高速公路礫石隧道設計之探討

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Abstract The design and construction of gravel tunnel and rock tunnel are different. Rock classifications，such as CSIR-RMR method and Barton-Q system，are not suitable for the gravel tunnel. Because of the difficulties in sampling in site investigation and determining grain size，the laboratory tests are not so convenient to carry out for obtaining the ground parameters. Although some gravel tunnels have been finished in the recent year，the available experience is still inadequate. In the first case of highway gravel tunnel in Taiwan，the geological and mechanical characteristics are fully studied prior to tunnel design. The design methodology is introduced，in which the characteristics mentioned above are considered. The numerical analysis on the support system is then carried out.

Key words： tunneling engineering gravel tunnel numerical analysis rock classification

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https://rockmech.whrsm.ac.cn/EN/Y2004/V23/IS2/4833