shaft capacity

[′shaft kə‚pas·əd·ē]

(mining engineering)

The output of ore or coal that can be expected to be raised regularly and in normal circumstances.

References in periodicals archive ?

It can also be seen that the grouting technique can improve shaft capacity as well as the end bearing capacity of piles (9851.5-4850.0 > 9071-4217.3).

By comparing the ultimate uplift static load test results, it can be determined that there is a 15.7% increment of ultimate pile capacity and shaft capacity after using base and shaft grouting technology.

Static and Dynamic Load Tests of Shaft and Base Grouted Concrete Piles

The allowable shaft capacity may be computed using the following equation:

GEOTECHNICAL STRUCTURES: INVESTIGATION OF DRILLED SHAFTS IN HIGHLY EXPANSIVE SOILS

Shaft Capacity of Open-Ended Piles in Sand, Journal of Geotechnical and Geoenvironmental Engineering 137(10): 903-913.

Experimental investigation of stresses in sand during the installation and loading of the short displacement pile/Itempiu, sukeltu smelio pagrinde ispaudziant ir apkraunant trumpa spraustini pamata, eksperimentinis tyrimas/Isu iedzenamo palu iedzilinasanas un noslogosanas radito spriegumu eksperimentala izpete smilsaina grunti/Liivas tekkivate pingete uuringud luhikese vaia paigaldamise ja koormamise ajal

To get around the problem of the shaft capacity constraint, MBT proposed dropping pre-mixed concrete down a steel pipe the full 2,300 m from the surface to the shaft station, so delivering a continuous supply of high-performance, steel fibre-reinforced shotcrete that could be sprayed at any time during the working shift.

Shotcreting with steel fibres assists Moab development

However, the designed shaft capacity of 3.36 Mt/y would allow for increased production if circumstances are found to be favourable.

Major gold projects

When maximum shaft skip capacity has been reached, the installation of pneumatic conveying systems substantially extends shaft capacity by 100 t/h/unit.