Si ShenFeb 28, 20232 minTBM face interventionOnce the TBM gets started, it usually stops from time to time for a procedure called ‘face intervention’
Si ShenJan 6, 20234 minTBM selection in rock conditionsFor tunnelling operations in self-standing ground, three arch-types of TBMs can be used: open, single shield and double shield
Si ShenAug 7, 20222 minAnnulus grouting behind tunnel segmentsAnnulus grouting (also called back grouting or tail-skin grouting) is the grouting around the tunnel annulus – the backfilling of the gap...
Si ShenMay 15, 20222 minTunnel segment geometry (1)main consideration factors around the segment thickness, radial length and longitudinal length