Evaluation of the use of sublevel open stoping in the mining …
The field scale experimental results indicate that sublevel open stoping with fan layout blastholes and tight backfilling is suitable as a mining method for the condition where an orebody and the hangingwall can be kept stable during the mining process. The use of manual scrapers was found limited to operations outside the stope.
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Research on the Influence of Backfilling Mining in an Iron Mine …
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 …
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A Review of Underground Mine Backfilling Methods with …
Rock backfill method is an economical back filling method which is feasible and applicable in some but not all cases in underground mining. This method decreases …
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Beginners' Guide to Cut and Fill Mining Method
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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Stability analysis of large-scale stope using stage subsequent filling
Gao (2002) experimentally investigated the application of the sublevel stope delayed backfilling method at the Tonglvshan copper mine. Xiao (2005) conducted a physical modeling of high-level large-diameter long-hole mining at the Anqing copper mine to optimize the mining sequence.
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Green coordinated mining technology of strip mining roadway backfilling
In order to reduce the damage of surface and ecological environment in Northwest China caused by high-intensity mining, a new coordinated mining method mixed with "strip mining roadway backfilling ...
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Design method for cadmium and arsenic contamination …
Workflow of mining-selecting-backfilling integrated coal mining method. 4. The control approach for lowering of cadmium and arsenic contamination during mining-selecting-backfilling integrated coal mining technology. From the above analysis, the mining-selecting-backfilling integrated coal mining technology is the optimal way to …
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mining pressure in mixed workface using a gangue backfilling …
Through comparisions with the caving method, the backfilling method and the mixed workface without protective coal seam, the particularity of the law of mining pressure for the mixed workface is analysed. The caving method and the backfilling method have been fully studied in China and abroad.
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Surrounding Rock Deformation Mechanism and
After stabilized deformation, the roadway section satisfies the design and application requirements. The feasibility and rationality of the GER with the fully mechanized gangue backfilling mining are proved, providing a safe, efficient, and environmentally friendly mining method without using a coal pillar.
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What is Backfilling? A Guide to Backfill in Mining and …
In the mining sector, backfilling can vary, depending on the need. In many cases, it's simply the process of refilling holes that have been dug up or found (mining voids) during the mining process. In others, it may involve mixing soil with other products (such as cement or binding agents) to create specific backfilling solutions.
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Cut-and-Fill Mining Method | SpringerLink
Cut-and-fill is a mining method that backfilling the goaf with filling material is adopted to the ground pressure management with the advancement of mining operation. Brief History. Cut-and-fill mining method was developed based on filling technique, and the upward cut-and-fill stoping method was first mainly used for dry rock fill. ...
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Key theory and technology of cemented paste backfill for …
Mining along strike the upward layered backfill method, point pillar backfill method (1) Ensure self-propelled equipment running; (2) the bottom of the stope …
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Subsidence prediction method of solid backfilling mining …
The backfill ratio of the gangue, ε, is the index for evaluating the quality of the backfilling.The equivalent mining height (Guo et al. 2014) is m e = m × (1 − ε), where m is the thickness of the coal seam. There are three main factors affecting the gangue backfill ratio. They are lacking distance of roof-contract, movement of the roof and floor …
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Water-preserved mining with the method named "backfilling while mining"
In view of the problems such as the shortage of filling time and filling space,the difficulty of coordination between coal mining and filling operation and so on,the new method named "backfilling while mining" was applied to water-preserved mining. In the mining of process,all the roadway in the mining block is divided into several mining stages. The …
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Research on Path Planning Method of Solid Backfilling and …
The underground coal mine backfilling space is a complex mixed area, comprising filling equipment, filling material transportation equipment, bulk material, and a completed filling body. ... and Xuanrui Zhang. 2024. "Research on Path Planning Method of Solid Backfilling and Pushing Mechanism Based on Adaptive Genetic Particle Swarm …
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Subsidence Control Design Method and Application to …
Since backfill-strip mining method was proposed, it has undergone continuous development. Backfill-strip mining uses coal gangue and other solid wastes as the main backfill material to fill the underground mine; on the one hand, it can reduce waste discharge such as gangue; on the other hand, it can be applied in coal seam extraction …
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Application of a Backfilling Method in Coal Mining to …
Comparison of an ancient mining method and current mechanised mining without backfilling. (a) The ancient mining method described in The Tiangong Kaiwu, published in 1637; (b) The current mechanised mining method; the method is characterised by its caving system, which is both economical and efficient to enable high productivity.
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Cemented Backfilling Mining Technology for Gently Inclined …
Backfill mining is an important green mining technology (GMT) method and an effective technical approach to resolve these issues [9, 10]. Solid backfilling, paste backfilling, …
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Cemented Backfilling Mining Technology for Gently …
To improve the efficiency and reduce costs of cemented-fill mining, we propose a continuous mining and continuous backfilling (CMCB) method based on the coal resources at the Yuxing mine in Inner ...
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Optimization Research of Stope Structural Parameters in …
Focus on a -400m level stoping in a gold mine, the ANSYS numerical software was used to study the stope structural parameters in upward drift cut-and backfilling mining methods.
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Underground Mine Backfilling Transition in Sukinda, Odisha …
The open stoping mining method is generally used in sublevel, long hole or blast hole stoping. Presently, most of the open stoping methods are used in conjunction with backfilling ... The efficiency of this backfilling method depends on how freely numerous mining operations can take place without interfering with one another. …
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Study on the setting time and real-stope continuous filling …
The mine adopts medium-deep hole sublevel open stoping with subsequent backfilling mining method. Before backfilling, the flexible retaining wall is used to block the goaf. Due to the weak initial strength of the retaining wall, the filling height before the filling body height reaches the retaining wall height is low.
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Essential Guide to Backfilling in Mining …
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 …
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Leading innovators in mine backfilling for the mining industry
Mine backfilling is a key innovation area in mining. Backfilling is a key operation within underground mining. The backfill material supports the surrounding rock mass, reduces the risk of surface level subsidence, reduces wasteful ore dilution, and creates a safer mining working area. ... The company employs a unique downward …
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A case study of mining-induced impacts on the stability of …
Using a 2D physical simulation experiment, a comprehensive analysis method and engineering design concept for the stability control of overlying multi-tunnels with backfill mining are put forward based on further research of the deformation characteristics of multi-tunnels using caving and backfilling method.
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Underground Mine Backfilling in Australia Using …
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 …
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Advantages of Backfill Mining Method for Small and …
Despite China's position as a global mining powerhouse, tens of thousands of small- and medium-sized mines (SM mines) within the country continue to pose …
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Strata movement and surface subsidence prediction model …
With the mining depth increasing, the mining-induced stress and bedrock ratio increase, which lead to a different strata movement rule from shallow mining. Therefore, the appropriate surface subsidence prediction method for deep backfilling mining needs to be developed.
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Control of surface deformation and overburden movement in coal mine
Based on this, taking method 1 as an example, the mining and backfilling sequence design is shown in Fig. 7. The mining and backfilling sequences of method 2/ method 3 are similar to that of method 1. Download: Download high-res image (823KB) Download: Download full-size image; Fig. 7. The mining and backfilling sequence of …
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Wongawilli roadway backfilling coal mining method – a …
Wongawilli roadway backfilling coal mining method 347 Typically, the average mining speed in a MR was about 20 m/d with the average filling speed in a MR was about 40 m/d; thus, the filling work ...
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Research on mixed mining technology with backfilling and caving methods
Zhang et al. (2017b) summarized the mining technology of a near full-rock protective coal seam, a gas drainage method and the key techniques of fully mechanized gangue backfilling, and the ...
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Coupled discrete element–finite difference method for analyzing
The coupled discrete element–finite difference method to simulate solid backfilling mining is implemented by the following steps: 1. A continuum mesh is initially created for the FLAC to model the rock strata and coal seam with a predetermined geometry and boundary conditions. The FLAC model is cycled to reach initial equilibrium …
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Experiences of Underground Mine Backfilling Using Mine …
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 …
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Backfilling Materials for Underground Mining, Volume II
The backfill mining method is a widely used mining method in the major mines of China, which can maximize the recovery of mineral resources and protect the …
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Short- and long-walls backfilling pillarless coal mining method
PDF | On Jun 30, 2022, Mengbo Zhu and others published Short- and long-walls backfilling pillarless coal mining method | Find, read and cite all the research you need on ResearchGate
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An intelligent optimization design method of the …
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 …
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Essential Guide to Backfilling in Mining Operations …
Backfilling is the process of refilling an excavated hole. This is a common practice in construction and—the main focus of this guide—in the mining industry. Backfilling in underground mines is a fundamental part of the …
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