Mining Height Calculator

Reconcile independently surveyed actual MiningHeight against already established extraction marks with physical survey weights; no room/stope geometry design or permitted mining dimensions. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.

Description

An extraction height survey can be compared with independently marked target dimensions.

An extraction height survey can be compared with independently marked target dimensions.^[1]

Survey weights control how individual signed deviations contribute to the summary.

When to use Mining Height Calculator

Use this tool to calculate or review the supplied observations under the stated rules. Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.

How to use Mining Height Calculator and understand its results

Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.
Enter observedMiningHeightM, callerIndependentlyMarkedMiningHeightTargetM, observedMiningHeightSurveyWeights, using the field meanings and rules below, then run the tool.
Read signedExtractionDimensionDeviationsM, surveyWeightedSignedDeviationM. Inspect nested result fields where present, and review unknown records separately from known matches.
Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.

Input field	Meaning	Value type	Requirement
observedMiningHeightM	Observed mining height m	list of number	Required
callerIndependentlyMarkedMiningHeightTargetM	Caller independently marked mining height target m	list of number	Required
observedMiningHeightSurveyWeights	Observed mining height survey weights	list of number	Required

Use aligned nonnegative measured and target dimensions plus nonnegative weights with positive total weight. Compute measured−target for each row and sum differences weighted by weight/totalWeight. Zero-weight observations remain in the per-row output.

difference_i=measured_i−target_i; weightedDifference=Σweight_i difference_i/Σweight_i

Use the matching field units and the exact boundary, ordering and reference rules above.

Output field	Meaning	Value type
signedExtractionDimensionDeviationsM	Signed extraction dimension deviations m; preserve the subtraction order and sign defined in the mechanics	list of number
surveyWeightedSignedDeviationM	Survey weighted signed deviation m; preserve the subtraction order and sign defined in the mechanics	number

json

{
  "input": {
    "observedMiningHeightM": [
      2,
      4
    ],
    "callerIndependentlyMarkedMiningHeightTargetM": [
      3,
      3
    ],
    "observedMiningHeightSurveyWeights": [
      1,
      2
    ]
  },
  "output": {
    "signedExtractionDimensionDeviationsM": [
      -1,
      1
    ],
    "surveyWeightedSignedDeviationM": 0.3333333333333333
  }
}

Limitations and assumptions

Units, ledger boundaries, survey interpretation and model applicability must be independently established. These summaries do not assign reserve/resource classifications or establish support adequacy, ventilation safety or an operating setting.

Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries; ordinary string lists allow at most 128 strings of 128 UTF-16 units each; numeric matrices allow at most 128 rows and 128 columns, subject to narrower requirements above.

Alternative or Complementary methods

For a related step, use Bench Height Calculator: Bench height uses top and toe elevations sharing a survey datum. For a complementary comparison, use Mining Width Calculator: An extraction width survey can be compared with independently marked target dimensions.

References

Mining Height Calculator — tool.io

Similar or alternative tools

Bench Height Calculator
Bench height uses top and toe elevations sharing a survey datum.
Mining Width Calculator
An extraction width survey can be compared with independently marked target dimensions.