●DM : Drilling Monitor
Do you know what to do when constructing a tall building such as skyscraper
or highrise condominiums?
First excavate the ground, pour concrete into the hole, and make a base foundation.
After this work, full-scale construction will begin.
When excavating a hole, the accurate measurement of the hole inclination, the hole depth and the hole surface by using ultrasonic is necessary. DM is used for the measurement.
One of the drilling processes is to inject water mixed with a slurry (Bentonite, Polymer, etc.) to prevent collapsing of wall surface.
This cannot be measured using radar, infrared, CCD camera, etc.
For the reason, ultrasonic is used for the measurement.