Sound core interval
Въвеждане Run length 1.00 m, core pieces 32 cm / 28 cm / 22 cm / 18 cm
Output RQD 100.0%, core recovery 100.0%, quality class Excellent
Interval-by-interval checks
Interval-by-interval checks
Supports decimal commas
Share URLs and local drafts
Калкулатор за RQD / възстановяване на ядката
Review interval-by-interval core length, recovered length, RQD, core recovery, and core loss in one place.
It supports both from/to interval entry and direct core piece lengths, with units and decimal places controlled from Settings.
Примери
Fractured interval
Въвеждане Run length 1.00 m, core pieces 18 cm / 14 cm / 9 cm / 8 cm / 7 cm / 6 cm / 5 cm / 4 cm
Output RQD 32.0%, core recovery 71.0%, quality class Poor, fracture zone flagged
Low-recovery long run
Въвеждане Run length 10 ft, core pieces 18 in / 12 in / 8 in
Output RQD 31.7%, core recovery 31.7%, loss flag shown
Често задавани въпроси
What is RQD?
RQD означава Rock Quality Designation. Това е сумата от дължините на парчетата ядка, по-дълги от прага, разделена на дължината на прохода.
Мога ли да въведа дълбочини от/до и дължина на прохода едновременно?
Yes. If both are entered, the tool warns you when the run length and the from/to difference do not line up closely enough.
Мога ли да смесвам единици в списъка с парчета ядка?
Yes. You can mix unit-tagged values. If a value has no unit, it is interpreted using the current piece unit.
Поддържа ли десетични запетаи?
Yes. Inputs such as 1,25 are accepted.
Може ли RQD да надвиши 100%?
Normally no. If it does, check for unit mistakes or duplicated input.
Речник
RQD
The sum of core piece lengths longer than the cutoff, divided by the run length.
Възстановяване на ядката
The total recovered core length divided by the run length.
Дължина на прохода
The total length of the drill interval.
Core piece length
The length of each recovered core fragment.
Cutoff length
The minimum piece length counted toward RQD.
Формули
map[Text:recovery = recovered_length / run_length × 100 text:recovery = recovered_length / run_length × 100]map[Text:rqd = sum(piece_length >= cutoff_length) / run_length × 100 text:rqd = sum(piece_length >= cutoff_length) / run_length × 100]map[Text:core_loss = max(run_length - recovered_length, 0) text:core_loss = max(run_length - recovered_length, 0)]map[Text:quality_class = RQD-based classification text:quality_class = RQD-based classification]map[Text:fracture_flag = RQD < threshold or quality class is Poor/Very poor text:fracture_flag = RQD < threshold or quality class is Poor/Very poor]map[Text:loss_flag = core recovery < threshold text:loss_flag = core recovery < threshold]
Бележки
- This tool is a screening aid, not a replacement for geologic interpretation or mine planning.
- If you enter both from/to depths and run length, always check unit consistency.
- Tune the cutoff length and thresholds to your site standards.
- If a result exceeds 100%, suspect a unit mistake or duplicated input.
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Dilution and Ore Loss Quick Calculator
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