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Mines - DOAJ

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Last Updated: 18 September 2022

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Investigating the destressing mechanism of roof deep-hole blasting for mitigating rock bursts in underground coal mines

Rock burst is one of the most difficult challenges limiting the safe and high-efficiency mining of deep-buried coal seams, and roof deep-hole blasting is commonly used in coal mines in high burst zones to prevent rock bursts. The results of the empirical analysis indicate that RDHB reduces the local stress and stiffness of roof rock, thereby minimizing the possibility of coal failure and upgrading the rooftop-coal-floor system's energy release mode. RDHB was applied to an isolated coal pillar in a coal mine for mitigating rock bursts, as well as the strain pattern of the isolated coal pillar before and after RDHB was discovered using advanced seismic velocity tomography. The findings show that RDHB can effectively reduce stress concentration in the target area and cause anxiety to the surrounding areas.

Source link: https://doi.org/10.1080/19475705.2022.2122594


Regenerating Cultural Identity through Industrial Heritage Tourism: Visitor Attitudes, Entertainment and the Search for Authenticity at Mills, Mines and Museums of Maritime Canada

In addition, a comprehensive industrial museum provided a platform for further investigation of the ways by which industry has contributed to cultural identity in Maritime Canada. According to a detailed study, visitor responses to a detailed survey indicate that a focus on industrial heritage is a highly valued feature of respondents'u2019's cultural identity. Similarly, historians and historians of industrial heritage may be encouraged to create heritage landscapes that prioritise entertainment and spectacle, while downplaying key historical, socioeconomic, and political characteristics of the former industry.

Source link: https://doi.org/10.14324/111.444.ljcs.2015v30.005


Application of IoT‐Fog based real‐time monitoring system for open‐cast mines—A survey

Abstract Fog computing archetypes has been in recent spotlight for its ability to utilize resources efficiently by the Internet of Things network, which has a large number of end-u2010devices. Since the FC approach addresses these needs depending on the situation/user, new opportunities have arisen in mining. Since these services take place closer to point of data generation, it emphasizes how important aspects of fog aid the network in achieving lower network traffic, reduced latency, resource utilisation, and real data processing and storage.

Source link: https://doi.org/10.1049/wss2.12011


Assessing Ground Vibration Caused by Rock Blasting in Surface Mines Using Machine-Learning Approaches: A Comparison of CART, SVR and MARS

Ground vibration triggered by rock blasting is unavoidable hazard that can cause significant harm to buildings and living areas. The most accurate predictor of ground vibration is peak particle velocity. This research aims to develop a computer to predict PPV in opencast mines. The MARS model outperformed other models in this research with lower error and R 2 of 0. 951, followed by SVR, CART, and empirical predictors. The latest MARS scheme can be easily implemented by field engineers for the prediction of blasting noise with reasonable certainty.

Source link: https://doi.org/10.3390/su141711060


Bio-accumulation effects of heavy metals Pb, Zn and Cd on Procecidochares utilis parasitism to Eupatorium adenophorum at Suzu metal mines, Yunnan

Procecydochares uses is an essential parasitic rodent to Eupatorium adenophorum. The aim of this research was to explore heavy metal transfer and accumulation in the soil-E. adenophorum system, as well as their effect on the parasitic effect of P. utilising the E. adenophorium to E. adenophorum to measure the effect of heavy metals on the obligate parasitic insect and its host, the obligate parasitic insect and its host. P. utilising a single plant and branch is positively correlated with distance, according to the results. With an increase in distance from the mining area's center, the metals content of the soil in E. adenophorum and P. utilisation has decreased dramatically. These metals are expected to migrate to E. adenophorum and P. by the soil-E. adenophorum-P. utilizing technique that is expected to influence parasitic activity.

Source link: https://doi.org/10.1016/j.heliyon.2022.e10381


The Solution of the Main Fan Station for Underground Mines Being Decommissioned in Terms of Reducing Energy Consumption by Ventilation

Depending on the needs of a particular mine, a particular mine can be selected, but more significant are the requirements for the period of actively mining operations. The requirements of the main fan station often exceed those of the original mining decommissioning process, which can often exceed its requirements. In such a situation, it usually turns out that the existing fan station's parameters significantly exceed the miner's requirements. The main fan stations are devoid of control systems, and even if they do have them, they do not allow for a dramatic decrease in the volume flow rate. Modernizing the station to meet new demands of the mine is costly and time-consuming. In two Polish coal mines, the solution suggested in the article has been implemented and is currently in progress in a third mine. The examples in the article clearly show the energy savings of switching main fans that are too large.

Source link: https://doi.org/10.3390/en15134612

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions