ERECTION METHOD OF FILLING CONNECTION STRAP Russian patent published in 2010 - IPC E21F15/00 E21F17/103 

FIELD: mining.

SUBSTANCE: invention refers to mining engineering and can be used during underground development of mineral deposits. Erection method of filling connection strap involves making of rock dike by laying as to width and height of the filling working of large rock pieces 1, on which there put is layer of finer rock or sand 2 with drain pipe 3 passed through rock dike. On rock dike there installed are pneumocylinders 4, which are forced outwards, between rock dike and roof of working by supplying to pneumocylinders 4 of compressed air with outward pressure which is more than limit value, at decrease of which pneumocylinders 4 are forced with backfill material 5 to the side of non-filled part of the working. Distance between rock dike and roof of working is determined by the ratio: a_min<h<0.75a_max, where: a_min - minimum height of pneumocylinder 4 when in folded position till compressed air is supplied to it; h - distance between rock dike and roof of working; a_max - size of pneumocylinder 4 after compressed air has been supplied to it.

EFFECT: increasing efficiency of filling operations.

1 cl, 1 dwg