Results 81 to 90 of about 12,296 (207)
This study established a bidirectional loading gas‐solid coupling blasting simulation system capable of multidimensional characterization in the laboratory, revealing the core mechanism by which in situ stress significantly inhibits the expansion of explosion cracks in deep soft coal floor blasting for enhanced permeability. The research indicates that
Jianyu Zhang +5 more
wiley +1 more source
Confirmation of natural gas explosion from methane quantification by headspace gas chromatography-mass spectrometry (HS-GC-MS) in postmortem samples: a case report [PDF]
A new analytical approach for measuring methane in tissues is presented. For the first time, the use of in situ-produced, stably labelled CDH3 provides a reliable and precise methane quantification.
Augsburger, M., Varlet, V.
core
Feitian Coal Mine Inclined Longwall Roof Cutting and Pressure Relief Gob‐Retaining Technology: Research Background, Core Innovations and Future Directions. ABSTRACT To address the issues of tight mining‐excavation scheduling and challenging gas management in coal mines, this study proposes a technical scheme for inclined longwall roof cutting and ...
Xianbi Xu +3 more
wiley +1 more source
Soft coal solid–gas coupling similar material for coal and gas outburst simulation tests
The adsorption, permeability properties, and damage evolution of internal cracks are often not considered in simulation tests for coal and gas outbursts. Therefore, in previous studies of similar materials, the materials used may not be similar in the properties mentioned above.
Sheng-quan He +3 more
openaire +1 more source
Construction of nonlinear deformation energy. ABSTRACT The deformation energy stored in soil‐like tectonic coal plays a critical role in coal and gas outbursts. Unlike hard rocks, tectonic coal exhibits pronounced stress–strain nonlinearity, invalidating traditional elastic energy models.
Chenghao Wang +4 more
wiley +1 more source
Study on Relationships between Coal Fractal Characteristics and Coal and Gas Outburst
AbstractThe influence factors for the coal and gas outburst can be divided into two categories. They are external factors and internal factors, respectively. The external factors include in-seam gas pressure, geological structure and so on, while the internal factors are mainly the coal characteristics themselves.
Zhang, S. +4 more
openaire +1 more source
Analysis of world experience of determining the basic criteria of outburst danger [PDF]
Проведено аналіз світового досвіду щодо раптових викидів та газових емісій в шахтах. Визначено найбільш важливі параметри, що характеризують схильність вугільного пласта до викидів. Встановлено фактори, що впливають на викиди в шахтах.
Бойко, В. В. +1 more
core
Experimental study on compound dynamic disaster in deep coal rock under gas and stress loading and unloading [PDF]
To explore the occurrence mechanism of compound dynamic disasters in coal rocks, this study conducted a true triaxial test simulating gas extraction and stress loading and unloading conditions. To differentiate behaviors among disaster types, the effects
Huang, Lei +5 more
core +1 more source
Conjecture about mechanism of butterfly-shape coal and gas outburst in excavation roadway
Referring to roadway butterfly shape rock burst mechanism and nonlinear dynamic system theory, a conjecture about butterfly-shape coal and gas outburst mechanism in excavation roadway has been made, In this conjecture, the mechanical essence of coal and ...
Ma Nianjie +5 more
doaj
The Influences of Structural Deformation on Coal and Gas Outburst Types
Geological structure is the main control factor of coal and gas outburst. Characteristics and types of coal and gas outburst usually have great different in regions of different structural deformation patterns.
Deyu Xu
doaj +1 more source

