Showing papers in "Tunnelling and Underground Space Technology in 2001"

TL;DR: A summary of the current state of seismic analysis and design for underground structures can be found in this paper, where the authors discuss special design issues, including the design of tunnel segment joints and joints between tunnels and portal structures.

TL;DR: In this paper, a systematic assessment of damage in the mountain tunnels in Taiwan after the Chi-Chi earthquake was carried out and the results showed that the degree of damage is associated with the geological condition and structural arrangement of the tunnel.

TL;DR: Wang et al. as discussed by the authors investigated the property of strain energy stored in rocks by experiment and of which distributed around the mining pits of Linglong gold mine in China by using three-dimensional numerical modeling.

TL;DR: In this paper, three methods of in situ deformation modulus (Em) measurements of rock masses have been described, analysed and compared, and it has been pointed out that the damage from blasting of the test adit reduces the magnitude of test results with a factor between 2 and 4.

TL;DR: In this article, a large excavation of approximately 140 m wide, 200 m long and 15 m deep was made close to two Mass Rapid Transit (MRT) tunnels of 6 m diameter with invert depth of 15-27 m.

TL;DR: In this article, a section of tunnel in the Panchiao Line was damaged as a result of adjacent excavation, cracks appeared in reinforced concrete segments, the concrete slab on the invert was displaced and became detached from the segments.

TL;DR: In this article, the effect of seepage forces on the tunnel face stability was studied for the case of shallow drainage-type tunnels and these results were compared with the lining stresses developed for waterproof type tunnels, and reasonable design concepts applicable to the design of tunnel lining and to the evaluation of the support pressure required for maintaining the stability of tunnel face were suggested.

TL;DR: A fire occurred in the Tauern Tunnel, Austria on 29 May 1999 and caused severe casualties and damage as discussed by the authors, with a particular emphasis on the additional safety equipment required in the tunnel.

TL;DR: In this article, the authors illustrate the range of conditions that can result from the presence of tunnels in, and the activity of driving tunnels through, competent hard rock under conditions of very high rock pressure.

TL;DR: In this paper, the feasibility and efficiency of rotary-percussive drilling assisted by waterjets in very hard rocks was investigated by means of a drop hammer and linear cutting-impact table.

TL;DR: In this paper, the conjugate gradient method was adopted for the optimization procedure and the gap parameter model was utilized to evaluate the ground movement, and the results of back-analysis using the monitoring data of the Taipei Rapid Transit System, the angle of the influence zone of ground settlement is approximately 45° for tunneling in clayey soils, and that for sandy layers ranges from 30 to 50°.

TL;DR: In this paper, a three-dimensional statistical joint modeling technique was used to analyze the stability of rock blocks around a tunnel, where the joint diameter distribution was estimated by using the window sampling method recently developed by Song and Lee.

TL;DR: In this article, the authors present a case study on the collapse caused by sudden groundwater ingression in the Pinglin pilot tunnel, and the treatments developed for the adverse ground conditions encountered.

TL;DR: In this article, a section of completed shield tunnel of the Panchiao Line of the Taipei Mass Rapid Transit (TRTS) was deformed and displaced due to an adjacent excavation.

TL;DR: In this paper, a theoretical method predicting the development and progress of plastic zones around tunnels in soft rocks and determining the loosening pressure which has to be taken by rock bolts or linings is presented.

TL;DR: In this paper, the authors examine human factors engineering in multi-purpose utility tunnels and show human factors to be critical design parameters in the design and construction of 'visitable' utility tunnels.

TL;DR: A compilation of settlement data and related construction methods for various immersed tunnels taken from papers previously published for either specific projects or on the subject in general.

TL;DR: In this article, an analytical solution for an infinite elastic medium is presented for the problem of subsidence due to multi-tunnelling activities in an infinite or semi-infinite elastic medium.

TL;DR: In this article, an anti-liquefaction measure for shield tunneling by using secondary injection grouting was discussed to eliminate the flow of liquefied soils and reduce the liquefaction-induced settlement.

TL;DR: In this article, the authors present a new technique to predict forces and deformations of pipes installed underground by horizontal directional drilling (HDD), which consists of several models each describing different aspects of mechanics of HDD.

TL;DR: In this article, the authors provide an overview of tunnel settlement experience that may be of help to future tunnel designers in more fully understanding this phenomenon when developing their projects and describe a series of immersed tunnel settlement case histories.

TL;DR: In this article, an investigation was performed to find and describe a rock volume suitable for a grouting field test at the Aspo Hard Rock Laboratory, Sweden, and the results of the study were used to calculate a probability of conductive fractures for analyses of data from individual boreholes.

TL;DR: In this paper, a polyester-based polymer concrete coating had a density of 1.75 g/cm 3 (109 lb/ft 3 ) and hardness in the range 38-45 (Barcol hardness).

TL;DR: In this article, the strut monitoring results were compared with the apparent earth pressure envelopes recommended by Peck, and it was concluded that the measured earth pressures relate reasonably well to the expected earth pressure envelope.

TL;DR: In this paper, a vehicle fire occurred in a cross-harbour tunnel in Hong Kong in May 2000, but the traffic was blocked for several hours, leading to huge economic losses.

TL;DR: A considerable amount of tunnelling work has been going on in India for hydroelectric, irrigation, roads and railways projects as mentioned in this paper, and most of these projects are located away from urban areas.

TL;DR: In this paper, the authors present a guideline to the processing of durability data and a compilation of permanent shotcrete linings, including shotcrete object exposure situation and shotcrete method and mix design.

TL;DR: This approximate reasoning process involves development of a series of techniques to handle uncertainties associated with three types of information that are available in the location of underground utilities, in addition to a ‘no information’ situation.