IS 17446 : 2020 Observational Method for Tunnelling in Rock Masses-Guidelines

ICS 093.20 CED 48

New Standard from Last Update.

1 SCOPE

1.1 This standard covers the guidelines for monitoring and timely action based on instrumental observations for both small and large underground openings in rock masses.

1.2 Measurements for the in-situ stresses have not been dealt in this standard.

1.3 This standard does not cover conventional tunnelling methods in rock masses, which are covered in IS 15026 : 2002 ‘Guidelines for tunnelling method in rock masses’.