Deep rock mechanics and surrounding rock control theory:
It is mainly engaged in research on mechanical properties of rock mass under deep complex conditions as well as the theory and key technology of rock engineering stability. The Laboratory aims at studying the mechanical properties of soft rock mass, fractured rock mass and rock mass affected by mining and excavation, the special evolution properties during fracture process and static and dynamic properties of bedding and joint rock mass. It also studies the deep fractured rock mass seepage and seepage catastrophic characteristics and stability of deep underground engineering.
Major research contents are listed as follows.
(1) The failure principle of deep mining rock mass and its different failure conditions and characteristics, the sensitivity of rock pressure relief fracture failure and its internal relationship with the physical appearance of rock failure;
(2) Impact of rock mass fracture history on rock mass fracture development and evolution under high constraint, high stress and excavation conditions; further fracture evolution and development of rock after failure; the interaction process between the supporting structure and the surrounding rock with continuous failure and changing properties as well as the corresponding control technology of surrounding rock stability;
(3) Dynamic characteristics of deep rock joints and jointed rock masses, including the establishment of rock nonlinear and discontinuous rock mass probabilistic model and blasting theory based on high stress conditions, dynamic response characteristics of rock joints and failure criteria, propagation and attenuation characteristics of stress wave in joints rock under deep stress conditions ; the utilization principle of energy accumulation and explosion energy and rock controlled blasting;
(4) Instability theory and stability protection method of deep fracture and joint rock mass, dynamic construction mechanics and structural stability analysis principle and method under combined static and dynamic loads.
