METHOD TO FILL GAPS IN MINING COURSE Russian patent published in 2011 - IPC E21F15/02 E21D11/10 

FIELD: mining.

SUBSTANCE: method includes filling gaps with the help of flexible curb, which is a tight container sewn from hose of strong watertight cloth, shaped as a sack or bag closed at both ends. Valves with holes are installed in upper corners of flexible curb. One valve is intended to feed cement-containing mixture into the container, and the second one - for air outlet from filled space. The flexible curb is evenly laid behind course strengthening space, and cement-containing material is injected through one of valves, at the same time air is exhausted from filled space via the other valve.

EFFECT: high-quality and efficient filling of gaps in mining courses.

1 dwg