The vertical shaft construction technology of cutter head transformation of large diameter shield

Taking vertical shaft construction of cutter transformation of the Beijing underground diameter shield for example,the design and construction of cutter structure transformation under complex boundary conditions for large diameter shield were discussed.Practice about how to ensure the structure safety of the shaft as well as well-coordinated shield construction was explored,and reliable solutions were provided successfully,which can provide reference for similar projects.

管子的识人“三德”

古往今来,识人用人,首先要考虑两个字,德和才。当然,我们往往希望一个人能够德才兼备,但是,事实上,一个人很难能够如此完美,于是,'德为先'还是'才为先'就成了识人用人的一个重要的前提和法则。几千年的历史发展,人们逐渐达成一个共识,才能是一把'双刃剑',才能掌握在有德行的人手里,这个人就可以将自己的聪明才智无私地奉献给社会,这是国家之幸,也是人民之幸。但是,如果才能掌握在没有德行的人手里,