A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Economical Benefits of Rock Joint Testing
Despite the common belief that joint surface properties control the behavior of the rock mass and ultimately the excavated structure, quantitative joint properties are typically unknown on most rock tunnel designs. To quantify joint properties in terms of cohesion, waviness, roughness, friction angle, degree of weathering, in filling, healed material and other mechanical parameters requires joint testing, which is typically a costly proposition. But sometimes this investment in testing leads to significant cost savings. This paper will begin to review joint properties and their impact on tunnel and shaft stability and present a sensitivity analysis performed by using Unwedge to analyze the effects of each input on the required amount of support to establish a minimum target safety factor. Factors that will be analyzed include: tunnel size, tunnel shape and trend, ground support methods and cost, and joint properties. Sensitivity curves will offer a starting point on discussions for further study.
Economical Benefits of Rock Joint Testing
Despite the common belief that joint surface properties control the behavior of the rock mass and ultimately the excavated structure, quantitative joint properties are typically unknown on most rock tunnel designs. To quantify joint properties in terms of cohesion, waviness, roughness, friction angle, degree of weathering, in filling, healed material and other mechanical parameters requires joint testing, which is typically a costly proposition. But sometimes this investment in testing leads to significant cost savings. This paper will begin to review joint properties and their impact on tunnel and shaft stability and present a sensitivity analysis performed by using Unwedge to analyze the effects of each input on the required amount of support to establish a minimum target safety factor. Factors that will be analyzed include: tunnel size, tunnel shape and trend, ground support methods and cost, and joint properties. Sensitivity curves will offer a starting point on discussions for further study.
Economical Benefits of Rock Joint Testing
Hawks, Andre (author) / Asbury, Brian (author) / Rogers, J David (author) / Rostami, Jamal (author)
GeoCongress 2012 ; 2012 ; Oakland, California, United States
GeoCongress 2012 ; 3305-3313
2012-03-29
Conference paper
Electronic Resource
English
Economical Benefits of Rock Joint Testing
| British Library Conference Proceedings | 2012
Economical cylinders offer variety of benefits
British Library Online Contents | 1995
British Library Online Contents | 2001
Economical Rock Groynes-Reducing Lifecycle Costs
| British Library Conference Proceedings | 2004
Economical Rock Groynes - Reducing Lifecycle Costs
| ASCE | 2004