Slope Stability in Open Pit Mines in Clayey Rock Mass

Nizametdinov, N. F.; Nizametdinova, R. F.; Nagibin, A. A.; Estaeva, A. R.

doi:10.1134/s1062739120026649

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…The total station uses the automatic looking prism mode to collect deformation, which is consistent with the time interval of deformation obtained by slope radar. At the same time, it realizes the matching between slope data and total station data in its own coordinate system [5]. However, there was no significant displacement in the selected scene.…”

Section: Literature Reviewmentioning

confidence: 97%

Slope Topography Monitoring Based on UAV Tilt Photography Technology and Sensor Technology

Cao

Dai

et al. 2022

Journal of Sensors

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In order to solve the problems of high risk and low efficiency of the traditional rock mass structure logging method of open-pit mine slope, this paper proposes a method to improve the geological logging of traditional open-pit mine slope by using UAV tilt photography technology. Taking the slope of an open-pit quarry as an example, this method expounds the application method and work flow of UAV photography technology in geological logging. The experimental results show that the maximum and minimum absolute errors in the X direction of UAV test are 5.1 cm and 1.1 cm, respectively; MAE value is 2.90 cm; and RMSE value is 3.17 cm. The maximum and minimum absolute errors in Y direction are 3.3 cm and 0.9CM, respectively; MAE value is 2.36 cm; and RMSE value is 2.498 cm. Vertical error refers to the error in elevation. The maximum and minimum absolute errors in Z direction are 9.6 cm and 5.7 cm, respectively; MAE value is 7.44 cm; and RMSE value is 7.54 cm. Conclusion. The reliability of this technology is verified by comparing the occurrence measured by compass and that calculated by point cloud. On this basis, the dominant occurrence of structural plane is divided, which provides basic data support for the analysis of mine slope stability.

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Section: Literature Reviewmentioning

confidence: 97%

Slope Topography Monitoring Based on UAV Tilt Photography Technology and Sensor Technology

Cao

Dai

et al. 2022

Journal of Sensors

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“…e use of numerical simulations fused with monitoring techniques has been the main research method for open pit slope stability analysis. e slope of the open pit mine is accompanied by the open pit mine from the beginning to the end, the depth of the open pit mine increases further, the height of its slope also increases further, and the risk of landslides and other instability is also increasing year by year [1][2][3][4]. As the instability of open pit slopes can endanger the lives of workers and cause property damage, it is of practical importance to study the stability of open pit slopes.…”

Section: Introductionmentioning

confidence: 99%

Mine Slope Stability Based on Fusion Technology of InSAR Monitoring and Numerical Simulation

Yuan

et al. 2022

Scientific Programming

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In this paper, the slope of the open pit of Dahongshan iron ore mine in Yunnan is taken as the research object, the safety coefficient and settlement values of the slope under natural and rainfall conditions are derived by the finite element software Midas/GTS, and the surface settlement versus time is produced by fusing the InSAR monitoring results of the study area for a whole year to judge the stability of the open pit slope. The results show that the settlement and deformation areas shown by numerical simulation and InSAR monitoring results are consistent; the comparison between InSAR monitoring results and rainfall intensity shows that the cumulative value of slope settlement has a high correlation with heavy rainfall. The safety coefficients of the slopes of the open pit under natural conditions and rainfall conditions are 1.50 and 1.21, the cumulative value of settlement in InSAR monitoring data for one year is 18.4 mm, and no obvious large deformation area is found. The use of numerical simulation combined with InSAR monitoring can realize the analysis of the stability of the slope of the open pit mine.

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“…The deformation processes affect a significant part of the mined massif and are caused by the influence of a number of factors, among which the rock physical and mechanical properties dominate, taking into account watering, loading by mining equipment and seismic effects. The authors of [13] point out the need to analyze in detail the stability of the pit walls and individual benches in connection with technological operations in order to substantiate the technology of high rhythm ore mining. Based on the study on the geological structure and physicalmechanical properties of different lith ological varieties, the parameters of the slopes and pit walls in clay rock of the overburden are concretized.…”

Section: Introductionmentioning

confidence: 99%

Technology of an open pit refinement under limit stability of sides

Moldabayev¹,

Sultanbekova²,

Адамчук³

et al. 2022

Nauk. visn. nat. hirn. univ.

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Purpose. To establish the feasibility of refining deep open-pit mines below the boundary of the use of combined motor-conveyor transport with an increased slope angles of the pit walls using the developed transport unit for reloading rocks to overlying horizons during the reactivation of pillars under transport berms. Methodology. Preparation of a digital block model of the deposit, the elaboration of 3D geomechanical models for the dynamics of mining, 2D and 3D numerical simulation of the rock stress-strain state of the outcrops of opencast workings, mathematical modeling of stepwise ore reserves and mining schedule, patent research and feasibility study. Findings. It is advisable to carry out mining in terms of the marginal rock state with an increase in the slope of the pit sides below the limit of application of the cyclic and continuous method in ultra-deep open pits. Such design of pit sides is achieved when benches are mined from top to bottom within the boundaries of steeply inclined layers with the use of inter-bench loaders of the developed designed in the completion zone. Provisions for the selection and feasibility of using the loader in the deep zone are formulated based on demarcation of application zones of cyclic (road transport) and cyclic-flow (combined road-conveyor transport) technologies. Originality. Schematization of the mining operation was performed based on the calculated values of safety factor of sides, which allows increasing the slope angles of the pit walls of even ultra-deep open pits in the completion zone. It was found that with deepening of mining, the zones of potential sliding move away from the loose overburden to lower ore benches closer to the final depth of the Kacharsky open pit (760 m), but the safety factor corresponds to the required value according to the design standards. Practical value. An increase in the slope of the pit walls in the completion zone can be achieved using the developed loading installation, the main difference of which is that it can be moved without dismantling under conditions of reactivation of transport pillars (with an increase in lifting height by 1.54.5 times compared to the known equipment).

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Slope Stability in Open Pit Mines in Clayey Rock Mass

Cited by 4 publications

References 1 publication

Slope Topography Monitoring Based on UAV Tilt Photography Technology and Sensor Technology

Slope Topography Monitoring Based on UAV Tilt Photography Technology and Sensor Technology

Mine Slope Stability Based on Fusion Technology of InSAR Monitoring and Numerical Simulation

Technology of an open pit refinement under limit stability of sides

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