ASTM-D4623 2008
$44.96
D4623-08 Standard Test Method for Determination of In Situ Stress in Rock Mass by Overcoring Method—USBM Borehole Deformation Gauge
| Published By | Publication Date | Number of Pages |
| ASTM | 2008 | 14 |
ASTM D4623-08
Historical Standard: Standard Test Method for Determination of In Situ Stress in Rock Mass by Overcoring Method—USBM Borehole Deformation Gauge
ASTM D4623
Scope
1.1 This test method covers the determination of the ambient local stresses in a rock mass and the equipment required to perform in situ stress tests using a three-component borehole deformation gauge (BDG). The test procedure and method of data reduction are described, including the theoretical basis and assumptions involved in the calculations. A section is included on troubleshooting equipment malfunctions.
Note 1—The gauge used in this test method is commonly referred to as a USBM gauge (U.S. Bureau of Mines three-component borehole deformation gauge).
1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
Keywords
borehole; core; deformation; drilling; gauge; in situ; measurements; moduli; overcoring; rock; stress; Borehole drilling; Deformation–rock; Equipment malfunction; Field testing–rock; Fracture testing–rock; Gages; Overcore; Poisson’s ratio; Pressure testing–rock; Rock drilling/coring/investigation; Stress–rock; Young’s modulus
ICS Code
ICS Number Code 93.020 (Earth works. Excavations. Foundation construction. Underground works)
DOI: 10.1520/D4623-08
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Scope Referenced Documents Terminology Summary of Test Method Significance and Use |
| 2 | Apparatus FIG. 1 |
| 3 | Calibration and Standardization FIG. 2 |
| 4 | FIG. 3 FIG. 4 |
| 5 | Procedure FIG. 5 |
| 7 | FIG. 6 |
| 8 | FIG. 7 |
| 9 | FIG. 8 FIG. 9 |
| 10 | Calculation |
| 11 | Report Precision and Bias Keywords |
| 12 | A1. DRILLING APPARATUS A1.1 Drill A1.2 EWX Single-Tube Core Barrels A1.3 EX Diamond Bit A1.4 Reamer A1.5 EW Drill Rods A1.6 Drill Rod or Casing A1.7 Water Swivel A1.8 Starter Barrel A1.9 EW Core Barrel FIG. A1.1 FIG. A1.2 FIG. A1.3 |
| 13 | A1.10 Diamond Drill A1.11 Stabilizers A1.12 Core Breaker A1.13 Core Shovel A1.14 Core Puller A1.15 Water Pump and Hose X1. SAMPLE CALIBRATION FIG. A1.4 |
| 14 | TABLE X1.1 |
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