Lighting & Hazard Signs. For both operational efficiency and worker safety, sufficient lighting is an absolute necessity. In general, 5 foot-candles of illumination is enough for tunneling, but 10 foot-candles is required for shaft heading during drilling, mucking and scaling. Also, operators must ensure that any and all hazard signage is …
The following are some common types of mechanical equipment used in coal mines: Coal mining machinery and equipment: Drilling rig: used for drilling blasting holes. ... reduce costs, and improve safety. In the coal mining industry, the continuous development of mechanical technology has had a positive impact on mine operations, …
Federal Mine Safety & Health Act of 1977 10 Code of Federal Regulations Part 77 16 ... Safeguards for Mechanical Equipment - CFR Part 77 138 Questions and Review 146 . 3 CHAPTER 4 ... equipment used in the operation of a coal mine, means equipment, other than permissible electric face equipment, to which an approval plate, label, or other ...
Causing many severe problems for coal mine workers and the surrounding environments, coal mining is recognized as one of the riskiest operations worldwide (Nieto et al., 2014).In China, coal mine accidents still cause casualties and property losses, despite the recent application of safer modern underground mining methods (He et al., …
Coal mine safety accidents can be mainly classified into roof, gas, mechanical or electrical, water disaster, transport, blasting and others. By querying the data of the China State Administration of Mine Safety and China Coal Mine Statistical Yearbook, the basic data of the occurrence and death toll of various coal mine safety …
b) In room and pillar mining, the recovery rate is about 40– 60%. Whereas in long wall mining method, the recovery rate is as high as up to 75%. c) In thick coal seams, long wall mining method is used, whereas in thin coal seam, room and pillar method is used. It has thickness ranging from 0.75 to 4.0 m.
The safety of coal mine production involves many aspects, including mine ventilation, fire and explosion prevention, gas drainage, coal dust prevention, the safety equipment employed, etc. Due to the complex stress of the surrounding rock, the support and arrangement of roadways play a key role in ensuring the safety of coal mining and …
Figure 7.1 Classifications of equipment fires in the United States coal mines during the period 1990–1999. Under the surface coal mine equipment fires category, there were 140 equipment fires and 56 of them resulted in 56 injuries. Similarly, under the underground equipment fires category, there were 26 equipment fires and 10 of them caused 10 …
Mining safety is recognized as one of the factors influencing the mining industry's long-term viability. Therefore, we did a bibliometric analysis to take stock of safety management in the coal mining industry. This study suggests a three-step strategy, comprising literature extraction and screening, bibliometric analysis, and discussion, to …
The technology has increased productivity by 5–10 per cent. A recent economic assessment estimated the total net benefits arising from the research at $785.6 million 1. CSIRO's technology has also contributed to improving the working conditions and safety of coal mine employees. The improved accuracy of longwall mining operations reduces ...
On the other hand, in open-pit coal mining, the most dangerous main criteria at 1st level hazards are slopes and benches (0.575), while the most dangerous sub-criterion at 2nd level hazards are ...
Coal mine water hazard accidents are frequent in China, and are second only to coal mine gas mishaps (Lin et al. 2020). Over the long course of coal resource mining, China has developed coal mine water hazard control prevention theories, technology, and supporting equipment systems (Cui et al. 2018a, b; Hu 2003, 2005; Zhao et al. 2018).
Mechanical failure was identified as the main cause of mining accidents and the application of software or safety models is essential to minimize the number of mining accidents.
Underground coal mining often causes subsidence, goaf landslides, fissures, and even hazard chains, seriously damaging the ecological environment. To address the ecological vulnerability of mining areas is key to exploring the development characteristics and failure mechanisms of surface multi-hazards. Taking the Shuiliandong coal mine as …
During the period 1990–1999, 76 injuries were caused by 197 equipment fires in coal mining operations in the United States [5]. During the period 1983–1990, about 20% of …
Fiber Optic Methane Gas Sensors Methane (CH 4) is by far the most important gas in coal mine safety monitoring, explosion occurs upon ignition when methane level in air reaches 5–16%.Conventional catalytic-type methane gas sensors contain a sensing resistor element with platinum heater, which will burn in combustible …
Equipment lack: Mechanical defects: Technological environment: 4: Equipment failure: 5: Unreliable safety ventilation: Ventilation system defects: 6: ... The coal mine safety managers can create safer conditions for workers and reduce the possibility of risky behaviors by improving the underground working environment, …
Checklists and the Workplace Risk Assessment and Control technique were used to identify the mining operation specific safety hazards for the following hazard …
The Administrator for Coal Mine Safety and Health (CMS&H) has the primary responsibility for enforcing the Mine Act and implementing the standards and regulations relating to …
Major coal mine accidents from 2001 to 2018 in China. Full size image. Therefore, understanding the development and mechanism of safety in coal mine …
Coal mine production safety concerns the measures taken to prevent accidents in mines and address and control accidents quickly and effectively in order to ensure the safety and health of the miners. The safety of coal mine production involves many aspects, including mine ventilation, fire and explosion prevention, gas drainage, …
Considering the average uniaxial compressive strength of the coal material used in this study (i.e., around 15 MPa) and the in situ three-dimensional stress state during deep coal mining (σ 2 = σ 3 = 0.6~0.8 σ 1), a maximum confining pressure of 10 MPa was selected for the experiment to investigate the mechanical behaviors and precursory ...
Fig. 2 illustrates the workface layout of proposed new fully mechanical mining method in extremely thick coal seam, which combines with large mining height and top-coal caving mining methods, named LHTCM. In the extremely thick coal seam, it can be divided into three layers with A, B and C.Firstly, pressure-relief mining (stage Ⅰ) …
To investigate the mechanical behaviors and precursory characteristics of coalburst subjected to in situ stress conditions, multiaxial cyclic loading experiments …
The study revealed the major hazards resulting in fatal incidents for continuous mining equipment, shuttle cars, roof bolters, LHD s and hoisting system were due to failure of victim to respect ...
Abstract and Figures. This study attempts to evaluate the field performance of various mining equipment used at the development galleries of coal mines. These are hand-held and jumbo rock drills ...
To illustrate the hazard of coal mine water inrush, data on coal mine accidents (since 2001) are collected and hundreds water inrush accidents were analyzed in depth. Empirical, statistical analysis and case study method were used to conduct the research. ... People that have unsafe behavior and tools (mechanical equipment or …
Conference: international Conference on NextGen Technologies for Mining and Fuel Industries, 15-17 Feb., New Delhi, India. ISBN 978-93-8
The sustainable development of coal resources and coal mine safety has always been an important long-term development plan for the Chinese government(Shi and Xi, 2018).In the case of economic importance, coal has accounted for more than 70% of China's energy consumption for a long time and contributes significantly to local …
Coal mining, extraction of coal deposits from the surface of Earth from underground. Coal has been used since the Bronze Age, 3,000 to 4,000 years ago, and was the basic energy source that fueled the Industrial Revolution of the 18th and 19th centuries. ... Despite the hazard of fire and explosion, there were still a large number of …
China's coal mine production situation is grim and various types of accidents occur frequently, and gas explosion accidents are the highest incidence of coal mine accidents. The authors selected 200 gas explosion accidents of coal mine enterprises in recent years, and extracted a large number of workers' unsafe behaviors. …
1. Large Mining Trucks. To move materials around a mine site, workers need heavy-duty trucks. Also known as off-highway trucks, large mining trucks include both powerful mechanical models and environmentally friendly electric drive models.. Unlike conventional trucks, these mining vehicles have extra-large tires to support the heavy …
The traditional identification of spontaneous combustion hazard of coal in China is unilateral and inaccurate, which is singly attributed to the properties of coal. Based on current research findings on coal fires, we've reconsidered the influential factors that lead to the spontaneous combustion of coal seams, and have ultimately built a …
the coal mine electromec hanical equipment monitoring system, th e electromechanical equipment monitoring is realized. In the design and development of the sy stem, there are still some areas worthy
Abbasi (2018) had focussed on discussing the safety issues related to the mining industry and developed a matrix to rank the hazards according to their impact on the industry. In preventive measures, the author suggested that periodical and frequent maintenance of electrical and mechanical equipments used in mines . Vlachos (2018) …