Computer-assisted mine design procedures for longwall mining
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields



Publication Date Range:


Document Data


Document Type:






Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page


Computer-assisted mine design procedures for longwall mining

Filetype[PDF-2.60 MB]

  • English

  • Details:

    • Personal Author:
    • Description:
      "The Bureau of Mines has developed a unique new mine design procedure to detemine the changing static load distributions imposed on underground support structures during the mining cycle. The procedure reduces the complexities associated with analyzing a three- dimensional problem. A combination of the multiple-seam displacement-discontinuity model and a two-dimensional finite- element window model produces refined results for a specific area of interest by assuming displacement compatability between models. Input to the procedure includes the geometry of mined-out areas in up to two adjacent seams, the rock mass characteristics of the surrounding geology, the in situ stress conditions, and the mining sequence. The displacement-discontinuity program calculates expected loadings for mine structures affected by the mining cycle and/or overlying or underlying seams. Pseudoelastic finite-element analysis using a yield-factor approach determines the stability of coal pillars by simulating the degree and extent of progressive rib failure and subsequent load transfer. Application of the procedure is demonstrated on a field problem. Induced stress changes predicted from the numerical model analysis are in reasonably good agreement with stress measurements obtained from an instrumented chain pillar affected by remnant workings in an upper seam." - NIOSHTIC-2

      NIOSH no. 10006096

    • Document Type:
    • Main Document Checksum:
    • File Type:

    Supporting Files

    • No Additional Files

    More +

    You May Also Like

    Checkout today's featured content at