Underground coal mining has a strong disturbance on surrounding rock strata, causing
inevitable water inflow into mined spaces, which seriously affects safety production. Mine …

Broken coal and rock (BCR) are an important component medium of the caving zone in the
goaf (or gob), as well as the main filling material of fault fracture zone and collapse column …

We study the effect of strain localization on the strength and deformation of aeolian sand in a
true triaxial apparatus. Drained and undrained tests are conducted on sand specimens with …

Under the influence of multiple mining of coal seams, the granules structure formed by the
mixing of different grain sizes exists in the collapse zone, and its compaction and re …

Gangue backfilling mining technology plays an important role in relieving environmental
problems in mining area. The compression deformation and particle re-breaking properties …

Compressibility of granular materials depends on its initial density and is significantly
affected by particle breakage, especially at high stress levels. In this study, a simple …

Due to the compaction of the overburden strata, the crushed coal in caved zone will be re-
crushed. The compaction and re-crushing degree of crushed coal differ at different heights …

Filling of gangue formed in coal mining is an effective means to realize green mining in coal
mine. The key of gangue filling mining is to accurately understand the breaking mechanism …

The goaf is an important factor that induces major accidents. Based on the quantitative
analysis of the existing research results, summarize and sort out the research and …

Discrete element method (DEM)-based simulations are crucial for bridging macro and micro
research, particularly owing to the limitations of experimental methods. This paper reviews …