1.1 This practice outlines the field procedure for determining the in situ transmissive capacity of discontinuities encountered in a discrete test interval of a rock mass using constant head injection. 1.2 This practice is limited to the testing of rock masses with a permeability greater than 10-5 cm/s and does not consider the intrinsic transmissivity due to pores in the crystalline rock matrix. 1.3 This practice also describes a procedure for characterizing encountered discontinuities based on their response to pressurized fluid injection. 1.4 The transmissivity values stated in Lugeons are to be regarded as standard. Any permeability values provided in parentheses are approximate mathematical conversions which are provided for reference only and are intended to be construed to represent the average permeability of a tested rock mass interval. 1.5 This standard does not purport to address all of the safety problems, 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. 1.6 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a projects many unique aspects. The word Standard in the title of this document means only that the document has been approved through the ASTM consensus process.
Keywordsdrilling; coring; boring; borehole; stage; packer; pneumatic; grouting; exploration; investigation; geotechnical; environmental; conductivity; viscosity; fracture; formation; Newtonian; Houlsby; contaminant; groundwater; amenability;
The procedures described in this practice have been discussed in many technical papers, books, and manuals, including the recently-released revised version of the US Army Corps Grouting Technology Manual, but have not been presented in an official standard in the United States. An official ASTM Standard is more easily accessible to users of a larger variety of industries. This practice will present procedures for performing water pressure testing in isolated borehole intervals in bedrock, for characterizing discontinuities encountered in each interval based on the water pressure test data, and for calculating transmissivity, in Lugeons, using data collected from each tested borehole interval. This standard is intended to aid serve as a reference for owners, operators, regulators, consultants, and contractors for use on projects related to seepage control, dewatering, rock grouting, and other scope elements related to hydraulic conductivity of high-permeability rock.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development