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Keywords: tunnel
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Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-024
...1 INTRODUCTION Rock mass classification has evolved to satisfy sev- eral often contradictory goals: 1. A quick easily used field tool to assess tunnel stability and support requirements. 2. An accurate assessment of rock mass properties for underground tunnel design, open stope de- sign as well...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-054
...1 INTRODUCTION Pressure tunnels are among the most complicated of tunnels, both in design and construction. Therefore, any shortcoming in the design and construction of these tunnels may result in great damage. The Namroud dam is a clay-core embankment dam, which is currently under construction...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-145
... ABSTRACT ABSTRACT: The backdrop for this research paper is the tunnelling that is currently nearing completion in the Epirus and Western Macedonia regions of Northern Greece, as part of the Egnatia Odos Highway construction. Highly deformed and altered sediments and low grade metamorphic...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-146
...1 INTRODUCTION Tunneling beneath the groundwater table causes changes in the state of stress and the pore water pressure regime. In such tunneling problems, there are three important issues that have to be addressed during design and construction stages including con- struction, stability...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-141
... ABSTRACT ABSTRACT: The 57-km long (37 miles) Gotthard Base Tunnel, under construction since 1997, will connect the North and South sides of the Swiss Alps, and thus will be a main transportation axis for Europe, being the longest twin railway tunnel in the world. Its construction has been...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-192
... interface with rock mass. A new strategy is recommended to improve practice for design of underground construction based on automated design system TUNNEL and simple measurement of contour displacements during construction in the tunnel or in the tunnel prototype. 1 INTRODUCTION Most of the well known...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-127
... in 1892 (OPG 2006). In 1925 the largest hydro power station (of that time), com- monly know as the Sir Adam Beck I, was brought into service and in 1954 a second power station, Sir Adam Beck II (OPG 2006) and two tunnels were constructed. Recent upgrades at the Sir Adam Beck complex have increased...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-142
... ABSTRACT ABSTRACT: Absolute displacement monitoring has become common practice on many tunnel sites. Those data in combination with the information on geological and boundary conditions have a tremendous potential to enhance the insight into mechanical processes around the tunnel...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-128
... slopes at Jinping I, ground support in the deeplyseated tunnels at Jinping II, and the design of a large size cavern at Baihetan in poor ground conditions, are discussed in this paper. 1 INTRODUCTION China has been putting efforts into the development of hydropower stations in the past several years...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-143
... measurements. The authors analyzed in detail approximately 500 convergence curves observed in six motorway tunnel projects, which were driven through shale and sandstone, granitic rock and slate formations. Also, they investigated the relationship between the width of loosening zone, the allowable limit...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-129
... ABSTRACT ABSTRACT: A 14.4 m diameter water conveyance tunnel is currently being excavated by TBM through a highly saline and highly stressed bedrock regime near Niagara Falls, Canada. Time-dependent deformations occur in certain rock units when exposed to fresh water and upon release...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-144
..., but the tunnels no longer fulfilled requirements for traffic space and safety. During winter the road was covered with ice from inflowing water, and the tunnel lining had deteriorated due to freeze-thaw effects. The true ground conditions did not reveal themselves prior to the reconstruction of the tunnels...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-124
... include dam foundations, underground powerhouses, landslides, power and diversion tunnels, open cut excavations, canals, and foundations for powerhouses, pen- stocks, and transmission towers. Rock engineering processes include site characterization, monitoring, mod- eling and interpretation, design...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-139
... in preparation of the observational approach. Appropriate preparation includes a thorough investigation and ground characterization as a basis for selection of the alignment, assessment of possible failure modes, and assignment of appropriate construction methods to each section of the tunnel. With a serious...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-060
... ABSTRACT ABSTRACT: A noncircular tunnel was excavated in massive granite. The tunnel geometry and orientation relative to the stress field had been selected to minimize the potential for the development of an excavationinduced damage zone. The extent and characteristics of this excavation...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-055
... construction, such as tunnels. It is well known that fractures are main paths for fluid flow in rock masses, thus fracture properties such as normal stiffness, shear stiffness, aperture, friction angle, dilation angle etc, could affect the in- flow and hydraulic conductivity. Variation in hy- draulic...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-031
... standard for international tunnelling and is becoming popular in slope applications. This system is based on the principle that structure within a rockmass (joints, fractures, joint surface alteration and degradation) acts to reduce both the cohesion and frictional properties of the rockmass. Evidence...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-011
... scanner Imager 5003 of Zoller+Froehlich was employed to scan the surfaces of a tunnel located in the Mont Terri Rock Laboratory (Switzerland). The reliability of the approach was assessed by comparing measurements provided by the laser scanner with those obtained through the surveying of targets using...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-023
...1 INTRODUCTION Rock mass classification has come to be associated with the need to select a rock mass class on the basis of prior classification or rating of various rock mass parameters. Most frequently, classification is used in association with tunnel support, and also as a basis for payment...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st Canada - U.S. Rock Mechanics Symposium, May 27–31, 2007
Paper Number: ARMA-07-053
... ABSTRACT ABSTRACT: Spiling bolts are often used as a pre-support measure for tunnelling in an extremely weak rock mass. However, this application is based mainly on experience without a clear description of how spiling bolts work. This may be the first time spiling bolts have been modelled...