Digging deeper: Mining methods explained | Anglo …
Find out how 3 types of mining techniques work to mine shallow or deep deposits: open-pit, underwater, & underground mining.
Advantages of Backfill Mining Method for Small and …
Additionally, the review examines the prospects and potential applications of backfill mining methods within the context of SM mines in China, emphasizing their …
The spatial distribution and expansion of subsided …
The topography-based method relies on the topography data, however, the data during the past years are not available due to the topography in underground mining area is time-varying. In addition, this research focus on only the extraction of wetlands rather than the all types of land cover in underground mining area in eastern China.
In-situ stress measurements and stress distribution
The theory, equipment and method of hydraulic fracturing stress measurement used in underground coal mine roadways in China are presented. A quality assurance system and a quality ranking scheme were developed for hydraulic fracturing stress measurements under specific conditions encountered in Chinese underground …
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 potential safety hazards and environmental pollution risks. Only through the identification of suitable development paths can these mines improve their economic and environmental benefits, …
Advances in coal mining technology and sustainable mining …
The following section covers mining practices internationally with a brief summary of the status of coal mining in China, India, and Australia. The last section …
Coal mining
Coal mining - Underground mining: In underground coal mining, the working environment is completely enclosed by the geologic medium, which consists of the coal seam and the overlying and underlying strata. Access to the coal seam is gained by suitable openings from the surface, and a network of roadways driven in the seam then …
Dynamic mechanism triggering an underground-mining …
The karst mountain region in Southwest China frequently experiences massive geo-disasters due to its geology and ongoing human engineering activities. As such, studies on the prevention and control of such disasters are urgently required. Using geological field surveys, a block discrete element method (UDEC) simulation, and …
Underground Mining Methods, Classification of
Underground mining methods are applied under different mining technical conditions, coordinating and integrating different mining and excavation equipment, shaft and tunnel engineering, mining technology, and ground pressure management in ore blocks or mining areas.
Frontiers | Numerical Method for Predicting and Evaluating …
Keywords: underground mining, coal pillar stability, data mining, artificial intelligence, pre-control technique. Citation: Shan P, Sun H, Lai X, Dai J, Gao J, Yang P, Li W, Li C and Yan C (2022) Numerical Method for Predicting and Evaluating the Stability of Section Coal Pillars in Underground Longwall Mining. Front.
Coalbed methane emissions and drainage methods in underground mining …
During underground mining practices, methane-related accidents make a great percentage of all the underground mining disasters and pose great danger generally, including, for example, coal and gas outburst and methane explosion. These methane incidents always result in large property losses and casualties.
Research progress of monitoring, forecasting, and prevention …
As one of the dynamic disasters of coal mines, rockburst seriously affects underground safe coal mining. Based on the laboratory test, field test, and theoretical analysis, this study proposed the principle of the rock burst induced by the combination of dynamic and static stresses and divided such rock burst into three types, including …
Mining Method Selection and Optimization for Hanging-Wall …
In order to smooth ore production during the transition from open pit to underground mining at Yanqianshan Iron Mine, China, it is necessary to select an appropriate mining method to operate simultaneously open-pit mining and underground mining for inner-slope (hanging-wall) ore-body. Based on practical geologic setting of …
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' …
Digging Deeper: Mining Methods Explained
Open-pit, underground and underwater. These are the three main methods of mining we use at Anglo American to extract our products from the ground.
Overview of Underground Metalliferous Mining | SpringerLink
To cope with the faster excavation targets from underground is one of the major challenges for mineral industries. Selection of suitable mining method plays an important role over here. The conventional way for selecting suitable mining method is based on the physicomechanical properties of host rock and orebody (Deshmukh 2009; Hartman 2002 ...
Mechanism of Overlying Strata Migration and Failure During Underground
Keywords: mountainous carbonate areas in southwestern China, thin-bed mining, structure of overlying strata, HWCFZ, calculation method. Citation: Li J, Li B, Gao Y, Cui F, He K, Li J and Li H (2022) Mechanism of Overlying Strata Migration and Failure During Underground Mining in the Mountainous Carbonate Areas in Southwestern China. Front.
IJERPH | Free Full-Text | Developmental Features, Influencing …
Mining–induced ground fissures are one of the major geological disasters affecting coal mines. In recent years, many effective monitoring methods have been developed to explore the developmental characteristics and nature of mining–induced ground fissures for being treated scientifically. This paper is mainly on the development …
Comparison of Underground Coal Mining Methods Based on …
When mining underground coal resources, different mining methods have different levels of environmental impacts. To identify the mining method with the least …
The evolution of thick coal seams mining methods in …
Fig.1. Percentage of energy consumption 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.
Trends in underground mining for gold and base metals
Underground mines account for 40 percent of global mining operations across numerous commodities and deposit types and employ a variety of mining …
A novel sealing material and a bag-grouting sealing method …
To test the sealing effect of the bag-grouting sealing method and the DE, engineering test was carried out in No. 207working face of the No.2 coal mine at Huangling mining area in Shaanxi Province, China.
Sustainability | Free Full-Text | Overview of Solid Backfilling
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 …
Numerical Investigation on Stratum and Surface …
Underground mining methods are selected first, including the room and pillar mining method, cement backfill mining method, and caving mining method. Then, roof deformation and surface subsidence in underground phosphorite mining by these three methods are analyzed based on numerical simulations.
Coal Mine Solid Waste Backfill Process in China: Current …
Concurrently, China initiated research and implementation of solid filling mining technology in coal mining regions. Solid filling mining is a coal mining method …
Developmental Features, Influencing Factors, and Formation …
Mining-induced ground fissures are one of the major geological disasters affecting coal mines. In recent years, many effective monitoring methods have been developed to explore the developmental characteristics and nature of mining-induced ground fissures for being treated scientifically. This paper …
Mining footprint of the underground longwall caving extraction method
Mining technology with low disturbance to the natural environment of the mining region: The surface subsidence can be controlled by the backfilling method and caving mining. Based on the analysis of the contribution sources (agricultural production, meteorology, hydrology, and transportation), we can plan the route of heavy metal …
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 …
Environmental issues from coal mining and their solutions
It intensifies the loss of water and soil in the hilly mining areas of China. Because underground coal mining is the dominant mining method in China subsided land reclamation should be the main concern for land reclamation. In general, mined land reclamation follows three steps: reshaping the terrain, resoiling and replanting.
Innovation for sustainable mining: Integrated planning of underground …
Coal supplies essential materials for social development. In many cases, however, the separation planning of underground coal mining (UCM) and mine re…