• Viewpoint Mining Magazine - Longwall Top-Coal Caving

    Jul 25, 2018· Block caving is a new alternative method of developing new mines or extending the operation of open pits. Block caving is an underground hard rock mining method that involves undermining an ore body, allowing it to progressively collapse under its own weight. It is the underground version of open pit mining.

  • Fully Mechanized Longwall Coal Production - YouTube

    May 09, 2012· http://clearcutmining.com/ This video describes the process of underground longwall mining used in the Australian coal mining industry.

  • Longwall Top Coal Caving | Introduction | underground COAL

    Longwall Top Coal Caving. Longwall top coal caving (LTCC) is a special type of longwall mining applicable to very thick seams (greater than 4.5m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining …

  • Sublevel Caving Mining Method - Newtrax Technologies Inc.

    Technique of top coal caving with vibration . ... Based on the model, the load resistance of the hydraulic support with a large mining height for top-coal caving method is determined. With the ...

  • Longwall Top Coal Caving (LTCC) Mining Technology

    Caving Methods of Mining. There are three distinctive methods of working large deposits that involve, in some way, the factor of caving. Slightly different names are in use, but those that are simple as well as descriptive are top slicing, sublevel caving, and block caving.

  • 3D numerical modeling of longwall mining with top-coal ...

    Apr 30, 2015· has extensive experience in the design of roof supports for specific mining conditions. Longwall Top Coal Caving (LTCC) roof supports allow mining of seams seams thicker than 6 ...

  • The Principle of Longwall Top Coal Caving (LTCC) - YouTube

    Longwall Top Coal Caving has been considered as one of the most effective technologies for the extraction of underground thick coal seams. A large number of studies on the applicability of Longwall Top Coal Caving into new mine sites have linked the success of its application to the geomechanical understanding of the cavability of the top coal.

  • Longwall Mining - YouTube

    Feb 10, 2018· - Block Caving Mining Method Black Diamond Drilling Services Australia PTY LTD ... The Principle of Longwall Top Coal Caving (LTCC) - Duration: 3:58. Global Mining 1,382,093 ...

  • Longwall Top Coal Caving (LTCC) technology - Yancoal

    Yancoal introduced the Longwall Top Coal Caving (LTCC) mining technology to Australia at its Austar mine in 2006. Developed in China, top coal caving uses a modified long wall mining system. LTCC allows the excavation of thick coal seam...

  • Caving mechanisms of loose top-coal in longwall top-coal ...

    Apr 12, 2016· This video provides a basic description of the long-wall mining method for extracting coal underground. It includes an explanation of the different products/key components of a long-wall mining ...

  • Types of Underground Mining Method Comparison

    Undoubtedly, caving of naturally fractured or blasted top coal under gravity is the most critical factor in determination of mining method-related parameters such as geometry and dimensions of longwall panel, face support and production scheduling.

  • LONGWALL TOP COAL CAVING - underground COAL

    The top-coal caving mining method, developed steadily in the past two decades, has become the main method for thick seam coal mining in China. In recent years, the core research areas in the top-coal caving mining are the mechanisms of top-coal caving and the improvement of top-coal recovery ratio.

  • Stress analysis of longwall top coal caving - ScienceDirect

    Longwall top coal caving (LTCC) is a relatively new method of mining thick coal seams that is currently achieving high productivity and efficiency in application, particularly in China. The technique is similar to traditional longwall mining in that a cutting head slices coal from the lower section of the coal seam onto a conveyor belt ...

  • Stress analysis of longwall top coal caving | Request PDF

    equipment for a Longwall Top Coal Caving face. Photo courtesy of Joy Manufacturing Company Pty Ltd A brief description of longwall top coal caving (LTCC) is included at the end of the Longwall section of the Fundamentals of Coal Mining module of this web site.

  • A review of cavability evaluation in longwall top coal caving

    Above Pic ture, A typical mining planning of longwall top coal caving method. Coal Seam Thickness 4.5-7 Meters; Phase 3rd 6.5-7 Meters. Depth of Coal 400-700 Meters; currently, the mining depth is 530 Meters . An additional AFC is attached to the rear of the chocks and …

  • Longwall Top Coal Caving,Top Coal Caving,Top Coal Caving ...

    Longwall top coal caving (LTCC) is a relatively new method of mining thick coal seams that is currently achieving high productivity and efficiency in application, particularly in China.

  • (PDF) Technique of top coal caving with vibration

    Feb 03, 2015· Fully mechanized Longwall Coal Production. Skip navigation ... The Principle of Longwall Top Coal Caving ... Global Mining 1,377,072 views. 3:58. Coal Mining in Appalachia - Duration ...

  • Numerical Modeling of Longwall Top Coal Caving Method at ...

    The preferred mining method for these thick coal seams is the Longwall Top Coal Caving (LTCC). The connection of both the top coal caving and its compactness are still rare; therefore, the ...

  • Principles of Longwall Mining - YouTube

    Mining starts at the top of the ore body and progresses downwards in a safe sequence. Sublevel Caving is a productive mining method where all of the ore is fragmented by blasting and the host rock in the hanging wall of the ore body caves. Once the production drifts have been excavated and reinforced, the opening rays and long hole drilling and ...

  • Block caving: A new mining method arises | Geoengineer.org

    Longwall Top Coal Caving (LTCC) is a special designed longwall mining method for very thick seams (thickness is more than 4.5m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining height.