Browse > Article
http://dx.doi.org/10.14481/jkges.2011.12.11.5

The Characteristics of Stress and Displacement due to the Diagonal Parallel Tunnel Excavation  

Kim, Youngsu (경북대학교 공과대학 건축토목공학부)
Pack, Songja (한국건선안전관리공단)
Publication Information
Journal of the Korean GEO-environmental Society / v.12, no.11, 2011 , pp. 39-49 More about this Journal
Abstract
In this paper it was focused on the characteristics of displacement and stress due to the construction of diagonal twin tunnel. In this research, the characteristics have been analyzed with the presumption that the tunnel's diameter (D) is 13m and the ground was formed by weathered rock. In analysis, the width of pillar is 2.0D, 2.5D, 3.0D, the height of soil cover is 3D, 4D, 5D, and the installation angle of diagonal twin tunnel has been changed into $15^{\circ}$, $30^{\circ}$, $45^{\circ}$. And the program used in this analysis is FLAC which is widely used in solution problems of ground engineering in order to gain and analyze occurring shotcrete and rockbolt stress and nearby ground displacement according to pillar width, the height of soil cover and installation angle of diagonal twin tunnel. As a result, in the weathered rock grounds, when the width of pillar is more than 2.0D, the height of soil cover is over 5.0D, and the installation angle of diagonal twin tunnel is lower, they lessen effects on the ground and favorable on the stability of tunnel.
Keywords
Diagonal; Parallel tunnel; Characteristics of stress;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 김학문(1997), 쌍굴터널 굴진에 따른 주변지반의 거동과 간섭 효과, 터널과 지하공간, Vol. 7, No. 2, pp. 137-142.
2 박지용(2004), 병설터널 굴착에 따른 주변지반의 변형거동에 관한 연구, 석사학위논문, 청주대학교, pp. 28-52.
3 장부식(2006), 근접 병설터널 pillar의 거동특성 평가에 관한 연구, 박사학위논문, 홍익대학교, pp. 17-27.
4 정재우(1996), 쌍굴터널 굴진에 따른 주변지반의 거동에 관한 연구, 석사학위논문, 단국대학교, pp. 3-16.
5 Adachi, T., Kimura M., Osada, H.(1993), Interaction between Multitunnels under Construction, In: Eleventh Southeast Asian Geotechnical Conference, Singapore, pp. 51-60.
6 Addenbrooke, T. I. and Potts, D. M. (1996), Twin Tunnel Construction, Ground Mvements and Lining Behavior, Geotechnical Aspects of Underground Construction in Soft Ground, Balkema, pp. 441-446.
7 Dhar, B.B., Ratan, S., Sharma, D.K., Rao, P. M.(1981), Model Study of Fracture around Underground Excavations, In: Proceedings of the International Symposium on Weak Rock, pp. 267-271
8 Ng, C.W.W., Lee, K.M., Tang, D.K.W. (2004), Three-demensional Numerical Investigations of the New Austrian Tunnelling Method (NATM) Twin Tunnel Interactions, Canadian Geotechnical Journal, Vol. 41, No. 3, pp. 523-539.   DOI   ScienceOn
9 Wu, C.S., Li, J.X., Chen, X., Xu, Z.P.( 2004), Blasting in Twin Tunnels with Small Spacing and its Vibration Control, Tunnelling and Underground Space Technology, Vol. 19, p. 518.   DOI   ScienceOn
10 김종우, 박지용(2004), 쌍굴터널 주변지반의 변형거동에 관한 모형실험 연구, 터널과 지하공간, Vol. 14, No. 5, pp. 381-390.