岩爆的复合能量动力学机理

Compound Energy Dynamic Mechanism of Rock Burst

发生岩爆受多种复杂因素控制。如何从其现场实录出发,寻找其本质,是一个极其困难的工作。通过对各种岩爆能量机理分析,提出了基于复合能量为根本的岩体快速破裂后能量叠加引起工程围岩体动力破坏的岩爆发生机理。依据岩体裂纹快速起裂的能量判据,分析了裂纹开裂、扩展、贯通到煤岩运动的准静态到动态的过程。从岩体卸荷、流变的特性出发,阐述了基于复合能量条件下的止裂技术在应用于防治岩爆时的理论基础。

Rockburst occurs due to many complex factors. It is extremely difficult to find its essential peculiarity based on in - situ phenomena. The paper, based on the analysis of various rockburst energy mechanisms, proposes a rockburst mechanism based on compound energy, which indicates that the energy superposition after a rapid rupture of rock mass causes the dynamic fracture of engineering wall rock. The process from quasi static to dynamic coal rock motion involving crack initiation, extension and running - through is analyzed with the criteria of energy involved in the rapid crack initiation of rock mass. The theoretical basis for the application of the crack arresting technology based on compound energy conditions in rockburst control is described from the rock mass characters of unloading and rheology.