GB/T 39338-2020Technical requirements of solid-filling in fully-mechanized coal mining (English PDF)
综合机械化固体充填采煤技术要求
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 19, 2020
Implementation date
June 1, 2021
Scope
GB/T 39338-2020 is the English-translated version of 综合机械化固体充填采煤技术要求.
GB/T 39338-2020 is the Chinese standard "Technical requirements of solid-filling in fully-mechanized coal mining". Its scope clause reads: This standard specifies the terms and definitions, general requirements, technical requirements for system layout, and equipment related to the comprehensive mechanized solid filling coal mining method.
Preparation requirements, process requirements, rock formation movement control requirements, surrounding rock damage and surface movement prediction, and rock formation and surface movement observation requirements.
This standard is applicable to comprehensive mechanized solid filling coal mining. Its clauses include terms and definitions.
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Document preview — GB/T 39338-2020
National Standard of the People's Republic of China
- ICS
- 73.020
- Classification
- D 20
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General requirements
- 4.1 Design of backfill mining
- 4.2 Selection of solid filling materials
- 5 Technical requirements for system layout
- 5.1 Filling coal face layout
- 5.2 Layout of solid filling material conveying system
- 6 Equipment requirements
- 6.1 Integrated mechanized solid filling equipment
- 6.2 Comprehensive mechanized coal mining equipment
- 7 Process requirements
- 7.1 Coal mining and filling process
- 7.2 Filling process
- 8 Rock formation movement control requirements
- 9 Wall rock destruction and ground movement prediction
- 9.1 Calculation method of equivalent mining height
- 9.2 Prediction of surrounding rock destruction and surface movement after solid filling coal mining
- 10 Observation requirements for rock formation and surface movement
- 10.1 Observation of rock pressure in solid filling coal face
- 10.2 Monitoring of compressibility of filling materials
- 10.3 Observation of surface movement of coal mining with solid filling under buildings (structures)
- 10.4 Observation of surface movement of coal mining with solid filling under railway
- 10.5 Observation of surrounding rock failure and surface movement of coal mining with solid filling under water bodies
1 Scope
This standard specifies the terms and definitions, general requirements, technical requirements for system layout, and equipment related to the comprehensive mechanized solid filling coal mining method.
Preparation requirements, process requirements, rock formation movement control requirements, surrounding rock damage and surface movement prediction, and rock formation and surface movement observation requirements.
This standard is applicable to comprehensive mechanized solid filling coal mining.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB 25974.1 Hydraulic supports for coal mines Part 1.General technical conditions
GB 50215 Coal Industry Mine Design Code
AQ1056 Coal Mine Ventilation Capacity Approval Standard
NB/T 51019 Test method for compaction characteristics of solid filling materials
NB/T 51020 Technical conditions of solid filling hydraulic support for coal mine
Technical conditions of NB/T 51022 solid filling material vertical feeding pipe
NB/T 51023 Technical requirements for the self-weight feeding system of solid filling materials
Technical conditions of NB/T 51024 solid filling material porous bottom unloading scraper conveyor
Buildings, water bodies, railways and main shafts, coal pillars and coal mining specifications (State Administration of Work Safety, National Coal Mine Safety (Full Supervision Bureau, National Energy Administration, National Railway Administration)
Coal Mine Safety Regulations (State Administration of Work Safety, State Administration of Coal Mine Safety)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Solid filling material
Gangue, fly ash, open-pit mine strips and aeolian sand, etc. are harmless solid materials that are crushed and screened or can be directly filled into the goaf.
3.2 Comprehensive mechanized solid filling coal mining method
Coal mining method using mechanical method to drop coal and coal, conveyor coal transportation, hydraulic support support, and mechanical method to fill solid material
Comprehensive method of filling into the goaf.
3.3 Comprehensive mechanized solid filling coal mining face
The working face of comprehensive mechanized coal mining operation and comprehensive mechanized solid filling operation can be realized at the same time.
3.4 Solid filling coal mining hydraulic support for coal mine
It is a hydraulic support used in coal mine comprehensive mechanized solid-filling coal mining face, with the function of shielding filling and coal mining in parallel.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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