ASTM D4506-08
(Test Method)Standard Test Method for Determining In Situ Modulus of Deformation of Rock Mass Using Radial Jacking Test
Standard Test Method for Determining In Situ Modulus of Deformation of Rock Mass Using Radial Jacking Test
SIGNIFICANCE AND USE
Using this test method, a volume of rock large enough to take into account the influence of discontinuities on the properties of the rock mass is loaded. The test should be used when values are required which represent the true rock mass properties more closely than can be obtained through less expensive uniaxial jacking tests or other procedures.
Note 1—The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D 3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D 3740 provides a means of evaluating some of those factors.
SCOPE
1.1 This test method is used to determine the in situ modulus of deformation of rock mass by subjecting a test chamber of circular cross section to uniformly distributed radial loading; the consequent rock displacements are measured, from which elastic or deformation moduli may be calculated. The anisotropic deformability of the rock can also be measured and information on time-dependent deformation may be obtained.
1.2 This test method is based upon the procedures developed by the U.S. Bureau of Reclamation featuring long extensometers (1). An alternative procedure is also available and is based on a reference bar (2).
1.3 Application of the test results is beyond the scope of this test method, but may be an integral part of some testing programs.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D4506 − 08
StandardTest Method for
Determining In Situ Modulus of Deformation of Rock Mass
1
Using Radial Jacking Test
This standard is issued under the fixed designation D4506; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D653 Terminology Relating to Soil, Rock, and Contained
Fluids
1.1 This test method is used to determine the in situ
D3740 Practice for Minimum Requirements for Agencies
modulus of deformation of rock mass by subjecting a test
Engaged in Testing and/or Inspection of Soil and Rock as
chamber of circular cross section to uniformly distributed
Used in Engineering Design and Construction
radial loading; the consequent rock displacements are
D4403 Practice for Extensometers Used in Rock
measured, from which elastic or deformation moduli may be
calculated. The anisotropic deformability of the rock can also
3. Terminology
be measured and information on time-dependent deformation
3.1 Definitions—See Terminology D653 for general defini-
may be obtained.
tions.
1.2 This test method is based upon the procedures devel-
3.2 Definitions of Terms Specific to This Standard:
oped by the U.S. Bureau of Reclamation featuring long
2 3.2.1 deformation—the change in the diameter of the exca-
extensometers (1). An alternative procedure is also available
vation in rock (test chamber).
and is based on a reference bar (2).
1.3 Applicationofthetestresultsisbeyondthescopeofthis 4. Summary of Test Method
test method, but may be an integral part of some testing
4.1 A circular test chamber is excavated and a uniformly
programs.
distributed pressure is applied to the chamber surfaces by
means of flat jacks positioned on a reaction frame. Rock
1.4 The values stated in inch-pound units are to be regarded
deformation is measured by extensometers placed in boreholes
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only perpendicular to the chamber surfaces. Pressure is measured
with a standard hydraulic transducer. During the test, the
and are not considered standard.
pressure is cycled incrementally and deformation is read at
1.5 This standard does not purport to address all of the
each increment. The modulus is then calculated. To determine
safety concerns, if any, associated with its use. It is the
time-dependent behavior, the pressure is held constant and
responsibility of the user of this standard to establish appro-
deformation is observed over time.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Significance and Use
2. Referenced Documents 5.1 Usingthistestmethod,avolumeofrocklargeenoughto
3 take into account the influence of discontinuities on the
2.1 ASTM Standards:
properties of the rock mass is loaded. The test should be used
when values are required which represent the true rock mass
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD18onSoiland
properties more closely than can be obtained through less
Rock and is the direct responsibility of Subcommittee D18.12 on Rock Mechanics.
expensive uniaxial jacking tests or other procedures.
Current edition approved July 1, 2008. Published July 2008. Originally approved
NOTE 1—The quality of the result produced by this standard is
in 1985. Last previous edition approved in 2006 as D4506 – 02 (2006). DOI:
dependent on the competence of the personnel performing it, and the
10.1520/D4506-08.
2 suitability of the equipment and facilities used. Agencies that meet the
The boldface numbers in parentheses refer to the list of references appended to
criteria of Practice D3740 are generally considered capable of competent
this standard.
3
and objective testing/sampling/inspection/etc. Users of this standard are
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
cautioned that compliance with Practice D3740 does not in itself assure
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
reliable results. Reliable results depend on many factors; Practice D3740
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. provides a means of evaluating some of those factors.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D4506 − 08
6. Apparatus 6.4.1 Hydraulic Pump,withallnecessaryhoses,connectors,
and fluid, capable of applying the required pressure and
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D4506–02 (Reapproved 2006) Designation:D4506–08
Standard Test Method for
Determining the In Situ Modulus of Deformation of Rock
1
Mass Using a Radial Jacking Test
This standard is issued under the fixed designation D 4506; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method is used to determine the in situ modulus of deformation of rock mass by subjecting a test chamber of
circular cross section to uniformly distributed radial loading; the consequent rock displacements are measured, from which elastic
or deformation moduli may be calculated. The anisotropic deformability of the rock can also be measured and information on
time-dependent deformation may be obtained.
1.2 This test method is based upon the procedures developed by the U.S. Bureau of Reclamation featuring long extensometers
2
(1). . An alternative procedure is also available and is based on a reference bar (2).
1.3 Application of the test results is beyond the scope of this test method, but may be an integral part of some testing programs.
1.4The values stated in inch-pound units are to be regarded as the standard.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
3
2.1 ASTM Standards:
D 653 Terminology Relating to Soil, Rock, and Contained Fluids
D 3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in
Engineering Design and Construction
D 4403 Practice for Extensometers Used in Rock
3. Terminology
3.1 Definitions: See Terminology D 653 for general definitions.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 deformation—the change in the diameter of the excavation in rock (test chamber).
4. Summary of Test Method
4.1 A circular test chamber is excavated and a uniformly distributed pressure is applied to the chamber surfaces by means of
flat jacks positioned on a reaction frame. Rock deformation is measured by extensometers placed in boreholes perpendicular to the
chamber surfaces. Pressure is measured with a standard hydraulic transducer. During the test, the pressure is cycled incrementally
and deformation is read at each increment. The modulus is then calculated. To determine time-dependent behavior, the pressure
is held constant and deformation is observed over time.
5. Significance and Use
5.1 Using this test method, a volume of rock large enough to take into account the influence of discontinuities on the properties
of the rock mass is loaded. The test should be used when values are required which represent the true rock mass properties more
closely than can be obtained through less expensive uniaxial jacking tests or other procedures.
1
This test method is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.12 on Rock Mechanics.
Current edition approved May 1, 2006. Published June 2006. Originally approved in 1985. Last previous edition approved in 2002 as D4506–02.
Current edition approved July 1, 2008. Published July 2008. Originally approved in 1985. Last previous edition approved in 2006 as D 4506 – 02 (2006).
2
The boldface numbers in parentheses refer to the list of references appended to this standard.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D4506–08
NOTE 1—The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the s
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.