Abstract High rock stress and ground temperature pose great threats to the routine production of longwall top coal caving (LTCC) panels. In this risky condition, width chain pillar is considered a factor adjustable for controlling burst goaf ignition hazards. However, contradiction, as suggested by experience, that narrowing helps prevention but negatively leads higher self-ignition potentials,...

To address the problem of surface subsidence caused by compression filling gangue in deep mines, a layered compaction test was designed based on zonation failure overburden goaf and property gangue. The deformation characteristics natural water-bearing states were obtained. during 0~100 kN loading stage an approximately positive S-type, which reflects relative “advancement” terms deformation. 1...

For the study of driving forces behind fault activation and its influencing factors on barrier effect rock mass movement under influence mining, discrete element numerical simulation software 3DEC was used for analysis impact distance to mining area from fault, buried depth upper boundary dip angle size thickness zone respectively. The results show that areas are closer as distances decrease, b...

A daunting mine disaster took place in 13 May 2014 at Soma and 301 men lost their lives. Brief information about the Eynez coal mine and some of the inherent characteristics of the field in terms of their effects on mining are presented. This paper basically concentrates on the factors that played an important role in the occurrence of this disaster. Progress of mine fire, firefighting, and res...