It can also be removed by morphological operation. The smaller open-pit coal mines can be removed by patch size while the larger (Fig. 5 a4) is difficult to remove. For crater, it can be removed by shape index; Wu's algorithm identifies open-pit mines by morphological methods without samples (Wu et al., 2019). Finally, at present, we can ...Web

Taking an open pit mine of an inclined coal seam in Xinjiang, China, as an example, the coal price variation trend obtained by the ISSA–SVR prediction method is applied to the limit adjustment ...Web

Environmental impact studies in coalfields in India: a case study from Jharia coal-field. Renew. Sustain. Energy Rev. (2016) M. Samavati et al. ... The starting mechanism of PM in the dumping operation process of open pit mines may be summarized as collision, wind force, and induced airflow. The results of the present study …Web

Highwall mining is an adaptation of auger mining. Instead of an auger hole, an entry into the coal seam is made by a continuous miner, remotely operated from a cabin at the surface. The cut coal is transported by conveyors behind the miner to the outside. Using a television camera, the operator can see and control the miner's progress.Web

In 2021, one of the mines producing the gassiest coal in Australia – Tahmoor coal mine run by SIMEC Mining – received approval to extend the mine life by 10 years to 2032. Annual methane emissions are estimated to be 1.6 million tonnes of CO 2 -e, increasing the state's already hefty annual coal mine methane emissions by 14%.Web

Abstract Reasonable production capacity is related to the economic benefits of an open-pit coal mine. This study analyzes the relationship between the working face …Web

Open pit mining method is one of the surface mining methods that has a traditional cone-shaped excavation and is usually employed to exploit a near-surface, nonselective and low-grade zones …Web

open pit [6,13]. The transition to a new type of transport can take a long time and involves changing the opening workings' parameters and transport communications [6]. The strategy of transition to a new stage of open-pit mining involves changing the parameters of the open pit at the end of mining. The main parameter that is changed is …Web

Open pit mines are one of the main sources of coal in China. As such, they play an important role in the country's socioeconomic development (Ghose and Majee, 2007). However, open pit mining necessitates the use of large mobile equipment and blasting, which together generate PM of different particle sizes in the process of operation.Web

Innovation has an important role in improving the productivity, safety and sustainability of mining operations. Historically, ore transport was done by diesel trucks, but with the commitment to reduce CO2 emissions and increase mine safety, mining companies have invested in innovative, more sustainable ore transport technologies. The …Web

Cast blasting–dragline stripping technology is the most advanced mining technology used in open-pit mines. For a long time, however, its precision has been hindered. In this paper, we aim to improve the precision of cast blasting–dragline stripping technology and promote its intelligent design. We present a method to determine cast …Web

The production cycle of open-cast coal mines generally includes drilling, blasting, loading, hauling and coal preparation activities. Individual optimization of these activities does not mean that the whole system is optimized. This paper proposes a cost model considering all activities in mining cycle and system-wide approach to minimize …Web

Based on the characteristics of the coal mining semicontinuous process system, this paper analyzes the interaction between production operations such as mining, loading, transportation, …Web

The depths of open-pit mines have been increasing in the last few decades. This transformation generates a vast amount of waste rock material per unit mining area imposing a significant economic, …Web

The share of open-pit coal mining in major coal-mining nations like the United States, Australia, Russia, and India is more than 50%, and some countries reach more than 90% (He et al., 2006; Zheng …Web

In mining industry the mineral resource extracted by both opencast and underground mining. In both cases the extraction is done by loosening the mineral through mainly perform the operations of DRILLING and BLASTING. In India many of the mines are working on with opencast mining and most of the mining operations are performingWeb

to control the breakage process through effective distribution of explosive energy ... The mine is situated in central India near the city of Nagpur in the state of Maharastra (Figure 1). 2.2. ... Mechanisation at Durgapur open pit coal mine Operation Make Speci¢cations Numbers Drilling RECP 600 150 mm (drill diameter) 1Web

In this study, geographic information system (GIS)-based methods and applications utilized for mine development were reviewed. Three types of GIS-based studies, namely studies on mine planning, operation, and environmental management, were examined to describe the role of GIS as a decision-making support tool in mine …Web

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 …Web

The objective of this paper is to quantify the ecological costs of open pit coal mining and to incorporate such costs in an ultimate pit optimization algorithm to …Web

In a large open-pit coal mine in India, the minimum specific fuel consumption (SFC) of a 100t dump truck at the haulage distance of 0.65 km is 0.39 l/cu.m, while the SFC for the same truck at a distance of 2.97 km is equal to 0.59 l/cu.m (Sahoo et al., 2018).Web

A pit, sometimes called a borrow, is dug in an area. This pit becomes the open-pit mine, sometimes called a quarry. Open-pit mines can expand to huge dimensions, until the coal deposit has been mined or the cost of transporting the overburden is greater than the investment in the mine. Open-pit mining is usually restricted to flat …Web

Carefully engineered blasting will be an even more important aspect of successful open pit mining as already know in the past and moreover in the future as: (1) pits become deeper and steeper, (2) quality separation to avoid dilution and ore losses …Web

large open-pit coal mine in China and adjacent to a city, making it a special value subject. Lignite was the main type of coal produced in this mining area. e annual average wind speed was 4.6 m/s ...Web

open-pit mining Mining. a method of mining in which the surface excavation is open for the duration of mining activity, employed to remove ores and minerals near the surface …Web

2.2. Numerical Modelling. Firstly, Figure 3 shows the end-slope morphology at different stages of open-pit mining with extremely thick inclined coal seams. In Figure 3(a), L 1 and N 1 are the location of the working slope and the location of the inner dump before advancement, and L 2 and N 2 represent the location after advancement, …Web

Open cast coal mining involves various operations e.g overburden removal, drilling, blasting, mineral loading, haulage and …Web

The open-pit coal mining has the characteristics of high recovery and high safety factors, open-pit coal mining can bring huge economic benefits to the mining area4–7. In the...Web

Batilaran, a non-tribal resident of Ned, whose family owns about 30 hectares (70 acres) of agricultural land affected by the coal mining operation, said San Miguel has been buying land at 80,000 ...Web

High performance drilling is key to successful open-pit mining, with two principal areas of operation: blasthole drilling, and drilling presplit holes that help to enhance pit wall …Web

The open pit is opening the orebody from the surface by separate removal of ore and associated waste rocks. It is the most economic option for a deposit up to that depth where the economic ratio of ore and waste can sustain. There are many advantages in open-pit mining method namely:-Full visualization of exposed orebody and negligible ore loss,-Web

The operation of open-pit coal mines produces a large amount of dust particles, ... Simulation process. The research objective was an open-pit mine in Inner Mongolia, which was a typical large open-pit coal mine in China and adjacent to a city, making it a special value subject. Lignite was the main type of coal produced in this …Web

Dewatering management is critical for new mines. A major consideration when starting an open pit or underground mine is to ensure that it will have the most efficient, cost-effective, and low-carbon system for controlling water - whether from under the ground or rainfall. Saleem Khawaja September 12, 2022. Share this article.Web

Kumar, 2014). For example, the landslide accident at the Shengli East No. 2 open-pit coal mine directly caused the mine to stop production and, ultimately, the company running the mine became insolvent (Fan et al., 2016). We collected information concerning landslide disasters at 20 open-pit coal mines in ChinaWeb

The system is essentially a serial process, and the cooperation between the pieces of equipment will seriously affect the performance of the system, so it is particularly important to study the …Web

Abstract This paper presents a phase planning method specially designed for coal deposits with nearly horizontal, bedded coal …Web