围岩-矿柱系统失稳冲击的能量-外力功理论  

ENERGY-WORK THEORY FOR SHOCK BURST OF COUNTRY ROCK-PILLAR SYSTEM

作　　者：潘岳 

机构地区：[1]青岛冶金矿山大学,讲师青岛266033

出　　处：《有色金属》1992年第4期18-25,共8页Nonferrous Metals

摘　　要：单位时间内系统释放的能量与外力功之和大于系统所能吸收的能量时,系统就会失稳。出于这一认识,本文采用变分原理对围岩-矿柱系统的稳定性问题作了分析,得到矿柱失稳冲击准则和矿柱亚稳态软化准则。由于考虑了外力功要素,本文准则可以较好地描述围岩-矿柱系统的一些行为,其中包括围岩刚度大于矿柱刚度时也会发生的冲击地压现象。文中的亚稳态软化准则可以为伺服控制试验机原理提供理论依据。Based on the recognition that shock burst will occur, if released energy by the country rock-pillar system plus work by external load within a unit time exceeds the energy absorbed by the system, the variational principle is adopted for the stability study of the system, and the pillar burst criterion and the pillar metastable softening criterion are found.On account of the action of external load,the criterions obtained in this paper may describe some behavior of the system, of which including the case tha...

关 键 词：围岩-矿柱系统 冲击地压 失稳冲击准则 亚稳态软化准则 

分 类 号：TD862[矿业工程—金属矿开采] TF80[矿业工程—矿山开采]