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弹性波反射法是利用人工激发的地震波、声波在不均匀地质体中所产生的反射特性来预报隧道开挖工作面前方地质情况的一种物探方法,其中,()的应用相对普遍和成熟。

发布日期:2022-07-18

弹性波反射法是利用人工激发的地震波、声波在不均匀地质体中所产生的反射特性来预报隧道开挖工作面前方地质...

试题解析

弹性波

应力波的一种,扰动或外力作用引起的应力和应变在弹性介质中传递的形式。弹性介质中质点间存在着相互作用的弹性力。当某处物质粒子离开平衡位置,即发生应变时,该粒子在弹性力的作用下发生振动,同时又引起周围粒子的应变和振动,这样形成的振动在弹性介质中的传播过程称为“弹性波”。

中文名
弹性波
途径
由压缩和膨胀而引起应力
意义
弹性介质中的传播过程
外文名
Elastic waves
特点
能传递纵波和横波,视传递介质而定

不均匀

光纤材料的折射率不均匀造成的损耗。在工艺里面,对于刻蚀工艺,均匀性是衡量刻蚀工艺在整个晶片上,或整个一批,或批与批之间刻蚀能力的参数。对于镀膜工艺,均匀性是用来衡量镀膜的膜厚是否一致的参数。NU%=(Emax—Emin)/Eave

中文名
不均匀
释义
光纤
属性
词语
词性
中性

反射法

反射法(reflection method)是1994年公布的石油名词,出自《石油名词》第一版。

中文名
反射法
所属学科
石油
外文名
reflection method
公布时间
1994年

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