1-3 of 3
Keywords: tunnel axis
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-566
... geomechanics drilling rate drilling velocity tunnel axis stress condition ABSTRACT: In the Nathpa-Jhakri Hydroelectric Project - under construction since 1993 - unusual stress conditions show a severe influence on the drilling and blasting conditions. It is believed, that the in-situ stress field...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-581
... the stability of the tunnels. CURRENT PRACTICE Broms and Bennermark (1967) introduced the concept of stability ratio, N, which can be defined as; N z s = + s T u 0 (1) where is unit weight of the soil, su is undrained shear strength of the soil at tunnel axis level, s is surface surcharge pressure, T...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-168
... ZONTAL I Nell NOilETER introduce thermal stress in the ground if any. l3days were required for thawing !Stage. Measurement of ground settlement 3 systems of measuring settlement were installed around the test tunnel. 1) Horizontal inclinometer 3 inclined holes along tunnel axis above the crown were...

Product(s) added to cart

Close Modal