Underground mine backfilling is a form of ground improvement that has to be carried out in the mine sites. The backfilling provides ground support and regional stability, thus facilitating ore removal from nearby regions. ... The mining methods and different types of backfills are briefly discussed, with major focus on paste fills and hydraulic ...
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Backfilling of voids created by mining is a fundamental component of most underground stoping operations. Without backfill, these operations would be less safe, less productive and shorter in life.
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Solid backfilling mining uses solid backfilling materials such as gangues, coal ashes, loess, aeolian sands or their mixtures to backfill the goaf.
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With these objectives in mind, the purpose of this paper is to highlight the basic geotechnical issues regarding undergroung mining with …
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The safe and efficient extraction of ore bodies under buildings contributes to the continued exploitation and utilization of mineral resources. To effectively reduce the mining-induced disturbance caused to surface buildings, the Vertical Crater Retreat (VCR) delayed backfilling method was applied at the Wuji iron mine according to mining theory and …
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To reduce or eliminate environmental damage during mining processes, green mining practices have emerged as a focal point in China's metal mining research. Cemented paste backfill technology plays a pivotal role in promoting green mining within the metal industry.
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The current backfilling coal mining methods still have many limitations, such as lack of filling time and filling space and poor coordination between filling time and filling space. On the basis ...
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Backfilling mining is a green mining method. The rational design of the compressed ratio of the backfilling body can reduce backfilling mining costs while avoiding mining-induced environmental damage. At present, the enumeration method is a common design method for the compressed ratio of the backfilling body of backfilling mining under buildings …
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Backfilling in underground mines is a fundamental part of the operation. The backfill material provides support to the surrounding rock mass, mitigates the risk of surface level subsidence, reduces wasteful ore dilution, and creates a safer working area for mining activities.
WhatsApp: +86 18221755073
To reduce or eliminate environmental damage during mining processes, green mining practices have emerged as a focal point in China's metal mining research. Cemented …
WhatsApp: +86 18221755073
Backfilling of voids created by mining is a fundamental component of most underground stoping operations. Without backfill, these operations would be less safe, less productive and shorter …
WhatsApp: +86 18221755073
Some of the common methods of backfilling which are used according to economic factors and further goals such as development of mine or abandoning the mine are rock backfill, hydraulic...
WhatsApp: +86 18221755073
Backfill is widely used around the world to fill the man-made voids created in the underground environment once ore has been mined out and removed. Its function is to stabilize the …
WhatsApp: +86 18221755073
This paper will briefly describe how backfill contributes to a mining operation, the types available and some mining methods that use it. It will cover the method of selecting the appropriate backfill system and some of the challenges and …
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Backfilling mining is thought to play a significant role in controlling the deformation of coal and rock strata and the distribution of underground pressure. ... on the deformation of coal and rock strata consisting of multiple goaf during excavation using the backfill mining method. In this study, a numerical three-dimensional fast Lagrangian ...
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Mine Backfilling Process Hazards. Here are the most common hazards to a mining operation associated with the backfill process: Backfill segregation. When using hydraulic sand backfill, coarse and fine particles can separate while the …
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To solve the problems caused by the high-intensity mining of coal, scholars in China proposed a coal mining method with backfilling of goafs [13,14,15,16]. Backfill materials prepared with solid wastes, such as gangue and fly ash, are directly backfilled into goafs in each backfill mining panel to replace coal resources and control strata ...
WhatsApp: +86 18221755073
Backfilling in underground mines is a fundamental part of the operation. The backfill material provides support to the surrounding rock mass, mitigates the risk of surface level subsidence, reduces wasteful ore dilution, and creates a safer …
WhatsApp: +86 18221755073
This paper will briefly describe how backfill contributes to a mining operation, the types available and some mining methods that use it. It will cover the method of selecting the appropriate backfill system and some of the challenges and opportunities that arise from the selection process.
WhatsApp: +86 18221755073
Different Types of Mine Backfilling Methods Using Mine Tailings Applied in Underground Mines from Peru 2.1. Characteristics of Backfilling Technologies in Peruvian Underground Mine Conditions ... and Alex Marinovic. 2023. "Experiences of Underground Mine Backfilling Using Mine Tailings Developed in the Andean Region of Peru: A Green Mining ...
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Solid backfilling mining uses solid backfilling materials such as gangues, coal ashes, loess, aeolian sands or their mixtures to backfill the goaf.
WhatsApp: +86 18221755073
Determining the best mining method before work begins is critical. Analysis of ore bodies lets miners understand which method will obtain the highest yield and offer the most cost-effective solution. It's also essential for safety. Many methods rely on backfill to create a new working surface - if the fill material isn't up to the task, the ...
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Paste backfill mining is an significant part of green coal mining, which can improve resource utilization and extend the service life of mines. It is important for solving the "three under, one above" mining problem and avoiding industrial wastes such as coal gangue and fly ash that occupy farmland and pollute the environment. To address the difficult filling problem of a fully …
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(1) Three backfilling methodologies have been proposed in this study including 1) 100 % mining and 100 % backfilling (method 1); 2) leaving one slice of coal between two backfilled slices (method 2) and 3) leaving one slice of coal between one backfilled slice (method 3) in order to minimise the surface subsidence and subsidence influential area.
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Backfill is widely used around the world to fill the man-made voids created in the underground environment once ore has been mined out and removed. Its function is to stabilize the workings, but it can also assist miners in several ways, partly by creating a floor from which they can work.
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With these objectives in mind, the purpose of this paper is to highlight the basic geotechnical issues regarding undergroung mining with backfills, following new developments by the Australian...
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The backfill-strip mining is gradually applied to shallow coal seam mining for buildings protection because of its good effect, high resource recovery rate, and low filling cost (Guo et al. 2004; Wang et al. 2015a, b; Li et al. 2016; Zhu et al. 2019a, b).The traditional subsidence prediction method in backfill-strip mining is to divide the mining area into several …
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Backfill mining, an environmentally friendly mining method, has emerged as a viable solution, offering the potential to ensure mining safety, reduce environmental pollution …
WhatsApp: +86 18221755073
Some of the common methods of backfilling which are used according to economic factors and further goals such as development of mine or abandoning the mine are rock backfill, hydraulic...
WhatsApp: +86 18221755073
Backfill mining, an environmentally friendly mining method, has emerged as a viable solution, offering the potential to ensure mining safety, reduce environmental pollution stemming from tailings stockpiles, and enhance ore resource recovery.
WhatsApp: +86 18221755073
Backfill-strip mining technology is composed of backfill mining technology and caving mining technology,and a conventional subsidence prediction method, which has been proposed based on the implementation process of backfill-strip mining technology, has been used to predict the surface subsidence in backfill-strip mining (Wang et al. 2015; Zhang et al. 2017; …
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Two key functions of backfill are to provide local support in the mine to permit access to ore, and to maintain regional stability of the mining area without subsidence or other long-term effects.
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The subsidence control effect and economic benefit of backfill-strip mining, backfilling mining, strip mining, and caving mining method are contrastively analyzed. Analysis shows that the surface movement deformation values are small in backfill-strip mining, the surface buildings were not damaged, the resource recovery rate is high, and the ...
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