Results 51 to 60 of about 2,737 (198)

Proposal of revision for transducers setup of Coal Mine Safety Regulatio

Gong-kuang zidonghua, 2014
The paper proposed that wind transducers, air velocity transducers and methane transducers in intake airway should be setup for alarm of coal (rock) and gas outburst additionally, full scale methane transducers or high-low concentration methane ...
SUN Jiping
doaj   +1 more source

Study on Gas Product of Gas Explosion Under Different Ignition Modes

Meikuang Anquan, 2020
A self-developed gas explosion system induced goaf spontaneous combustion was used to study the variation of methane products ignited by electric spark and high temperature source.
WANG Haiyan, ZHANG Lei, LYU Jiaxi
doaj   +1 more source

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

Nanocubes and Cuboctahedra: Entropic Stabilization Versus Thermal Segregation in Rock Salt‐ and Spinel‐Type Multinary Oxides from Spray‐Flame Synthesis

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Spray‐flame synthesis enables highly flexible and scalable production of multinary and high‐entropy oxide nanoparticles due to high synthesis temperatures with subsequent quenching. Temperature‐dependent in situ diffraction of as‐synthesized materials clearly reveals entropy stabilization in rock salt lattices, while spinels—featuring tetrahedral and ...
Mohammed‐Ali Sheikh, Steven Angel, Sabrina Schleich, Leon Müller, Jan Ternieden, Hatem M. A. Amin, Christof Schulz, Hartmut Wiggers   +7 more
wiley   +1 more source

Investigating the Influence of Flue Gas Induced by Coal Spontaneous Combustion on Methane Explosion Risk

Fire
During the process of coal spontaneous combustion (CSC), a plethora of combustible gases alongside inert gases, such as CO2, are copiously generated. However, prior investigations have regrettably overlooked the pivotal influence of inert gas production ...
Sijia Hu, Yanjun Li, Chuanjie Zhu, Baiquan Lin, Qingzhao Li, Baolin Li, Zichao Huang   +6 more
doaj   +1 more source

Mechanisms of Roadway Instability and Coupled Control Technology for Working Face Passing Through Fault Zones

Energy Science &Engineering, EarlyView.
This study mainly explores the instability characteristics of roadways near faults in the working face. Taking the 51104 transportation roadway of the 51104 working face in Shengxin Coal Mine as the main research object, through theoretical analysis, borehole inspection, numerical simulation and on‐site mine pressure observation, the instability ...
Shuaifeng Yin, Yitao Yan, En Wang, Xubo Zhao, Kanglei Han   +4 more
wiley   +1 more source

Experimental investigation of methane explosion fracturing in bedding shales: Load characteristics and three-dimensional fracture propagation

International Journal of Mining Science and Technology
Methane in-situ explosion fracturing (MISEF) enhances permeability in shale reservoirs by detonating desorbed methane to generate detonation waves in perforations. Fracture propagation in bedding shale under varying explosion loads remains unclear.
Yu Wang, Cheng Zhai, Ting Liu, Jizhao Xu, Wei Tang, Yangfeng Zheng, Xinyu Zhu, Ning Luo   +7 more
doaj   +1 more source

Research on Crack Propagation and Stress Propagation in Coal‐Rock Combinations Under Different In Situ Stresses Subjected to Blasting Loads

Energy Science &Engineering, EarlyView.
A stress wave propagation model for coal‐rock combinations under in situ stress was established. Taking a coal mine in Huainan, China as the engineering background, isotropic and anisotropic numerical models were constructed. Field engineering practices were carried out to verify the reliability of the conclusions.
Jianyu Zhang, Guangming Chen, Meiyao Li, Xinyu Wang, Yuting Liu, Renjie Cui, Yixin Gong   +6 more
wiley   +1 more source

Safe Separation of the Low-Concentration and Oxygen-Bearing Coal Mine Methane by Vacuum Pressure Swing Adsorption

Adsorption Science & Technology, 2014
Pressure swing adsorption (PSA) is a suitable method to enrich the concentration of methane in coal mine methane (CMM) separation processes. However, traditional PSA processes for low-concentration CMM can easily increase the concentration of methane to ...
Xiong Yang, Yingshu Liu, Yongling Li, Yu Meng, Chuanzhao Zhang, Junjie Yan   +5 more
doaj   +1 more source

Effect of meshy obstacle on methane gas explosion

Procedia Engineering, 2011
AbstractIn this paper the effect of meshy obstacle on methane gas explosion is experimented by high speed schlieren technique, the images of explosion flame crossing obstacle is gained and flame propagation velocity and temperature is measured. The experimental results showed that meshy obstacle disturbed unburned gas and enhanced the camber of flame ...
Yi, Yang, Xueqiu, He, Geng, Luo, Huia, Wang   +3 more
openaire   +1 more source