摘要
由于端头效应及岩体逐渐破坏等原因 ,地下工程围岩的各种变形包括弹塑性变形在内 ,都不是在开挖瞬间完成的 ,而具有显著的时间性 ;支护的作用主要是控制后期松动区的发展 ;通过限制初始松动区岩体变形、防止和减缓其残余强度降低 ,支护不仅能控制已破坏岩体的非连续变形 。
According to the end restrain in heading face and the time dependent breaking of rock masses, the deformation of rock masses in underground engineering, including elastic deformation and plastic deformation, has marked time dependent behavior. By restricting the deformation in the initial loosing zone and retarding the broken rock strength, supports can not only control the discontinuous deformation of the destroyed rock masses, also control the elastic and plastic deformation and strain of surrounding rock masses in underground engineering.
出处
《矿山压力与顶板管理》
北大核心
2001年第4期6-7,共2页
Ground Pressure and Strata Control
