Page 43 - Trenchless Technology Piping Installation and Inspection
P. 43

Concrete backstop  Hydraulic rams




                                             Operators platform  Heavy-duty track  Concrete floor










                   Sheeted pit                     Spoil ejector


                                                       Master pusher












                          Water level               Auger  flights

                                      Bentonite line    Casing pipe  Grade control (steering) head Track-type horizontal auger-boring operation. (Iseley et al., 1999.)





                                          Water line





                                               Cutting head


                                                               FIGURE 1.13






                                                                     17
   38   39   40   41   42   43   44   45   46   47   48