Study on design and construction method for the New Tomei–Meishin expressway tunnels

Miura, Katushi; Yagi, Hiroshi; Shiroma, Hiromichi; Takekuni, Kazuya

doi:10.1016/s0886-7798(03)00036-1

Cited by 24 publications

(9 citation statements)

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“…In this section, the final values of the major and minor axes and the ratio of horizontal over vertical stresses k are the same as in the previous section with the end time of excavation being t 1 /T K = 1.0. The time-dependent tunnel inner boundaries, which simulate the real across-section excavation process as center drift advanced method (Miura et al 2003) (e.g., method C shown in Fig. 15), and drilling and blasting method (Tonon 2010) (e.g., methods A, B1 and B2 shown in Fig.…”

Section: Influence Of the Excavation Ratementioning

confidence: 99%

“…Therefore, proper simulation of the whole sequence of excavation is of great importance for the determination of the optimal values of the tunneling parameters to achieve optimal design (Tonon 2010;Sharifzadeh et al 2012). Sequential excavation is a technique becoming increasingly popular for the excavation of tunnels large cross-section in several countries (Tonon 2010;Miura et al 2003). For instance, 200 km of tunnels along the new Tomei and Meishin expressways in Japan, were built via the so-called center drift advanced method.…”

Section: Introductionmentioning

confidence: 99%

“…Also subway tunnels are often featured by elliptical or horse-shoe cross-sections (Hochmuth et al 1987). Moreover, several road tunnels require an elliptical or nearly elliptical cross-section with the longer axis in the horizontal direction to minimize the excavation volume whilst meeting the geometrical constraints required for the construction of the road and related walk-ways (Miura et al 2003). In Japan, elliptical sections are specifically prescribed for mountainous regions (Miura 2003).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analytical Solutions for Tunnels of Elliptical Cross-Section in Rheological Rock Accounting for Sequential Excavation

et al. 2014

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Abstract:Time dependency in tunnel excavation is mainly due to the rheological properties of rock and sequential excavation. In this paper, analytical solutions for deeply buried tunnels with elliptical cross-section excavated in linear viscoelastic media are derived accounting for the process of sequential excavation. For this purpose, an extension of the principle of correspondence to solid media with time varying boundaries is formulated for the first time. An initial anisotropic stress field is assumed. To simulate realistically the process of tunnel excavation, solutions are developed for a time dependent excavation process with the major and minor axes of the elliptical tunnel growing from zero until a final value according to time dependent functions to be specified by the designers.Explicit analytical expressions in integral form are obtained assuming the generalized Kelvin viscoelastic model for the rheology of the rock mass, with Maxwell and Kelvin models solved as particular cases. An extensive parametric analysis is then performed to investigate the effects of various excavation methods and excavation rates. Also the distribution of displacement and stress in space at different times is illustrated. Several dimensionless charts for ease of use of practitioners are provided.

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Section: Influence Of the Excavation Ratementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analytical Solutions for Tunnels of Elliptical Cross-Section in Rheological Rock Accounting for Sequential Excavation

et al. 2014

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“…The whole working face of each tunnel is divided into two parts, first the upper part is headed, and then the lower part: The circled digits in Fig. 8 represent the tunneling sequence of the surrounding rock within the tunnel contour by conventional tunneling method [18][19][20]. The longitudinal profile of the tunnel construction process is shown in Fig.…”

Section: Construction Procedures Of the Ultra-shallow Tunnelmentioning

confidence: 99%

Study on calculation of rock pressure for ultra-shallow tunnel in poor surrounding rock and its tunneling procedure

Zhou

Wang

Ben-tao³

2013

J. Mod. Transport.

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A computational method of rock pressure applied to an ultra-shallow tunnel is presented by key block theory, and its mathematical formula is proposed according to a mechanical tunnel model with super-shallow depth. Theoretical analysis shows that the tunnel is subject to asymmetric rock pressure due to oblique topography. The rock pressure applied to the tunnel crown and sidewall is closely related to the surrounding rock bulk density, tunnel size, depth and angle of oblique ground slope. The rock pressure applied to the tunnel crown is much greater than that to the sidewalls, and the load applied to the left sidewall is also greater than that to the right sidewall. Meanwhile, the safety of the lining for an ultra-shallow tunnel in strata with inclined surface is affected by rock pressure and tunnel support parameters. Steel pipe grouting from ground surface is used to consolidate the unfavorable surrounding rock before tunnel excavation, and the reinforcing scope is proposed according to the analysis of the asymmetric load induced by tunnel excavation in weak rock with inclined ground surface. The tunneling procedure of bench cut method with pipe roof protection is still discussed and carried out in this paper according to the special geological condition. The method and tunneling procedure have been successfully utilized to design and drive a real expressway tunnel. The practice in building the super-shallow tunnel has proved the feasibility of the calculation method and tunneling procedure presented in this paper.

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“…The final permanent support system is commonly a cast-in-place concrete lining, placed over a waterproofing membrane. Tunnel stability, ground displacements induced by tunneling, and the performance of the support system, are some of the issues that must be taken into consideration for the successful design and implementation of a NATM tunnel [1]. The ground movements, induced by tunneling, affect the safety of adjacent underground structures and surface buildings [2].…”

Section: Introductionmentioning

confidence: 99%

A Gene Expression Programming Model for Predicting Tunnel Convergence

et al. 2019

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Underground spaces have become increasingly important in recent decades in metropolises. In this regard, the demand for the use of underground spaces and, consequently, the excavation of these spaces has increased significantly. Excavation of an underground space is accompanied by risks and many uncertainties. Tunnel convergence, as the tendency for reduction of the excavated area due to change in the initial stresses, is frequently observed, in order to monitor the safety of construction and to evaluate the design and performance of the tunnel. This paper presents a model/equation obtained by a gene expression programming (GEP) algorithm, aiming to predict convergence of tunnels excavated in accordance to the New Austrian Tunneling Method (NATM). To obtain this goal, a database was prepared based on experimental datasets, consisting of six input and one output parameter. Namely, tunnel depth, cohesion, frictional angle, unit weight, Poisson’s ratio, and elasticity modulus were considered as model inputs, while the cumulative convergence was utilized as the model’s output. Configurations of the GEP model were determined through the trial-error technique and finally an optimum model is developed and presented. In addition, an equation has been extracted from the proposed GEP model. The comparison of the GEP-derived results with the experimental findings, which are in very good agreement, demonstrates the ability of GEP modeling to estimate the tunnel convergence in a reliable, robust, and practical manner.

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Study on design and construction method for the New Tomei–Meishin expressway tunnels

Cited by 24 publications

References 0 publications

Analytical Solutions for Tunnels of Elliptical Cross-Section in Rheological Rock Accounting for Sequential Excavation

Analytical Solutions for Tunnels of Elliptical Cross-Section in Rheological Rock Accounting for Sequential Excavation

Study on calculation of rock pressure for ultra-shallow tunnel in poor surrounding rock and its tunneling procedure

A Gene Expression Programming Model for Predicting Tunnel Convergence

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