Lab Services: Rock testing

Lab Services: Rock testing

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Test Method Title

Drillability Test Suite

Reference Number

NTNUs 13A-98 Drillability Test Methods & SINTEFs Standards

Material

Rock

Test Property

Drilling Rate Index, Bit Wear Index, Cutter Life Index, Flakiness, Brittleness Value, Siever's J-Value, Abraision Value, Abraision Value Cutter Steel

Description of Test

The Drillibility tests produce reliable predictions of TBM performance. The test method determines Drilling Rate Index, Bit Wear Index, Cutter Life Index. The indices are indirect measures for the drillability of rock in tunneling and rock excavations.

Preferred Test Sample Size

Rock core specimens

Number of Test Specimens

1

Test Specimen Size

15 - 20 kg preferred; minimum smple size 10kg of rock core

Keywords

Drillability, NTNU, Drilling Rate Index, Bit Wear Index, Cutter Life Index

The trademarked acronyms and terms DRI™, BWI™, CLI™, SAT™, Drilling Rate Index™, Bit Wear Index™, Cutter Life Index™ and Soil Abrasion Test™ are unique for test results and calculated indices originating from NTNU/SINTEF and can only be obtained by testing samples at their reference laboratory in Trondheim, Norway.

For more information, contact GeoTesting Express:



Atlanta

770.645.6575


Boston

978.635.0424


Chicago

224.676.1371


New York

212.566.6630



info@geotesting.com