Analysis characteristics determination of electrohydraulic control system operation to reduce the operation time of a powered roof support

The article discusses basic functions of a powered roof support in a longwall unit. The support function is to provide safety by protecting mine workings against uncontrolled falling of rocks. The subject of the research includes the measures to shorten the time of roof support shifting. The roof su...

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Bibliographic Details
Main Author: Szurgacz, Dawid
Format: Conference Proceeding
Language:English
Subjects:
Cartridges (explosive)
Dynamic loads
Exploitation
Hydraulic control
Longwall mining
Mining
Mining accidents & safety
Occupational safety
Operating costs
Resource exploitation
Tremors
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Summary:The article discusses basic functions of a powered roof support in a longwall unit. The support function is to provide safety by protecting mine workings against uncontrolled falling of rocks. The subject of the research includes the measures to shorten the time of roof support shifting. The roof support is adapted to transfer, in hazard conditions of rock mass tremors, dynamic loads caused by mining exploitation. The article presents preliminary research results on the time reduction of the unit advance to increase the extraction process and thus reduce operating costs. Conducted stand tests showed the ability to increase the flow for 3/2-way valve cartridges. The level of fluid flowing through the cartridges is adequate to control individual actuators.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/20182900007