Tunnel stability
Revisiting Broms and Bennermarks’ original stability number for tunnel headings
... shearing, stability results are independent of loading directions, and the combination of surcharge, self-weight and internal supporting pressures can produce failure either in collapse or blowout in tunnel ...
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Stability analysis of shallow undrained tunnel heading using finite element limit analysis
... slope stability analysis and is growing in popularity and acceptance for tunnel stability ...the stability of shallow tunnels in a saturated soil medium and validated their initial results by ...
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Centrifuge modelling of tunnelling with forepoling
... Geotechnical centrifuge modelling provides a means by which geotechnical events and processes can be better understood. In particular, the technique has proved invaluable when investigating collapse mechanisms in small ...
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Effects of statistical distribution of joint trace length on the stability of tunnel excavated in jointed rock mass
... the stability of support of rock joint ...of tunnel in jointed rock mass using the scaled model ...the stability of a ...the stability of a tunnel excavated in the rock ...on ...
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Multi-factorial Analysis on Vault Stability of an Unsymmetrically Loaded Tunnel Using Response Surface Method
... in tunnel construction, the unsymmetrical loading is often inevitable especially at tunnel entrances, mountain sides and valley ...the stability of tunnel vault which is of great ...and ...
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The Effect of Groundwater Seepage on Stability of Tunnel by Using Strength Reduction Method Considering Fluid Solid Coupling
... the tunnel surrounding rock is used as the instability criterion of the tunnel, and the effects of different working conditions and different water levels on the safety factor of the tunnel are ...of ...
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Analysis of Face Stability of Circular Tunnel in Purely Cohesive Soils Driven by Shield
... the stability of an idealized heading in undrained soil conditions is not ...the tunnel stability and arching effects that develop during tunnelling in soft clayey soil and proposed the boundaries of ...
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A study on the reinforcing capabilities of Forepoling Umbrella System in urban tunnelling
... the tunnel support pressure was reduced to ...the tunnel lining at the end of all the ...the tunnel lin- ...shallow tunnel tests, the overburden stress is smaller and can be supported by the ...
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Probabilistic stability analysis of crushed fault zone in the Zaker-Sorkhedizaj tunnel, NW Iran
... Probabilistic stability analysis of tunnel deformations in the crushed rock masses were accomplished using a two-dimensional hybrid element model, called Phase2 Finite Element Program (Rocscience, ...a ...
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The effect of a forepole umbrella system on the stability of a tunnel face in clay
... ABSTRACT: A new series of three-dimensional centrifuge model tests using soft clay has been conducted using the geotechnical cen- trifuge facility at City University London. These tests aim to quantify the reinforcing ...
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Twin-tunnelling-induced ground movements in clay
... by tunnel boring machine, which allows close control of the tunnelling process; however, any movements have the potential to cause damage to existing structures at, and below, the ground ...individual ...
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Alternative Software for Evaluating Preliminary Rock Stability of Tunnel Using Rock Mass Rating (RMR) and Rock Mass Quality (Q) on Android Smartphone
... mass stability and suggesting support method for tunnel using rock mass rating and rock mass ...mass stability. However, long-term stability investigation is important, the user should use ...
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3D Rapid Modeling and Key Technology Analysis of Mountain Tunnel
... 3D MAX provides powerful modeling tools such as standard basic body, extended basic body, composite object, basic geometric figure, editable spline line, editable polygon, facet modeling, editable mesh, NURBS modeling, ...
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Non linear seismic performance of smart tunnel
... 2 Table 1 summarizes the tunnelling activities during the last decade (1995- 2005) forvarious rock formations in Peninsular Malaysia. It can be seen that most of the tunnels uses the drill and blast method. The ...
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Tunnel design and construction process in difficult ground conditions with Analysis of Controlled Deformations (ADECO) approach; a Case Study
... Crossing this collapsed area was successfully accomplished in a shorter period compared to the previous collapse. Excavation of the tunnel up to a distance of 150 m from the inlet was followed using the same ...
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Review on Protocols of Virtual Private Network
... A consortium, consisting of Ascend Communications, 3Com, ECI Telematics, U.S. Robotics, and Microsoft, developed the PPTP specification for the tunneling of data across the Internet.The PPTP protocol [4] is built on the ...
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Research on Natural Gas Pipeline Leakage and Ventilation Scheme in Tunnel
... on tunnel ventilation, the focus of the research is mainly on the tunnels in highway and railway, and the research on the tunnel of oil and gas pipeline is ...However, tunnel of oil and gas pipeline ...
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Development of the Soekarno–Hatta International Airport Rail Link Project Using the Value Engineering Method: Creating Value for Money
... The SHIARL route is planned to be 38.5 kilometers, using the inter-city toll road to connect Halim Airport in eastern Jakarta with Soekarno–Hatta Airport. This route is divided into three sections: the first section is ...
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Improving and Standardization in Diagnosis of Pancreatic Cancer
... carpal tunnel release compared to any other surgical intervention for the treatment of ...Carpal Tunnel Release(OCTR) and Endoscopic Carpal Tunnel Release(ECTR) for carpal tunnel syndrome are ...
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Safety Study on Blasting Vibration of Down Tunnel in Neighboring Villages
... of tunnel excavation, but blasting vibration damage will occur in the construction ...downlink tunnel, the blasting vibration of the upper part of a tunnel in yunnan was monitored The results show ...
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