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- W1569005055 abstract "Highly detailed planning, advance preparation, and mechanization insure face transfer with minimum lost time and maximum safety. Unless a mine possesses a complete set of back-up self-advancing supports, its output will periodically fluctuate with production losses due to faces being shut down while the equipment is being shifted from one face to another. Houilleres de Provence has made a very intensive study of face transfers, aimed at the maximum reduction of production losses. There is a growing tendency to increase the number of equipment units available, allowing a complete back-up system. This makes it possible to begin production at a new face before the old face has mined its last coal. It is important to organize the dismantling of a finished face in the best possible conditions while insuring an increase in safety. Several tests have been made, and it was decided to use a 15/38 support that moves parallel to the face, enabling: (1) more safety for miners recovering the supports from the face. (2) improvement of the working conditions by avoiding the necessity of moving additional broken ground. (3) suppression of uncontrolled ground pressure effects and outbursts during the dismantling operations. The placing of mesh on the roofmore » makes it possible to remove the supports inside a protected space, where falls of ground are not possible. Considerable time is gained and safety increased. Fast action winches and rubber-tired loaders allow an increase in the speed of salvaging and removal of the supports. The face dismantling must be carried out in minimum time if exposure to get ground pressure effects or outbursts in the working area are to be avoided. For this reason, it is necessary to work continuously.« less" @default.
- W1569005055 created "2016-06-24" @default.
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- W1569005055 date "1982-07-01" @default.
- W1569005055 modified "2023-09-24" @default.
- W1569005055 title "Rapid transfer of self-advancing supports" @default.
- W1569005055 hasPublicationYear "1982" @default.
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