scope in ground improvement techniques
Nicholson Construction Company
12 McClane Street
Cuddy, PA 15031
Telephone: 412-221-4500
Facsimile: 412-221-3127
Soil Improvement Technologies for Tunnelling:
Selected Case Histories by G. Pellegrino
Nicholson Construction Company, Cuddy, Pennsylvania
Presented at:
ASCE Met Section Spring 1999 Geotechnical Seminar
State-of-the-Art Technology in Earth and Rock Tunnelling
New York, NY
May 26-27, 1999
99-02-128
SOIL IMPROVEMENT TECHNOLOGIES FOR TUNNELLING:
SELECTED CASE HISTORIES
Guido Pellegrino
Nicholson Construction Company
ABSTRACT
Soil improvement technologies have been widely employed over the recent decades to overcome tunnelling problems in difficult grounds, their range of application growing proportionally to the technological development. The constant advancement in the different mechanical (flexible and more powerful equipment) and electronic (enhanced reliability and direct quality control) aspects of these technologies, fostered the confidence of engineers and tunnellers and, ultimately, allowed the entire tunnel industry to approach complex excavations in a safe and cost effective fashion.
This paper outlines the main features of commercially available soil improvement techniques, with particular emphasis on permeation grouting and jet grouting. These two technologies, developed concurrently in Europe and Japan, and there customarily adopted in the design of underground structures, have known extensive and extreme applications worldwide in recent years. Case histories of soil improvement techniques, as they apply to tunnelling, are also rendered. 1.
BACKGROUND
Grouting technologies for improving the mechanical and hydraulic conductivity properties of soils have been used for decades in diverse civil engineering applications. The first reported applications in the underground industry are mainly related to groundwater control. Tunnellers have quickly perceived the tremendous potential
12 McClane Street
Cuddy, PA 15031
Telephone: 412-221-4500
Facsimile: 412-221-3127
Soil Improvement Technologies for Tunnelling:
Selected Case Histories by G. Pellegrino
Nicholson Construction Company, Cuddy, Pennsylvania
Presented at:
ASCE Met Section Spring 1999 Geotechnical Seminar
State-of-the-Art Technology in Earth and Rock Tunnelling
New York, NY
May 26-27, 1999
99-02-128
SOIL IMPROVEMENT TECHNOLOGIES FOR TUNNELLING:
SELECTED CASE HISTORIES
Guido Pellegrino
Nicholson Construction Company
ABSTRACT
Soil improvement technologies have been widely employed over the recent decades to overcome tunnelling problems in difficult grounds, their range of application growing proportionally to the technological development. The constant advancement in the different mechanical (flexible and more powerful equipment) and electronic (enhanced reliability and direct quality control) aspects of these technologies, fostered the confidence of engineers and tunnellers and, ultimately, allowed the entire tunnel industry to approach complex excavations in a safe and cost effective fashion.
This paper outlines the main features of commercially available soil improvement techniques, with particular emphasis on permeation grouting and jet grouting. These two technologies, developed concurrently in Europe and Japan, and there customarily adopted in the design of underground structures, have known extensive and extreme applications worldwide in recent years. Case histories of soil improvement techniques, as they apply to tunnelling, are also rendered. 1.
BACKGROUND
Grouting technologies for improving the mechanical and hydraulic conductivity properties of soils have been used for decades in diverse civil engineering applications. The first reported applications in the underground industry are mainly related to groundwater control. Tunnellers have quickly perceived the tremendous potential
References: Bruce, DA, Pellegrino, G, 1996. Jet grouting for the solution of tunnelling problems in soft De Paoli, B, Bosco, B, Granata, R, Bruce, DA, 1992a De Paoli, B, Bosco, B, Granata, R, Bruce, DA, 1992b Fang, YS, Yu, FJ, 1998. Jameson, R, Pellegrino, G, Shea, M, 1998. Lambrechts, JR, Roy, PA, 1997. Deep SoilCement Mixing for Tunnel Support at Boston’s I-93NB/I-90 Interchange, in Ground Manassero, V, 1993. Different Techniques for Soil Improvement and Underpinning, in Mongilardi, E, Tornaghi, R, 1986. Pellegrino, G, Adams, DN, 1996. The use of jet grouting to improve soft clays for open Pellegrino, G, 1999. Grouting Technologies for Soft Ground Tunnelling: Recent Roberti, P, Ziller, M, 1993. Due casi di consolidamento