ISRM Suggested Methods of rock stress estimation -- Part 4: Quality control of rock stress estimation

摘要

1. This is Part 4 of four new ISRM-suggested methods (SMs) for rock stress estimation: Part 1: Strategy for rock stress estimation. Part 2: Overcoring methods. Part 3: Hydraulic fracturing and/or hydraulic testing of pre-existing fractures (HTPF) methods. Part 4: Quality control of rock stress estimation. These SMs are published together in a Rock Stress Estimation Special Issue of the International Journal of Rock Mechanics and Mining Sciences, 2003, Vol. 40, Issue 7-8, together with a suite of supporting contributions describing various aspects of rock stress estimation. It is strongly recommended that the new SMs be studied in association with the supporting contributions in the 2003 Special Issue-because these contributions provide a wealth of further detail and measurement case examples. 2. The Client requires information on the rock stress to be traceable, with an accuracy in conformity with his/ her specification. This can only be achieved if an adequate quality control system is in place and operated successfully throughout the duration of the work, from original conception to presentation of the results. Accordingly, this Part 4 SM provides guidance on the key issues related to implementing an adequate Quality Control system. Following an overview table of the Technical Auditing issues for stress measurements, a series of detailed tables is presented covering 26 issues under the 10 audit Subject Areas of stress measurement objective and background, stress measurement method, contractual aspects, establishing Quality Assurance procedures, quality aspects for establishing the viability of stress measurements at a given location/depth, measurement procedures, stress data reduction and interpretation, continuous evaluation process, validation and presentation, and Technical Auditing conclusions.