Cutting for Coal: The Long and Short of Longwall Mining

Mine excavator facing coal wall

Cutting for Coal: The Long and Short of Longwall Mining

Posted on June 8, 2017

Sometimes, it really is all in a name.  Largely recognized as productive, efficient, and safe, longwall mining is a highly mechanized underground mining method in which – you guessed it – a rectangular ‘long wall’ of coal, also known as the coal seam or longwall panel, is mined in a single horizontal slice.  Longwall mining is used to extract coal where surface mining is not a viable option.

Depending on the height of the coalbed, either a plow or a shearer is used to continuously cut section after section of the seam, in a back and forth motion, across the vertical coal face until the complete longwall panel has been mined.  As the plow or shearer cuts along the working face, the raw coal is loosened and falls to a parallel conveyor system for removal from the mine.  In addition to the employment of a cutting machine and conveyor, the use of self-advancing hydraulic ceiling supports is crucial for both productivity and safety in longwall mining.  These automated ceiling supports, or hydraulic shields, travel forward horizontally with the other machinery as the longwall sections are mined, allowing the roof to collapse and fill the void behind them.

Visit Victaulic next week June 13th-15th in Pittsburgh, Pennsylvania for the 2017 Longwall USA Exhibition and Conference.  Click here to learn more about the show and register to attend!

Longwall Mining - Extract Coal | Victaulic

Victaulic

Victaulic

Victaulic is the leading producer of mechanical pipe joining solutions. Engineered with confidence, our solutions put people to work faster, while increasing safety, ensuring reliability and maximizing efficiency.

Related posts

FireLock NXT™ Devices (Series 768 and 769) Technical Service Bulletin

FireLock NXT™ Devices (Series 768 and 769) Technical Service Bulletin

Firelock NXT (Series 768 and 769) Technical Service Bulletin from November 2013. For more information contact Victaulic at 1-855-861-1227 (within t...

Victaulic StrengThin Piping System

Victaulic Adds Plug Valve to StrengThin™ Piping System, Updates Grooved Coupling Design

Victaulic StrengThin Piping System now has an updated coupling design. This innovative high-pressure piping system solution for balance-of-plant ap...

Victaulic Hybrid Fire Suppression Systems

Evaluating Hybrid Fire Suppression Systems at the 2015 SFPE

Victaulic Senior Project Engineer, Larry Carmen, will speak at the 2015 SFPE Conference on evaluating hybrid fire suppression systems for the prote...

Recent posts

HDPE Couplings Rescue a Landfill’s Failed Fusion Welds

Gas is extracted using vertical wells and a vacuum system and transported to the gas-to-energy plant via HDPE pipe before being converted into power.

Retrofit Piping Systems with Victaulic Mechanical Joining Products

The Top Six Mechanical Retrofitting Best Practices – Tip Five

Interested in the top six mechanical retrofitting best practices? Tip 5: Implement Modular Mechanical Room to Improve System Efficiency.

Large Pipe Retrofitting Job - Victaulic Best Practices - Tip Four

The Top Six Mechanical Retrofitting Best Practices – Tip Four

Interested in mechanical retrofitting best practices? Learn about the top six here here. Tip 4: Maximize Jobsite Productivity.