Research on Governance of Potential Safety Hazard in Da’an Mine Goaf

Lv, Shuran; Shujin, Lv

doi:10.1016/j.proeng.2011.11.2178

Cited by 5 publications

(1 citation statement)

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“…Shuran and Shujin [15] chose comprehensive treatment solutions including subarea blasting caving and mine goaf closing by comparing programs and numerical simulations while also considering resource recycling to achieve safe, economic and highly effective conditions and lay the foundation for continued production. Wei [16] determined the grouting scope, the drilling space arrangement, the slurry and the treatment methods for common problems in construction and proposed ideas for building railways in the goafs to provide a reference for similar works.…”

Section: Introductionmentioning

confidence: 99%

Instability of Gypsum Mining Goaf Under the Influence of Typical Faults

et al. 2019

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Mine collapse is a common geological hazard associated with mining areas. In this paper, the goaf of a gypsum mine under the influence of typical faults is chosen as an example, and the stress on the center of the goaf roof is examined through theoretical analysis. The safety factors of the pillar at −127 m, −140 m, and −160 m are evaluated to be 1.471, 1.469, and 1.467, respectively, based on the Wilson theory. It is concluded that the structural parameters of the mining stope are reasonable without considering the influence of the fault. Furthermore, the numerical simulation by FLAC 3D is used to verify the analytical results and to study the influence of typical faults on the stress and displacement of the goaf. The results showed that the load of the roof and the pillars at a distance from the fault was larger than the load near the fault. First, the roof at this location is pulled. Next, cracks appear and develop. Then, the middle of the stope roof is pulled and falls, and the overburden strata move. Finally, the unstable strata are transmitted to the surface, and the ground surface of the mining area subsides. INDEX TERMS Gypsum mine, typical fault, instability of goaf, finite difference method.

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Section: Introductionmentioning

confidence: 99%