Stability Analysis and Design of Open- Pit Mine Slope in China: A review
نویسندگان
چکیده
Based on current researches and developments of open-pit mine slope in China, the engineering features of open-pit mine slopes are summarized. Mine slope is basically formed by dynamic excavation of multi-level and multi-type, and mining benefit is the purpose of mine slope engineering when using various schemes and/or methods. Thus, the issues of design and stability analyses are the main concerns in open-pit mine slope. Based on the experiences of a variety of projects, the development process of open-pit mine slope engineering in China can be divided into four phases: (1) experience-based analogical design; (2) design in combination of limit equilibrium analysis and experience; (3) quantitative analysis design; (4) dynamic design based on comprehensive analysis. In this regard, five key technologies of the mine slope stability analysis are proposed: (1) limit equilibrium analysis; (2) numerical simulations; (3) reliability analysis; (4) "3S" technology; (5) equivalent pattern recognition techniques. Finally, the difficulties and challenging issues in design and stability analysis of open-pit mine in China are presented accordingly.
منابع مشابه
Back analysis of inter-ramp slope failure in Teghout copper mine
Slope stability is one of the most important issues in open pit mining design. The main purpose of any open pit mine design is to propose an optimal excavation configuration, considering safety, ore recovery and financial return. An accurate pit slope design which accounts for the mine geology, structural geology, rock mass properties, and hydrogeology models of the mine area, drastically enhan...
متن کاملA comparison between effects of earthquake and blasting on stability of mine slopes: a case study of Chadormalu open-pit mine
Dynamic slope stability in open-pit mines still remains a challenging task in the computational mining design. Earthquake and blasting are two significant sources of dynamic loads that can cause many damages to open-pit mines in active seismic areas and during exploitation cycles. In this work, the effects of earthquake and blasting on the stability of the NW slope of Chadormalu mine are compar...
متن کاملInvestigation of Bishop’s and Janbu’s Models Capabilities on Slope Stability Problems with Special Consideration to Open-Pit Mining Operations
One of the most effective parameters in economics of open-pit mines is the pit slope angle, so that the slope angle more than the optimum value increases the probability of a large failure in the pit wall and the slope angle less than the optimum value leads to increasing stripping ratio and reducing net present value of mine. Therefore, in this paper, considering the limit equilibrium methods ...
متن کاملEffects of geometrical and geomechanical properties on slope stability of open-pit mines using 2D and 3D finite difference methods
Slope stability analysis is one of the most important problems in mining and geotechnical engineering. Ignoring the importance of these problems can lead to significant losses. Selecting an appropriate method to analyze the slope stability requires a proper understanding of how different factors influence the outputs of the analyses. This paper evaluates the effects of considering the real geom...
متن کاملComparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine
Sungun Copper Mine is located in an area with a high level of seismic hazard. Most recently, the Ahar-Varzeqan earthquake with a magnitude of 6.2 on Richter scale occurred on August 11, 2012; at a distance about 40 kilometers away from the mine. Nevertheless, the seismic stability of the final pit wall has not been comprehensively reviewed. In this research, the southwestern wall of the final p...
متن کامل