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MT 172-1987Expansion of rock stress determination method (English PDF)

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Issued by

State Administration of Work Safety

Level / Type

National · Mandatory

Issue date

November 18, 1987

Implementation date

December 10, 1987

Scope

MT 172-1987 (Expansion of rock stress determination method) is available as an English-translated PDF.

MT 172-1987 is the Chinese standard "Expansion of rock stress determination method". This standard applies to the determination of rock expansion stress.

Arising after rock physical and chemical reaction with water volume increases with time phenomenon, at this time the specimen to maintain a constant volume of the pressure that is needed for the expansion stress. Issued on 11/18/1987, in force from 12/10/1987.

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Document preview — MT 172-1987

National Standard of the People's Republic of China

Classification: D20

Document data
Standards quoted by this standard

1 Document data

Sector: Coal Industry Standard.

Date of issue: 11/18/1987.

Date of implementation: 12/10/1987.

Chinese Standard Classification: D20.

Length: about 3,381 characters in the Chinese original.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 8 pages — is available in the English PDF.

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