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GB 39496-2020: Safety regulation for tailings pond
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| GB 39496-2020 | English | 559 |
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Safety regulation for tailings pond
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GB 39496-2020
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Basic data | Standard ID | GB 39496-2020 (GB39496-2020) | | Description (Translated English) | Safety regulation for tailings pond | | Sector / Industry | National Standard | | Classification of Chinese Standard | Z61 | | Classification of International Standard | 73 | | Word Count Estimation | 30,392 | | Date of Issue | 2020-10-11 | | Date of Implementation | 2021-09-01 | | Older Standard (superseded by this standard) | AQ 2006-2005 | | Quoted Standard | GB 16423; GB 50135; GB 50191 | | Regulation (derived from) | National Standard Announcement No. 21 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the safety requirements for the construction, production and operation, mining, closure, safety inspection, emergency management of production and business units, and safety evaluation of tailings ponds. | GB 39496-2020: Safety regulation for tailings pond---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.
(Safety regulations for tailings pond)
ICS 73
Z61
National Standards of People's Republic of China
Replace AQ2006-2005
Safety regulations for tailings pond
2020-10-11 released
2021-09-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Basic regulations 4
5 Tailings pond construction 5
5.1 Investigation of tailings pond 5
5.2 General requirements for tailings pond design 5
5.3 Tailings dam design 6
5.4 Flood drainage design 10
5.5 Safety monitoring facility design 11
5.6 Construction and acceptance of tailings pond 11
6 Production and operation of tailings pond 12
6.1 General provisions 12
6.2 Inbound tailings index detection 12
6.3 Dam construction and discharge of tailings 13
6.4 Reservoir water level control and flood prevention 14
6.5 Seepage control 15
6.6 Earthquake resistance and seismic resistance 15
6.7 Safety monitoring of tailings pond 15
6.8 Reservoir area and surrounding conditions regulations 16
6.9 Treatment of hidden dangers and major dangers of tailings pond 16
7 Tailings pond stop 17
8 Tailings storage closure 18
9 Safety inspection of production and business units 18
9.1 General provisions 18
9.2 Flood control safety inspection 18
9.3 Safety inspection of tailings dam 19
9.4 Safety inspection of ore drawing 20
9.5 Safety inspection of tailings reservoir area 20
9.6 Safety inspection of monitoring system 20
9.7 Safety inspection of other facilities 20
10 Emergency management of production and business units 20
11 Safety Evaluation of Tailings Pond 21
11.1 General provisions 21
11.2 Safety pre-evaluation 22
11.3 Safety acceptance evaluation 22
11.4 Assessment of safety status 23
12 Tailings pond project archives 23
Appendix A (informative appendix) Sketch map of typical parameters of tailings pond 24
Appendix B (Normative Appendix) Tailings Naming Table 26
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces AQ2006-2005 "Safety Technical Regulations for Tailings Pond".
Compared with AQ2006-2005, except for structural adjustments and editorial changes, the main technical changes of this standard are as follows.
--- Deleted part of the normative references, and only quoted GB 16423, GB 50135 and GB 50191 (see Chapter 2, Chapter 2 of AQ2006-2005);
---Modified terms and definitions such as tailings ponds (see Chapter 3, Chapter 3 of AQ2006-2005), and added wet tailings ponds and dry tailings ponds.
Terms and definitions such as tailings pond (see Chapter 3);
--- Revise the grading standards of the first-class tailing pond and the second-class tailing pond (see 4.5, 4.1 of AQ2006-2005);
---In the analysis method of the anti-sliding stability of the tailings dam slope, the simplified Bishop method and the corresponding minimum safety factor are added (see 5.3.16);
---Added relevant requirements for dynamic seismic calculation of tailings dams (see 5.3.17);
---Modified the flood control standard of tailing pond (see 5.4.1, 5.4.2 of AQ2006-2005);
--- Deleted the content of "tailing pond safety" and "tailing pond utilization and reuse after tailing pond closure" (see Chapter 8 and Chapter 10 of AQ2006-2005);
---Added the content of "tailing pond mining" and "emergency management of production and business units" (see Chapter 7 and Chapter 10).
This standard was proposed and managed by the Ministry of Emergency Management of the People's Republic of China.
This standard is issued for the first time.
Safety regulations for tailings pond
1 Scope
This standard specifies the construction, production operation, stoping, closure, safety inspection, emergency management of production and business units, safety evaluation, etc. of tailings ponds
Safety requirements.
This standard applies to tailings ponds within the territory of the People's Republic of China.
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 16423 Safety Regulations for Metal and Nonmetal Mines
GB 50135 High-rise structure design standard
GB 50191 Code for seismic design of structures
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Tailings pond
A place used to store metal and non-metal mines for ore separation and discharge tailings.
3.2
Wet tailings pond
Inbound tailings have natural fluidity, and the tailings reservoir that discharges tailings by hydraulic conveyance.
3.3
Dry tailings pond
The tailings in the reservoir do not have natural fluidity, and the tailings reservoir with mechanical discharge of tailings and no water in the reservoir under non-flood operation conditions is adopted.
3.4
Full storage capacity
The volume of space enclosed by the elevation level of the dam crest, below the outer slope of the tailings dam, and above the bottom of the reservoir (excluding the volume of the dam constructed by non-tailings).
3.5
Effective storage capacity
The volume of space below the outer surface of the tailings dam and above the bottom of the silo for storing tailings (including suspended tailings slurry).
3.6
Flood storage capacity
The volume of space that can accumulate flood water above the initial flood level and below the design flood level.
3.7
Total storage capacity
Design the full storage capacity in the final state.
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