GB/T 30050-2013Classification of coal-body structure (English PDF)

1 Scope

This standard specifies the structure of coal classification based classification scheme.

This standard applies to coal without air oxidation or damage caused by human factors of coal body.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

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

GB/T 12937 terms of coal

GB/T 18023 macro bituminous coal rock type classification

3 Terms and Definitions

5 classification scheme

Coal structure types into native structure, fragmented structure, crumb structure, mylonite structure (see Table 1).

Table 1 Classification of coal structure

Type Code

Factors classification

Lithotypes type

Distinguished degree

Bedding Coal and integrity

Cracks and crumpled

Degree of development

Hand strength test

Native structure MJ-I

Lithotypes type

Clear boundaries, macro

Coal rock composition can be identified

Native structural integrity,

Continuous bedding

Coal complete

Fractured not stagger layer

Reason, no crumpled structure and

Made slippery surface

Hard, harder

Fractured MJ-II

Lithotypes type

Clear boundaries, macro

Coal rock composition can be identified,

Local slight dislocation

Native structure suffered

Minor damage, bedding

Legible

Coal or more complete

Coal crushing, pieces

Particle size is generally greater than

5mm

Exogenous fissures,

The crack of light bedding

Micro stagger, not crumpled

Development, construction occasionally

Slip marks

More rigid […]