Case study of performance assessment of overlapping shield tunnels with a small curve radius

Abstract

	•A project of twin overlapping shield tunnels with a small curve radius is introduced.
	•Protective measures of soil grouting and H‐shaped steel supports are proposed.
	•A 3D model in view of overcutting soils, grouting, and steel supports is established.
	•The performance of the overlapping shield tunnel with a small curve radius is evaluated.

Keywords

field monitoring / numerical simulation / overlapping shields / small curve radius / steel support stress / uplift of tunnel lining

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RIGHTS & PERMISSIONS

2023 The Authors. Deep Underground Science and Engineering published by John Wiley & Sons Australia, Ltd on behalf of China University of Mining and Technology.