Articles

Probability Analysis and Verification of Cavity Instability Based on FLAC3D-RSM

  • LUO Zhouquan;TAN Langlang;DENG Qiao
Expand
  • School of Resources and Safety Engineering, Central South University, Changsha 410083, China

Received date: 2011-12-01

  Revised date: 2012-04-04

  Online published: 2012-04-08

Abstract

In view of the safety misadventure due to many residue mined-out cavities after mining in practical projects, the stability of cavities must be evaluated accurately. The cavities in 54-6# mine were taken as an example in this study. Using the powerful pre-processing functions of Midas, the grid model was generated to be used in FLAC3D for numerical analyses. Results show that there has a large tensile stress on both sides of the cavity. In view of this fact, with the response surface calculation method, the possibility of instability damage of the cavity is analyzed. It is shown that the cavity imposes the obvious instability risk. Then, the cavity model was measured twice, to validate the accuracy of the results and verify the conclusion of the numerical analysis and the instability probability analysis on the cavity. This paper provides a reliable evaluation method for the stability of mined-out cavities.

Cite this article

LUO Zhouquan;TAN Langlang;DENG Qiao . Probability Analysis and Verification of Cavity Instability Based on FLAC3D-RSM[J]. Science & Technology Review, 2012 , 30(10) : 43 -48 . DOI: 10.3981/j.issn.1000-7857.2012.10.006

Outlines

/