Abstrait

Study on stability of artificial pillar under regenerated mechanical environment

Kang Zhao, Zhang Junping, Xiaodong Zhao

In order to ensure that the ore mining stope structure stability, the artificial pillars in one gold mine were designed, their self-stability and effectiveness in supporting overburden rock of goaf were studied based on idea of regeneration of mechanical environment. This paper describes the studies of artificial pillar self- stability respectively in terms of stress changes, plastic zone distribution and displacement changes. The study results demonstrated that the designed artificial pillar can bear the weight of above overburden rock, show good stability itself, effectively prevent the destruction of surrounding rock and overburden rock of goaf and achieve the purpose of mine supporting. The designed artificial pillars can meet the needs of safety operation; however, the real-time stability monitoring should be emphasized at some key positions.