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GB/T 23561.1-2024: Methods for determining the physical and mechanical properties of coal and rock - Part 1: General requirements for sampling
Status: Valid GB/T 23561.1: Evolution and historical versions
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Methods for determining the physical and mechanical properties of coal and rock - Part 1: General requirements for sampling
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GB/T 23561.1-2024
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| GB/T 23561.1-2009 | English | 479 |
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Methods for determining the physical and mechanical properties of coal and rock -- Part 1: General requirements for sampling
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GB/T 23561.1-2009
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Basic data | Standard ID | GB/T 23561.1-2024 (GB/T23561.1-2024) | | Description (Translated English) | Methods for determining the physical and mechanical properties of coal and rock - Part 1: General requirements for sampling | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D04 | | Classification of International Standard | 73.010 | | Word Count Estimation | 14,152 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-08-01 | | Older Standard (superseded by this standard) | GB/T 23561.1-2009 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 23561.1-2024: Methods for determining the physical and mechanical properties of coal and rock - Part 1: General requirements for sampling
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ICS 73:010
CCSD04
National Standards of People's Republic of China
Replaces GB/T 23561:1-2009
Determination methods of physical and mechanical properties of coal and rock
Part 1: General provisions for sampling
Released on 2024-04-25
2024-08-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents"
Drafting:
This document is part 1 of GB/T 23561 "Determination of physical and mechanical properties of coal and rock": GB/T 23561 has been published
The following parts:
--- Part 1: General provisions for sampling;
--- Part 2: Method for determination of true density of coal and rock;
--- Part 3: Method for determination of density of coal and rock blocks;
--- Part 4: Calculation method of porosity of coal and rock;
--- Part 5: Determination of water absorption of coal and rock;
--- Part 6: Determination of moisture content in coal and rock;
--- Part 7: Determination of uniaxial compressive strength and calculation method of softening coefficient;
--- Part 8: Determination methods of deformation parameters of coal and rock;
--- Part 9: Methods for determination of triaxial strength and deformation parameters of coal and rock;
--- Part 10: Determination of tensile strength of coal and rock;
--- Part 11: Determination of shear strength of coal and rock;
--- Part 12: Determination of the solidity coefficient of coal;
--- Part 13: Method for determination of point load strength index of coal and rock;
--- Part 14: Method for determination of rock expansion rate;
--- Part 15: Method for determination of rock expansion stress;
--- Part 16: Method for determination of rock disintegration resistance index:
This document replaces GB/T 23561:1-2009 "Methods for determination of physical and mechanical properties of coal and rock Part 1: General rules for sampling
Compared with GB/T 23561:1-2009, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) The scope of application has been changed (see Chapter 1, Chapter 1 of the:2009 edition);
b) The normative references have been changed (see Chapter 2, Chapter 2 of the:2009 edition);
c) Added the provision of "plastic wrap" as the specimen sealing material (see 4:2);
d) The collection of geological data during sampling has been modified (see 5:1:1, 5:1:1 of the:2009 edition);
e) The rock sampling requirements for the determination of physical and mechanical properties have been changed (see 5:2:2:1, 5:2:2:1 of the:2009 edition);
f) The rock formation sampling requirements for rock formation impact tendency determination have been changed (see 5:2:2:2, 5:2:2:2 of the:2009 edition);
g) Changed the bottom plate sampling requirements (see 5:2:2:3, 5:2:2:3 of the:2009 edition);
h) The sample specifications for single thin and medium-thick coal seam sampling have been changed (see 6:1:1, 6:1:1 of the:2009 edition);
i) The requirements for core diameter in core sampling have been changed (see 6:2:3, 6:2:3 of the:2009 edition);
j) Added sampling requirements for broken coal and soft rock (see 6:4);
k) Changed the units and some size requirements in Table 1 (see Table 1, Table 1 of the:2009 edition);
l) The numbered coating materials have been changed (see 7:2, 7:2 of the:2009 edition);
m) The packaging requirements have been changed (see 8:1:1, 8:1:1 of the:2009 edition);
n) The packing requirements have been changed (see 8:2, 8:2 of the:2009 edition):
Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents:
This document is proposed and coordinated by the China Coal Industry Association:
This document was drafted by: Coal Science and Technology Research Institute Co:, Ltd:, Liaoning University of Engineering and Technology, China University of Mining and Technology (Beijing), Coal Science and Technology Research Institute Co:, Ltd:
China Coal Research Institute Co:, Ltd:, Xi’an University of Science and Technology, and China Coal Technology and Engineering Mining Research Institute Co:, Ltd:
The main drafters of this document are: Li Hongyan, Huo Zhonggang, Sun Zhongxue, Deng Zhigang, Li Hongjie, Mo Yunlong, Wang Junguang, Liu Bo, Li Dan, Liu Xue,
Qi Qingxin, Zhao Shankun, Dong Guowei, and Pan Junfeng:
This document was first published in:2009 and this is the first revision:
Introduction
GB/T 23561 aims to describe the method for determining the physical and mechanical parameters of coal and rock in the laboratory:
The measurement requirements of the mechanical parameters are planned to consist of 16 parts:
--- Part 1: General provisions for sampling: The purpose is to describe the basic physical and mechanical properties of coal and rock formations related to coal seams:
Sampling method for coal and rock samples required for determination of impact tendency:
--- Part 2: Method for determination of true density of coal and rock: The purpose is to use the pycnometer method or gas expansion method true density analyzer to measure
Determine the true density of coal and rock:
--- Part 3: Method for determination of density of coal and rock blocks: The purpose is to determine the density of coal and rock blocks by sealing method and volumetric method:
density:
--- Part 4: Calculation method of porosity of coal and rock: The purpose is to determine the porosity of coal and rock:
--- Part 5: Determination of water absorption of coal and rock: The purpose is to determine the water absorption of coal and rock that does not disintegrate, dissolve, shrink or swell when exposed to water:
The water absorption of rocks:
--- Part 6: Determination of moisture content of coal and rock: The purpose is to determine the moisture content of coal and rock by drying method:
--- Part 7: Determination of uniaxial compressive strength and calculation method of softening coefficient: The purpose is to determine the coal that can be processed into standard test pieces:
And the uniaxial compressive strength of rock and the calculated softening coefficient:
--- Part 8: Determination of deformation parameters of coal and rock: The purpose is to determine the uniaxial deformation of coal and rock that can be processed into standard specimens:
Deformation parameters under compression:
--- Part 9: Method for determination of triaxial strength and deformation parameters of coal and rock: The purpose is to determine the triaxial strength and deformation parameters of coal that can be processed into standard test pieces:
and the strength and deformation parameters of rocks under axisymmetric triaxial stress conditions:
--- Part 10: Method for determination of tensile strength of coal and rock: The purpose is to determine the tensile strength of coal and rock that can be processed into standard test pieces:
Tensile strength:
--- Part 11: Determination of shear strength of coal and rock: The purpose is to determine the shear strength of coal and rock:
--- Part 12: Determination method of solidity coefficient of coal: The purpose is to determine the solidity coefficient of coal:
--- Part 13: Method for determination of point load strength index of coal and rock: The purpose is to determine the point load strength index of coal and rock
--- Part 14: Method for determination of rock expansion rate: The purpose is to determine the free expansion rate and lateral restraint expansion rate of rock:
--- Part 15: Method for determination of rock expansion stress: The purpose is to determine the lateral restrained expansion stress of rock:
--- Part 16: Method for determination of rock disintegration resistance index: The purpose is to determine the disintegration resistance index of rocks that are prone to disintegration when exposed to water:
Determination methods of physical and mechanical properties of coal and rock
Part 1: General provisions for sampling
1 Scope
This document specifies the equipment, tools and packaging materials, technical requirements,
Sampling methods, recording and numbering, sealing and packing, and post-processing of coal samples and rock samples:
This document is applicable to the determination of the basic physical and mechanical properties of coal and rocks in coal seam-related strata and the coal samples required for impact tendency testing:
Sampling of rock samples:
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document:
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document:
GB/T 19222 Methods for collecting coal and rock samples
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Coal sample coalsample
A coal block that can basically maintain the original structure and physical state of the coal body after collection:
3:2
Rock sample rock sample
Rock blocks that can basically maintain the original structure and physical state of the rock mass after collection:
4 Equipment, tools and packaging materials
4:1 Equipment and Tools
The main sampling equipment and tools include: coal electric drill, pneumatic pick, geological drill (for drilling coal and core), and cutting saw:
4:2 Packaging equipment
The packaging equipment of the test samples is as follows:
a) Plastic sheets, cling film, and wide tapes with a certain thickness and strength;
b) Containers, paraffin;
c) Sawdust, foam plastics, wooden boxes:
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