DZ/T 0276.19-2015Regulation for testing the physical and mechanical properties of rock. Part 19: Test for determing the deformability of rock in uniaxial compression (English PDF)

Foreword

DZ/T 0276 "Testing Procedures for Physical and Mechanical Properties of Rocks" is divided into 31 parts.

--- Part 1. General and general provisions;

--- Part 2. Rock moisture test;

--- Part 3. Rock particle density test;

--- Part 4. Rock density test;

---Part 5. Rock water absorption test;

---Part 6. Rock hardness test;

--- Part 7. Rock gloss test;

--- Part 8. Rock antifreeze test;

---Part 9. Rock resistance to disintegration test;

--- Part 10. Rock expansion test;

--- Part 11. Rock erosion test;

--- Part 12. Rock acid and alkali resistance test;

--- Part 13. Rock specific heat test;

--- Part 14. Rock thermal conductivity test;

---Part 15. Rock breakdown voltage and breakdown strength test;

---Part 16. Rock volume resistivity and surface resistivity test;

--- Part 17. Rock radioactivity specific activity test;

---Part 18. Rock uniaxial compressive strength test;

---Part 19. Rock uniaxial compression deformation test;

--- Part 20. Rock triaxial compression strength test;

--- Part 21. Rock tensile strength test;

--- Part 22. Rock flexural strength test;

--- Part 23. Rock point load strength test;

--- Part 24. Rock acoustic wave velocity test;

---Part 25. Rock shear strength test;

--- Part 26. Rock mass deformation test (bearing plate method);

--- Part 27. Rock mass deformation test (drilling deformation method);

---Part 28. Rock mass strength test (direct shear test);

--- Part 29. Rock mass strength test (bearing plate method);

--- Part 30. Rock mass bolt load test;

--- Part 31. Rock sound wave velocity test.

This part is the 19th part of DZ/T 0276.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces DY-94 "Testing procedures for physical and mechanical properties of rocks. 18. Uniaxial compression deformation test". This part is related to DY-94 the main technical changes are as follows.

--- Added three chapters of "normative reference documents", "terms and definitions" and "principles";

--- Increased the dial gauge in the equipment;

--- Removed the linear differential converter method and the platen displacement method;

--- Removed equipment related to linear differential converter method and platen displacement method;

--- Modified the test method;

---Modified equipment,

--- Revised the size requirements for the production of standard samples;

---Modified the loading device in the instrument and changed the press to the material testing machine;

--- Modified the rock elastic modulus test record table.

This part is proposed by the Ministry of Land and Resources of the People's Republic of China.

This part is under the jurisdiction of the National Land Resources Standardization Technical Committee (SAC/TC93).

This section drafted by. Hubei Institute of Geological Experiments.

Drafters of this section. Mei Yuxiang, Zhao Guifang, Zeng Jun, Cheng Liwen.

The previous versions of the standards replaced by this section are.

---DY-86;

---DY-94.

Rock physics and mechanics properties test procedures Part 19. Rock uniaxial compression deformation test

1 Scope

This part of DZ/T 0276 specifies the resistance strain gauge method and the dial gauge method for determining the uniaxial compression deformation parameters of rock.

This section applies to rock uniaxial compression deformation test in rock physical and mechanical properties test.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

DZ/T 0276.5 Test procedures for physical and mechanical properties of rocks - Part 5. Rock water absorption test DZ/T 0276.18 Test procedures for physical and mechanical properties of rock - Part 18. Rock uniaxial compressive strength test

3 Terms and definitions

The following terms and definitions apply to this document.

Elastic modulus the ratio of longitudinal stress to longitudinal strain of rock specimen under uniaxial compression without lateral conditions.

Deformation modulus Under the condition of no lateral direction, the rock stress-longitudinal strain curve obtained by rock specimen under uniaxial compression corresponds to 50% compressive strength.

The slope of the point where the point is connected to the origin, that is, the secant modulus.

Poisson'sratio

The ratio of transverse strain to longitudinal strain of a rock specimen under uniaxial compression without lateral conditions.

4 Principle

By determining the longitudinal and transverse strain values of rock specimens under uniaxial compression conditions, the rock elastic modulus, deformation modulus and mooring are calculated accordingly.

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5 Instruments

5.1 Material testing machine. The indication error does not exceed ±1%.

5.2 Resistance strain gauge.

5.3 Whistler Bridge, Megohmmeter.

5.4 Dial gauge. The measurement error is not more than 0.1% FS, and the resolution is better than or equal to 0.001mm.