Rock dynamics in deep mining

Rock mass dynamics disasters caused by excavations and mining occur frequently in deep mines. In order to establish a theoretical system and control technologies for such disasters, we first classify and define dynamic disasters, such as rock bursts, coal bursts, mine pressure bumps, and mine earthquakes. According to the occurrence mechanism of different types of dynamic disasters, we establish a compensation control theory based on excavation and mining effects. On the basis, we propose three key technologies: high prestress compensation technology for the roadway, pressure relief technology using directional roof cutting, and the goaf filling technology using broken rock dilation. These three technologies…

• NN
  National Natural Science Foundation of China

  Awards: 42277174, 42077267, 52204260, 41941018, 52074164
• FR
  Fundamental Research Funds for the Central Universities

  Award: 2022JCCXSB03