DTM open pit mine model on the basis of a point cloud …
As a result, the efficiency of data acquisition increases. On the basis of the point clouds obtained, a traditional model can be made in the form of an irregular grid of triangles, whose high ...
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Open-Pit Mining: The Human Health Hazard
The impact of open-pit mines on human health is intricately linked to their environmental consequences. Degradation of the air, water, and soil quality not only disturbs ecosystems but also the very foundations of human health that depend on these natural resources. For instance, water sources contaminated by mining can lead to a …
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Using equivalent grade factors to find the optimum cut-off grades …
The Touissit-Boubker mine (TBM) in Morocco processed Zn and Pb-containing sulfides, resulting in substantial tailings stored in open facilities from 1962 to 2002. ... The mineral supply chain in an ideal open-pit mining operation constitutes a set of sequential stages including a surface mine or an open-pit, a processing plant and a …
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Safety diagnosis of TBM for tunnel excavation and its effect …
2.1 Mining construction technology. As shown in Fig. 1, the tunnel mining method is mainly used for rock formations with poor geological conditions in construction and shallow soil.The main characteristics of deformation are fast, especially in the early period of poor self-stabilizing ability, which can easily cause surface subsidence and …
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7.2.3: Pit Terminology | GEOG 000
Crest: Exterior vertex formed by the intersection of the bench floor and bench face. Bench width: The distance between the crest and the toe measured along the upper surface. Bank width: The horizontal projection of the bench face. There are two types of benches in each open pit mine: working benches and safety (catch) benches.
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Applied Sciences | Free Full-Text | A Comparison Study of the …
In recent years, TBM has been widely applied in deep coal mining to lift the TBM tunneling efficiency and avoid accidents, and more flexible support schemes are expected and required. This research aims to evaluate the performance of the two different support schemes and to study the law of the support effect. A three-dimensional …
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Application of Unmanned Aerial Vehicle for Mapping and …
Hosting Mining Data on Open WebGIS Platform. WebGIS is a better platform to organize and distribute the UAV generated data to the web. Orthophotograph, DGPS point, mine pillars, drainage pattern, active mine pit boundary and dump encroachments along with the relevant attribute information are published as a WebGIS …
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Open-pit Mining Area Segmentation of Remote Sensing Images …
Remote sensing is an important technical means for monitoring and protecting mineral resources. However, because of the complex surface environment, very few good results have been achieved in the study of automatic open-pit mining area segmentation. Inspired by SegNet, UNet and D-LinkNet, this paper proposes a novel …
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Heavy Metal Pollution from Gold Mines: Environmental …
Open-pit mining produces eight to 10 times as much waste as underground mines because a greater amount of topsoil, overburden and barren or waste rock has to be removed. Gold mining in South Africa over the centuries has resulted in the accumulation of thousands of voluminous tailings dumps which are scattered all over the country with …
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Evaluation and Risk Analysis of Open-Pit Mining Operations
Mining of raw materials is a process that consists of several stages. In open-pit mining, material with high compressive strength is extracted by drilling and blasting and material with low compressive strength is extracted by e. g. a bucket wheel excavator. Most important influencing factors for crusher decision are compressive …
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Cycle Time Analysis of Open Pit Mining Dump Trucks
This study demonstrates a practical cycle time analysis of dump truck haulage system of "Ukhaa Khudag" open-pit coal mine located in Umnugobi Prov-ince, Mongolia. It examines the possibility ...
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A hybrid heuristic algorithm for the open-pit-mining …
1. Introduction. This work deals with the Open-Pit-Mining Operational Planning (OPMOP) problem, which involves to determine extraction rate of material from ore and waste rock pits, and to assign the equipments (shovels and mining trucks) to these pits. The objective is to determine the extraction rate at each pit in a way that production …
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Transparency on greenhouse gas emissions from mining to enable
While application of such technologies can be limited at operations such as open-pit mining, there are opportunities to implement mitigation technologies in underground mining to reduce GHG ...
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Numerical simulation of ventilation and dust
In order to study the characteristics of the ventilation and dust suppression system for open-type TBM tunneling work area in a Ø8.53 diversion project, the numerical simulation method is adopted, and a three-dimensional steady airflow model, a dust flow model as well as other related flow characteristic equation models are established by …
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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 …
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Deep Neural Network Models for Improving Truck …
The accurate prediction of truck productivity plays a pivotal role in improving the efficiency and profitability of open-pit mining operations. However, predicting truck productivity is challenging owing to the complex nature of the working conditions of the mine site. This paper proposes a deep neural network model to overcome the challenge …
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Mid-long term boundary dynamic optimization of open-pit coal mine
1. Introduction. Open-pit mining is a method of extracting mineral deposits by excavating from the Earth's surface. It works by starting at the surface and removing non-economic overlays to access profitable parts []pared with the underground mining method, open-pit mining has the advantages of high resource recovery, good safety …
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Prediction of drilling rate index from rock strength and …
Rock drillability characteristic is one of the important properties for mining and tunneling operations. The rock drillability can be determined by using the drilling rate index (DRI) for engineering applications. The present study attempts to develop a practical and convenient DRI estimation model by using rock strength and abrasivity properties. …
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Advanced analytics can help achieve fuel optimization in open-pit mining
For open-pit mining, about 45 percent of carbon emissions are typically Scope 1, of which about 35 percent comes from fuel consumed in hauling. Fuel optimization achieved by harnessing existing data and machine learning can reduce carbon emissions immediately while alternative technologies to diesel for off-highway trucks are developed …
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Home | Copper Mountain
Copper Mountain is located approximately 20 kilometres south of Princeton, British Columbia, in the Similkameen valley. This open-pit mining operation has a processing plant with a capacity of 45,000 tonnes per day. It employs conventional methods such as crushing, grinding, and flotation to recover copper concentrates, complemented by gold …
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North Korea's Expansion of Molybdenum Production
Encompassing approximately 9.94 km 2 (2,457 acres) as well as several nearby villages, the facility includes an open pit mine, a rock crusher, a 1,900-meter-long covered ore conveyor belt, a non-ferrous metal production plant, dressing and processing plants, a molybdenum factory and an earthen dam. The mine's products can easily be ...
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Preconditioning High-Strength Boulders for TBM Tunnelling …
A spherical weathering body, also called a boulder, is an element of complex geological strata and presents a significant challenge to tunnelling by a tunnel-boring machine (TBM). In this study, ground-based drilling and blasting were used to precondition boulders. To determine the specific charge needed for preconditioning blasting, model …
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Surveying in the Mining Sector | GIM International
Figure 2, Surveying a open pit mine with the Maptek I-Site 8820. Terrestrial Laser Scanning in the Mining Industry. Surveying in the mining industry, both in open-pit and underground mines, often goes hand in hand with terrestrial laser scanning (TLS), which is deployed to verify the spatial changes of mining works. Thanks to its high point ...
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Mogalakwena Platinum Mine, Limpopo Province, South …
Reserves at Mogalakwena platinum mine. The proven and probable ore reserves at Mogalakwena platinum mine are estimated at 1,195.3Mt grading at 3.07g/t of 4E (platinum, palladium, rhodium, and gold) containing 115.3Moz of 4E. Mining and ore processing. Open-pit mining using truck and shovel operation is implemented at the …
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Open-Pit Mining Definition | Anglo American
Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Open-pit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels. This surface mining technique is used when mineral or ore …
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Estimating Ore Production in Open-pit Mines Using Various …
This study aimed to develop and assess the feasibility of different machine learning algorithms for predicting ore production in open-pit mines based on a truck-haulage system with the support of the Internet of Things (IoT). Six machine learning algorithms, namely the random forest (RF), support vector machine (SVM), multi-layer …
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Optimal mining cut definition and short-term open pit …
The most common workflow in short-term open-pit planning is shown in Fig. 1.First, long-term blocks (Fig. 1 a) are divided into Selective Mining Units, or SMUs (Fig. 1 b), using blasthole data.Different estimation techniques such as kriging, inverse distance estimation, or nearest neighbor (da Silva et al., 2022) are used to populate the SMUs …
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Open pit or block caving? A numerical ranking method for selection
Open pit mining method has many advantages such as increased safety, higher production rates, more flexibility, lower cost, less operational risk, etc., so normally it considered as preferred ...
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Mesquite Gold Mine | Equinox Gold
Mesquite is an open pit, run-of-mine heap leach gold mine located in Imperial County, California, USA, approximately 200 miles south of our Castle Mountain Mine, 16 miles west of the state border …
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Open-Pit Mining | Method, Environmental Impact & Examples
Open-pit mining, also known as open-cut or open-cast mining, is a surface mining method of extracting metallic and nonmetallic ores directly from the surface.It uses a series of level surfaces or ...
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