Find all needed information about Longwall Face Support. Below you can see links where you can find everything you want to know about Longwall Face Support.
https://www.cat.com/en_US/products/new/equipment/underground-longwall.html
Cat® customized systems for longwall mining range from hydraulic roof supports and automated plow systems to shearers, face conveyors and roof support carriers. This site uses and sets "cookies" on your computer to help make this website better by keeping the site reliable and secure, personalizing content and ads, providing social media ...
https://en.wikipedia.org/wiki/Longwall_mining
Longwall mining has traditionally been a manual process in which alignment of the face equipment was done with string lines. Technologies have been developed which automates several aspects of the longwall mining operation, including a system that aligns the face of the retreating longwall panel perpendicularly to the gate-roads.
http://www.undergroundcoal.com.au/longwall/facesupports.aspx
EQUIPMENT SELECTION b) Face Supports. While it is frequently argued (correctly) that all items on a longwall face have to be considered as parts of an integrated unit and be fully compatible, it cannot be denied that poorly designed and inadequate roof supports are likely to have a greater effect on results than other items, and to that extent are more important.
https://www.cat.com/en_US/articles/customer-stories/mining/roof-supports-and-automation.html
For the longwall system at the Yalevskogo mine, SUEK combined Cat roof supports from other longwall faces. In total three different types of Cat roof supports were combined – with varying closed and extended heights. And since the longwall system at Yalevskogo mine is fully automated, all three types of roof supports were upgraded with a Cat PMC-R roof support control unit.
https://www.youtube.com/watch?v=N8hXAGNfQmU
Apr 12, 2016 · It includes an explanation of the different products/key components of a long-wall mining system (long-wall shearer, automated plow system, AFC face conveyor, line …
https://onlinelibrary.wiley.com/doi/full/10.1002/ese3.591
Compared with the poor face stability with uneven solid coal wall before face support (Figure 1), the current longwall face is intact and no face fall is observed. The stability of immediate roof ahead of shield tip is also better off. Longwall face advances without significant face fall problem.Author: Shengli Yang, Meng Li, Gaofeng Song, Yi Yang, Fei Xie
https://www.researchgate.net/publication/337954113_Optimization_of_face_flexible_bolting_and_grouting_technology_for_longwall_face_support_under_difficult_geological_conditions
wall before f ace support (Figure 1), the current longwall face . is intact and no face fall is observed. The stability of imme-diate roof ahead of shield tip is also better off. Longwall face
https://www.msha.gov/longwall-recovery-accidents
From September 1996 to November 2017, the mining industry experienced five fatal accidents when a section of the face or roof fell and struck miners positioned between the longwall face conveyor and coal face. The miners were in this location performing work, such as shoveling coal or installing supplemental support for the face and roof to aid recovery of the longwall
https://www.sciencedirect.com/science/article/pii/S2095268619302745
With this in mind, the decision was taken to drive the longwall under the roof rocks of coal seam B. Thus, a shale interlayer appeared in the longwall face, and powered support sections were carried out on the bottom of coal seam A.Cited by: 1
http://lascautomation.com/docs/FaceAlignmentSpecificationV2.04_000.pdf
The Longwall Roof Support system controls the advance of the armoured face conveyor (AFC) and is therefore the primary actuator in achieving controlled face alignment. From a control system perspective, the Roof Support system can be treated as a multi-channel position actuator with each channel corresponding to a roof support module and ...
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