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521
Failure Mechanism and Stability Control of Surrounding Rock of Docking Roadway under Multiple Dynamic Pressures in Extrathick Coal Seam
Published 2020-01-01“…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. …”
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522
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...
Published 2021-01-01“…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. …”
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523
Characteristics of Stratum Structure and Fracture Evolution in Stratified Mining of Shallow Buried High-Gas-Thick Coal Seam by Similarity Simulation
Published 2021-01-01“…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. …”
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524
Study on Influence Laws of Strata Behaviors for Shallow Coal Seam Mining beneath Gully Terrain
Published 2021-01-01“…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. …”
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525
Application of Functional Link Artificial Neural Network for Prediction of Machinery Noise in Opencast Mines
Published 2011-01-01“…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.…”
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526
Theory and Application of Gob-Side Entry Retaining in Thick Three-Soft Coal Seam
Published 2021-01-01“…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). …”
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527
Fracture Characteristics of Polyurethane Grouting Materials Based on Acoustic Emission Monitoring
Published 2021-01-01“…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. …”
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528
Stochastic Generation of Subsurface Profiles for Realistic Simulation of Through-the-Earth Communication Systems
Published 2019-01-01“…This model can be used to estimate link budget for TTE communication in coal mines.…”
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529
Geological Structure Exploration of Karst Collapse Column and Evaluation of Water Insulation Properties of the Mud Part
Published 2021-01-01“…In this study, the X5 KCC in Shiquan Coal Mine was investigated by means of controlled source audio magnetotelluric exploration and borehole television. …”
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530
Supporting Technology Research in Deep Well Based on Modified Terzaghi Formula
Published 2018-01-01“…In order to solve the difficult problem of supporting roadway with large cross section and broken surrounding rock, the large-section inclined shaft of Pingdingshan Coal Mine is taken as the research instance. In this paper, a modified formula for the Terzaghi ultimate bearing capacity of a foundation is established based on rock mass strength criteria. …”
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531
Control of Water Inrush from Longwall Floor Aquifers Using a Division Paste Backfilling Method
Published 2021-01-01“…Aiming at the problem of the safety mining problems of longwall paste filling working face under buildings on high confined water in the Daizhuang Coal Mine, the paste filling mining method was used. …”
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532
A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams
Published 2015-01-01“…The field application showed that the early warning method had avoided miners suffering from all support crushing accidents in Shigetai coal mine.…”
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533
Application of Distributed Optical Fiber Technology for Coal Bump Prevention
Published 2021-01-01“…The 8939 working face in Xinzhouyao coal mine is a high coal bump proneness panel. For coal bump prevention, rib holes are drilled for pressure relief purpose. …”
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534
Research on Mechanisms and Control Measures of Surrounding Rock Disaster in Large Section Roadway with Top Coal under the Influence of Tectonic Stress
Published 2021-01-01“…Based on the research background of large section roadway with top coal (LSRTC) in thick coal seam mining in Wangzhuang Coal Mine, Shanxi Province, China, catastrophe characteristics of the surrounding rock of the LSRTC were investigated and summarized. …”
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535
Study on Deformation and Failure Characteristics of Surrounding Rock of Overlying Roadway under Upward Mining in the Deep Mine
Published 2021-01-01“…To study the impact of mining of the lower protective layer on the deformation and failure characteristics of the upper roadway, these characteristics of an 879 gas drainage roadway were studied and analyzed during the mining of the II 1051 working face of the Zhuxianzhuang coal mine using similar simulation experiments and numerical simulation methods. …”
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536
Investigations of Coal-Rock Parting-Coal Structure (CRCS) Slip and Instability by Excavation
Published 2021-01-01“…Slip and instability of coal-rock parting-coal structure (CRCS) subjected to excavation disturbance can easily induce coal-rock dynamic phenomena in deep coal mines. In this paper, the failure characteristics and influencing factors of CRCS slip and instability were investigated by theoretical analysis, numerical simulations, and field observations. …”
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537
Integrated Navigation Fusion Strategy of INS/UWB for Indoor Carrier Attitude Angle and Position Synchronous Tracking
Published 2014-01-01“…Finally, an indoor experiment platform is established to verify the integrated navigation theory of INS/UWB, which is geared to the needs of coal mine working environment. Static and dynamic positioning results show that the INS/UWB integrated navigation system is stable and real-time, positioning precision meets the requirements of working condition and is better than any independent subsystem.…”
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538
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539
Molecular Dynamics Simulation of CO<sub>2</sub>-ECBM Under Different Moisture Contents
Published 2025-01-01Get full text
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540
Failure Mechanism and Control Technology of Thick and Soft Coal Fully Mechanized Caving Roadway under Double Gobs in Close Coal Seams
Published 2020-01-01“…In view of the above problems, taking the close coal seam mining in the Zhengwen Coal Mine as the engineering background, a theoretical calculation is used to obtain the loading of the step coal pillars and the slip line field distribution of the floor depth. …”
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