Consideration on design procedure of room-and-pillar underground structure part I: parametric study

In this study, in order to suggest the design method for supports in the room-and-pillar underground structure,the case study was carried out. In the case study, shape of rock pillar and room was mainly considered. From the analysis,a displacement at the roof, the maximum principle stress and plastic state were examined. To optimize variables in the casestudy, cases from the Seoul metro station were analyzed, then a target depth of the underground structure and groundconditions were determined. And the height of rock pillar and room were chosen from the assumed purpose of undergroundspace, i.e. living/office and warehouse. Total cases of analysis was 180 cases including 3 types of ground condition, 5 typesof rock pillar and 6 types of roof span. It is expected that results from analysis can be used to determine the installation ofsupport in room-and-pillar underground structure with stability, utilization efficiency of underground space andapplicability of vehicles.

keywords: Room and pillar method, Support, Numerical analysis, Design, Stability, Parametric study, 주방식 공법, 지보재, 수치해석, 설계, 안정, 매개변수 연구

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Article Contents

Vol.16 No.5

Consideration on design procedure of room-and-pillar underground structure part I: parametric study

Abstract

Reference

(사)한국터널지하공간학회