Analysis of ARMPS2010 database with LaModel and an updated abutment angle equation  

作　　者：Deniz Tuncay Ihsan Berk Tulu Ted Klemetti 

机构地区：[1]Department of Mining Engineering,West Virginia University,Morgantown,WV 26505,USA [2]National Institute for Occupational Safety and Health,Pittsburgh Mining Research Division,Pittsburgh,PA 15236,USA

出　　处：《International Journal of Mining Science and Technology》2020年第1期111-118,共8页矿业科学技术学报（英文版）

基　　金：This study was sponsored by the Alpha Foundation for the Improvement of Mine Safety and Health,Inc.(ALPHA FOUNDATION).The views,opinions and recommendations expressed herein are solely those of the authors and do not imply any endorsement by the ALPHA FOUNDATION,its Directors and staff.The findings and conclusions in this report are those of the author(s)and do not necessarily represent the official position of the National Institute for Occupational Safety and Health,Centers for Disease Control and Prevention.Mention of any company or product does not constitute endorsement by NIOSH.

摘　　要：The Analysis of Retreat Mining Pillar Stability(ARMPS) program was developed by the National Institute for Occupational Safety and Health(NIOSH) to help the United States coal mining industry to design safe retreat room-and-pillar panels. ARMPS calculates the magnitude of the in-situ and mining-induced loads by using geometrical computations and empirical rules. In particular, the program uses the "abutment angle" concept in calculating the magnitude of the abutment load on pillars adjacent to a gob. In this paper, stress measurements from United States and Australian mines with different overburden geologies with varying hard rock percentages were back analyzed. The results of the analyses indicated that for depths less than 200 m, the ARMPS empirical derivation of a 21° abutment angle was supported by the case histories;however, at depths greater than 200 m, the abutment angle was found to be significantly less than 21°. In this paper, a new equation employing the panel width to overburden depth ratio is constructed for the calculation of accurate abutment angles for deeper mining cases. The new abutment angle equation was tested using both ARMPS2010 and La Model for the entire case history database of ARMPS2010. The new abutment angle equation to estimate the magnitude of the mining-induced loads used together with the La Model program was found to give good classification accuracies compared to ARMPS2010 for deep cover cases.

关 键 词：ABUTMENT ANGLE ARMPS2010 LaModel ARMPS-LAM COAL mining PILLAR stability 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论] TD313[自动化与计算机技术—计算机科学与技术]