Ding X.-P.,China Coal Research Institute |
Ding X.-P.,Beijing Mine Safety Engineering Technology Research Center |
Wang J.,China Coal Research Institute |
Wang J.,Beijing Mine Safety Engineering Technology Research Center |
And 4 more authors.
Meitan Xuebao/Journal of the China Coal Society | Year: 2014
With the theoretical analysis and the similar material simulation experiment, the concept of the key strata which control the slope stability about open-underground combined mining was proposed, mechanism of slope deformation and destruction about open-underground combined mining under the coupling effects of key hard strata and key weak strata. Then a mechanical model was established, with witch the estimating formula of the slope sliding depth for open-underground combined mining under the coupling effects about key strata were deduced, combining with the end slope sliding engineering example caused by underground mining of Anjialing open-pit mine in Pingshuo mining area, the applicability of the formula were verified, the results show that, the expected results and similar material simulation experiment results and the displacement monitoring results are very similar. Based on this research, the reasonable estimate of the slope sliding depth for open-underground combined mining is feasible, which will provid basis for optimizing relationship between time and space, confirming boundary parameter, monitoring the slope deformation and slope treatment about open-underground combined mining. ©, 2014, Meitan Xuebao/Journal of the China Coal Society. All right reserved.