support consisting of anchor and frame timbering. At that the anchors lower in the row using a clamp with the holes press the frame support rack to the array. Between the array and the clamp on the anchors a collapsible member is placed. The anchors are located at an α angle to the horizontal plane and they are fixed in a rock layer, which is the continuation of the drift floor. The α angle is determined by the formula grade, where l_a is the active length of the anchor, m; b is the distance from the drift floor to the place of mounting the anchor, m; h is the depth of immediate bottom, m.

EFFECT: increase and providing sustainability of working, passed through the formation, hazardous on rock bursts, with a view of minimizing the consequences of destruction as a result of rock burst.

2 dwg