1) damage range of surrounding rock of excavation
洞室围岩的损伤范围
3) damage area
损伤范围
1.
Effect of the initial geo-stress unloading on the circular tunnel boundary is studied,and the damage area is calculated by use of combined method of theoretical analysis,numerical simulation by Dynamic FEM and verification with field monitoring vibration data.
计算结果表明在高地应力条件下进行爆破开挖时,初始应力动态卸荷在岩体中所产生的损伤范围比准静态卸荷所产生的损伤范围要大;侧压力系数λ和极角θ是影响初始应力动态卸载应力场的两个主要因素;在一定的卸载速率条件下,侧压力系数λ越大,动态卸载效应越显著,其所产生的损伤范围也相应较大。
2.
The damage area induced by dynamic unloading during blasting excavation is larger than that induced by static unloading during TBM excavation.
因此,初始应力动态卸荷(钻爆开挖)在岩体中所产生的损伤范围比准静态卸荷(TBM开挖)所产生的损伤范围要大;在中高地应力条件下,初始地应力瞬态卸荷所引起的围岩损伤是总体开挖EDZ的重要组成部分。
5) large range damage
大范围损伤
1.
By using of the theory of damage mechanics, closed-form solution about predicting crack initiation life of a beam subjected to reverse bending which leads to large range damage is derived.
用损伤力学推导了大范围损伤下的预估往复弯曲梁疲劳裂纹形成寿命的封闭解答,给出了确定损伤演化方程中材料常数的方法,说明了预估矩形截面梁疲劳裂纹形成寿命的方法。
2.
By using closed-form solution about predicting crack initiation and life under tension-compression and bending in large range damage,the method of determining material constants α and m in damage evo.
利用大范围损伤下的预估拉压和弯曲疲劳裂纹形成寿命的封闭解答,应用最小二乘法给出了确定损伤演化方程dD/dN=α(Δε)m中材料常数α、m的方法。
6) Small scale damage
小范围损伤
补充资料：洞室
1.仙人所居之处。亦指隐土居住之室。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条