Qiang Sun

TL;DR: Wang et al. as mentioned in this paper proposed a probability integration model for surface subsidence prediction based on the equivalent mining height (EMH) theory and described the basic control principle for surface sub-surface subsidence, i.e., guaranteeing a maximum security standard for surface buildings.

TL;DR: It is concluded that the high filling stress, low gangue original GSG, and low filling stress rate in GBM can effectively reduce the risk of overburden aquifer destruction.

TL;DR: In this article, the evolution of the physical and mechanical properties of granite specimens from room temperature to 800°C was studied and the results indicated five phases in the variation of physical/mechanical properties with temperature: the first phase corresponds to the vaporization-escaping interval of adhered water, bound water, and structural water.

TL;DR: In this article, the variations of thermal conductivity, thermal diffusivity and heat capacity of sandstone after high-temperature heating were reported, which is closely related to the loss of water and damage of structure caused by thermal reactions.

TL;DR: In this paper, an integrated closed-cycle mining-dressing-gas draining-backfilling-mining (MDGBM) technique was proposed to address the following major engineering issues faced by the Pingdingshan No. 12 mine: (1) difficulty in implementing auxiliary lifting because of its depth (i.e., beyond 1000m); (2) highly gassy main coal seam with low permeability; (3) unstable overlying coal seam without suitable conditions for implementing conventional mining techniques for protective coal seam; and (4) predominant reliance on “under three�