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Constrained by Beijing subway line 2 Chaoyangmen station, the Chaoyangmen-Dongdaqiao interval tunnel of Beijing metro line 6 is subdivided into the eastern burying mining part, the western burying mining part and the connecting tunnels part. This interval tunnel closes to the existing Chaoyangmen subway station and Chaoyangmen Bridge. The connecting tunnels with small clear space are shallow-buried...
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