(PDF) Underground mining of thick coal seams

This paper reviews underground mining methods for total thickness of a thick coal seam in single lift (TTTCSSL). Review shows the required engineering for extraction of thick seams needs to be ...

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A review of dust control/removal methods in metal mines in China

The effectiveness and reliability are directly related to the safety of underground mining operations and the surrounding environment of the mining area. ... the main objectives of this study are to (1) review the research of dust control/removal methods in metal mines in China, (2) analyze the main difficulties of dust control methods in metal ...

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Sustainable Development of Underground Coal Resources in …

Underground coal mining using longwall techniques is very common in China [13] and accounts for 90% of coal production [14]. Due to different geologic conditions, other major …

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Advantages of Backfill Mining Method for Small and …

At present, many SM mines in China still use outdated mining methods such as the retention method, room and pillar method, and crumbling method for ore body mining [7,8]. ... Balusa, B.C. Analysing the Role of Safety Level and Capital Investment in Selection of Underground Metal Mining Method. Int. J. Min. Geo-Eng. 2021, 55, 125–131.

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Innovation for sustainable mining: Integrated planning of underground …

In Poland and the Czech Republic (Frantál, 2016), partial fill mining, strip mining, and coordinated mining methods have mitigated mining-induced damage (Kwinta and Gradka, 2020). However, China is a large population density ( Li et al., 2021 ), and a large proportion and output of UCM, so MS has always been the focus of MR ( Hu et al., 2014b ).

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Failure process and three-dimensional motions of mining …

2. Study area. The Jianshanying landslide is located in Faer Town, Guizhou Province, China, and has been induced by underground mining since 2005 (Dong et al. Citation 2021; Yu et al. Citation 2020; Zhao et al. Citation 2021).The landslide boundaries before and after sliding are mapped based on optical images as shown in Figure 1.The area belongs to the western plateau of …

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Life cycle assessment of underground coal mining in China

This study performs an in-depth analysis of the environmental impacts of underground coal mining in China. Some technical measures are proposed based on the LCA …

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Coal Mine Solid Waste Backfill Process in China: Current …

Coal mine solid waste backfill is a coal mining method employed to safeguard subterranean and surface geological formations, as well as water resources, against impairment. It stands as a pivotal technical approach for realizing ecologically sustainable mining endeavors, aiming to address China's predicament of 'three down' coal pressure, coal gangue emissions, …

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Intelligent Mining Technology for an Underground Metal …

Deep underground mining will become the trend of metal mining in China [1]. To overcome the disadvantages of traditional mining methods, such as excessive resource consumption, poor operating environments, ... An underground mining truck is the main transport vehicle for underground trackless mining, and has the advantages of mobility ...

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Life cycle assessment of underground coal mining in China

Therefore, this study aims to (1) analyse the environmental burden of a typical underground coal mine in China using the LCA method; (2) obtain quantitative results of life cycle impact assessment (LCIA), including uncertainty information; and determine the key impact categories on the environment; (3) identify the key processes that cause ...

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Methodology for underground mining method …

The proposed approach is applied to a panel in Liangshuijing coal mine in China and the appropriate mining methods for this panel are ranked. ... Underground mining method selection is a multi ...

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Overview of Solid Backfilling Technology Based on Coal …

China is the world's largest coal producer country. However, large-scale coal mining has led to severe environmental pollution issues such as surface subsidence and gangue piling up. The gangue discharging amount has ranked the first in the world and coal mine enterprises are facing enormous discharging reduction pressure. This paper summarizes the research …

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Concurrent mining and reclamation for underground coal mining

Large scale underground mining of coal resources in China using longwall mining has resulted in ecological and environment problems, including surface subsidence that is considered serious due to competing interests of prime agricultural lands, food security, and regional economic development. The subsided lands must be rehabilitated soon after mining to …

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Development status and prospect of geological guarantee …

China's coal industry has developed from artificial, explosive, and general mining to mature and widely used fully mechanized and intelligent mining in current exploration and practice, and geological guarantee technology is constantly enriched and improved [14].In the early 1990s, Peng [15] proposed a geological guarantee system for safe and efficient mining of …

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Block Caving Mining Method: Transformation and Its …

In that case, underground mining methods are the only option. In addition, under-ground mining is assumed to leave fewer environmental impacts than surface mining [5]. ... China and America and also in Ukraine, India, Turkey, Bangladesh and Poland, [11–28]. In Indonesia, the longwall mining method is applied in ...

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Comparison of Underground Coal Mining …

1 School of Mining Engineering, Anhui University of Science and Technology, Huainan, China; 2 Coal Mine Safety Mining Equipment Innovation Center of Anhui Province, Anhui University of Science and Technology, …

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The Recent Progress China Has Made in Mining …

The sublevel caving method is a widely used mining method in underground mines, especially in metal mines, and in practical application, the parameters required for its typical scheme design include stage height, …

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Digging deeper: Mining methods explained | Anglo …

The underground mining methods we use include room and pillar, narrow vein stoping and large-scale mechanised mining. Room and pillar mining is a style of mining where tunnels are driven in a chess board pattern with massive square pillars between them which are gradually cut away as the work proceeds.

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Decision-making model for production and …

The research background of this study is based on three mining areas operated by a gold mining company in China shown in Fig. 6, which actively advocates the integrated exploitation of mineral ...

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Guidance and review: Advancing mining technology for …

This paper summarizes the current status and challenges of open-pit mining, underground mining (including deep underground mining, green underground mining of …

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Application of Numerical Simulation Methods in Solving …

Thus, the backfill mining method is widely used in various complex mining conditions; for example, China has advocated this mining method under these 'three mining condi-tions': mining ore bodies under water, railways, and roads and buildings [7,9]. Accordingly, at the stage of a feasibility study, it is indispensable to research mining ...

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Decreasing methane emissions from China's coal mining …

Coal mining in China largely explained the increasing trend in global anthropogenic CH 4 emissions from 2000 to 2012 ... In this study, Tier 2 method proposed by the IPCC is adopted to estimate emissions from underground mining and post underground mining. Tier 1 method is adopted to estimate emissions from surface mining, post surface mining ...

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Properties and Application of Backfill Materials in Coal Mines in China

Coal is the basic resource underpinning energy generation in China, however, constant, large-scale mining of coal results in many problems such as ecological destruction of mining areas. As a result, backfilling of solid waste underground is proposed to control strata and surface subsidence and to protect the environment. At present, these materials, such as …

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Life cycle assessment of underground coal mining in China

To meet the demand for coal, coal mining depth in China increases at the speed of 10-25 m every year. 2 With an increase in the mining depth, the difficulty and energy consumption involved in ...

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Frontiers | Optimization of mining methods for deep …

Through the optimization of mining methods, three main types of underground mining methods have emerged: bottomless pillar caving method (He et al., 2022; Wu et al., 2023; Yang et al., 2023), room pillar method (Jia et al., 2021; Huang et al., 2022; Wang et al., 2022), and pseudo inclined strip approach with subsequent filling method (Bin, 2016 ...

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The evolution of thick coal seams mining methods in China

Underground mining accounts for about 95% of all coal production in China. At the same time, 44% of coal is extracted from thick seams. Thus, the development of thick coal seams is of …

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The evolution of thick coal seams mining methods in …

drift and others. It is expected that this method will be widely used for underground coal mining in deep mines in China with difficult mining and geological conditions. 1 Introduction The overall balance of China's produced energy resources can be summarized as "Rich coal reserves, poor oil reserves, and rare natural gas".

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Research and practice of intelligent coal mine technology …

Given the coal resources in China, underground mining is the main method of extraction, with open-pit mining accounting for less than 15% of coal production. Scientific …

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Coalbed methane emissions and drainage methods in underground mining …

Due to multiple benefits mentioned above, extensive studies have been conducted on CBM emission and drainage methods in underground mining (Beaton et al., 2006; Black and Aziz, ... The parallel drilling pattern is widely used in major coal mining countries (e.g. China), because of its relatively low requirements for drilling equipment and ...

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Coalbed methane emissions and drainage methods in underground mining …

Coalbed methane (CBM) drainage in underground coal mining is of significance to guarantee mining process safety and bring valuable environmental benefits, as the drainage could help to eliminate methane-related accidents, reduce greenhouse gas (GHG) emissions and provide a source of clean energy. Due to the manifold benefits, extensive investigations have …

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Underground mining methods | PPT

12. (1)Room-and-pillar mining method: • Room-and-pillar mining is very old method applied to horizontal or nearly horizontal deposits that has been adopted and refined over the years. The method is used in both coal and non …

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