Deformation prediction and analysis of underground mining during stacking of dry gangue in open-pit based on response surface methodology

Qiu, Xianyang; Chen, Jia-yao; Shi, Xiuzhi; Zhang, Shu; Zhou, Jian; Chen, Xin

doi:10.1007/s11771-018-3746-3

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…In the past, research on the direction of mining slopes paid more attention to artificial slopes, for instance, open-pit mine slopes [2], while neglecting to research original mining slopes (natural mining slopes). There has been almost no direct research reference on mining such deposits under HSRS; therefore, based on the experience of artificial slopes, the first prerequisite for mining beneath HSRS is to ensure the stability and safety of the slope.…”

Section: Introductionmentioning

confidence: 99%

Application of Numerical Simulation Methods in Solving Complex Mining Engineering Problems in Dingxi Mine, China

Zhang

et al. 2022

Minerals

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In the mining industry, with numerical simulation analysis of stope roof stability, stope exposed area computation, and pillar buckling collapse simulation, backfill body creep damage mechanism research is becoming the most popular method in the field of backfill mining techniques. In this paper, we first summarized and analyzed the current application status and the existing problems of numerical simulation for solving mining engineering technical problems; then, based on the practical engineering problems of mining phosphate rock resources under high and steep rock slopes (HSRS), we carried out a true-3D numerical simulation study for different underground mining methods, to determine the appropriate mining method. Therefore, this paper, taking Dingxi Mine in China as an example, highlights the advantages of the backfill mining method with a high and steep slope; meanwhile, it also points out how to improve the accuracy of a numerical simulation and make it more consistent with the actual situation of the mining engineering application site. This paper only serves as a guide, in order to start a conversation, and we hope many more experts and scholars will become interested and engaged in this field of research.

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Section: Introductionmentioning

confidence: 99%

Application of Numerical Simulation Methods in Solving Complex Mining Engineering Problems in Dingxi Mine, China

Zhang

et al. 2022

Minerals

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“…The factors affecting roof stability are very complex. The uncertainty of these factors will become stronger when they reach a certain underground depth, which seriously threatens safe mining and puts higher demands on the prediction and evaluation method (Qiu et al 2018). Scholars have published many valuable research ndings in this area in recent decades.…”

Section: Introductionmentioning

confidence: 99%

Chamber roof deformation prediction and analysis of underground mining using experimental design methodologies

et al. 2022

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The deformation prediction of the chamber roof is crucial in underground mining. Combined with Flac3D numerical simulation, the experimental design methodologies, including single-factor test (SFT), Plackett-Burman design (PBD), steepest ascent design (SAD), and response surface methodology (RSM), were used to evaluate the effect of multiple variables on the chamber roof deformation. Firstly, eight factors that affected the vertical displacement (D s ) of the chamber roof were selected, and the sensitive interval of every factor was obtained through SFT. Then, four factors that signi cantly affect the results were screened by PBD: cohesion (C o ), stope length (L s ), stope width (W s ), and internal friction angle (f r ). 29 groups of response surface schemes with 4 factors and 3 levels satisfying the Box-Behnken design (BBD) were simulated. Through the result analysis of variance (ANOVA) and sensitivity, the in uence order of each factor on D s can be determined: W s >L s >f r > C o >interaction between C o and f r > interaction between L s and W s . Finally, using the prediction model, the roof deformation of 0#N stope of a lead-zinc mine was predicted and the error was analyzed. The relative errors between the prediction value and the numerical simulation value, the measured value are 0.7% and 4.3%, respectively, which indicates that the prediction model is reasonable and has a certain reference value for mine safety. HighlightsAn assessment has been made on the effect of orebody properties, orebody dip angle, and stope structure parameters on chamber roof deformation.Four factors that had a signi cant impact on the chamber roof deformation were screened out through Plackett-Burman design.A quadratic polynomial prediction model was set up through response surface methodology. The individual and interactive effects of four factors on displacement have determined signi cant.

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“…Box-Behnken is a response surface design method, especially for the study of factors ranging from 3 to 7. Multivariate quadratic equations can be used to fit the functional relationship between multiple factors and response values, analyze the response value and the nonlinear relationship between the various factors [9]. The paper used this method based on a certain number of experiments; the effects of the mass concentration, tailing/rock ratio, cement/(tailing ?…”

Section: Introductionmentioning

confidence: 99%

The Optimization of Mix Proportions for Cement Paste Backfill Materials via Box–Behnken Experimental Method

Dai

et al. 2019

J. Inst. Eng. India Ser. D

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Cemented paste backfill (CPB) technology has been applied quite popular around the world. Determining a reliable filling material mix proportions is an important aspect of mine backfilling. To produce effective CPB materials at copper mines technologically and economically, Box-Behnken design experimental program (four factors and three levels) was carried out to test the optimal mix proportions with unclassified tailings. Results of the test indicated that slump decreased first and then increased with the increase in the pumping agent content. However, the slump decreased with the mass concentration, cement content and tailing/rock ratio. And 28-day uniaxial compressive strength (UCS) was positively correlated with rock content and mass concentration. The sensitive degrees of each variable to the slump and UCS were determined, and the influence of law and mechanism of each factor on the response value was analyzed. Relationships of paste properties and influential factors can be demonstrated with regression analysis. Additionally, the optimal mix proportion for cement paste backfill was obtained with 76.75% mass concentration, 3.35 tailing/rock ratio, 0.1 cement/(tailing ? rock) ratio and 1.24% pumping agent addition. The slump and UCS of the optimal mixture were 24.1 cm and 1.59 MPa, respectively. The experimental results showed a feasible way to produce the industry standard backfilling materials.

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Deformation prediction and analysis of underground mining during stacking of dry gangue in open-pit based on response surface methodology

Cited by 4 publications

References 15 publications

Application of Numerical Simulation Methods in Solving Complex Mining Engineering Problems in Dingxi Mine, China

Application of Numerical Simulation Methods in Solving Complex Mining Engineering Problems in Dingxi Mine, China

Chamber roof deformation prediction and analysis of underground mining using experimental design methodologies

The Optimization of Mix Proportions for Cement Paste Backfill Materials via Box–Behnken Experimental Method

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