METHOD OF SECURING THE ANCHOR AND PLANT FOR ITS EMBODIMENT Russian patent published in 1997 - IPC

FIELD: mineworking support, particular, roof bolting and devices for securing the anchors. SUBSTANCE: method of securing the anchor includes insertion into borehole of load-carrying rod, filling of borehole, first, with loose material, and then, with cementing material. Prior to insertion into borehole, connected to load-carrying rod by means of magnetic field is conveying line, and, they both are inserted into the borehole. Loose material is supplied together with plasticizer beyond the boundary of pressure arch to the depth determined by the formula given in the invention description. Borehole below the boundary of pressure arch is filled with mineral cementing material. Conveying line is withdrawn from the borehole as it is filled. The plant for embodiment of the offered method includes air-supplying line, chamber with inlet and outlet is connected with conveying line for supply of loose material, vessel for liquid, and hose connected to the end part of conveying line, control panel. The plant also includes chamber with cementing mineral filler parallel connected to conveying line whose end entering the borehole has material with magnetic properties. On the side of chamber inlet, vessel with liquid is connected by means of supplying air ducts with control unit which is connected by flexible hoses with control panel located in place of anchor fastening, and additionally with valves of chamber inlets at the beginning of conveying line. Air supplying line connecting vessel with control unit is additionally connected with shutoff valve of vessel inlet. EFFECT: higher efficiency. 3 cl, 3 dwg