METHOD FOR SUPPORTING MINE WORKINGS WITH THERMAL STRENGTHENING OF UNSTABLE ROCKS

摘要

FIELD: mining.;SUBSTANCE: method for supporting mine workings with thermal strengthening of unstable rocks involves drilling at the roof-to-bottomhole interface on each driving of vertical wells and in the section with them of inclined wells with the length exceeding the length of drivings by the value of the lock part of anchor, installation of anchors in them and engagement of vertical and inclined anchors with end parts at each driving. At that, one part of drilled wells is equipped with thermal elements providing the temperature at their combustion, which is enough for the required strengthening of rocks in the volume of solid mass section between neighbouring wells, and other part of wells is used for further support of mine working with anchors. Connection and interaction of inclined and vertical anchors between each other and with solid mass of rocks is provided by means of support angles and tension nuts.;EFFECT: improving reliability of use of rock bolting and increasing stability of mine workings at their development and support.;2 cl, 6 dwg