Cause investigation and verification of lining cracking of bifurcation tunnel at Huizhou Pumped Storage Power Station

doi:10.1016/j.tust.2015.10.030

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Cause investigation and verification of lining cracking of bifurcation tunnel at Huizhou Pumped Storage Power Station
	Xiao, Ming 2; Bian, Kang 1; Liu, Jian 1; Liu, Zhenping 1
刊名	TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
	2016
卷号	54 页码:123-134
关键词	Lining cracking Bifurcation tunnel Insufficient thickness Numerical simulation Cause investigation
ISSN号	0886-7798
DOI	10.1016/j.tust.2015.10.030
英文摘要	A wide range of cracking happens in concrete lining at the crown of the lower adit and high-pressure bifurcation in the water-filled test of bifurcation tunnel at Huizhou Pumped Storage Power Station. Then a field investigation is undertaken to explore the main reason of such prominent lining cracking. Through investigating several possible inducing factors, it is found that mass defects exist in the concrete lining in constructing bifurcation tunnel, and insufficient thickness of concrete lining is probably the main factor causing lining cracks. In order to verify if this conclusion is reasonable, comparative analysis through numerical simulation is utilized to assess the influence of different concrete thicknesses on tunnel stability for the lower adit and high-pressure bifurcation. And then the fracturing process of concrete lining with the increase of internal water pressure during the water-filled test is simulated. The results reveal that the displacements and tensile strains in the lining crown are significantly bigger than other parts of tunnel, with deficiency in concrete thickness considered. It is also concluded that whether the cavities exist or not in the crown, rather than the cavity thickness, is the main factor influencing the values and distributions of the tensile strains and displacements for tunnel lining. Besides, the distribution of tensile-strain-concentrated zones is approximately in good agreement with the in-situ fractured status of concrete lining. Finally, a conclusion can be drawn that deficiency in concrete thickness in the crown is the primary triggering factor for lining cracking. (C) 2015 Elsevier Ltd. All rights reserved.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000372679400013
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3849]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; 2.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S
推荐引用方式 GB/T 7714	Xiao, Ming,Bian, Kang,Liu, Jian,et al. Cause investigation and verification of lining cracking of bifurcation tunnel at Huizhou Pumped Storage Power Station[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2016,54:123-134.
APA	Xiao, Ming,Bian, Kang,Liu, Jian,&Liu, Zhenping.(2016).Cause investigation and verification of lining cracking of bifurcation tunnel at Huizhou Pumped Storage Power Station.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,54,123-134.
MLA	Xiao, Ming,et al."Cause investigation and verification of lining cracking of bifurcation tunnel at Huizhou Pumped Storage Power Station".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 54(2016):123-134.