Coal Pillar Stability – Laminated Overburden

ARMPS-LAM, was developed to effectively integrate the laminated overburden model into the ARMPS program. See Zhang and Heasley (2013) for details. ARMPS-LAM provided an automated solution for a LaModel analysis of an ARMPS-type mine design. The ARMPS-LAM program takes the typical ARMPS geometric input and empirical parameters for defining the mining plan and loading condition and then automatically conducts a complete LaModel analysis to calculate the stability factor of the Active Mining Zone (AMZ) (and barrier pillars), all without further user input. The program contains the necessary modules for covering all aspects and procedures of a full LaModel analysis, from pre-processing to post-processing. From the user perspective, only the traditional ARMPS input is required. Additionally, similar to ARMPS, the output contains the AMZ SF, barrier pillars SF, and other loading and strength data; however, these output values are now calculated using the laminated overburden model. See Newman et al. (2016) for a description of the ARMPS-LAM program.

The ARMPS-LAM program consists of three primary modules: pre-processing, numerical solution, and post-processing. The pre-processing module includes the necessary subroutines to import data, develop, and calibrate the laminated overburden model. The numerical solution module solves the laminated overburden model, and the post-processing module contains the subroutines to automatically extract and calculate the Stability Factors and pillar loadings and then output the important data. See Zhang et al. (2014) for a comparison between ARMPS and ARMPS-LAM. The ARMPS-LAM program was initially released in 2015. In January 2023, following minor interface modifications, the ARMPS-LAM program was added to this website.

The current version of the ARMPS-LAM package is 1.1.05 and was released on February 09, 2023. Click here to download.

Following the update of the ARMPS methodology to the ACPS methodology, the ARMPS-LAM program was updated to the ACPS-LAM program.

Below is a timeline of the initial release and updates as well as links to download the program and help information.

• Feb 08, 2023 update (v1.0.02): Release of the ACPS-LAM package.
• Feb 09, 2023 update (v1.0.03): Various minor improvements.
• Feb 10, 2023 update (v1.0.04): Fixed issue with automatic updates.

The current version of the ACPS-LAM package is 1.0.04 and was released on February 10, 2023. Click here to download.