摘要
采用实验室试验研究方法,利用LBY80/120岩石流变扰动效应式流变仪对石膏试块的稳定性进行研究。结果表明:试块的初始静载荷越大,损伤程度越严重,产生初始扰动损伤的时间越短。随着扰动强度增加,当静载荷小于试件单轴抗压强度的56%时,声波降低率小于7%,随着静载荷的增加,声波降低率增加明显,易达到破坏状态。
Based on laboratory methods,used LBY80/120 rheological rheometer to study the stability of pillar. The results showed that： the greater initial static load, the greater the degree of damage was,and shortened injury time of the initial disturbance. With the strength of disturbances increasing, when the static load of specimen less than 56% of uniaxial compressive strength and sonic rate of less than 7%,with the increase of the static load,the acoustic reduction rate increased significantly, and easy to destroy.
出处
《煤炭技术》
CAS
北大核心
2016年第6期32-34,共3页
Coal Technology
基金
重庆市煤矿安全生产科技项目(渝煤2015-kj-13)
重庆工程职业技术学院教改课题(JG141007)
关键词
采空区
静载荷
扰动损伤
声波降低率
goaf
static load
disturbance injury
acoustic reduction rate
