US 2025/0067177 A1Published application

Control apparatus and method for buoyancy adjustment of shield tunnel segments

AssigneesShenzhen Campus of Sun Yat-sen university, Sun Yat-Sen University, Southern Marine Science and Engineering Guangdong Laboratory(Zhu Hai)

InventorsLINCHONG HUANG, XUMIN HUANG, YU LIANG, CHENYANG ZHAO, CUNGANG LIN

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Abstract

The present invention discloses a control apparatus and method for buoyancy adjustment of shield tunnel segments, wherein the inner end wall of anchor rod accommodating cavity is provided with a first slurry channel extending forward to the outer peripheral wall of anchor rod, the countersunk bolt is provided with a second slurry channel passing through the front and rear end faces of the countersunk bolt, and a locking structure is disposed in the accommodating cavity to lock the countersunk bolt in the accommodating cavity and connect the first slurry channel and second slurry channel. The entire construction process which can be carried out during the construction or operation period greatly reduces construction costs and space.

Claims12

Dependent claims

A control apparatus for buoyancy adjustment of shield tunnel segments, comprising:

an anchor rod in which an axial accommodating cavity with a rear end opening is provided, a first slurry channel extending forward to the outer peripheral wall of anchor rod is provided at the inner end wall of accommodating cavity, and the anchor rod is squeezed into the formation as a whole through the tunnel segment;
a countersunk bolt that is inserted into the accommodating cavity, and the front end of countersunk bolt is provided with a second slurry channel extending to the rear end, and the second slurry channel is used to communicate with the first slurry channel;
a locking mechanism that is located in the accommodating cavity to lock countersunk bolt in the accommodating cavity;
and
a threaded connection structure that is screwed onto countersunk bolts and, directly or through intermediate components, pushes against tunnel segments.

2 more elements

Dependencies are inferred from the claim text.