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โ Mining Survey
0/6 steps
STEP 1
Underground Control
STEP 1 โ ESTABLISH UNDERGROUND CONTROL Set up control points in the mine. Why we do this: Underground surveys need their own control network. Surface control isn't visible underground. What you need: โข At least 2 control points per section โข Points in stable rock, not ore โข Permanent markers (pins, bolts) In METARDU: โ Create new project โ Set survey type: Mining โ Add control points as Primary
STEP 2
Instrument Setup
STEP 2 โ SET UP IN TUNNEL Position total station for inclined measurements. Key points: โข Centre over control point โข Measure instrument height (HI) โข Account for tunnel clearance โข Ensure clear sight lines For inclined traverses: โข Measure slope distance โข Measure vertical angle โข Measure horizontal angle
STEP 3
3D Traverse
STEP 3 โ RUN INCLINED TRAVERSE Measure between stations with full 3D data. In METARDU Mining Tools: โ Select 3D Traverse โ Enter slope distance โ Enter vertical angle (+ or -) โ Enter horizontal bearing โ Calculate 3D coordinates Formula: HD = SD ร cos(VA) VD = SD ร sin(VA) ฮE = HD ร sin(bearing) ฮN = HD ร cos(bearing) ฮZ = VD
STEP 4
Volume Calculation
STEP 4 โ CALCULATE VOLUMES Compute volumes from cross sections. In METARDU Mining Tools: โ Select Volume calculator โ Choose method: - End Area (simple) - Prismoidal (accurate) - Cut/Fill (for earthworks) Enter section areas at chainages.
STEP 5
Subsidence Monitoring
STEP 5 โ MONITOR SUBSIDENCE Track point movement over time. In METARDU Mining Tools: โ Select Subsidence Monitoring โ Enter epoch 1 coordinates โ Enter epoch 2 coordinates โ Calculate 3D movement Track: โข Vertical settlement (ฮZ) โข Horizontal movement (ฮE, ฮN) โข Total 3D displacement
STEP 6
Generate Report
STEP 6 โ MINING SURVEY REPORT Document your survey results. Include: โข Traverse calculations โข Volume computations โข Subsidence data โข Control point coordinates In METARDU: โ Export as PDF โ Include all calculations