分区破裂化现象的研究进展

通过对分区破裂化现象的发现过程进行回顾、对分区破裂化现象的研究现状进行综述,对深部巷道围岩的受力变形的特点有了更好的认识,并利用弹塑性理论、断裂力学理论、非线性科学理论等对分区破裂化现象形成的机理进行了探索,得到了一些有益的结论.在现场观测到了分区破裂化现象,从试验上再现了分区破裂化现象的一些主要特点,在数值模拟方面能...

Advance in investigation of zonal disintegration phenomenon

The finding process of the zonal disintegration phenomenon was reviewed, and the state of the art of investigations of zonal disintegration phenomenon overviewed. The review shows that our understanding on the stressing and the deformation of the rock mass near the deep level openings has been greatly improved. This phenomenon was investigated with the help of the elasticity and plasticity theories, fracture mechanics and nonlinear science etc., and many helpful conclusions reached. In situ observations the existence of zonal disintegration phenomenon was observed, laboratory model experiments reproduced the main features of zonal disintegration phenomenon,and numerical modeling qualitatively reproduced zonal disintegration phenomenon. But many problems still exist, including the influence of the mechanical and the structural properties of the rock mass on the temporal evolution process of the zonal disintegration, the relationship between the zonal disintegration and the phenomenon of the sign change of deformation increment after the beginning of the damaging process in rock, the relationship between the zonal disintegration and the rock bursts etc.