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NB/T 11542-2024: Technical specification for cage type cable to floor bolt-grouting support in coal mine roadway
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| NB/T 11542-2024 | English | 299 |
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Technical specification for cage type cable to floor bolt-grouting support in coal mine roadway
| Valid |
NB/T 11542-2024
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Basic data | Standard ID | NB/T 11542-2024 (NB/T11542-2024) | | Description (Translated English) | Technical specification for cage type cable to floor bolt-grouting support in coal mine roadway | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | D24 | | Classification of International Standard | 73.040 | | Word Count Estimation | 14,185 | | Date of Issue | 2024-05-24 | | Date of Implementation | 2024-11-24 | | Issuing agency(ies) | National Energy Administration | NB/T 11542-2024: Technical specification for cage type cable to floor bolt-grouting support in coal mine roadway
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 73.040
CCSD24
Energy Industry Standards of the People's Republic of China
Technical specification for cage anchor cable bottom plate anchoring support in coal mine tunnels
mineroadway
Released on 2024-05-24
Implementation on November 24, 2024
The National Energy Administration released
Table of contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Support design 1
5 Support materials 2
6 Support construction 4
7 Construction quality inspection 6
8 Support monitoring 7
Appendix A (Informative) Anchor W steel guard plate processing 8
References 9
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.
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 was proposed by the China Coal Industry Association.
This document is under the jurisdiction of the Standardization Expert Group of China Coal Industry Association.
This document was drafted by. Jiaozuo Coal Industry (Group) Co., Ltd., Henan Energy Group Co., Ltd., China Coal Industry Association Production
Power Promotion Center.
The main drafters of this document are. Yang Heng, Jia Mingkui, Wei Shiyi, Zhao Shehui, Yang Jianzeng, Yu Hongqing, Tang Shijie, Li Guodong, Yang Yang, Li Xuechen,
Xu Laizheng, Yu Chunsheng, Guo Jun, Liu Shifeng, Hou Dianchen, Li Xinlei, Li Xiaoer.
Technical specification for cage anchor cable bottom plate anchoring support in coal mine tunnels
1 Scope
This document specifies the support design, support materials, support construction, construction quality inspection and other aspects of cage anchor cable bottom plate anchor grouting support technology for coal mine tunnels.
Measurement and support monitoring.
This document is applicable to the full-section anchor-grouting support equipment of tunnels with cage anchor cables for floor support under high stress and broken surrounding rock conditions in coal mines.
Design, construction, quality inspection and support monitoring.
2 Normative references
The contents of the following documents constitute 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 175 General purpose Portland cement
GB 50086 Technical specification for rock and soil anchor and shotcrete support engineering
GB/T 35056-2018 Technical specification for bolt support in coal mine tunnels
MT146.1-2011 Resin anchors Part 1.Anchoring agents
MT/T 942 Mining Anchor Cable
NB/T 11445 Technical specification for full-length prestressed anchor cable support for mining
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Cage type cable
An anchor cable that supports a plurality of cage-like structures in a steel strand anchoring section.
3.2
Spout extension tube
A hose connected to a deep hole in front of a metal grouting pipe has a grouting hole arranged on its body.
3.3
Reinforce time
After the initial support of the tunnel, the surrounding rock continues to be damaged, and the time for re-supporting before the surrounding rock deformation, crack depth, number, and opening suddenly increase.
Interval.
4 Support design
4.1 Site investigation and geomechanical assessment of tunnel surrounding rock
The on-site investigation and geomechanical assessment of tunnel surrounding rock shall be carried out in accordance with the requirements of GB/T 35056.
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