Double drilling should therefore be regarded as one possibility amongst others to reduce concentrated flow erosion rates in farmers' fields.
For positions in the landscape with a contributing drainage area larger than ca. 0.75 ha, the effectiveness of double drilling can be doubted.
Results indicate that double drilling can reduce soil loss through concentrated flow by 25% on average and by up to 40% under optimal conditions.
This study investigates a new technique for controlling concentrated flow erosion rates in the loess belt of central Belgium: i.e. double drilling of cereals in zones of concentrated flow.
The objective of this study was to improve the machining performance during drilling of sandwiched composite using various dimensions of double cone drill.
Double shoulder drill pipe joint (DSJ) is a novel thread structure which appears in recent years.
Unscrew the cabin top and after carefully measuring (double checking) drill holes in the four corners of the piece of decking that will be removed.
From the experimental study, it was found that the double cone drills induce less thrust force compared to the standard twist drill.
Results have shown that double cone drills generated less thrust force compared to standard twist drills.
