GB/T 23561.15-2010Methods for determining the physical and mechanical properties of coal and rock - Part 15: Method for determining the swelling stress of rock (English PDF)

1 Scope

This section GB/T 23561 specifies the terms and definitions expansion stress measuring rock involved, equipment, specimen size, measured

Steps and calculated data.

This section applies to the lateral confinement of the expansion rock stress measurement, in which the equilibrium pressure method is suitable for the expansion of surrounding rock stress state under lining

Measurement, pressure recovery method for the determination of the mine floor heave expansion stresses.

2 Normative references

The following documents contain provisions which, through reference GB/T 23561 in this section constitute provisions of this section. For dated reference documents

Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, we are encouraged to reach agreement under this section

All parties that proposed to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 23561.6-2009 physical and mechanical properties of coal and rock measuring method - Part 6. Methods for determination of moisture content of coal and rock

3 Terms and Definitions

The following terms and definitions apply to this part of the GB/T 23561 of.

4 Equipment

The main equipment are.

a) expansion stress analyzer, shown in Figure 1;

1 --- beam;

2 --- column;

3 --- joints;

4 --- pressure sensor;

5 --- upper platen;

6 --- permeable metal plate;

7 --- dried permeable plate;

8 --- filter paper;

. 9 --- specimen;

10 --- ferrules;

. 11 --- adjustment member;

12 --- container.

1 expansion stress meter schematic […]