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Longwall Mining

RECOVERY

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Set up for Recovery Set the Armoured Face Conveyor (AFC) and the Beam Stage Loader (BSL) chains and break them. The maingate drive is disconnected from the BSL mini pans and AFC pans by removing the dog bone connector at the maingate drive. Removing the Pantechnicon The pantechnicon consist of […]

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BOLT UP SEQUENCE

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Bolt Up Sequence Stage 1 Cut from the tailgate in 20 chock sections. Place 1 “w” strap over the top of the chock (ie perpendicular to the face) anchored with 2 bolts set at 6.8 metres. Set rows 1 & 3 after row 2 at 7.3 metres & 6.3 metres. […]

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BOLT UP CYCLE

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The bolting up cycle is the first major procedure in the recovery of the longwall. The purpose of the bolting up cycle is to provide a safe working environment for the recovery of equipment by providing support to the longwall face. Support is provided to the roof, face, maingate and […]

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CRITICAL PATH

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HUESKER SYSTEM

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VIDEO DEMONSTRATION Please choose your preferred video file Dial up (approx 14.9 MB) ADSL, ISDN or similar Broadband (approx 21.8 MB) High speed Broadband (approx 76.5 MB) Video’s Courtesy of NBW Mining Australia Read More  

INSTALLATION

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Installation of Pans from Chock #5 to Chock #70 Ensure that pans are placed in their correct order and install pans 63 to 12 and then from 64 to 68. Chock Installation The chocks are installed on the new face in the position that they occupied on the previous longwall. […]

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SYSTEMS

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The type of ventilation system used in a longwall mine is dependant upon the conditions found at each mine. The most influencial factor in the choice of ventilation system is the amount of gas that is present in the mine atmosphere. If the mine is considerably gassy the gas in […]

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OVERVIEW

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Ventilation of a longwall mine and the longwall face is one of the most important aspects of longwall mining.The main functions of ventilation in longwall mining is: Supply of fresh air at tolerable heat and humidity levels for the mine workers to breathe Removal of noxious gasses from the mine […]

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COMMUNICATIONS

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The communication systems used in undergound mining generally consist of the following: Telephone Systems: The telelphone has become an integral part of mine communication and is mainly used to locate and inform key personnel. The telephones used in underground coal mines are intrisically safe due to the hazardous mine atmosphere. […]

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BEAM STAGE LOADER

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When the coal is transported by the AFC along the longwall face it reaches the beam stage loader at the end of the face. The beam stage loader is simply a chain conveyor that transport coal from the AFC to the main belt conveyor. Also incorporated into the beam stage […]

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