00/03076 Coal quality as a decisive factor for controlling coal production in the Rhineland mining area, Germany

2000 ◽  
Vol 41 (6) ◽  
pp. 349
Keyword(s):  
Mining Area ◽  
Decisive Factor ◽  
Coal Production ◽  
Coal Quality

Analysis and Dispose of Deviation of Mine Belt Conveyor

2014 ◽  
Vol 608-609 ◽  
pp. 685-688
Author(s):  
Miao Zhang ◽  
Hong Liang Gao ◽  
Yang Zhang ◽  
Peng Zhan Wang
Keyword(s):  
Mining Area ◽  
Pivotal Role ◽  
Coal Production ◽  
Production Operation ◽  
Belt Conveyor ◽  
Coal Transportation

In order to improve the efficiency of coal production, the security and stability of the coal transportation plays a pivotal role. According to belt conveyor production operation of Huaibei mining area, this paper analyzes in detail the reasons of the deviation of belt and proposes some effective measures.

scholarly journals The Application of an Improved Fuzzy Comprehensive Evaluation in Coal Quality Rating: The Case Study of China

2022 ◽  
Vol 9 ◽  
Author(s):  
Feng Cai ◽  
Lingling Yang ◽  
Yuan Yuan ◽  
Farhad Taghizadeh-Hesary
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Mining Area ◽  
Utilization Efficiency ◽  
Weighting Method ◽  
Coal Quality ◽  
Carbon Neutrality ◽  
Quality Stability ◽  
Quality Rating

Coal quality rating can help reduce greenhouse gas emissions, solving the global warming problem. It becomes more important as the carbon neutrality by the mid-21st century agreement is accepted by 195 countries, including China. In this paper, an improved fuzzy comprehensive evaluation method is introduced for coal quality rating. The data used in this work are of the Hostolgoi coalfield of the Xinjiang Province of China. Six industrial analysis indicators are determined as evaluation factors by taking the coal samples of different coal seam depths in the mining area. The super-standard multiple methods and the double-weight super-standard weighting method are combined to form a comprehensive weight. The results show that most of the coal samples of this coal mine are at grades I–II, and the overall coal is with good-quality stability. The evaluation results can improve the coal utilization efficiency and provide scientific guidance for evaluating and exploiting coal resources in coal geological exploration.

Research on the Characteristics of Gas Geology in Yongshanqiao Mining Area, Jiangxi Province

2012 ◽  
Vol 164 ◽  
pp. 511-516
Author(s):  
Zhi Gen Zhao ◽  
Ming Ming Zhang ◽  
Jia Ping Yan
Keyword(s):  
Emission Rate ◽  
Mining Area ◽  
Geological Structure ◽  
Controlling Factors ◽  
Jiangxi Province ◽  
Coal Seams ◽  
Gas Emission ◽  
Gas Generation ◽  
Coal Quality ◽  
Geological Factors

The coal and gas outburst is very serious in Yongshanqiao Mining Area of Jiangxi province, so it is of significance to research the characteristics of gas geology and their controlling factors. Based on the statistical analysis of gas data during coal exploration and coal mining, the regularity is revealed of the characteristics of gas geology in Yongshanqiao Mining Area. From east to west and from south to north, the relative gas emission rate and the absolute gas emission rate tend to increase, the frequency and intensity of coal and gas outbursts rise, the gas contents also tend to increase. The controlling factors of characteristics of gas geology in Yongshanqiao Mining Area are researched in this paper. The work reveals that: corresponding to characteristics of gas geology, the distribution characteristics of coal quality, the characteristics of geological structure and the lithology characteristics of the roof and the floor of the coal seams in Yongshanqiao Mining Area present regular changes, and are all favorable to gas generation and gas preservation. So, the characteristics of gas geology in Yongshanqiao Mining Area are the result of comprehensive effects by geological factors

scholarly journals Remote Sensing Monitoring and Evaluation of Vegetation Restoration in Grassland Mining Areas—A Case Study of the Shengli Mining Area in Xilinhot City, China

Land ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 743
Author(s):  
Jiawei Hui ◽  
Zhongke Bai ◽  
Baoying Ye ◽  
Zihao Wang
Keyword(s):  
Vegetation Index ◽  
Vegetation Indices ◽  
Monitoring And Evaluation ◽  
Mining Area ◽  
Vegetation Restoration ◽  
Coal Production ◽  
Vegetation Monitoring ◽  
Mining Areas ◽  
Restoration Work

Coal production will cause serious damage to regional vegetation, especially in ecologically fragile grasslands. It is the consensus of all major countries to conduct vegetation restoration and management monitoring in areas damaged by coal production. This paper compares the adaptability of different data sources and different vegetation indices to grassland mining areas and proposes a normalized environmental vegetation index (NEVI) suitable for vegetation monitoring in grassland mining areas. Based on the Landsat and Sentinel data from 2005 to 2019, this paper uses NEVI to monitor the vegetation destruction and restoration of the Shengli mining area. The main result is that the vegetation restoration work in the Shengli mining area started in 2007 and was gradually carried out in subsequent years. The restoration effect of vegetation is significantly better in the east than in the west. The NEVI of the vegetation in the east can reach, or exceed, the level of natural vegetation in the same period. The restoration of vegetation degradation in some areas requires strengthening of management and maintenance measures.

scholarly journals Comparative study on Hydrogeological conditions of Huaihe mining area

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Xiaolin Cheng ◽  
Meichen Yu ◽  
Jiayun Zhang
Keyword(s):  
Pore Water ◽  
Quaternary System ◽  
Water Inrush ◽  
Fine Sand ◽  
Mining Area ◽  
Coal Production ◽  
Water Group ◽  
Mining Areas ◽  
Hydrogeological Conditions ◽  
Similarities And Differences

Lianghuai Mining Area is one of the 13 large coal bases in China. It is an important coal and coal production base in China. Mine water inrush accidents occur frequently, resulting in economic and human resource losses, reflecting the importance of the study of hydrogeology in mining areas. In this paper, the hydrogeological conditions of Bozhou and Huainan Panxie mine are analyzed, and the similarities and differences between the hydrogeological conditions of the two mines are summarized. The shallow pore water group in the Bozhou area is composed of the Quaternary system of the Quaternary system (Q4d) and the upper part of the upper part of the Mao Tong group (Q3m). The lithology of the aquifer is silt, silt and fine sand. The shallow pore water group of the Panxian Pancho Formation in Huainan is composed of the Upper Pleistocene of the Quaternary system and the Holocene strata. The lithology is mainly composed of fine sand. The main sources of shallow pore water supply in the two areas are precipitation infiltration, mainly for evaporation, lateral runoff, artificial mining and deep flow and discharge to the river.

Research the Structural Feature of Jibei Mining Area to Control the Gas Bearing

2012 ◽  
Vol 260-261 ◽  
pp. 284-289
Author(s):  
Hai Yan Liu ◽  
Zeng Xue Li ◽  
Da Wei Lv ◽  
Dong Dong Wang ◽  
Wen Feng Ning
Keyword(s):  
Structural Feature ◽  
Mining Area ◽  
Gas Content ◽  
Coal Bed ◽  
Coal Production ◽  
Coal Beds ◽  
Wide Range ◽  
Local Areas ◽  
The One ◽  
Gas Bearing

The mining area of Jibei is an important coal production base, which located at the northern of Jining coalfield in Shandong province. The coal beds have the wide range of distribution and thicker sedimentary thickness in Shanxi Formation. The influence of structural feature to control the gas bearing in 3 coal bed is the paper’s important content. Two conclusions can be drawn from this study. The one is that open faults in whole area facilitate gasgascoal bed gas emitted from coal bed. The other is that closed faults in the local areas hinder gas emitted from coal bed. So, the laws are that the coal bed gas content and emission quantity are generally low in the whole mining area, but higher in parts area, and there are the abnormal gas zones at the special locations, where closed faults location.

Study on Regulations of Coal Mining under Highway

2013 ◽  
Vol 734-737 ◽  
pp. 666-670
Author(s):  
Wei Nan Deng ◽  
Hua Xing Zhang
Keyword(s):  
Coal Mining ◽  
Coal Mine ◽  
Mining Area ◽  
Coal Production ◽  
Failure Characteristics ◽  
Deformation And Failure ◽  
Coal Mining Area ◽  
Mining Design ◽  
Principal Parts

For guiding coal mining under highway scientifically and systematically, Regulations of coal mining under highway is necessary to be compiled in a few years in China.Base on the study of laws about highway and coal mining and existent regulations about coal mining under other constructions, this paper proposed the principal parts of the regulations according to the deformation and failure characteristics of highway caused by the effect of coal mining.The study provided the supports about theories and mining technologies for extracting unexploited coal under highway, increasing the coal production, optimizing mining design, prolonging the coal mine life and put forward some constructive suggestions for completing the regulations in the coal mining area in China.

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