NB/T 10761-2021Technical requirement of fully mechanized mining with solid backfilling and caving in coal mines (English PDF)
煤矿综合机械化固体充填与垮落协同采煤法技术要求
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Issued by
NEA
Level / Type
Industry · Recommended
Issue date
November 16, 2021
Implementation date
February 16, 2022
Scope
NB/T 10761-2021 is the English-translated version of 煤矿综合机械化固体充填与垮落协同采煤法技术要求.
NB/T 10761-2021 describes a coal mining method in which one fully mechanized face is divided along its length into a solid backfilling section and a caving section, with a transition zone between them where backfilling supports even out the roof pressure.
It sets the conditions under which the method is suitable, the layout of the mining and backfilling systems, the equipment set, and how the mining process and backfilling results are controlled and monitored.
The method is aimed at mines that must keep face output up while disposing of large volumes of waste rock. Equipment references include hydraulic supports for coal mines, scraper conveyors, belt conveyors and the NB/T standards on backfilling supports, crawler-mounted belt loaders and porous bottom-discharge conveyors. Issued on 16 November 2021, it has applied since 16 February 2022.
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Document preview — NB/T 10761-2021
National Standard of the People's Republic of China
- Classification
- D 15
Issued by: National Energy Administration of the People's Republic of China
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
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 of Standardization Documents" drafted.
1 Scope
This standard specifies the applicable conditions, mining and filling system layout, equipment composition, Control and monitoring of mining process and filling effect.
This standard is applicable to mines that not only need to ensure the production capacity of the working face, but also need large-scale treatment of gangue. Cooperative mining face.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.
GB 25974.1-2010 Hydraulic supports for coal mines - Part 1: General technical conditions
MT/T 105-2006 General technical conditions for scraper conveyors
MT820-2006 Technical conditions of belt conveyor for coal mine
NB/T 50120-2014 Technical conditions for solid filling hydraulic supports for coal mines
NB/T 51002-2012 Comprehensive mechanized solid filling coal mining method
NB/T 51021-2014 Technical conditions of crawler walking solid filling material belt loader
NB/T 51024-2014 Technical conditions of porous bottom discharge scraper conveyor for solid filling materials
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Solid backfilling and caving cooperative mining
In the same fully mechanized working face, the mining method of roof cooperating management by filling method and caving method is adopted along the inclined direction of the working face.
3.2 Backfilling section
Filling segment backfilingarea.
The solid filling method is used to manage the area of the roof in the working face of the solid filling method and the caving method.
3.3 Caving section
The caving method is used to manage the area of the roof in the co-mining working face of the solid filling method and the caving method.
3.4 Transition section
It is a part of the filling section (3.2), and the hydraulic support for filling coal mining is mainly arranged in the transition section of the working face to realize the mining between the filling section and the caving section. area of smooth transition of pressure.
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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.
Referenced standards
Normative references
- GB 25974.1-2010Powered support for coal mine - Part 1: General technical specification
- MT/T 105-2006General technical specification of face conveyor
- NB/T 51002-2012Methods for Solid-Filling Coal Mining with Comprehensive Mechanization
- NB/T 51021-2014Technical conditions of crawler-type belt transfer conveyor for solid backfilling materials
- NB/T 51024-2014Technical conditions of porous bottom-unloading scraper conveyor for solid backfilling materials
MT820-2006 · NB/T 50120-2014
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Related Standards
GB 25974.1-2010 — Powered support for coal mine - Part 1: General technical specification
NB/T 51002-2012 — Methods for Solid-Filling Coal Mining with Comprehensive Mechanization
NB/T 51021-2014 — Technical conditions of crawler-type belt transfer conveyor for solid backfilling materials
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NB/T 10761-2021
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