The typical types of drill rigs are highway, off-road, over-water, and portable drill rigs.
What drill rig is most common? The most common drill rig is highway. What drill rig would be best suited for soft, saturated soils? For soft, saturated soils the best suited drill rig would be portable. What are the common drilling methods? The common drilling methods are solid stem continuous flight auger, hollow stem continuous flight auger, mud rotary (rotary wash), and coring.
What method is best for drilling collapsing soil? Why?
The best method for drilling collapsing soils is hollow stem continuous flight auger, because the samples can be taken without removing the auger from the borehole.
What method would be best for shallow holes ( ...