Sentence examples for deformed coal from inspiring English sources
Because the size of BSU in brittle deformed coal increases more slowly than in ductile deformed coal, frictional heating and stress-chemistry of shearing areas might play a more important role, locally altering coal structure under stress, in brittle deformed coal.
In this study, the experimental analysis of the correlation between tectonically deformed coal types and fines generation characteristics was implemented.
The results indicated that tectonically deformed coal types significantly influenced the generating intensities, particle sizes and morphological features of fines.
No appreciable impact of the development of tectonically deformed coal on the compositions of fines was found.
Through well logging interpretation, the development intensity of tectonically deformed coal in three CBM wells was identified.
After analysis of the concentration and mean particle size of fines collected from these wells, it was concluded that the more developed the tectonically deformed coal, the higher the fines concentrations and the smaller the fines mean particle sizes, which was consistent with the experimental results.
Furthermore, mesopores account for larger percentage of the nano-scale pore volume in brittle deformed coals, while mesopores volume in ductile deformed coal diminishes rapidly along with an increase in the proportion of micropores and sub-micropores.
The macromolecular structure of tectonically deformed coals (TDC) may be determined by the deformation mechanisms of coal.
The tectonically deformed coals (TDC) is a kind of coal that ever underwent mono- or multi-phase tectonic stress fields, with which the primary texture and structure of TDC are deformed, broken or destroyed.
Based on the comprehensive evaluation of coal samples from Huaibei and Huainan coalfields in southern North China, the structure characteristics of tectonically deformed coals (TDC) and their influence on the physical properties of coals have been discussed.
Ductile deformed coals (such as mylonitic coals, which are locally generated in an intensively compressive and shearing environment) always display tightly compressed and broken fractures that are pushed into one another, leading to worse connectivity for methane migration.
