Numerical Simulation of Ground Pressure Activity Caused by Orebody Mining under Road

Abstract:

There is the Jinggu-Minle road to cross through the No. 3 ore clusters in Songjiapo copper mine. The surface ground deformation and strata movement caused by underground mining will threaten the road transportation safety, which doesn’t allow collapse. Using numerical simulation method, the ground pressure activity and deformation, movement mechanism of strata were analyzed under different mining methods. Moreover, some control measures such as reserving insulating pillar and point pillars were put forward to maintain the stability of mined-out areas and the surface road. An optimal mining scheme was recommended. The results showed that the mining process of No. 3 ore clusters can’t cause direct failure to road, and the failure of hanging wall rock will have indirect influence to the road with the lapse of time. Reserving the insulating pillar, top pillar and point pillars can effectively reduce the plastic area range of hanging wall and strata failure in the mining process. The results can provide theoretical basis for the actual mining design and rock strata control.

• Periodical: Advanced Materials Research (Volume 462)
• Pages: 407-412
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.462.407
• Online since: February 2012
• Authors: Zong Hong Zhou, Ke Peng Hou, Feng Yu Ren
• Keywords: Deformation, Ground Pressure Activity, Insulating Pillar, Movement, Strata Control, Surface Subsidence

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