Review of Solution Methodologies for Open Pit Mine …
A comprehensive overview of recent contributions to open pit mine production scheduling problem spanning from exact and heuristics to recent meta-heuristic methods is provided. ABSTRACT The open pit mine production scheduling problem determines a sequence of three-dimensional, notional block extraction that maximises …
Acid mine drainage from coal mining in the United States – …
It includes strip, auger, highwall, open pit, and area mining. After mining, coal companies reclaim sites by grading, replacing topsoil, and revegetation driven by specific set of soil, air, and water quality regulations, and health and safety standards. ... which tends to lower the pH of the solution (Simate and Ndlovu, 2014). In the Eq.
Monitoring the ecological restoration effect of land
The Pingshuo mining area is located in Shuozhou city, northern Shanxi Province (Fig. 1), in the eastern part of the Loess Plateau.The Pingshuo open-pit coal mine is the largest open-pit coal mining area in China, covering an area of approximately 400 km 2 and comprising the Antaibao, Anjialing and East open-pit mines, with …
Tracing Mining's Threat to U.S. Waters
Coal mining in this Canadian province began more than a century ago, though the methods changed in the 1980s, when underground mining was largely abandoned for open pits.
Research on boundary optimization of adjacent mining areas in open pit
The main coal seam of the Zhundong Open-pit Coal Mine is a huge inclined coal seam with a thickness of 70 m, and the tendency of the coal seam is to gradually decline from east to west.
Flooding of Open Pit and Underground Mines in the Chelyabinsk Coal
Abstract The authors examine the present-day hydrogeological situation and its post-mining phase forecast in the Chelyabinsk Coal Field. Geotechnical facilities in the areas of Krasnaya Gornyachka Mine and Kopeisk and Korkino Open Pit Mines are discussed. The problems to arise during flooding are identified. The hydrological …
Different Types of Mining | 4 Types of Mining
Open-pit mining is where large areas of land are excavated to create a hole. The ore is then brought to the surface via conveyor belts. ... This method is used to extract coal as the pillars hold up the weight of the overlying rock. ... In-situ mining, also known as in-situ leaching or solution mining, is a method used to recover valuable ...
Revolutionizing Open-Pit Coal Mining in Indonesia with …
With digital twin technology, the solution provides map services, spatial data services, and 3D services based on SuperMap iServer to reproduce the real scene of open-pit coal mines. At the beginning of the mining project, the terrain data can be imported, and geographical grids of different degrees of fineness can be constructed according to ...
What are the main methods of mining? | American …
1 of 2. next ›. There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits. Surface mines are typically used for more shallow and less valuable deposits. Placer mining is used to sift out valuable metals from sediments in ...
12.10: Open-Pit Mining
12.10: Open-Pit Mining. Open-pit mining, or open-cast mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow. This form of mining differs from extractive methods that require tunneling into the earth, such as long wall mining. Open-pit mines are used when deposits of ...
Mining | IDS GeoRadar
IDS GeoRadar products for Mining applications. IDS GeoRadar offers innovative, reliable and comprehensive solutions for proactive and reactive monitoring of slope displacements in open-pit mines.. From very slow movements to rapid displacements and rockfall, the Mine Monitoring portfolio offers the perfect solution for both known and unknown …
Study on MICP dust suppression technology in open pit coal mine
With the recent increases in energy demands, the dust hazards of coal mining caused by transportation, loading and unloading and other processes are becoming increasingly serious. To control dust in open pit coal mines more environmentally friendly and efficiently, and to promote the use and develop …
(PDF) OPEN PIT COAL MINING WITH INTELLIGENT MINING …
PDF | It's all about the processes of Open Pit Coal Mining with intelligent mining equipments and intelligent mines are the way of the future, and they... | Find, …
Comprehensive evaluation of potential coal mine dust …
The Wucaiwan open-pit coal mine is located in the Western margin of Eastern Junggar Coalfield (Fig. 1 B), where the Jurassic Badaowan, Sangonghe, and Xishanyao Formations are the coal-bearing strata (Fig. 1 C).Among these, the Middle Jurassic Xishanyao Formation is the predominant coal-bearing unit, and, it is made up …
Study on MICP dust suppression technology in open pit coal mine
Electron microscopy images of different kinds of solutions sprayed on the coal dust after 48 h are shown in Fig. 1. Fig. 1 a shows the electron microscopy images of water acting on coal dust. As illustrated in the figure, water does not leave obvious traces after drying on coal dust, and the coal dust particles are still in an independent …
Minas Moatize Coal Mine, Tete
BHR started mining of thermal coal from the first open pit, Trial Pit 1 (TP1), in the second quarter of 2011. The first wash plant (a temporary coal handling and preparation plant) was commissioned in the first half of that year. The plant is expected to process the coal at a rate of 100tph. It is equivalent to 600,000tpa of run-of-mine (ROM) …
Study on Optimization of Coal Truck Flow in Open-Pit Mine
A semicontinuous process system consisting of a single-bucket excavator, truck, crushing station, and belt conveyor is the main coal mining process system of a large-scale hard coal open-pit mine. Through analyzing the coal mining production process, the key issues of coal mining truck flow optimization are obtained. Statistical …
Feasibility Evaluation of Highwall Mining in Open-Pit Coal Mine …
Highwall mining is a method that involves using a continuous highwall miner system (CHM) to extract coal from the remaining coal seams, which has proven to be an effective and safe method for extracting coal after open-pit mining. However, application cases globally have shown that the feasibility of highwall mining in open-pit coal mines …
Digging deeper: Mining methods explained | Anglo …
Open-pit mining Open-pit is one of the most common mining methods used and starts from the earth's surface, maintaining exposure to the surface throughout the extraction period. The excavation usually has stepped sides to ensure the safety of the miners and a wide ramp where equipment can travel, allowing the product to be removed efficiently ...
Analyzing Characteristics of Particulate Matter Pollution in Open-Pit
The particulate pollution in the open-pit coal mines of China is particularly severe in winter. The aim of this study is to understand the pollution characteristics of particulate matter (PM) in winter and provide a basis for the prevention and control of particulate pollution. We took the problem of PM concentration at the bottom of the …
Minerals | Free Full-Text | Hybrid Model for Optimisation of …
The final design of the open pit mine did not include the entire deposit but only those parts where mining was economically justified. This means that there is potential for future expansion of the pit boundaries along certain sub-zones. For this reason, the potential expansion of the open pit limits is included in the list of AHP analysis factors.
A Data-Driven Approach to Control Fugitive Dust in Mine …
Surface mining is frequently classified into open pit and strip mining based on the type of the deposit. Strip mining is a mining method that is commonly implemented to flat and tabular deposits such as coal and is generally considered as being safer and economically efficient compared with underground mining.
Coal mining
Open-pit mining. In open-pit mining of the coal seam, several benches are established in both the overburden strata and the coal seam. The open-pit method is generally practiced where thick coal seams are overlain by thick or thin overburden; it is also used for mining steeply pitching coal seams. In the beginning stages of mining, considerable ...
Study on Crust-Shaped Dust Suppressant in Non-Disturbance Area of Open
Dust pollution in open-pit coal mines severely restricts the green development of mines. Therefore, dust control has become an important requirement for the sustainable development of the mining industry. With the goal of dust pollution prevention and control in open-pit coal mines, this paper puts forward the concept of a non …
Being realistic about coal mine rehabilitation in …
Children in East Kalimantan play near abandoned open-pit coal mines located near their houses. Image courtesy of the Mining Advocacy Network (Jatam). Being realistic about coal mine …
Research on production capacity planning method of open …
1 Citations. Metrics. Abstract. Reasonable production capacity is related to the economic benefits of an open-pit coal mine. This study analyzes the relationship …
Applied Sciences | Free Full-Text | The Influence of Rainfall …
Among the slope hazards caused by rainfall, not all of them occur directly during storm washout, and the wetting–drying cycles' effect on the rainfall–evaporation process is an important cause of shallow slope instability. In this study, taking the slope of the open-pit coal mine dumps in Cam Pha, in the Quang Ninh region of Vietnam, as …
Optimization of working slope configuration in seasonal …
The seasonal stripping open-pit coal mine working slope often uses bench groups for cycle advancing operation to reduce advance stripping and save the stripped …
Ultimate pit optimization with environmental problem for open-pit coal mine
According to the flow chart, an initial ultimate pit is optimized by the original unit costs (without ecological costs). The original unit costs are 1.79 US$/t and 2.39 US$/m 3, respectively, for coal mining and rock removal.The initial ultimate pit is obtained in traditional way, which takes the maximum economic benefit as the objective function …
Review of Solution Methodologies for Open Pit Mine …
Mehmet Cigla. The open pit mine production scheduling problem determines a sequence of three-dimensional, notional block extraction that maximises net present …