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This paper studies the Roșia Jiu quarry area in Romania. This research highlights the working method of hydraulic excavators and the values of particles released into the atmosphere by them. Improving technological equipment not only helps build a better world, but also restores and preserves the environment. The measurements were made during 2020,...
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With the increasing depth and intensity of coal mining, there is an increasing risk to the working face due to high static load and periodic breakage of the roof. The relation between the support and the surrounding rock under static–dynamic coupling loading disturbance is an important factor affecting the stability of the working face. In this stu...
This paper studies how the activity of hydraulic excavators found in the Rosia quarry of Jiu affects the environment. For this study we chose the Caterpillar 323D L and 323 D LN hydraulic excavators. The study took place over a period of 30 days. These days we have collected data on the noise level and the level of PM 10 particles in the quarry. Ca...
The efficiency of quarry hydraulic excavators will depend on several factors, namely the climatic conditions of the area where hydraulic excavators are used, the degree of air pollution (pollination), the performance of the structural parts of the excavator, the reliability of the hydraulic system, the performance and cleanliness of the hydraulic w...
The 4.9 Mw earthquake of 11 November 2019 at Le Teil (France) occurred at a very shallow depth (about 1 km), inducing the surface rupture of La Rouvière fault. The question was raised shortly after about the potential impact of a nearby surface quarry. Thanks to satellite differential interferometry, here, we revealed the existence of a secondary s...
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... It contains all areas of AutoMine's remote and autonomous operations, as well as the complete OptiMine process optimization and analytics suite, which is used in underground drillers and LHDs. In 2018-2021, Komatsu developed its own autonomous solutions for earthmoving equipment, including Komtrax and Komvision [39]. Komtrax provides insight into equipment operations by gathering real-time data such as the vehicle's location, operating hours, and machine status. ...
With the continuous innovations in cutting-edge engineering sciences, advancements in robotic autonomous systems (RAS) have opened up new possibilities in the mining sector, showing promise in replacing humans for various tasks. While RAS has been playing a pivotal role in developing intelligent mining machines, a timely and thorough survey of these applications is still lacking. This paper aims to bridge this gap by chronologically exploring the industrial progress of conventional mobile robotic platforms in mining, such as drilling rig, impact hammer, earthmoving equipment, and haulage truck. The review primarily highlights the real-world industrial implementations in mining automation rather than delving deeply into technological and methodological developments. Given that every robotic autonomous mining system (RAMS) must be thoroughly evaluated during the design phase before deployment in the real world, we furthermore perform a comprehensive review of performance evaluation methods pertinent to the design of RAMSs from both the individual level and overall system level. The paper concludes with an overview of future research and development trends in this evolving field.
... Figure 6 shows the scheme of such drillings. [4][5][6][7][8] At the level of environmental protection, horizontal drilling technology is very efficient and has the great advantage of eliminating field excavations and works performed by horizontal drilling do not cause discomfort in rail or road traffic, also bypassing previous underground obstacles (pipes, cables and other). ...
... This method even has an execution cost 20-30% lower than other methods [6][7][8]. This paper studies the efficiency of horizontal drilling works in coal mines in the Gorj basin compared to other known drilling methods. ...
Dewatering involves reducing level of flooding of field by various technical measure. This paper studies the methods of dewatering involving reducing the level of flooding of field by various technical measure water from surface quarries with the help of horizontal drilling. Horizontal drilling does not cause discomfort at the level of exploitation works, transport and storage of deposits being a very efficient method. This has a great advantage both in terms of efficiency and the level of the environment because it eliminates land cover.