De l’or noir à l’or vert : le gaz de mine, une ressource de transition dans le Nord-Pas-de-Calais ? by Antoine Fontaine, Laurence Rocher

“…In the Nord-Pas-de-Calais coalfield, mine gas, an emblematic legacy of the coal mining past, is now seen as an energy resource and a vector for the renewal of the region. …”
Get full text

Control and Application of Terrain Curvature on Dynamic Disasters: A Case Study of Coal and Gas Outbursts in the Pingdingshan Mining Area, China by Dequan Sun, Ying Chen, Xiaoyan Li, Chunhui Huang, Huairui Su, Rujiao Chen

“…By using the N-shaped landform in the Pingdingshan coal mine as a case study, an area having strong tectonic activity and coal and gas outbursts was recorded to occur where terrain curvature changed, notably occurring where the positive curvature radius was 80.21% of the total. …”
Get full text

Stability Analysis of a Slope considering Two Reinforcement Processes by Wei Chen, Dongbai Li, Ting Ma, Helin Fu, Yanpeng Du

“…The strength reduction method embedded in a distinct element code was used to analyse the stability of a slope in a coal mining area that had been reinforced twice, primarily with pile and retaining wall, followed by porous steel-tube bored grouting. …”
Get full text

The Materialization Characteristics and Ratio of a New Soil Paste Filling Material by Zhi Wang, Weijian Yu, Fangfang Liu

“…The test results show that the optimal ratio of the new paste filling material in the coal mine is the quality ratio of coal zircon: red soil: cement as 6 : 2 : 1, and the slurry concentration is 80%, which can not only meet the transportation requirements required by the filling process but also reduce the cost of filling, and with the extension of the maintenance age, the filling material produces more gel products, and the overall structure is more encrypted.…”
Get full text

Dust Concentration Changing Regularities and Dust Reduction Technology by Spray Negative Pressure in Fully Mechanized Mining Face by Lirong Wu, Hongxuan Chen, Jiamin Li, Shican Fu, Yuyan Zhuang

“…Taking the 3top1110 fully mechanized caving coal face as an example, the dust distribution in the process of coal mining and hydraulic support shifting was studied. …”
Get full text

A Life Lived in Class by Diane Reay

“…I am going to focus on two fields: the working-class coal-mining community of my childhood and youth, and the educational system. …”
Get full text

SURVEYING RELATIONS WITHIN THE COMPANY AS AN ELEMENT OF THE COMPLANS CONTROL SYSTEM by Yuliya P. Berezina

“…The author analyzed the local regulations of coal mining enterprises. The paper studies the stages of mine surveying control procedures. …”
Get full text

Novel Energy-Efficient Miner Monitoring System with Duty-Cycled Wireless Sensor Networks by Peng Guo, Tao Jiang, Kui Zhang

“…In this paper, we propose a localization-MAC codesign approach for the monitoring system under the environment of coal mine. With the proposed approach, the system can achieve higher localization accuracy with low energy consumption and transmission delay, compared with existing range-free localization methods for sensor nodes.…”
Get full text

Laboratory-Scale Insight into Fractal Dimension Indicators for Seismic Hazard Assessment Associated with Rock Failures by Wu Cai

“…Investigation of acoustic emission (AE) characteristics during laboratory tests of coal samples can provide useful guidance on the recognition of microseismicity (MS) precursors for seismic hazards in underground coal mining. In this study, a methodology, involving fractal dimension indices and a fuzzy comprehensive evaluation model, was developed and demonstrated using AE monitoring data in a uniaxial loading test of coal samples, which allows for a better and quantitative recognition of AE/MS precursors to seismic hazards associated with rock failures. …”
Get full text

The Cause of Drop of the Water Level of Underground Quaternary Aquifer of a Mine under Mining Influence by Xianghong Liu

“…Water outburst on the coal mining face will result in the shutdown of the working face, tense mine connection, a sharp increase in mine drainage fee, and serious impact on normal production. …”
Get full text

Failure Mechanism and Stability Control of Surrounding Rock of Docking Roadway under Multiple Dynamic Pressures in Extrathick Coal Seam by Xiangye Wu, Shuai Wang, Chen Tian, Changxing Ji, Jingya Wang

“…Under the geological environment of No. 16 extrathick coal seam in the Laoshidan coal mine and taking the working face 031604 as the research background, the reasonable docking position selection of the withdrawal roadway and the docking roadway in the middle mining period and the surrounding rock stability control problems of the withdrawal roadway and the docking roadway during the final mining period were studied by using the methods of field theoretical analysis, numerical simulation, and field measurement. …”
Get full text

Mechanism of Fire Prevention with Liquid Carbon Dioxide and Application of Long-Distance Pressure-Holding Transportation Technology Based on Shallow Buried and Near-Horizontal Goaf... by Naifu Cao, Yuntao Liang

“…Taking the Huojitujing well of Daliuta Coal Mine in Shendong mining area as the industrial test site, an intelligent pressure-holding transportation of liquid CO2 in the 1000 m transportation pipeline was developed. …”
Get full text

Characteristics of Stratum Structure and Fracture Evolution in Stratified Mining of Shallow Buried High-Gas-Thick Coal Seam by Similarity Simulation by Qin Guangpeng, Cao Jing, Wang Chao, Wu Shuo, Zhai Minghua

“…The main coal seam thickness of Rujigou Coal Mine exceeds 20 m, due to the high gas content of the coal seam, it is prone to spontaneous combustion, and the stratified mining method is adopted. …”
Get full text

Parametric Study of the Borehole Drilling in Jointed Rock Mass by Yanan Gao, Yudong Zhang, Zetian Zhang, Minghui Li, Yingfeng Sun, Donghao Lan, Feng Gao

“…Therefore, the primary precaution for coal mining is gas control. At present, drilling and extraction are the main approaches for gas accident prevention. …”
Get full text

Study on Influence Laws of Strata Behaviors for Shallow Coal Seam Mining beneath Gully Terrain by Zhiqiang Wang, Jingkai Li, Chao Wu, Wenyu Lv, Jiao Zhang, Peng Wang, Zhen Li, Hengzhe Qu

“…Taking 3302 mining face of Zhujiamao Coal Mine as the engineering background, the laws of strata behaviors for shallow coal seam mining beneath gully terrain are studied by field detection, theoretical analysis, and numerical simulation. …”
Get full text

Application of Functional Link Artificial Neural Network for Prediction of Machinery Noise in Opencast Mines by Santosh Kumar Nanda, Debi Prasad Tripathy

“…The case study is based on data collected from an opencast coal mine of Orissa, India. From the present investigations, it could be concluded that the FLANN model give better noise prediction than the PPN and LeNN model.…”
Get full text

Photobooks dedicated to Gunkanjima: Random Personal Memories or Strategical Publications? by Cecile Laly

“…The publications were released mainly over the last two decades, around the time Japan began the UNESCO application proceedings for the Tentative List of “Sites of Japan’s Meiji Industrial Revolution: Iron and Steel, Shipbuilding and Coal Mining”, which includes a total of twenty-three sites, among which is Hashima. …”
Get full text

Theory and Application of Gob-Side Entry Retaining in Thick Three-Soft Coal Seam by Junchao Shen, Ying Zhang

“…In this paper, based on the geological conditions of a coal mine in China, we propose a novelty approach of GER in thick three-soft coal seam (it means a single seam with a soft roof and a soft floor). …”
Get full text

Fracture Characteristics of Polyurethane Grouting Materials Based on Acoustic Emission Monitoring by Baihui Ren, Jianjun Shen, Weitao Liu, Yingying Hu, Qing Cao

“…In this study, 16 groups of tests were designed by the orthogonal test method, and a PU grouting material was prepared, which can be used for the construction of sealing wall in mined-out area of coal mine. The basic properties of the material were measured. …”
Get full text

Analysis of the Coal Fluidization Mining Process with the Continuous-Discontinuous Coupled Particle-Block Method by Jing Li, Chun Feng, Xinguang Zhu, Yiming Zhang

“…In situ fluidization mining is a promising method which shows considerable potential for reducing the ecological influence impacts of coal mining. During fluidization mining, coal gangue will be separated from the ores, filled back, and returned to the excavation region, which, depending on the filling rate, greatly reduces the stratum deformation of strata, depending on the filling rate. …”
Get full text