ISO 19426-4:2018

DRAFT INTERNATIONAL STANDARD
ISO/DIS 19426-4
ISO/TC 82 Secretariat: DIN
Voting begins on: Voting terminates on:
2017-05-04 2017-07-26
Structures for mine shafts —
Part 4:
Conveyances
Structures de puits de mine —
Partie 4: Titre manque
ICS: 73.020
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 19426-4:2017(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2017

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ISO/DIS 19426-4:2017(E)

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ii © ISO 2017 – All rights reserved

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ISO/DIS 19426-4:2017(E)
TABLE OF CONTENTS
Foreword . vi
Introduction . vii
1. Scope . 1
2. Normative references . 1
3. Terms and Definitions . 3
4. Symbols . 3
5. Materials . 5
5.1 Steel . 5
5.1.1 High strength steel grades . 5
5.1.2 Cold temperature operation. 5
5.2 Aluminium alloys . 5
6. Nominal operating loads . 5
7. General operating loads. 6
7.1 Permanent loads . 6
7.2 Vertical imposed loads due to holding devices . 6
7.2.1 Holding device engagement load . 6
7.2.2 Holding devices securing load . 6
7.3 Lateral imposed loads . 7
7.3.1 Fixed guide systems in vertical shafts . 7
7.3.2 Rope guide systems . 7
7.3.3 Decline shaft conveyance wheel loads. 8
7.4 Winder system loads . 8
7.4.1 Acceleration/deceleration load . 8
7.4.2 Trip-out load . 8
7.4.3 Tail-rope load. 8
7.4.4 Vertical friction load . 8
7.5 Roof loads . 9
8. Personnel winding loads . 9
8.1 Standing personnel load . 9
8.2 Seated personnel load. 9
8.3 Loading of cages . 9
8.4 Loading of cages in decline shafts . 9
8.5 Dogging system load. 9
9. Material and equipment winding loads .10
9.1 Floor loads .10
9.1.1 Static load .10
9.1.2 Impact loads .10
9.2 Underslung or trailing loads .12
10. Rock winding loads .12
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ISO/DIS 19426-4:2017(E)
10.1 Skip loads.12
10.1.1 General .12
10.1.2 Static rock loads .12
10.1.3 Bridle and transom loads during filling .12
10.1.4 Reference rock pressure.13
10.1.5 Pressure during filling or travelling in the shaft.13
10.1.6 Pressures during emptying.14
10.1.7 Load on tipping rollers .14
10.1.8 Skip return-stop loads .15
10.2 Kibble loads .15
10.2.1 Static rock or sludge loads .15
10.2.2 Reference rock or sludge pressure .15
10.2.3 Pressure during filling .15
10.2.4 Pressures during emptying.16
10.2.5 Heavy kibble payloads.16
11. Emergency loads .16
11.1 Rope emergency load.16
11.1.1 Permanent operating conveyances with fixed rope winders .16
11.1.2 Permanent operating conveyances with friction winders .16
11.1.3 Temporary equipping, maintenance and inspection conveyances.16
11.1.4 Slung equipment and conveyances .16
11.1.5 Kibbles and kibble cross-heads.17
11.2 Emergency drop-back loads .17
11.2.1 General .17
11.2.2 All permanent conveyances .17
11.2.3 Kibbles and kibble cross-heads.17
11.3 Roof impact loads .17
11.4 Skip loads.17
11.4.1 General .17
11.4.2 Reference rock pressure.17
11.4.3 Pressure during filling or travelling in the shaft.18
11.5 Emergency arresting device loads .19
11.5.1 Overspeed device.19
11.6 Application of emergency loads.19
12. Design procedures .19
12.1 Design loads .19
12.2 Design codes .19
12.3 Design for emergency loads .20
12.3.1 Steel components .20
12.3.2 Aluminium components .20
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ISO/DIS 19426-4:2017(E)
12.3.3 Special considerations.20
12.4 Fatigue.20
13. Construction requirements .20
13.1 Confirmation of Design by Testing .20
13.1.1 Testing of operating mechanisms .20
13.2 Construction tolerances .21
Annex A: Load factors and load combinations .22
A.1 General .22
A.2 Operating conditions.22
A.3 Emergency conditions.22
A.4 Conveyance installation .23
Annex B: Examples of Tipping Roller and Skip Return-Stop Loads .24
B.1 Tipping roller load .24
B.1.1 Vertical shafts .24
B.1.2 Decline shafts .24
B.2 Skip return-stop loads .27
B.2.1 Vertical shafts and decline shafts .27
Bibliography .27
Standards.27
Other publications.27



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ISO/DIS 19426-4:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part
2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committee may decide to publish other types of normative document:
 an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical
experts in an ISO working group and is accepted for publication if it is approved by more than 50
% of the members of the parent committee casting a vote;
 an ISO Technical Specification (ISO/TS) represents an agreement between the members of a
technical committee and is accepted for publication if it is approved by 2/3 of the members of the
committee casting a vote.
An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for
a further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or
ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be
transformed into an International Standard or be withdrawn.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/NP 19426 was prepared by Technical Committee ISO/TC 82, Mining.
ISO/NP 19426 consists of the following parts, under the general title Structures for mine shafts:
 Part 1: Terms and definitions.
 Part 2: Head frame structures.
 Part 3: Sinking stages.
 Part 4: Conveyances.
 Part 5: Shaft system structures.

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ISO/DIS 19426-4:2017(E)
Introduction
Many mining companies, and many of the engineering companies which provide designs for mines,
operate globally so this International Standard was developed in response to a desire for a unified global
approach to the safe and robust design of structures for mine shafts. The characteristics of ore bodies,
such as their depth and shape, vary in different areas so different design approaches have been
developed and proven with use over time in different countries. Bringing these approaches together in
this International Standard will facilitate improved safety and operational reliability.
In most countries where mining is conducted it is governed by legislative authorities, and is subject to
a set of regulations. This International Standard cannot, and it is not intended to, replace any of these
regulations, but it is intended to supplement these regulations by providing rational guidance to enable
engineers to design appropriate structures for mine shafts. For this reason this International Standard
should be used with a full understanding of local regulations, and it should be recognised that some of
the clauses may not be relevant in all countries.
The majority of the material in this International Standard deals with the loads to be applied in the design
of structures for mine shafts. Some principles for structural design are given, but for the most part it is
assumed that local Standards will be used for the structural design. It is also recognised that typical
equipment varies from country to country, so the clauses in this International Standard do not specify
application of the principles to specific equipment. However, in some cases examples demonstrating
the application of the principles to specific equipment are provided in Informative Appendices.


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Structures for Mine Shafts — Part 4: Conveyances

Structures for Mine Shafts – Part 4: Conveyances
1. Scope
This document defines the loads and load combinations to be adopted and specifies the design
procedures to be used for the design of the steel and aluminium alloy structural members of
conveyances used for the transport of men, materials, equipment and rock in vertical and decline shafts.
The conveyances covered by this document include personnel or material cages (or both), skips,
kibbles, equipping skeleton cages, inspection cages, bridles, crossheads and counterweights.
This document is not intended to be used for the design of ropes, sheaves or attachments. The design
of ropes, i.e. sizes, is covered in the relevant national legislation.
This document does not cover chairlifts.
This document does not cover matters of operational safety which are required to comply with the
provisions of the regulations of the relevant jurisdiction. Where specific country requirements exist
which relate to and interact with the requirements of this document, or which are supplementary to this
document, it is expected that the user will take these into account when using this document.
This standard adopts a limit states design philosophy.
NOTE 1: Exceptions to the provisions of this document are permitted only if the required safety margins
are proved by acceptable analytical or experimental procedures.
2. Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
Use of appropriate national standards in place of the standards listed below should be done with
caution, always complying with national construction regulations and safety margins.
EN 485-1, Aluminium and aluminium alloys – Sheet, strip and plate – Part 1: Technical conditions for
inspection and delivery.
EN 485-2, Aluminium and aluminium alloys – Sheet, strip and plate – Part 2: Mechanical properties.
EN 485-3, Aluminium and aluminium alloys – Sheet, strip and plate – Part 3: Tolerances on dimensions
and form for hot-rolled products.
EN 485-4, Aluminium and aluminium alloys – Sheet, strip and plate – Part 4: Tolerances on shape and
dimensions for cold-rolled products.
EN 515, Aluminium and aluminium alloys – Wrought products – Temper designations.
EN 573-3, Aluminium and aluminium alloys – Chemical composition and form of wrought products –
Part 3: Chemical composition and form of products.
EN 755-1, Aluminium and aluminium alloys – Extruded rod/bar, tube and profiles – Part 1: Technical
conditions for inspection and delivery.
EN 755-2, Aluminium and aluminium alloys – Extruded rod/bar, tube and profiles – Part 2: Mechanical
properties.

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ISO/DIS 19426-4:2017(E)
EN 755-3, Aluminium and aluminium alloys – Extruded rod/bar, tube and profiles – Part 3: Round bars,
tolerances on dimensions and form.
EN 755-4, Aluminium and aluminium alloys – Extruded rod/bar, tube and profiles – Part 4: Square bars,
tolerances on dimensions and form.
EN 755-5, Aluminium and aluminium alloys – Extruded rod/bar, tube and profiles – Part 5: Rectangular
bars, tolerances on dimensions and form.
EN 755-7, Aluminium and aluminium alloys – Extruded rod/bar, tube and profiles – Part 7: Seamless
tubes, tolerances on dimensions and form.
ISO 2394, General Principles on Reliability for Structures.
EN 1999-1-1, Eurocode 9 – Part 1: Design of aluminium structures – Part 1: General structural rules.
EN 1999-1-3, Eurocode 9 – Part 1: Design of aluminium structures – Part 3: Structures susceptible to
fatigue.
EN 1999-1-4, Eurocode 9 – Par 1: Design of aluminium structures – Part 4: Cold-formed structural
sheeting.
EN 10025-1, Hot rolled products of structural steels – Part 1: General technical delivery conditions.
EN 10025-2, Hot rolled products of structural steels – Part 2: Technical delivery conditions for non-alloy
structural steels.
ISO 10721-1, Steel structures - Part 1: Materials and design.
ISO 10721-2, Steel Structures – Part 2: Fabrication and erection.
EN 12020-1, Aluminium and aluminium alloys – Extruded precision profiles in alloys EN AW-6060 and
EN AW-6063 – Part 1: Technical conditions for inspection and delivery.
EN 12020-2, Aluminium and aluminium alloys – Extruded precision profiles in alloys EN AW-6060 and
EN AW-6063 – Part 2: Tolerances on dimensions and form.
EN 10137-1, Plates and wide flats made of high yield strength structural steels in quenched and
tempered or hardened conditions. Part 1: General delivery conditions.
EN 10137-2, Plates and wide flats made of high yield strength structural steels in quenched and
tempered or hardened conditions. Part 2: Delivery conditions for quenched and tempered steels .
EN 10149-1, Specification for hot-rolled flat products made of high yield strength steels for cold forming.
Part 1: General delivery conditions.
EN 10149-2, Specification for hot-rolled flat products made of high yield strength steels for cold forming.
Part 2: Delivery conditions for thermomechanically rolled steels.
EN 10149 3, Specification for hot-rolled flat products made of high yield strength steels for cold forming.
Part 3: Delivery conditions for normalized or normalized rolled steels.
ISO 19426-1, Structures for mine shafts – Part 1: Terms and definitions.
ISO 19426-2, Structures for mine shafts – Part 2: Headgear structures.
ISO 19426-5, Structures for mine shafts – Part 5: Shaft system structures.
ISO 22111, Bases for design of structures -- General requirements.
ISO 60079, Explosive atmospheres - Equipment - General requirements.
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ISO/DIS 19426-4:2017(E)
3. Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
 ——ISO Online browsing platform: available at http://www.iso.org/obp
 ——IEC Electropedia: available at http://www.electropedia.org
For the purposes of this document, the definitions in ISO 19426-1 apply.
4. Symbols
For the purposes of this document, the following symbols apply.
A is the operating winder system acceleration/deceleration load (N)
o
A is the trip-out winder deceleration load (N)
t
is the maximum permitted deceleration of the conveyance when the dogging system
a
2
D
activates (m/s )
2
operating winder system peak acceleration/deceleration (m/s )
a
o
2
is the trip-out winder system peak deceleration (m/s )
a
t
is the impact load during loading of the conveyance (N)
C
C is the horizontal impact load from rolling stock (N)
h
C is the vertical impact load from rolling stock (N)
v
C
is the conveyed load (P, ΣM, U or R, as appropriate) (N)
y
is the dogging system load (N)
D
d is the deformation of the skip door (m)
i
E is the emergency dropback load (N)
j
E is the rope emergency load (N)
r
is the maximum moving beam misalignment of the guide (m); lateral flare dimension (see
e
figure 1)
is the design load, or load effect (N, Nm).
F
is the friction induced vertical load (N)
F
v
are the permanent loads, including the self-weight of the structure and the structural
G and G
components, in newtons (N)
1 2
is the conveyance self-weight load (N)
G
c
2
is the acceleration due to gravity (= 9,8 m/s )
g
is the lateral imposed load (N)
H

H is the rubbing block load (N)
r
H is the lateral slipper plate load (N)
s
h is the length through which the rock falls (m)
d
is the height to which the skip is filled above the lowest point of the skip door (m)
h
h
is the station-mounted holding device engagement load (N).
K
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ISO/DIS 19426-4:2017(E)
is the conveyance-mounted holding device load (N)
K
c
is the lateral stiffness of the steelwork at the guide mid-span or at the end of the flare (N/m)
K
g
is the buffer spring stiffness (N/m)
K
s
is the guide span, bunton to bunton, or the length of the flare (m).
L
is the distance between the pivot and the centre of gravity of the skip, or the radial door (m)
L
1
is the distance between the pivot and the return-stop (or the tipping roller) (m).
L
2
is the length of the crawler track (m).
L
T
is the load from each item of rolling stock or equipment (N)
M
is the heavier axle load (N)
M
1
is the conveyance mass including all attachments, excluding rope attachments (kg)
m
c
is the mass of largest rock that will be loaded into the skip (kg)
m
r
is the load from personnel (N)
P
2
p to p is the skip pressures (N/m )
o 3
is the dominant imposed load or load effect (N, Nm).
Q
1
are the additional independent imposed loads, or load effects (N, Nm).
Q to Q
2 n
is the emergency load or load effect (N, Nm)
Q
e
is the static rock or sludge load (N)
R
R is the bridle/transom load during filling (N)
d
R
f is the friction load on the skip door (N)
R
i is the single rock impact vertical load on the skip door (N)
R
k is the single rock impact horizontal load on the skip sides (N)
R
s is the load on skip return-stops (N)
R
t is the load on tipping rollers (N)
is the load due to the tail rope (N)
T
is the load due to underslung equipment (N)
U
is the maximum depth of rock or sludge contained in the conveyance (m)
z
is the impact energy of the falling rock (J)
Z
i
is the dynamic impact factor
α
d
is the horizontal load impact factor
α
h
is the holding device impact factor
α
k
α
is the rock impact factor
p
is the tipping impact factor.
α
t
is the vertical load impact factor
α
v
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ISO/DIS 19426-4:2017(E)
is the rope emergency factor
β
is the partial load factor for emergency loads.
γ
e
is the partial load factor for imposed loads
γ
fi
are the partial load factors for permanent loads;
γ and γ
g1 g2
are the partial load factors for imposed loads
γ to γ
f1 fn
is the partial load factor for permanent loads.
γ
gi
friction factor between the skip payload and the door
μ
3
is the bulk density of rock (kg/m )
ρ
are the load combination factors
Ψ to Ψ
2 n

5. Materials
5.1 Steel
Unless otherwise specified by the client, the materials used for structural steel members shall comply
with the requirements of EN 10025-1 and EN 10025-2.
5.1.1 High strength steel grades
Unless otherwise specified by the client, the materia
...