Cave Surveying

on expo

  1. Record cave
  2. Dimensions
  3. Rigging
  4. Question Marks
  5. Geology


Expo Handbook - surveying section

Basics

  • Stations, straight lines between
  • Station is a point
  • Not too long legs

Stations

  • Mark all stations
    • Nail varnish
    • Pencil
  • Number from 1
  • Number every 5 or junctions
  • Names unique within each survey
  • Note connections, don't renumber
  • Describe stations

Instruments

Instruments

  • DistoX

Instruments

  • DistoX2

Instruments

  • SAP2/SAP5 (Shetland attack pony)
  • Compass and Clino
  • Tape, Laser tape
  • GPS/phone

Things to note

Always put names, cave, date, scale

Check device is calibrated

Take digital readings twice/3-times

Notes

  • Draw to scale (1:250, 1:500)
  • Plan
  • Elevation
  • Cross-sections (perpendicular on pitches)
  • LRUD or pitch axes
  • Station description
  • Rag or waterproof paper
  • Book or phone/PDA

Therion Protractor

Surface

  • Survey to cave tag
  • Draw an area map
  • GPS, usually a leg or two away
  •   or surface survey from nearest cave
  • Use WGS84 - record altitude
  • Entrance photo, route description

Afterwards

  • Notes go in wallet - allocate number
  • Type in data (and LRUD/passages!)
  • Check it looks right, print out and draw up
  • Add to cave file, and connect
  • Write up QMs/description
  • Draw up passage (Therion or Tunnel)

Practical

  • Bull pot of the witches
  • Up to 3 teams
  • Try all insts
  • Try drawing
  • Come back and enter data