Excavation Optimization and Stability Analysis for Large Underground Caverns Under High Geostress: A Case Study of the Chinese Laxiwa Project

doi:10.1007/s00603-018-1605-z

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	Excavation Optimization and Stability Analysis for Large Underground Caverns Under High Geostress: A Case Study of the Chinese Laxiwa Project
	Jiang, Quan; Su, Guoshao; Feng, Xia-ting; Chen, Guoqing; Zhang, Mei-zhu; Liu, Chang
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2019
卷号	52 期号:3 页码:895-915
关键词	Underground caverns Hard rock Excavation optimization Brittle failure Stability analysis
ISSN号	0723-2632
DOI	10.1007/s00603-018-1605-z
英文摘要	In situ investigations and detailed laboratory tests indicated that the granite at the Laxiwa hydraulic station is a typical hard rock, with high compressive strength and elasto-brittle failure modes, such as spalling and slabbing, and that the underground caverns are prone to brittle failure. Thus, an intelligent optimization method for cavern excavation was developed to improve the underground engineering's stability during its construction. This artificial intelligence method utilized the advantages of both the particle swarm optimization algorithm, which is capable of global optimization, and the support vector machine algorithm, which is capable of highly nonlinear mapping. The corresponding numerical analysis indicated that this optimization of excavation sequencing can considerably reduce both the total volume of the damage zone and the brittle failure of the surrounding rock. Furthermore, the measured deformations, the depth of the tested excavation damage zone, and the exposed in situ failures resulting from the applied excavation scheme were similar to the results predicted by the numerical simulation of the cavern excavation.
WOS研究方向	Engineering ; Geology
语种	英语
WOS记录号	WOS:000460704000016
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/15036]
专题	岩土力学所知识全产出_期刊论文
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Quan,Su, Guoshao,Feng, Xia-ting,et al. Excavation Optimization and Stability Analysis for Large Underground Caverns Under High Geostress: A Case Study of the Chinese Laxiwa Project[J]. ROCK MECHANICS AND ROCK ENGINEERING,2019,52(3):895-915.
APA	Jiang, Quan,Su, Guoshao,Feng, Xia-ting,Chen, Guoqing,Zhang, Mei-zhu,&Liu, Chang.(2019).Excavation Optimization and Stability Analysis for Large Underground Caverns Under High Geostress: A Case Study of the Chinese Laxiwa Project.ROCK MECHANICS AND ROCK ENGINEERING,52(3),895-915.
MLA	Jiang, Quan,et al."Excavation Optimization and Stability Analysis for Large Underground Caverns Under High Geostress: A Case Study of the Chinese Laxiwa Project".ROCK MECHANICS AND ROCK ENGINEERING 52.3(2019):895-915.