Similar simulation device for unloading effect of deep roadway excavation and its application

doi:10.1007/s11629-017-4784-2

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2018 > Vol15 No.5

	Similar simulation device for unloading effect of deep roadway excavation and its application
	Dong, CL; Zhao, GM; Lu, XY; Meng, XR; Li, YM; Cheng, X
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2018
卷号	15 期号:5 页码:1115-1128
关键词	Excavation unloading in deep roadways Unloading effect Damage of surrounding rock Circular excavation Unloading index
ISSN号	1672-6316
DOI	10.1007/s11629-017-4784-2
文献子类	Article
英文摘要	The unloading effect of the excavation of deep roadways has been considerably studied, but most research methods have been limited to numerical simulations and field measurements. Only a few have adopted experimental methods for similar simulations. On the basis of the theory of mechanics, the testing system is designed considering initial geostress and dynamic unloading. The system includes an impact unloading gear and in-situ stress loading equipment, and a designed three-link structure and the impact hammer can effectively realize the dynamic excavation of roadways. Meanwhile, a cyclic excavation similar simulation experiment on a deep roadway is conducted in a laboratory. The testing system and the relevant monitoring facilities are utilized, and the unloading effect inside the surrounding rock under the cyclic dynamic excavation is studied. Results show that the cyclic dynamic excavation causes significant unloading only in the nearby rock mass, and the unloading indicators show nonlinear changes. Moreover, when the lateral pressure coefficient is 1.2, the damage is concentrated on both roadsides due to the excavation unloading. Meanwhile, the damage gradually decays as the span increases.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000431989800015
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/35529]
专题	Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.5
推荐引用方式 GB/T 7714	Dong, CL,Zhao, GM,Lu, XY,et al. Similar simulation device for unloading effect of deep roadway excavation and its application[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(5):1115-1128.
APA	Dong, CL,Zhao, GM,Lu, XY,Meng, XR,Li, YM,&Cheng, X.(2018).Similar simulation device for unloading effect of deep roadway excavation and its application.JOURNAL OF MOUNTAIN SCIENCE,15(5),1115-1128.
MLA	Dong, CL,et al."Similar simulation device for unloading effect of deep roadway excavation and its application".JOURNAL OF MOUNTAIN SCIENCE 15.5(2018):1115-1128.