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NB/T 11261-2023: Code of practice for construction and quality acceptance of freezing holes in coal mines
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| NB/T 11261-2023 | English | 359 |
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Code of practice for construction and quality acceptance of freezing holes in coal mines
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NB/T 11261-2023
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Basic data | Standard ID | NB/T 11261-2023 (NB/T11261-2023) | | Description (Translated English) | Code of practice for construction and quality acceptance of freezing holes in coal mines | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | D15 | | Classification of International Standard | 73.020 | | Word Count Estimation | 18,189 | | Date of Issue | 2023-05-26 | | Date of Implementation | 2023-11-26 | | Issuing agency(ies) | National Energy Administration | NB/T 11261-2023: Code of practice for construction and quality acceptance of freezing holes in coal mines
---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 73.020
CCSD15
Energy Industry Standards of the People's Republic of China
Coal mine freezing hole construction and quality acceptance specifications
Published on 2023-05-26
Implemented on 2023-11-26
Released by the National Energy Administration
Table of contents
Preface III
1 Scope 1
2 Normative reference documents 1
3 Terms and Definitions 1
4 Construction preparation 2
4.1 Basic requirements 2
4.2 Preparation 2
4.3 Drilling rig foundation construction 3
4.4 Drilling rig equipment selection 3
4.5 Selection of inclinometer and correction equipment 5
4.6 Drill tower installation 5
4.7 Mud circulation system 6
4.8 Mud preparation 6
5 Freeze hole construction 7
5.1 Measurement and setting out 7
5.2 Freezing hole opening 7
5.3 Freeze hole drilling 7
5.4 Frozen hole inclinometer 8
5.5 Freeze hole anti-deviation 8
5.6 Correction of frozen holes 8
5.7 Compilation of inclinometer data 9
5.8 Drilling rig dismantling 9
6 Construction quality requirements 9
6.1 Hole depth and hole spacing quality requirements 9
6.2 Drilling deflection quality requirements 10
6.3 Annular space filling quality requirements 10
6.4 Green construction requirements 10
7 Freezing hole acceptance10
7.1 Basic requirements10
7.2 Main control project inspection method 11
7.3 General project inspection methods 11
Appendix A (informative) Original record sheet for coal mine freezing hole construction 12
Reference 13
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed by the China Coal Industry Association.
This document is under the jurisdiction of the Coal Industry Coal Mine Special Equipment Standardization Technical Committee.
This document was drafted by. Beijing China Coal Mining Engineering Co., Ltd., China Coal Science and Industry Group Co., Ltd., Tiandi Technology Co., Ltd.
Company, Tangshan Kailuan Construction Group Company, Inner Mongolia Yitai Guanglian Coal Chemical Co., Ltd.
The main drafters of this document. Zhao Yuming, Li Gongzhou, Li Fangzheng, Wang Heng, Guo Lei, Li Ning, Cui Jianjun, Cui Hao, Xu Shurong, Gao Wei, Zhang Jiwei,
Han Yufu, Chen Honglei, Ye Yuxi, Wushijie, Zhang Zhenjin, Zhang Qingwu, Liu Yangjun.
Coal mine freezing hole construction and quality acceptance specifications
1 Scope
This document stipulates the construction preparation, construction process, equipment selection, and construction quality requirements for frozen holes in coal mines, and stipulates the quality inspection of frozen holes.
Collection method.
This document is applicable to the construction and quality acceptance of frozen holes when drilling shafts in coal mines using the freezing method.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB 12523 Environmental noise emission standards at construction site boundaries
GB/T 15663.2 Coal mine scientific and technological terminology Part 2.Tunnel engineering
GB 50057-2010 Design Code for Lightning Protection of Buildings
GB/T 50905 Green construction specifications for construction projects
GB/T 51277 Mine shaft freezing method construction and quality acceptance standards
GB/T 51288 Mine inclined shaft freezing method construction and quality acceptance standards
MT/T 1054 Mining Drilling Gyro Inclinometer
MT/T 1124 Technical Specifications for Coal Mine Freezing Method for Shaft Excavation Engineering
3 Terms and definitions
The terms and definitions defined in GB/T 15663.2 and the following apply to this document.
3.1
freezing hole freezinghole
Drill holes for installing the freezer.
[Source. GB/T 15663.2-2008,3.6]
3.2
hole depth holedepth
The length of the drilling axis.
[Source.GB 9151-1988,5.3.2]
3.3
targetarea
On a certain horizontal plane, the allowable deviation range of the drilling trajectory landing point.
[Source. GB/T 51277-2018, 2.0.13, with modifications]
3.4
Measure the deflection amount and deflection direction of the frozen hole at different depths.
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