METHOD FOR DRIVING MINITUNNELS AND HEAD SECTION OF COMPLEX OF EQUIPMENT FOR REALIZATION OF SAID METHOD Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: method includes destruction of soil at all pit-face area, transfer of soil to loading window of helical conveyer and transporting from pit-face area to place for reloading for delivery to surface. Destruction of soil in central area of pit-face is performed by screw of conveyer, while in the remaining ring portion of face forwarding cutting of slits is performed due to presence of cutters with front slanting surfaces and continuous recreation of free space behind cutters during process of feeding of section to face. Following separation and destruction of remaining area of face is performed by inner surface of cone of cuter portion of equipment complex. For realization of method head section of equipment complex has helical conveyer and body forming limiting cover with open face with support and cutting portions. Cutting portion is made in form of cone made with angle at vertex of no more than 80° and base of which forms cutting edge along body perimeter. Inner surface of body is provided with cutters placed at sharp angle to forming line of cone with forward slanting surfaces and cutting edge mounted ahead of cone, with forming of free space behind cutters. Cutting edge of cutters may be placed ahead of cutting edge of body base. Helical conveyer may be placed on section axis. Front end of screw may be expanded behind plane of ring edge for a value greater than screw diameter.

EFFECT: higher reliability of tunnels driving process under complicated geological conditions.

2 cl, 5 dwg