Objective To investigate the status of coal dust hazard classification and lung function damage in a large coal mine in Shanxi From January to June in 2019 51 coal dust posts and 598 workers exposed to coal dust were selected from a large coal mine enterprise in Shanxi Province The coal dust exhaled dust samples were collected and
This work represents an attempt to study how the efficiency of coal mining depends on the characteristics of a coal mine and fluctuations of coal/ resource prices
Numerous researchers have utilized receiver function analysis to investigate the crust mantle structure of the South China Block For example Zhang et al 2021 collected waveform data from some fixed and mobile stations in the South China region and reconstructed the crustal thickness and Vp/Vs ratio using the H κ method The results indicate a close
Analysis of microbial communities in an opencast coal mine and in grassland soil covering and surrounding this mine and their biomethane production potential contributes to a better understanding of global microbial biodiversity in coal mine environments and makes a contribution to the knowledge of the synthetic microbiology Expand
DOI / Corpus ID 134633645; Time function model of dynamic surface subsidence assessment of grout injected overburden of a coal mine article{Binglong2018TimeFM title={Time function model of dynamic surface subsidence assessment of grout injected overburden of a coal mine} author={Wang Binglong and Jialin Xu
Mining condition of Mumba coal mine The mine is located in the northwest of Dhaka 26 the capital of Bangladesh with a geographical location of 25°31′ 25°34′ N and 88°57′ 88°59
Mining condition of Mumba coal mine The mine is located in the northwest of Dhaka 26 the capital of Bangladesh with a geographical location of 25°31′ 25°34′ N and 88°57′ 88°59
Methane in coal seams originates considerably by thermogenic activities during coalification process Recently its origin through biogenic activities of microbes acting on the organic constituents of coal has been proposed [1] [2] As the world wide demand of natural gas is expected to increase with the increase of population the mined or abandoned coal seams can
Functions of the Ministry of Coal The Ministry of Coal is concerned with exploration development and exploitation of coal and lignite reserves in India The subjects field assignments associated with CCDA assistance under Coal Mine Conservation and Development Rules 1975 amended in 2011 ; opening/ re opening permission of seams of
Despite their important role preliminary work is required to study the role of the soil fungal community in the reclamation of coal mine dump ecosystems firstly to characterize the composition and function of the soil fungal community and to monitor changes during the reclamation chronosequence and secondly to assess the changing composition and function
Download Citation Situation of coal dust hazards and its damage of pulmonary function of a large scale coal mine enterprise of Shanxi province Objective To investigate the status of coal dust
main functions of the platf orm for coal mine automation technology based on the Internet of Things Underground coal mining req uires advanced instrumentation to ensure long term gro wth and
Underground coal mine environment is hazardous and accident prone The present work proposes an internet of things IoT based smart under ground mine monitoring system at the excavation site The developed system establishes a communication link to enable data transmission between underground smart devices and above the ground monitoring
The second is the production function theory which discusses the relationship between input and output in the production process and holds that production efficiency depends on the use efficiency of input factors and the significant costs associated with equipment replacement impact the evaluation of the production mine by coal
Abstract Aim Pilot study to examine the impact of shift work on cognitive function in Chinese coal mine workers Background Shift work is commonly used in modern industries such as the coal industry and there is growing concern over the impact that shift work has on miners work performance and personal well being
Coal mine intelligence is the core technical support used for the high quality development of the coal industry and is of great significance for improving coal mine safety risk monitoring early warning systems and comprehensive disaster management 2 Intelligent coal mine construction in China has made great progress
With the increasing depth of coal mining the quantitative evaluation of the degree of geological structure development is becoming increasingly important for the control of mine water hazards in coal mining areas Understanding the complexity of geological structure development can improve the safety and efficiency of coal production At present various
Taking the 1031 working face of Wugou Coal Mine in Huaibei Anhui China as the research subject 1 a three dimensional 3D spatial information dynamic prediction method was proposed for high water level coal mining subsidence areas by combining the Knothe time function based on the probability integration method PIM and the principle of
Abstract There are plenty of monitoring methods to quantify gas emission rates based on gas concentration measurements around the strong sources However there is a lack of quantitative models to evaluate methane emission rates from coal mines with less prior information In this study we develop a genetic algorithm interior point penalty function GA
