Akkerman offers a variety of tunnel boring machines (TBM) that can be used with any jacking pipe up to 14 ft. in diameter, as well as with a multitude of drive lengths. They range in size from 44" to 168" outer diameters, and come standard with three heads (dirt cutter, carbide, and sand shelves) that can be changed underground. Another option is the guided boring machine (GBM), also known as pilot tube microtunneling, that provides extended, accurate drive lengths for various ground conditions. This product features the soil removal process of an auger boring machine and the same level of accuracy as traditional microtunneling combined in one system, for use in displaceable soil under 50 blow count.
