Государственное Высшее Учебное Заведение "Криворожский Национальный Университет"
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A method for formation of chamber of a doser includes penetration of cut workings, implementation of drill-blast operations, extraction of rock mass in contours of the chamber. In the shaft of the mine one preliminarily installs a protective curtain that consists of conveyor band and Rabitz type steel-wire fabric, mounting is carried out from platforms installed on the levels of reinforcement. After that one penetrates a cut working to its stemming with shaft, and then from the working one performs angle brace of the upper section of the chamber to designed dimensions. After that one performs breakage of massif with falling holes to chamber of conveyor of feeder till formation of the upper section of the chamber, penetration of the lower section is carried out by the type of penetration of vertical shafts of the mines. At that one lefts rock pillar before concrete support of the shaft, with extraction of broken rock mass with grab from doser chamber, and the end distortion of the rock pillar is carried out with lowering doser chamber in the process of its construction.
UAU201208091U2012-07-022012-07-02Method for formation of chamber of a doser
UA76677U
(en)