u/Historical_Phone_973

How would you scan a 200 m deep minshaft, where you have only the cage that goes down, you can stand on its top, no side tunnel, and after 110 meters water is falling in from the side, so practically it does rain below that point. The survey has a geodetic purpose, so it has to be accurate. Scanning is a must, but most of the commercial scanners are ToF, so water is an issue, plus the shaft is homogeneous, so the adjustment will be frustrating.

Which scanner would you use?

How would you estsblish control points?

Or in general, how would you approach this task?

If you would need to specify one tool that would help you save a lot of time during civil engineering workflows (anything from road to railway), what it would be? Or with other words, what is your biggest pain when it comes to point clouds of any type?

I'm collecting inspiration for dev.

How do you perform a flow analysis from point clouds? Generate a Tin? A DTM? Extract vectors and build a surface from it? What key factors you take into account? And what is the most useful output?

As a surveyour, who has little to none experience in the topic, I'm curious, how hydrology engineers utilise the point clouds and how does the outcome looks?