All of my short, yet eventful mine planning career I have always thought of the strip ratio as one of the most important measurements especially in open pit mining. Most open pit mines require the ...
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The ecological impacts of mining and the instability of slopes are the key factors restricting the safe, efficient, and low-carbon production of open-pit mines. This study focused on the ultimate pit limit (UPL) optimization under the concept of sustainability by integrating consideration of the economic benefit, ecological impact, and slope …
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1. Introduction. Open-pit mining is a method of extracting mineral deposits by excavating from the Earth's surface. It works by starting at the surface and removing non-economic overlays to access profitable parts []pared with the underground mining method, open-pit mining has the advantages of high resource recovery, good safety conditions, …
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surface mining methods; open pit planning and design; open pit terminology; stripping ratio; factors governing strip mining; calculation of overburden ratio; initial data collection checklist ...
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The Antianbao open-pit coal mine, located in Shuozhou city, Shanxi Province (Fig. 2), is the largest and most modern coal production base in China (Bai et al., 2018b).The geographical coordinates of this open-pit coal mine are 112°19′-112°24′E and 39°30′-39°35′N, and the area is a typical ecologically fragile area of the Loess Plateau …
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Based on feedback from the results of spot monitoring, to simulate the real situation of open-pit coal mines, the experiment used coal dust and soil from the mines as dust materials. During the experiments, 20 g of coal-soil mixed dust was used, in which different mass ratios of coal dust content (0%, 25%, 50%, 75%, and ) were set to ...
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1. Introduction. Slope stability analysis is one of the main issues in the field of geotechnical, open pit mines and rock engineering projects. In large scale open-pit …
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Top producers such as Grupo Mexico's Buenavista del Cobre, Newmont Goldcorp's Peñasquito, two of Fresnillo's gold-silver units, and several other mines owned by Industrias Peñoles are open ...
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The eco-service cost of the economic optimum pit attributed to the cost of rock stripping is 0.0186 US$/ m 3 which is calculated according to the area of the initial …
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Given the global importance and limited availability of phosphate, optimizing the use of this critical resource and minimizing its wastage are of paramount importance. In this context, this paper proposes an innovative architecture for the implementation of an intelligent video surveillance system specifically designed for open-pit phosphate …
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Spontaneous combustion in coal mines is simply the oxidation of self-heated coal, resulting in burning of in situ coal (Eroglu and Moolman, 2003; Phillips et al., 2011). Spontaneous combustion affects the calorific value of coal, leads to the emission of noxious gases, and contributes to coal losses both directly and indirectly.
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Open-pit mining is a project to extract valuable minerals from mines. It mainly consists of four links: perforation, blasting, mining and loading, and transportation.The mining equipment required for …
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Open pit mining 8 1.4. Underground coal mining 9 1.4.1. Room and pillar 9 1.4.2. Longwall 12 ... Typical operating cost breakdown for strip coal mining in South ... Distribution of total capital costs in open pit mines ..... 25 Figure 2.3: Distribution of costs for main activities of the production cycle ...
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A case study on an open-pit coal mine shows that the mining life is 39 years, annual production capacity is 16.49 million tons and the NPV is 33.998 billion RMB without capacity investment taken ...
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Truck haulage cost constitutes about 26% of open-pit mining costs as the trucks are mostly powered by diesel whose cost is escalating annually. ... mines and 32 strip mines in Illinois from 1970 ...
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The ecological impacts of mining and the instability of slopes are the key factors restricting the safe, efficient, and low-carbon production of open-pit mines. This study focused on the ultimate pit limit (UPL) optimization under the concept of …
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The open pit mining of coal in Bangko Barat, South Sumatra, Indonesia involves an excavation of the so called 'soft rock' with an average compressive streng th of less than 7 MPa by Bukit Asam ...
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Elevation and aspect are the main topographic factors that affect the vegetation status. ... 2018; Cao et al., 2013). The special mining method of open-pit coal mines causes severe disturbance and destruction to the environment (Cheng et al., 2019; Shi et al., 2018). ... This study provides a reference for the selection of measures and the ...
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As the province most abundant in mineral resources in China, Inner Mongolia has more than 200 open-pit coal mines. The coal mining activities seriously hinder the sustainable use of regional land ...
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PDF | On Apr 23, 2019, Cai qing xiang and others published Open Pit Coal Mines | Find, read and cite all the research you need on ResearchGate ... Lower cost. The production cost of surface mining ...
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According to this study's findings, slope stability problems in open-pit coal mines can be avoided, and mine wall collapse can be effectively mitigated by the use of cut-and-backfill mining techniques. …
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Some mines are high grade ore bodies so even a waste overburden of 60m-80m does not affect the profitability of the mining operations. No one size fits all.
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According to this study's findings, slope stability problems in open-pit coal mines can be avoided, and mine wall collapse can be effectively mitigated by the use of cut-and-backfill mining techniques. The main research results are as follows: (1) The stope and waste rock's geotechnical, physical, and mechanical characteristics were gathered …
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Introduction. China is heavily dependent on coal, and the proportion of coal in the energy structure will be continuously high 1 – 3.The open-pit coal mining has the characteristics of high recovery and high safety factors, open-pit coal mining can bring huge economic benefits to the mining area 4 – 7.In the mining design of open pit coal mine, planning …
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1. Introduction. Slope stability analysis is one of the main issues in the field of geotechnical, open pit mines and rock engineering projects. In large scale open-pit mines, the overall slope angle has a great impact on the stripping ratio, mining operation costs, and safety requirements.
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The geology of this type of deposit is modeled into a column model, instead of a block model, to avoid coal-rock mixing in blocks. A nested pit generation algorithm …
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1. Introduction. Open-pit mining is a method of extracting mineral deposits by excavating from the Earth's surface. It works by starting at the surface and removing …
WhatsApp: +86 18221755073
The production capacity of open-pit coal mines is an important parameter of mine design and development. Production capacity planning is closely related to the economic benefits of mining enterprises.
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Similarly, a 2012 landslide at the Phan Me open-pit coal mine in Vietnam (Duc et al. 2014) had a volume of 2.5 million cubic meters and resulted in 7 deaths. More …
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In surface mining operations, truck haulage is the largest item in the operating costs, constituting 50 to 60% of the total. In order to reduce this cost, it is necessary to allocate and dispatch ...
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