METHOD TO PREPARE AND MINE RESERVES OF MINEFIELDS Russian patent published in 2014 - IPC E21C41/18 E21D23/00 

Abstract RU 2513607 C2

FIELD: mining.

SUBSTANCE: method includes extraction of coal in a long working face by retraction, ventilation of the working face, control of mining pressure by damage of roof rocks in the mined space, collection of minefields in the lower points of the mine and supply of aqueous solution of antipyrogene into the mined space. Extraction pillars are mined in turns with reverse and forward strokes. In advance they erect a dismantling technical inspection and installation chambers coaxially. The longwall mechanised equipment set - LMES - is driven into the dismantling chamber without a thrust at the chamber roof. The elements of the set are moved in blocks by three from the dismantling chamber into the installation one, on the way they do routine maintenance as the blocks move in the technical inspection chamber, at the same time they use movement mechanisms of thrust-sliding-sliding type with autonomous power supply to each block. The mechanism of movement of thrust-sliding-sliding type they use the same sections of the LMES support and their interconnection via movement cylinders with the appropriate chute of the longwall face conveyor. For the period of dismantling they create n autonomous blocks of three with alternate movement of 3 sections of the support without thrust relative to 3 chutes that serve as a stiff beam.

EFFECT: method speeds up installation of LMES into a dismantling chamber, makes it possible without technical facilities of delivery to do the re-installation under its own power from longwall face to longwall face of the LMES in blocks of three, to re-install longwall face of 450 m for 10 days, 300 m for 5-7 days, which will make it possible to increase efficiency of LMES usage.

2 cl, 2 dwg

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Authors

Dates

2014-04-20Published

2013-01-14Filed