| abstract |
The utility model relates to a 'shield first and well last' mine method subway interval air shaft, which comprises a mine method air duct and an open cut air shaft; the mine method air duct is arranged transversely perpendicular to the shield tunnel, and is longitudinally connected with shield segments in front and at back; the open cut air shaft is positioned on one side of the shield tunnel, one transverse end of the mine method air channel is closed, the other transverse end of the mine method air channel is connected into the open cut air shaft, and the top of the outer side of the open cut air shaft is provided with the air shaft which is communicated with the ground line. The utility model discloses open cut the air shaft for "in the open ground of positive line one side with the design of subway tunnel air shaft + with the two-layer wind channel of the mine method of positive line quadrature", open cut air shaft and positive line shield tunnel are accomplished in the elder generation construction, backfill in the shield tunnel and consolidate the back and simulate the normal tunnelling country rock in mine method wind channel and pass through the shield tunnel scope, solve the problem that the pipeline that subway tunnel air shaft open cut in the positive line scope brought changes, traffic is dredged the scheduling problem and shield tunnel time limit for a project. |