Construction method of expansion and reconstruction of shield tunnel door
A construction method and technology for shield tunneling, which are applied to earth-moving drilling, shaft equipment, shaft lining, etc., can solve problems such as the influence of station boundary size, complicated construction procedures, long operation time, etc. Construction risk and the effect of short construction period
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[0039] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught in the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0040] The diameter of the original hole circle is 6700mm, such as figure 1 As shown, the diameter of the hole ring after expansion should reach 7100mm.
[0041] The shield tunnel door expansion and reconstruction construction method of the present invention comprises the following steps:
[0042] (1) Stake out the center of the designed hole, draw the center O of the designed hole on the floor wall 1, and draw a new hole chi...
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