Mining Length Calculator
Reconcile independently surveyed actual MiningLength 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 length survey can be compared with independently marked target dimensions.
An extraction length 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 Length 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 Length Calculator and understand its results
- Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.
- Enter observedMiningLengthM, callerIndependentlyMarkedMiningLengthTargetM, observedMiningLengthSurveyWeights, 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 |
|---|---|---|---|
| observedMiningLengthM | Observed mining length m | list of number | Required |
| callerIndependentlyMarkedMiningLengthTargetM | Caller independently marked mining length target m | list of number | Required |
| observedMiningLengthSurveyWeights | Observed mining length 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 |
{
"input": {
"observedMiningLengthM": [
2,
4
],
"callerIndependentlyMarkedMiningLengthTargetM": [
3,
3
],
"observedMiningLengthSurveyWeights": [
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 Mining Width Calculator: An extraction width survey can be compared with independently marked target dimensions. For a complementary comparison, use Mining Height Calculator: An extraction height survey can be compared with independently marked target dimensions.
References
-
Mining Length Calculator — tool.io
Similar or alternative tools
- Mining Width Calculator
An extraction width survey can be compared with independently marked target dimensions.
- Mining Height Calculator
An extraction height survey can be compared with independently marked target dimensions.