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BS EN 16907-7:2021

BS EN 16907-7:2021

$215.11

Earthworks – Hydraulic placement of extractive waste

Published By Publication Date Number of Pages
BSI 2021 102
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This European Standard gives general guidelines for the hydraulic placement of extractive wastes applicable, in particular, to the extractive industries. The scope of this European Standard includes any dam, confining embankment or other structure serving to contain, retain, confine or otherwise support such wastes on surface in a terrestrial environment. This standard therefore addresses the characterisation of the extractive waste for the purposes of hydraulic placement in the MWF both as part of the confining embankment and for safe storage, and in addition: – specifies minimum requirements for the data to be acquired before the design and execution stage of a hydraulic fill project; – provides guidelines for the selection of the type of confining embankment appropriate for the selected site; – provides guidelines for the selection and characterisation of the construction materials; – establishes general principles on how to design and execute the hydraulic fill project from pre deposition through operation to closure and rehabilitation; – provides guidelines for monitoring and quality control of all stages of the hydraulic fill project to ensure long-term safety and stability.

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
10 2 Normative references
11 3 Terms and definitions
17 4 Abbreviations
5 Development of hydraulic placement projects
19 6 Mine Waste Facility Characterization
7 Site and material characterization
7.1 General
20 7.2 Stages of the characterization process
22 7.3 Geotechnical characterization
7.3.1 General
7.3.2 Characterization of foundation and construction materials
23 7.3.3 Characterization of extractive waste
7.3.4 Sampling and in situ testing
7.3.4.1 Foundation and construction materials
7.3.4.2 Extractive waste
24 7.3.5 Laboratory testing
25 7.4 Geochemical characterization
7.4.1 General
27 7.4.2 Acid Rock Drainage
7.4.3 Sampling
7.4.3.1 General
7.4.3.2 Sampling during pre-deposition phase
28 7.4.3.3 Sampling during the operational phase
7.4.3.4 Sampling during the closure phase
7.4.4 Laboratory testing
7.4.4.1 General
7.4.4.2 Static testing
29 7.4.4.3 Mineralogical characterization
7.4.4.4 Chemical composition and short-term leaching
30 7.4.4.5 Kinetic testing
8 Extractive Waste Management Plan
9 Mine Waste Facility design, construction, operation and closure
9.1 Design objectives
31 9.2 Site selection
9.2.1 General
32 9.2.2 Ranking of alternative sites
33 9.3 Design elements
34 9.4 Design parameters
9.5 Risk management
9.6 Selection of confining embankment section
36 9.7 Construction of confining embankments
9.7.1 General
37 9.7.2 Pre-deposition embankment
9.7.3 Staged construction of confining embankments
38 9.8 Earth-structure design considerations
9.9 Seepage management considerations
39 9.10 Design of hydraulic deposition systems
9.10.1 General
9.10.2 Hydraulic transport
40 9.10.3 Hydraulic deposition
9.10.4 Sub-aqueous deposition
41 9.10.5 Sub-aerial deposition
9.11 Water management
9.11.1 General
9.11.2 Water balance
42 9.11.3 Flood management
43 9.11.4 Emergency spillway
9.11.5 Water reclaim system
9.12 Operation, Maintenance and Surveillance (OMS) Manual
44 9.13 Emergency planning
9.14 Closure
9.14.1 Closure planning and design
45 9.14.2 Ongoing review of the closure plan
46 9.14.3 Post-closure inspection requirements
10 Construction quality control
10.1 General
10.2 Confining embankment Construction Quality Assurance (CQA)
47 10.3 Disposal quality control
11 Instrumentation and monitoring
11.1 General
49 11.2 Performance monitoring
50 12 Inspection regimes
12.1 General
51 12.2 Competence
12.3 Background data for inspection and reporting
12.4 Technical inspections
12.4.1 General
52 12.4.2 Daily inspections
53 12.4.3 Weekly inspections
12.4.4 Additional technical inspections
12.4.5 Inspection records
12.4.6 Instrumentation records
12.4.7 Regular surveys
54 12.4.8 Annual tests
12.4.9 Competence
12.4.10 Annual reporting
12.5 Independent inspection regimes
12.5.1 The independent qualified engineer/inspector
55 12.5.2 Independent technical inspection procedures
12.5.3 Reporting
12.5.4 Recommendations
56 Annex A (informative)Non-standardized geotechnical tests on hydraulic fill
A.1 Introduction
A.2 Solids content test
A.2.1 Description
A.2.2 Apparatus
A.2.3 Procedure
57 A.2.4 Results
A.3 Particle settling velocity test
A.3.1 Description
A.3.2 Apparatus
A.3.3 Procedure
58 A.3.4 Results
A.4 Undrained settling test
A.4.1 Description
A.4.2 Apparatus
59 A.4.3 Procedure
60 A.4.4 Results
A.5 Drained settling test
A.5.1 Description
61 A.5.2 Apparatus
A.5.3 Procedure
62 A.5.4 Results
63 A.6 Air-drying test
A.6.1 Description
64 A.6.2 Apparatus
A.6.3 Procedure
65 A.6.4 Results
67 A.7 Slurry consolidation test
A.7.1 Description
A.7.2 Apparatus
A.7.3 Procedure
A.7.3.1 General
A.7.3.2 Preparation
68 A.7.3.3 Settlement
A.7.3.4 Consolidation
69 A.7.4 Results
A.7.4.1 General
71 A.7.4.2 Coefficient of consolidation, cv
A.7.4.3 Coefficient of compressibility, mv
A.7.4.4 Compression index, Cc
A.7.4.5 Coefficient of permeability, kv
73 Annex B (informative)MWF phases
75 Annex C (informative)Procedures for the construction of a MWF embankment
76 Annex D (informative)Earth-structure design considerations
D.1 General comments
D.2 Earth-structure design process
D.2.1 General
77 D.2.2 Design situations
D.2.3 Ultimate limit states
D.2.3.1 General
D.2.3.2 Overall stability – static conditions
D.2.3.3 Overall stability – seismic conditions
78 D.2.3.4 Hydraulic failure
D.2.3.5 Liquefaction
79 D.2.4 Serviceability limit states
D.3 Structures
80 Annex E (informative)Water reclaim options
82 Annex F (informative)Contents of typical OMS manual
83 Annex G (informative)Confining embankment CQA – Recommended testing frequency
84 Annex H (informative)CQA monitoring of hydraulic fill deposits
86 Annex I (informative)Instrumentation for a MWF
89 Annex J (informative)Technical inspection frequency for a MWF
90 Annex K (informative)Daily technical inspections
94 Annex L (informative)Weekly technical inspections
95 Annex M (informative)Programme for technical inspection and reporting
96 Annex N (informative)Contents of a technical inspection report

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BS EN 16907-7:2021
$215.11