In a coal mine, air leakage exists in some roadways through doors and other ventilation structures inevitably. Based on this opinion, there are different views on whether these roadways must be assigned airflow in coal mine ventilation design. This paper analyses some relevant regulations and criteria on the designed air quantity of coal mines. Then, based on the ventilation design of the Guizhou Yizhong Coal Mine, through the study of the calculation of needed air quantity of every working place and its distribution method in coal mine ventilation design, this paper puts forward that explosion-proof door, safety exit, and other short distance roadways with ventilation structures need not assign airflow in coal mine ventilation design, while some long-distance roadways need. Additionally, it presents the main reason to support this opinion, gives the distribution method of inner air leakage quantity, which comes with the calculation of the designed mine total air quantity, puts forward the remedy method for the air leakage through ventilation structures in a coal mine ventilation system, then offers the mine operator with the basic opinions for the day-to-day planning and effective operation of a coal mine ventilation system.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11091158 | PMC |
| http://dx.doi.org/10.1038/s41598-024-61787-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Complete genome sequence of Pseudarthrobacter sp. NIBRBAC000502770 from coal mine of Hongcheon on Republic of Korea.
BMC Genom Data
January 2025
Department of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea.
Objectives: The data were collected to obtain the complete genome sequence of Pseudarthrobacter sp. NIBRBAC000502770, isolated from the rhizosphere of Sasamorpha in a heavy metal-contaminated coal mine in Hongcheon, Republic of Korea. The objective was to explore the strain's genetic potential for plant growth promotion and heavy metal resistance, particularly arsenate and copper.
View Article and Find Full Text PDFStudy on influencing factors and prevention measures of coal-rock-gas compound dynamic disaster in deep coal mine mining.
Sci Rep
January 2025
College of Resources, Shandong University of Science and Technology, Taian, 271019, Shandong, China.
Because coal seam mining with high geostress and high gas pressure is prone to coal-rock-gas compound dynamic disasters, a disaster energy equation considering the influence of roof elastic energy is established, and a disaster energy criterion considering the influence of roof elastic energy is derived and introduced into COMSOL software to conduct numerical simulations of coal seam mining under different geostress and gas pressures. The study revealed that the increase of ground stress reduces the gas pressure required for disaster occurrence. When the gas pressure reaches a certain value, the disaster will occur even if the ground stress is very small.
View Article and Find Full Text PDFStudy on the linkage mechanism between key strata fracture in overburden and surface subsidence during caving mining in extra-thick coal seams.
Sci Rep
January 2025
Haohua Hongqingliang Mining Company, Ltd, Ordos, 014300, Inner Mongolia, China.
Caving mining in extra-thick coal seams induces large-scale overburden movement, leading to more intense fracture processes in key strata, more significant surface subsidence, and frequent dynamic disasters in mines. This study, using the N34-2 caving face of the 17th coal seam at Junde Mine as a case study, aims to investigate the time-varying linkage mechanism between surface subsidence, microseismic characteristics, and fracture scales of the overburden's key strata under such mining conditions. Based on Timoshenko's theory, a bearing fracture mode for the overburden's key strata is proposed, and corresponding fracture criteria are established.
View Article and Find Full Text PDFFirst-principles study of CO and HO adsorption on the anatase TiO(101) surface: effect of Au doping.
Phys Chem Chem Phys
January 2025
Shanxi Coal International Energy Group Co., Ltd., Taiyuan 030000, China.
Photocatalytic reduction of CO will play a major role in future energy and environmental crisis. To investigate the adsorption mechanisms of CO and HO molecules involved in the catalytic process on the surface of anatase titanium dioxide 101 (TiO(101)) and the influence of Au atom doping on their adsorption, first-principles density functional theory calculations were used. The results show that 1.
View Article and Find Full Text PDFSource-oriented health risk assessment of soil potentially toxic elements based on Monte Carlo simulation in the upper reaches of Wei River Basin, China.
Environ Geochem Health
January 2025
Shandong Bureau of China Metallurgical Geology Bureau, Qingdao, 266109, China.
The natural environment and public health are gravely threatened by the enrichment of soil potentially toxic elements (PTEs). To explore the contamination level, sources and human health risks posed by PTEs, high-density soil sampling was carried out in the upper Wei River region (UWRR). The results demonstrated that the pollution risk and ecological risk in UWRR as a whole were at a low level, but there were moderate or higher ecological risks of Hg and Cd in some areas.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!