Rheological properties of surrounding rock in deep hard rock tunnels and its reasonable support form

doi:10.1007/s11771-016-3137-6

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

	Rheological properties of surrounding rock in deep hard rock tunnels and its reasonable support form
	Wang Hui 1,2; Chen Wei-zhong 2,3; Wang Qing-biao 1; Zheng Peng-qiang 1
刊名	JOURNAL OF CENTRAL SOUTH UNIVERSITY
	2016
卷号	23 期号:4 页码:898-905
关键词	rheological test constitutive model staged optimization analysis reasonable support form
ISSN号	2095-2899
DOI	10.1007/s11771-016-3137-6
英文摘要	Second lining stability, which is the last protection in tunnel engineering, is critically important. The rheological properties of the surrounding rock heavily affect second lining stability. In this work, we used laboratory triaxial compressive rheological limestone tests to study nonlinear creep damage characteristics of surrounding rock mass in construction projects. We established a nonlinear creep damage constitutive model for the rock mass, as well as a constitutive model numerical implementation made by programming. Second, we introduced a new foam concrete with higher compression performance and good ductility and studied its mechanical properties through uniaxial and triaxial tests. This concrete was used as the filling material for the reserved deformation layer between the primary support and second lining. Finally, we proposed a high efficiency and accuracy staged optimization method. The minimum reserved deformation layer thickness was established as the optimization goal, and the presence of plastic strain in the second lining after 100 years of surrounding rock creep was used as an evaluation index. Reserved deformation layer thickness optimization analysis reveals no plastic strain in the second lining when the reserved deformation minimum thickness layer is 28.50 cm. The results show that the new foam concrete used as a reserved deformation layer filling material can absorb creep deformation of surrounding rock mass, reduce second lining deformation that leads to plastic strain, and ensure long-term second lining stability.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY
WOS记录号	WOS:000374460600017
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3858]
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.Shandong Univ Sci & Technol, Dept Resources & Civil Engn; 2.Shandong Univ, Geotech & Struct Engn Res Ctr ; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Wang Hui,Chen Wei-zhong,Wang Qing-biao,et al. Rheological properties of surrounding rock in deep hard rock tunnels and its reasonable support form[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2016,23(4):898-905.
APA	Wang Hui,Chen Wei-zhong,Wang Qing-biao,&Zheng Peng-qiang.(2016).Rheological properties of surrounding rock in deep hard rock tunnels and its reasonable support form.JOURNAL OF CENTRAL SOUTH UNIVERSITY,23(4),898-905.
MLA	Wang Hui,et al."Rheological properties of surrounding rock in deep hard rock tunnels and its reasonable support form".JOURNAL OF CENTRAL SOUTH UNIVERSITY 23.4(2016):898-905.