scholarly journals A simulation experiment study to examine the effects of noise on miners’ safety behavior in underground coal mines

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jing Li ◽  
Yaru Qin ◽  
Lei Yang ◽  
Zhen Wang ◽  
Ke Han ◽  
...  
Keyword(s):  
Coal Mine ◽  
Noise Level ◽  
Simulation Experiment ◽  
Coal Mines ◽  
Health And Safety ◽  
Mining Industry ◽  
Noise Pollution ◽  
Working Environment ◽  
Safety Behavior ◽  
Underground Coal Mines

Abstract Background Noise pollution in coal mines is of great concern. Personal injuries directly or indirectly related to noise occur from time to time. Its effects impact the health and safety of coal mine workers. This study aimed to identify if and how the level of noise impacts miners’ safety behavior in underground coal mines. Methods In order to study the influence of noise on miners in the mining industry, we built a coal mine noise simulation experiment system, and set the noise test level at 50 dB ~ 120 dB according to the actual working environment at well. We divided the noise gradient into 8 categories and conducted 93 experiments, in which we aim to test miners’ attention distribution, fatigue, and reaction under each level, and the experimental results were analyzed by SPSS22.0 software. Results The results show that the increase of environmental noise level will have an impact on the attention, reaction, and fatigue. The noise is positively related to the fatigue, the noise is negatively related to the attention and reaction. In the noise environment, the sensitivity of the personnel to optic stimuli is higher than that to acoustic stimuli. The test indicators of attention, fatigue, and reaction will change significantly, when the noise level is greater than 70 ~ 80 dB. Conclusions From the perspective of accident prevention, the noise level can be controlled within the range of less than 70 ~ 80 dB, which can control the occurrence of accidents to a certain extent.

scholarly journals Assessment and Quantification of Risks Associated with Small Scale Mining, Khyber Pakhtunkhwa, Pakistan

2020 ◽  
Vol 11 (3) ◽  
pp. 65-69
Author(s):  
Zahid Ur Rehman ◽  
Saira Sherin ◽  
Sajjad Husain ◽  
Noor Muhammad ◽  
Talat Bilal
Keyword(s):  
Coal Mine ◽  
Ventilation System ◽  
Coal Mines ◽  
Health And Safety ◽  
Mining Industry ◽  
Small Scale ◽  
Khyber Pakhtunkhwa ◽  
Data Analyses ◽  
Roof Fall ◽  
One Year

Small scale mining industry is considered more hazardous than other industries worldwide. Large number of workers receive minor and major injuries leading to disabilities or loss of lives due to frequent accidents in mines. Main causes of accidents in mines are fall of roof, improper ventilation system, gases, fires and mine explosions. Beside these hazards, violation of rules and regulations for mine workers are common, which also cause accidents. This paper is focused on issues associated with the health and safety of workers of Cherat Coal Mines (CCM), Abbottabad Coal Mine (ACM) and Abbottabad Soapstone Mine (ASM), Pakistan. The collected data were analyzed with SPSS computer statistics software. The data analyses indicated that the lack of education and violation of safety laws cause accidents in mines. Results show that problems that were rated higher by more than 60% of workers included slide and fall, dust, roof fall and explosive related hazards. In survey more than 50% of the workers admitted the existence of gases, fire and low height mines are common hazards in their workplace. The results also indicated that not only workers but management are also affected by accidents. More than 17% of worker in CCM faced serious accidents up to 3 times during one year. Up to 26% of workers in CCM, 13% in ACM and 15% in ASM suffered accidents for which they had 3 workdays off. It has been concluded that training should be arranged, especially the safety related training on regular basis to reduce the risk of accidents.

Wireless Sensor Network

2017 ◽  
pp. 145-160 ◽  
Author(s):  
Pankaj Kumar Mishra ◽  
Pratik ◽  
Manish Kumar
Keyword(s):  
Wireless Sensor Network ◽  
Radio Frequency ◽  
Sensor Network ◽  
Coal Mine ◽  
Coal Mines ◽  
Wireless Sensor ◽  
Physical Parameters ◽  
Underground Coal Mine ◽  
Rf Signals ◽  
Underground Coal Mines

Wireless Sensor Network (WSN) has an enormous prospective in hazardous areas such as underground coal mines. However, there is a need to ensure safety while installing WSN in underground coal mine as it is hazardous in nature and WSN radiates Radio Frequency (RF) signals which can be an eminent source of ignition. Henceforth when the underground coal mines are equipped with WSN there is a need to set the threshold limits of different physical parameters in order to eradicate such hazards for enabling safety. Therefore, in the present chapter, attempts have been made to assess the required safety for WSN while installing in underground coal mines. In addition, various types of hazards associated with underground coal mines and their consequences are elaborated in details with a glimpse to mitigate them with the use of WSN.

scholarly journals Development of a Protective Enclosure for Remote Sensing Applications—Case Study: Laser Scanning in Underground Coal Mines

Resources ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 56 ◽  
Author(s):  
Mark Dunn ◽  
Peter Reid ◽  
John Malos
Keyword(s):  
Laser Scanning ◽  
Coal Mines ◽  
Mining Industry ◽  
Electrical Equipment ◽  
Regulatory Requirement ◽  
Sensing Applications ◽  
Mapping System ◽  
Underground Coal Mines ◽  
Remote Operations

Sensing for equipment location and mapping in explosion risk zones such as underground coal mines is a difficult proposition due to the regulatory requirement for certified protective enclosures to safely house the required complex electrical equipment. This paper provides a case study for the process involved in creating and implementing an optical-grade enclosure for use in these environments. The result of this process has been the creation of ExScan®, a 3D laser mapping system that is providing step-change capability for remote operations and automation in the underground coal mining industry.

Development of a New Type of Hydraulic Drilling Car Used in Coal Mine

2012 ◽  
Vol 522 ◽  
pp. 556-559 ◽  
Author(s):  
Ming Zhu Zhang ◽  
Yong Dai ◽  
Bo Guo
Keyword(s):  
Coal Mine ◽  
Coal Mines ◽  
Hydraulic Pressure ◽  
Directional Drilling ◽  
Coal Gas ◽  
Drilling Equipment ◽  
Underground Coal Mines ◽  
Safety Production ◽  
New Type ◽  
Structure Layout

Coal gas accident is the main threat to the safety production in coal mine,it needs a safe and efficient drilling equipment to detection and drainage in the gas area.At present,the equipments detect and drainage in underground coal mines are mainly fission rigs,which move time-consuming, and the efficiency of drilling is low.This paper introduces a new kind of full hydraulic drill car used in coal,it includes the integral design of the car, the structure layout, the drilling arm and the main parts of design ideas.The new drill carriage adopts the caterpillar vehicle structures,full hydraulic pressure drives,it can automatically change the drill rod, prevent bit-stuck device,can freely passage in the narrow roadway,arrived at the reservation of the drilling position and carries on the omni-directional drilling,it can meets various mine construction requirements, and it has a broad market prospect.

Mining Gassy Coal Seams with a Three-Entry Panel Layout

2012 ◽  
Vol 524-527 ◽  
pp. 613-617
Author(s):  
Jun Hua Xue ◽  
Sheng Xue
Keyword(s):  
Coal Mine ◽  
Methane Concentration ◽  
Ventilation System ◽  
Coal Mines ◽  
Distribution Characteristics ◽  
Coal Seams ◽  
Gas Drainage ◽  
Gas Emissions ◽  
Underground Coal Mines

To address the issue of high gas emissions in mining gassy coal seams in underground coal mines, the concept of a three-entry panel layout with a retained goaf-edge gateroad and a “Y” type ventilation system is introduced in this paper. With the layout and ventilation system, distribution characteristics of methane concentration in the panel goaf is analyzed, technologies of gas drainage with boreholes drilled from the retained goaf-edge gateroad and into stress-relieved overlying and underlying seams are described, and an application case of such layout in a coal mine is also presented in this paper.

Maximum Acceptable Weights of Lift for Common Coal Mine Supply Items

1992 ◽  
Vol 36 (10) ◽  
pp. 654-658
Author(s):  
Sean Gallagher ◽  
Christopher A. Hamrick
Keyword(s):  
Energy Expenditure ◽  
Coal Mine ◽  
Coal Mines ◽  
Metabolic Cost ◽  
The Other ◽  
Task Duration ◽  
Underground Coal Mines ◽  
Different Levels ◽  
Considerable Experience ◽  
Rock Dust

A series of psychophysical lifting studies was conducted to establish maximum acceptable weights of lift (MAWL) for three supply items commonly handled in underground coal mines (rock dust bags, ventilation stopping blocks, and crib blocks). Each study utilized 12 subjects, all of whom had considerable experience working in underground coal mines. Effects of lifting in four postures (standing, stooping under a 1.5 m ceiling, stooping under a 1.2 m ceiling, and kneeling) were investigated together with four lifting conditions (combinations of lifting symmetry and lifting height). The frequency of lifting was set at 4 per minute, and the task duration was 15 minutes. Posture significantly affected the MAWL for the rock dust bag (standing MAWL was 7% greater than restricted postures and kneeling MAWL was 6.4% less than stooped); however, posture interacted with lifting conditions for both of the other materials. Physiological costs were found to be significantly greater in the stooped postures compared to kneeling for all materials. Other contrasts (standing versus restricted postures, stooping under 1.5 m ceiling versus stooping under 1.2 m ceiling) did not exhibit significantly different levels of energy expenditure. Energy expenditure was significantly affected by vertical lifting height; however, the plane of lifting had little influence on metabolic cost. Recommended acceptable workloads for the three materials are 20.0 kg for the rock dust bag, 16.5 kg for the ventilation stopping block, and 14.7 kg for the crib block. These results suggest that miners are often required to lift supplies that are substantially heavier than psychophysically acceptable lifting limits.

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