2. It should accord to the regulate of law, the requirement of occupation or duty, the legal action, the action of
antecedence and so on.
不作为犯罪中的义务来源于法律明文规定的、职业或职务道德上要求产生的、基于法律行为产生的、先行行为引起的等法律义务。
3. It has an important effect on the
antecedence tunnel and results in displacement and stress increase when the later tunnel is excavated.
后行隧道开挖对先行隧道围岩的受力变形有很大影响，后行隧道开挖导致先行隧道洞周位移和应力大幅度增大；
