A remedy measure for large cavities of an existing tunnel

enlarging an existing tunnel under operation, unexpected excessive overbreaks and large cavities around the tunnel were found. It was an issue that they might influence the stability of the new tunnel. The overbreaks and cavities are assumed that they were attributed to excessive blasting under the condition of insufficient ground investigation. To enlarge the existing tunnel safely, therefore, a remedy measure for the overbreaks and cavities is suggested.

keywords: 과대여굴, 대규모 공동, 여굴 처리 대책, Excessive overbreaks, large cavities, remedy measure for the overbreaks, Excessive overbreaks, large cavities, remedy measure for the overbreaks

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Article Contents

Vol.9 No.3

A remedy measure for large cavities of an existing tunnel

Abstract

Reference

(사)한국터널지하공간학회