Contents Part I Vent System Optimization I Mobile Equipment Power Source--Impact on Ventilation Design 3 Chery Allen and Jozef Stachulak Pros and Cons of Primary Ventilation Systems and the Need for Critical Spares 17 Johannes Holzhausen Controlled Primary Ventilation Recirculation and Re-use with Reconditioning--A Strategy for Deep Mines 27 Leon van den Berg, Katie Manns, and Steven Bluhm Research on Ventilation Layout in Jet-Flow Gallery Ventilation System in a Twin-Tunnel Construction 42 Rong Liu, Liang Wang, Song Ren, and Zhen Zhang Influence of the Ratio of the Blowing and Sucking Flow on the Wall-Rotating Circulating Airflow in Fully Mechanized Excavation Face 49 Ronghua Liu, Yongjun Li, Pengfei Wang, Wei Shu, and Shangxu Gou Part I Vent System Optimization II Calculating Shock Losses in Mine Ventilation Networks 61 Mikhail Semin and Andrey Shalimov A Preliminary Experimental Investigation of the Airflow Resistance of an Evolving Cave in a Block/Panel Cave Mine 70 S Sreekumar Ajitha R.Bhargava, Y.Pan.A.Jha, P.Tukkaraja, K.Shahbazi, K.Katzenstein, and D.Loring An Investigation of the Elects of Particle Size, Porosity, and Cave Size on the Airflow Resistance of a Block/Panel Cave 82 Y.Pan, R.Bhargava, A.Jha, P.Tukkaraja, K.Shahbazi, K.Katzenstein, and D.Loring Selecting the Best Development Face Ventilation Scheme Using G1-Coefficient of Variation Method 92 Zhiyong Zhou, Mehmet Kizil, Zhongwei Chen, and Jianhong Chen Optimization of Ventilation System in Wongawilli Mining Face with a Continuous Miner 107 Tao Du Ventilation-on-Demand System in Pulang Copper Mine 116 Qifa Ge, Weigen Zhu, Weiguo Zhang, Qinggang Chen, and Zhuoming Yang Part Ill Mine Dusts and Control I Evaluation of Gravimetric Sampler Bias, Effect on Measured Concentration, and Proposal for the Use of Harmonised Performance Based Dust Sampler for Exposure Assessment 129 B.Belle Design of Auxiliary Ventilation System for Effective Dust Dispersion in Underground Coal Mine Development Heading-A Computational Simulation Approach 146 Devi Prasad Mishra, Aashish Sahu, and Durga Charan Panigrahi Coping with Diffuse Dust Emissions in Mining by Fibrous Filters with Trickling Water Cleaning 159 Federico Marangoni and Gemot Krammer Review of Real-Time Respirable Dust Survey Findings in Australian Coal Mines 172 Hsin Wei Wu and Stewart Gillies Explosive Testing of Rock Dust Dispersibility for Coal Dust Explosion Prevention 189 Jurgen F.Brune and Richard C.Gilmore CFD Modelling of Ventilation, Dust and Gas Flow Dispersion Patterns on a Longwall Face 198 Ting Ren and Zhongwei Wang Part Iv Minne Dusts and Control II Study of the Effect of Drilling Bite Depth and Bit Wear Condition on Drilling Specific Energy and Dust Generation During Bolt-Hole Drilling 211 Yi Luo, Hua Jiang, and Mingming Li Applications of Water Infusion for Dust Control in Underground Coal Mines-A Critical Review 219 Ting Ren, Jian Zhang, and Jianping Wei The Current State of Chinese Coal Mining Dust Hazard and Prevention 231 Xiaowei Zhai, Qinyuan Hou, Jinzi Han, and Jiaojiao Wang Numerical Study on Mine Dust Capture Using Nano-Droplet Flow from Wet Steam Condensation 241 Anwen Zhao, Song Guo, Shuxin Chen, Shang Gao, Xuebin Chen, and Chenchen Li Numerical Simulation of the Dust Movement Rule at a Fully Mechanized Mining Face in Liangshuijing Coal Mine 254 Jianguo Wang, Feiwen Qi, Yaru Zhe, and Yaping Zhang Part V Methane and Methane Control I New Method for Ventilation Methane Content Monitoring 269 Janusz Kruczkowski and Piotr Ostrogorski Model Experiment and Numerical Simulation for the Heading Face Methane Behavior 280 Masahiro Inoue.Bingrui Li and Takumi Hvoudou Methods of Methane Control in Polish Coal Mines 292 Nikodem Szlazak, Dariusz Obracaj, and Justyna Swolkien The Development of Coal Mine Drainage Monitoring System Based on DSP and PC 308 Xiaojuan Shi, Dalong Nie, and Gaoyang Wang Study on Online Detection Method of Methane Gas in Coal Mine Based on TDLAS Technology 318 Jun Deng, Weile Chen, Weifeng Wang Yuan He and Baolong Zhang Part VI Methane and Methane Control II Experimental and Simulation Investigation of Nz Enhanced Gas Drainage in Low Permeable Coal Seam 335 Jia Lin.Ting Run.Patrck Booth and Jan Nemeik Safe Extraction of Methane and Power Generation in a Gold Mine in South Africa 347 J.J.L du Plessis and M.van der Bank Leveraging Coal Mine Methane/Ventilation Air Methane for Improving Ventilation Standards in Indian Underground Coal Mines and to Reduce Its Carbon Footprints 355 Satish K.Sinha and D.C.Panigrahi Influence of Pressure Changes on Gas Distribution in Longwall Gobs 364 Stanislaw Wasilewski Using Stress Relief Ratio to Delineate Optimal Methane Drainage Zone in Longwall Goaf 374 Qingdong Qu, Hua Guo, and Andy Wilkins Theoretical Model for Micro-fl
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