Mechanic Parameters Back Analysis of Surrounding Rocks in Gongguoqiao Underground Powerhouse

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	Mechanic Parameters Back Analysis of Surrounding Rocks in Gongguoqiao Underground Powerhouse
	Li, Jianpeng; Liu, Jian
	2011
会议日期	SEP 26-27, 2011
会议地点	Kuala Lumpur, MALAYSIA
关键词	underground cavern neural network mechanic parameters of surrounding rocks zoning back analysis
页码	186-189
英文摘要	This paper is based on the background of Gongguoqiao hydropower station. In order to get more accurate mechanics parameters and their space distribution, Surrounding rocks of the main plant was divided into loose zone, transition zone and unaffected zone according to the intensity of damage. The scope of the loose zone was determined by sonic wave Testing results. The depth of the transition zone was introduced into the input variables of the neural network, so as to reduce subjectivity. Based on orthogonal numerical results, the neural network model whose inputs were the rock mechanical parameters and transition zone thickness and outputs were the displacement of the key points was established. And then the rock mechanical parameters and the transition zone thickness were obtained by using genetic algorithm and measured data of monitoring points. Then the results of back analysis were introduced into FEA. According to the result of finite element calculation, the error between displacement of monitoring points got from FEM analysis and actual measurement is less than 6%, which proved the reasonableness of the results of back analysis.
会议录	2011 AASRI CONFERENCE ON INFORMATION TECHNOLOGY AND ECONOMIC DEVELOPMENT (AASRI-ITED 2011), VOL 1
会议录出版者	AMER APPLIED SCIENCES RESEARCH INST
会议录出版地	LA PUENTE
语种	中文
WOS研究方向	Computer Science ; Engineering
WOS记录号	WOS:000398979700047
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4586]
专题	岩土力学所知识全产出_会议论文
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech
推荐引用方式 GB/T 7714	Li, Jianpeng,Liu, Jian. Mechanic Parameters Back Analysis of Surrounding Rocks in Gongguoqiao Underground Powerhouse[C]. 见:. Kuala Lumpur, MALAYSIA. SEP 26-27, 2011.