vibrating machine in a coal mines

Mining Screens, Separation and Vibration

Mining screens, separation and vibration solutions The run-of-mine (ROM) ore undergoes a series of separation, screening and classification to become suitable for further processing. Choosing an appropriate combination of tailored screening, separating, and conveying solutions can reduce processing costs and boost overall energy efficiency and ...

Peak particle velocity of vibration events in underground coal mine …

The vibration events in underground coal mine can be divided into whole mine (WM) event, working face (WF) event and heading face (HF) event, and the WM event normally has the lowest dominant frequency and maximum PPV. Rock burst may occur when PPV causes its corresponding stress increment to reach the triggering value, and …

CDC

Exposure to whole-body vibration (WBV) can lead to pain and discomfort of the heavy earthmoving machinery operators. In this paper, WBV measurement of 110 …

Occupational Exposure of Dumper Operators to Whole-body Vibration …

These results confirmed the previous researches. 23,24 Atal et al. 20 studied the WBV exposure level for the dumper drivers in two open-pit coal mines, India. They used the Bayesian Network method ...

Analysis of drilling vibration characteristics of …

OPEN. Analysis of drilling vibration characteristics of anchoring system in coal mine. Miao Xie 1, Yuqi Li 1*, Hongyu Zhang 1,3, Zhiyong Yang 1,3, Ze Ren 1,2 & Rendong Nie 1. A …

Prediction of ground vibration due to mine blasting in a

Hosseini, S., Pourmirzaee, R., Armaghani, D.J. et al. Prediction of ground vibration due to mine blasting in a surface lead–zinc mine using machine learning ensemble techniques.

Deployment of Continuous Miner in under Ground Coal Mine…

The continuous miner technology (CMT) is being adopted extensively in underground coal mines of India as mass production technology. This technology potentially eliminates the two-unit operating, namely the drilling and blasting. This elimination helps for better strata control and avoids the drillers working in unsafe …

Advances in screening technology in the mining sector

The most common screening machines in the mining industry are linear vibrating screens and circular vibrating screens. In the case of linear vibrating screens (Fig. 4), the entire screening unit is excited into a linear oscillation by force exciters, double-shaft drives or unbalance motor drives. ... Especially in large coal mines, boiler coal ...

Static Grizzly Screen as a Rock Separator

Vibrating Grizzly Screen. A vibrating grizzly screen has been developed as a distinct improvement over the fixed grizzly now in such wide use. It combines the functions of screening and feeding the …

Vibration Monitoring for the Mining Industry | CTC

4-20 mA Output Proportional to Vibration in Acceleration, Side Exit 2 Pin Connector Dynamic Vibration Analysis allows for trended data and machine health diagnostics. However, Dynamic Vibration Sensors can be paired with CTC's SC300 Series Signal Conditioners to create a hybrid approach for both Process Monitoring and …

Surface Coal Mining Machine Operators

TYPES OF MACHINES EXAMINED Whole body vibration was measured on eight different types of machines in use in U.S. surface coal mines. The machine types and number …

Whole body vibration and its impact on dumper operators in coal mines …

The comparison showed that about half of all surface coal mining machine operators can be expected to be exposed to vibration exceeding the fatigue decreased proficiency criterion, whereas only 7% ...

Assessment of the ground vibration during blasting in mining …

Rock blasting is one of the most common and cost-efficient rock excavation techniques in mining and civil engineering projects 3,4.Rock blasting is a prominent mining technique for metal and non ...

Occupational hazards survey among coal workers using

In the work of [39], the risk factors of hand-arm vibration syndrome among workers who work with tools that produce vibration in a northern china coal mine have been investigated. The prevalence ...

Digital computer-based vibration monitoring in …

Abstract: A description is given of the main developments, philosophy, and current state applications of computerized, underground mining machine vibration monitoring as …

vibrating machine in a coal mines

sible areas of coal mines. Two of these prototype MMCRDM's were evaluated by PRC and MSHA in laboratory and field tests, primarily for response to machine vibration. Field evalu- ation was conducted in a continuous miner section of an oper- ating coal mine. the machine-mounted monitor was conducted as a joint venture …

Experimental Study on Comprehensive Real-Time Methods to

The geological condition is essential for mining design and disaster control in underground coal mines. The present research focuses on the real-time assessment method on rock mass condition during drilling boreholes. In situ comprehensive experiments were carried out using three methods, which are measurement while drilling (MWD) system, vibration …

Vibration Analysis of a Three-Drum Shearer for a …

The vibration dynamic response of a large mining height coal shearer in the vertical plane is the displacement curve of each part of the shearer body in its …

Assessment of vibration exposure of mine machinery …

Assessment of vibration exposure of mine machinery operators at three different open-pit coal mines. June 2022. Journal of the Southern African Institute of …

Applications of Microseismic Monitoring Technique in Coal Mines…

China's coal mines have to extend to greater depths for the exploitation of more mineral resources, and they have suffered catastrophic mining-induced disasters, such as rockbursts, water inrushes, coal and gas outbursts, and roof fall accidents. The microseismic monitoring technique is a practical tool for mine safety management, which …

Vibrating Screen Machines

Widely used at coal mines . These types of rotary screens are closed types which has a high screening efficiency. It is best use in mine industry for coal slime and coal slot. ... potatoes, chips, mineral, cement or concrete …

(PDF) Analysis of drilling vibration characteristics of …

e anchoring system for coal mines can r ealize the function of following the machine. e roadheader is sepa- rated from the anchoring sys tem during the tunneling operation, which can realize the ...

Analysis of drilling vibration characteristics of …

Analyzing the vibration characteristics of anchor drilling rigs and drill pipes plays an important role in studying the stability of anchor drilling rigs, achieving precise …

McLanahan | Coal

Coal. From mine face to eliminating tailings ponds, McLanahan provides solutions for both surface and underground coal mining in all aspects of the operation. The company offers a full range of feeding, crushing and sampling equipment, as well as washing and dewatering systems that can remove impurities and increase the heating value of your coal.

Whole Body Vibration Exposure of Surface Coal Mining Machine …

Field measurements utilizing a seat pad accelerometer were made on 61 surface coal mining machines in order to quantify the vibration levels experienced by the operators. ... The comparison showed that about half of all surface coal mining machine operators can be expected to be exposed to vibration exceeding the fatigue decreased proficiency ...

Whole-Body Vibration Exposure vis-à-vis Musculoskeletal …

Out of a total of 220 subjects, 110 were dumper operators exposed to vibration, and 110 were different types of workers who were not exposed to machine vibration but were working in the mining premises. The distribution of collected data of case and control groups from the coal mines is presented in Table 1. Simultaneously, a questionnaire ...

Design of a monitoring and protection system for a vibrating coal …

Coal washing plants in coal mines use vibrating screens to size coal according to customer specifications and plant design. Screens are mostly used in coal washing plants, which are further used to size Run-Off-Mine coal (ROM) material after crushing them to a reduced size using roller crushers to classify bulk material and de-watering. However, …

Application of Vibration Monitoring for Mining Machinery …

Zimroz, R.: Role of signal preprocessing in local damage detection in mining machines. Diagnostyka 2, 33–36 (2008) Google Scholar Jabłoński, A., Barszcz, T., Bielecka, M.: Automatic validation of vibration signals in wind farm distributed monitoring systems. Measurement 44(10), 1954–1967 (2011) Google Scholar

A Scientific Exploration of Blast-Induced Ground Vibration

The total estimated coal reserve in the block is 562 million tonnes (MT), with an extractable coal reserve of 289 MT after accounting for mining losses, coal blocked against mine boundaries, and barriers against the river, considering a 1:5 cutoff ratio. The Bansloi River flows in west to east direction along the southern boundary of the project.

Discomfort survey of dumper operators exposed to whole-body vibration

Exposure to whole-body vibration (WBV) can lead to pain and discomfort of the heavy earthmoving machinery operators. In this paper, WBV measurement of 110 dumper operators has been conducted in three opencast coal mines, followed by a discomfort survey. Vibration measurement revealed that the mean frequency-weighted …