scholarly journals The impact of roster changes on absenteeism and incident frequency in an Australian coal mine

2003 ◽  
Vol 60 (1) ◽  
pp. 43-49 ◽  
Author(s):  
A Baker
Keyword(s):  
Coal Mine ◽  
Australian Coal ◽  
The Impact ◽  
Incident Frequency

Experiences of a prolonged coal-mine fire

2018 ◽  
Vol 27 (5) ◽  
pp. 534-545 ◽  
Author(s):  
Rebecca Jones ◽  
Sarah Lee ◽  
Darryl Maybery ◽  
Alexander McFarlane
Keyword(s):  
Coal Mine ◽  
Extensive Literature ◽  
Deep Uncertainty ◽  
Content Type ◽  
Mine Fire ◽  
Long Duration ◽  
Sense Of Security ◽  
Local Residents ◽  
Coal Mine Fire ◽  
The Impact

PurposeThe purpose of this paper is to examine the perspectives of local residents regarding the impact of the long-duration Hazelwood open cut coal mine fire in rural Australia.Design/methodology/approachA qualitative approach was undertaken involving 27 in-depth interviews with adults who lived in the town of Morwell, immediately adjacent to the coal mine fire.FindingsParticipant concerns focussed upon fear and confusion during the event, the perceived health effects of the smoke, anger towards authorities and loss of a sense of community and sense of security. One of the significant ways in which people managed these responses was to normalise the event. The long duration of the event created deep uncertainty which exaggerated the impact of the fire.Research limitations/implicationsUnderstanding the particular nature of the impact of this event may assist the authors to better understand the ongoing human impact of long-duration disasters in the future.Practical implicationsIt is important to provide clear and understandable quality information to residents during and after such disasters.Originality/valueWhile there is an extensive literature exploring the direct social and psychological impacts of acute natural disasters, less qualitative research has been conducted into the experiences of longer term critical events.

scholarly journals Stress Distribution Around Mechanized Longwall Face at Deep Mining in Quang Ninh Underground Coal Mine

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Manh Tung BUI ◽  
Tien Dung LE ◽  
Trong Hung VO
Keyword(s):  
Stress Distribution ◽  
Sea Level ◽  
Coal Mine ◽  
Coal Mines ◽  
Longwall Face ◽  
Geological Condition ◽  
Deep Mining ◽  
Roof Fall ◽  
The Impact ◽  
Quang Ninh

Quang Ninh underground coal mines are currently in the phase of finishing up the mineralreserves located near the surface. Also, in this phase, a number of coal mines have opened and preparednew mine sites for the extraction of the reserves at greater depth. Several mines have mined at -350 mdepth and are driving opening excavations at -500 m depth below sea level. The mining at greater depthfaces many difficulties, such as a significant increase in support and excavation pressures. The longwallface pressure is mostly manifested in great magnitude that causes support overloaded and jumped andface spall/roof fall. This paper, based on the geological condition of the Seam 11 Ha Lam coal mine,uses the numerical program UDEC for studying the impact of mining depth on stress distribution aroundthe longwall face. The results show that the deeper the mining is, the greater the plastic deformationzone is. The peak front abutment stress moves closer to the coal wall, mainly concentrating on theimmediate roof and top coal. The top coal is greatly broken, and its bearing capacity is decreased. Somesolutions to the stability of roof strata are proposed, and a proper working resistance of support isdetermined. Additionally, the paper suggests that the starting depth for deep mining in Quang Ninhunderground coal mines should be -350 m below sea level.

scholarly journals Impact of Mine Panel Size on Hydraulic Permeability of Weakly Cemented Strata

2020 ◽  
Vol 12 (6) ◽  
pp. 2396
Author(s):  
Gangwei Fan ◽  
Shizhong Zhang ◽  
Bobo Cao ◽  
Dongsheng Zhang ◽  
Chengguo Zhang
Keyword(s):  
Coal Mine ◽  
Design Method ◽  
Maximum Flow ◽  
Mining Operation ◽  
Hydraulic Permeability ◽  
Optimal Size ◽  
High Porosity ◽  
Panel Size ◽  
The Impact ◽  
Overlying Strata

The effect of underground coal mining on groundwater, ranging from minimal to severe depending on the mined-out panel size, is primarily associated with the change in ground hydraulic permeability. This paper presents a novel panel design method, taking consideration of reducing water loss during the mining operation, which is based on evaluating and ranking the impact of panel size on the hydraulic permeability of weakly cemented strata. The permeability test results of weakly cemented rock samples collected in the Yili No.4 Coal Mine in Xinjiang, China strongly indicates that, in contrast to common rock, their post-peak permeability during the total stress–strain process is lower than the initial permeability due to high porosity and the presence of clay minerals. A numerical modeling based on strain–permeability functions reveals that the post-mining permeability distribution in the weakly cemented overlying strata could be subdivided into three zones: the permeability reduction zone, the permeability restoring zone, and the permeability high-increment zone. The impact significance of different size factors on the post-mining permeability of overlying strata can be ranked in decreasing order as follows: mining height, panel width, and panel length, the quantification of which was based on the variance analysis of such indices as maximum pore pressure and maximum flow velocity. Based on the above findings, the optimal size of panel 21103 in the Yili No.4 Coal Mine was determined and validated by water level field observations.

scholarly journals Signal Game Analysis on the Effectiveness of Coal Mine Safety Supervision Based on the Affective Events Theory

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Xue Yang ◽  
Yang Tian ◽  
Kai Feng ◽  
Juan Yang ◽  
Shu-hui Zhang ◽  
...  
Keyword(s):  
Equilibrium State ◽  
Coal Mine ◽  
Negative Emotions ◽  
Mine Safety ◽  
Affective Events Theory ◽  
Safety Risk ◽  
Coal Mine Safety ◽  
Affective Events ◽  
Unsafe Behavior ◽  
The Impact

The main cause of coal mine safety accidents is the unsafe behavior of miners who are affected by their emotional state. Therefore, the implementation of effective emotional supervision is important for achieving the sustainable development of coal mining enterprises in China. Assuming rational players, a signaling game between miners (emotion-driven and judgement-driven) and managers is established from the perspective of Affective Events Theory in order to examine the impact of managers’ emotions on coal miners’ behavior; it analyzes the players’ strategy selections as well as the factors influencing the equilibrium states. The results show that the safety risk deposits paid by managers and the costs of emotion-driven miners disguising any negative emotions affect equilibrium. Under the separating equilibrium state, the emotional supervision system faces “the paradox of almost totally safe systems” and will be broken; the emotion-driven miners disguising any negative emotions will be permitted to work in the coal mine, creating a safety risk. Under the pooling equilibrium state, strong economic constraints, such as setting suitable safety risk deposits, may achieve effective emotional supervision of the miners, reducing the safety risk. The results are verified against a case study of the China Pingmei Shenma Group. Therefore, setting a suitable safety risk deposit to improve emotional supervision and creating punitive measures to prevent miners from disguising any negative emotions can reduce the number of coal mine safety accidents in China.

The impact of the Hazelwood coal mine fire smoke exposure on asthma

2020 ◽  
pp. 1-15
Author(s):  
Sasha Taylor ◽  
Brigitte Borg ◽  
Caroline Gao ◽  
David Brown ◽  
Ryan Hoy ◽  
...  
Keyword(s):  
Coal Mine ◽  
Smoke Exposure ◽  
Mine Fire ◽  
Fire Smoke ◽  
Coal Mine Fire ◽  
The Impact

scholarly journals A Computing Method for Sand Inrush Quantity through a Borehole in Longde Coal Mine

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Boyang Zhang ◽  
Zhibin Lin
Keyword(s):  
Fluid Mechanics ◽  
Coal Mine ◽  
Empirical Method ◽  
Water Yield ◽  
Underground Space ◽  
Volume Flux ◽  
Aeolian Sand ◽  
Actual Result ◽  
The Impact ◽  
Computing Method

A quicksand disaster through a borehole occurred in Longde coal mine. A lot of aeolian sand, the volume of which is between 310,000 m3 and 380,000 m3, has submerged into the underground space in about 70.5 h. The volume flux of quicksand cannot be calculated accurately by the empirical method. Based on the method of fluid mechanics, an all-purpose computing method for quicksand disaster through a borehole was proposed. The result shows that the inrush volume of sand into underground space was between 310,000 m3 and 350,000 m3, which was consistent with the actual result. To apply and popularize this method, the impact laws of water yield properties of an aquifer on the volume flux were discussed. The all-purpose computing method can be suitably used for the volume flux calculation of quicksand disaster through the borehole.

Research on Bursting Liability and its Preventive Measures of -906m Deep Coal and Rock in Zhuji Coal Mine

2012 ◽  
Vol 170-173 ◽  
pp. 428-433 ◽  
Author(s):  
Dong Ming Guo ◽  
Hua Jun Xue ◽  
Li Juan Li ◽  
Jun Long Xue ◽  
Gui He Li
Keyword(s):  
Coal Seam ◽  
Coal Mine ◽  
Water Injection ◽  
Elastic Strain Energy ◽  
Hole Drilling ◽  
Energy Index ◽  
Deep Mining ◽  
Hole Drilling Method ◽  
Drilling Method ◽  
The Impact

Rock burst is a common mine dynamic phenomenon in the world, and the research on bursting liability of coal and rock is the foundation of rock burst’s prevention and treatment. This paper has a research on bursting liability of coal and rock of 11-2 coal seam which is the main coal seam of Zhuji coal mine, and through the research and analysis of coal seam burst energy index(bursting energy index, elastic strain energy index, duration of dynamic fracture) and rock seam burst energy index(bending energy index), this paper given that seam and rock in deep mining section of Zhuji coal mine has bursting liability, put forward a series of countermeasures such as the previous water injection, hole-drilling method, blasting distressing to the coal seam with the impact disaster for deep mining in Zhuji coal mine.

Analysis on the Construction of Psychological Assistance Mechanism of Emergency Coal Mine

2013 ◽  
Vol 813 ◽  
pp. 217-220
Author(s):  
Yong Xin Gao
Keyword(s):  
Coal Mine ◽  
Post Traumatic Stress Disorder ◽  
Traumatic Stress ◽  
Stress Disorder ◽  
Post Traumatic Stress ◽  
Scientific Principles ◽  
Post Traumatic ◽  
Psychological Assistance ◽  
The Impact ◽  
Mental And Physical Health

Is a huge coal mine in China, is also a State of psychological crisis intervention started later, mine will affect their mental and physical health in multiple ways, the impact could be short-lived, too, there may be long, and leads to severe mental suffering or mental disorder or post-traumatic stress disorder (PTSD) and adjustment disorders. This analysis of coal mine emergency psychological assistance, submit cooperative, universality, such as scientific principles for emergency psychological assistance. At the same time the study of coal mine emergency psychological continuity, make secondary disaster measures taken do not appear.

The Rationality Analysis of Water-Intaking and Recession about the Integration of Hongfa Coal Mine

2013 ◽  
Vol 353-356 ◽  
pp. 2541-2544
Author(s):  
Chun Han ◽  
Zhen Wang
Keyword(s):  
Water Resources ◽  
Coal Mine ◽  
Mine Safety ◽  
Coal Resources ◽  
Coal Mine Safety ◽  
Safety Production ◽  
Development And Utilization ◽  
Local Water ◽  
The Impact ◽  
Regional Water

In order to make the coal exploitation to the healthy and sustainable development, the reasonable deployment of development of coal resources insist on shutting down before the integration, with the principle of the big merging into the small and the inferior merging into the superior. Coordinating to Hongfa coal mine and Luda coal mines In Ding Qi town. By integrating, it can achieve the goal of coal mine safety production and optimization of coal resources, and also can solve some problems left over by history. Through the analysis of local water resources development and utilization, we adopt the method of rainfall to inquire runoff volume and the frequency analysis to reason the results. The results show that either status quo of the level year or planning level years, Ma Daozi village gulley can completely meet the requirements of project for water, Water intake of water is reliable and the impact is not big to regional water resources.

scholarly journals The Results of the Study of the Impact of Stacking Technologies of Coal Mine Cuts on the Environmental State of Forest Reclamation

2019 ◽  
Vol 23 (2) ◽  
pp. 42-47 ◽  
Author(s):  
I.V. Zen’kov ◽  
V.V. Zhukova ◽  
V.N. Vokin ◽  
E.V. Kiryushina ◽  
Yu.A. Anischenko ◽  
...  
Keyword(s):  
Environmental Monitoring ◽  
Coal Mine ◽  
Waste Dump ◽  
Scotch Pine ◽  
Technological Factors ◽  
Siberian Spruce ◽  
Forest Reclamation ◽  
The Impact

The results of long-term environmental monitoring of the condition of Scotch pine and Siberian spruce, planted on stackings of the Borodinsky coal mine, are presented. The height of pines and spruces at the age of 11-14 years has been established, and the influence of the main technological factors on this indicator has been investigated. The dependences of the height of trees on the composition of rocks laid in the upper layer of the waste dump are presented.

Sign in / Sign up

Export Citation Format

Share Document