BS 7861-1:1996

Superseded

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Strata reinforcement support system components used in coal mines Specification for rockbolting

Available format(s)

Hardcopy , PDF

Superseded date

10-31-2007

Language(s)

English

Published date

10-15-1996

Publisher

British Standards Institution

Committees responsible
Foreword
1 Scope
2 References
3 Definitions
4 Steel rockbolts and components
5 Glass reinforced plastics (grp) rockbolts and
      components
6 Resin
Annexes
A (normative) Tensile test on steel rockbolt
B (normative) Tensile test on rockbolt threaded end
C (normative) Shear test on rockbolt/resin system
D (normative) Determination of bond strength and
      system stiffness
E (normative) Nut breakout torque test
F (normative) Tensile test to establish flattening and
      pull-through loads of steel domed washer plates
G (normative) Alignment test
H (normative) Electrical resistance test on grp
      material
J (normative) Fire resistance test on grp rockbolt
      material
K (informative) An example of a tensile test on grp
      rockbolts
L (normative) Tensile test to establish pull-through
      loads of grp domed washer plates
M (normative) Determination of uniaxial compressive
      strength (ucs) of resin
N (normative) Determination of elastic modulus of
      resin
P (normative) Determination of creep of resin
Tables
1 Colour coding of rockbolts
2 Colour coding of resin
3 Resin setting times
M.1 Test specimen times
M.2 Loading rate
N.1 Test specimen prisms sizes
N.2 Loading levels for determination of elastic modulus
P.1 Loading levels for determination of creep
Figures
1 Components of a steel rockbolt assembly in situ
2 Profile of 21.7 mm steel rockbolt
3 Steel domed washer plate
4 Steel conical seat
B.1 Arrangement for tensile test on steel rockbolt
      threaded end
B.2 Arrangement for tensile test on grp rockbolt
      threaded end
C.1 Diagram of shear frame for rockbolt/resin system
C.2 Typical shear force/shear displacement graph
D.1 Arrangement for double embedment pull test
F.1 Load test arrangement for pull-through of steel
      domed washer plate
F.2 Load/extension graph: domed washer plate test
G.1 Alignment of capacity of conical seat and domed
      washer plate assembly
H.1 Test of electrical resistance
J.1 Draught-free cabinet for flame test
K.1 Bolted clamp for tensile test
L.1 Load test arrangement for grp components
N.1 Arrangement for elastic modulus test and creep
      test: machine platen
P.1 Strain/time graph
List of references

Specifies dimensions and tests for steel and glass reinforced plastics (GRP) rockbolts and rockbolt assemblies and specifies resin materials and performance.

Committee	MRE/1
DevelopmentNote	Supersedes 95/709790 DC (10/2005)
DocumentType	Standard
Pages	36
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS 7861-1:2007
Supersedes	95/709790 DC : AUG 95

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