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To analyze the unsteady three-dimensional flow in the subway tunnel caused by the passage of a train, both experimental and computational studies have been conducted. The experimental analysis of train-induced unsteady flow is conducted on a 1/20 scale model tunnel and the pressure and air...
A control scheme for highway tunnels is designed based on a static model of the highway tunnel. The controller is designed to keep the exhaust levels inside the tunnel below given limits. The control is then simulated on a dynamical model of a highway tunnel.
An underground power cavern situated in bedded sandstone rocks was evaluated using the finite element method. The rock formation had a set of joints vertically with an opening of less than 0.1 mm. A “bedded model” was used to analyze the stability of the cavern excavation. The calculations...
This paper examines the feasibility of employing the new generation fibre optic and piezoelectric sensor systems for comprehensive monitoring of rocks, covering load history monitoring/retrieval as well as damage assessment. A detailed experimental study was conducted on the Bukit Timah granite...
Based on the axial symmetrical plane strain assumption, given that the rock mass satisfies the Mohr–Coulomb failure criterion and exhibits strain-softening behavior, this paper represents two categories of theoretical methods for ground reaction analyses in conventional tunnelling excavation....
The Himalayan region possesses enormous potential for hydropower development. However, there exists great challenge for the successful underground excavation due to complex geological set up of the region. It is generally accepted that the cost and time are of main concerns in any tunnelling...
The hyperstatic reaction method is particularly suitable for the dimensioning of support structures. This method simulates the interaction between the support and rock surrounding the tunnel through independent “Winkler” type springs. It requires the definition of the active loads that are...
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