Application on AHP risk assessment method for the instability analysis of the room-pillar goafs in coal mine

Jian Li; Wen Li; Hailong Du; Jinsong An; Weiye Zhao; Qinghua Liu; Wenwu Dou; Donghao Wang; Haozhe Zhang

doi:10.1117/12.2620643

22 December 2021 Application on AHP risk assessment method for the instability analysis of the room-pillar goafs in coal mine

Jian Li, Wen Li, Hailong Du, Jinsong An, Weiye Zhao, Qinghua Liu, Wenwu Dou, Donghao Wang, Haozhe Zhang

Author Affiliations +

Proceedings Volume 12058, Fifth International Conference on Traffic Engineering and Transportation System (ICTETS 2021); 120583K (2021) https://doi.org/10.1117/12.2620643
Event: 5th International Conference on Traffic Engineering and Transportation System (ICTETS 2021), 2021, Chongqing, China

Abstract

The room-pillar goafs in the central and western China have the remarkable characteristics of multi-layer staggered and continuous distribution. And the goafs disaster has been the key issues that enterprises urgently need to solve. This paper introduces the Analytic Hierarchy Process (AHP) risk assessment method, divides the instability of the room-pillar goafs in Yushenfu mining area into three levels: mining conditions, geological conditions and goafs conditions, and analyzes such influencing factors of the instability of the goafs as the coal pillar strength, mining and retention ratio, coal pillar shape, mining times, roof control methods and collapse conditions, average stress of overlying strata, uniaxial compressive strength of overlying strata, depth of coal seam, area of goafs, surface subsidence, remaining time of the goafs, goafs instability events, etc. The weights of the first and second criterion-level factors and index-level factors of the instability risk evaluation of the coal mine goafs are obtained based on 12 influencing factors. Due to the difference of factors, the risk of the goafs is divided into four levels: safer, safer, general dangerous, and dangerous. Case analysis shows that it is feasible and reliable to evaluate the instability of room-pillar goafs using the AHP risk assessment method.

Citation Download Citation

Jian Li, Wen Li, Hailong Du, Jinsong An, Weiye Zhao, Qinghua Liu, Wenwu Dou, Donghao Wang, and Haozhe Zhang "Application on AHP risk assessment method for the instability analysis of the room-pillar goafs in coal mine", Proc. SPIE 12058, Fifth International Conference on Traffic Engineering and Transportation System (ICTETS 2021), 120583K (22 December 2021); https://doi.org/10.1117/12.2620643

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KEYWORDS

Mining

Earthquakes

Krypton

Analytical research

Lithium

Safety

Shape analysis

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