水科学与工程技术
水科學與工程技術
수과학여공정기술
WATER SCIENCES AND ENGINEERING TECHNOLOGY
2013年
5期
82-85,86
,共5页
引水隧洞%地质岩性%衬砌结构%随机有限元%失事概率
引水隧洞%地質巖性%襯砌結構%隨機有限元%失事概率
인수수동%지질암성%츤체결구%수궤유한원%실사개솔
diversion tunnel%geologic lithology%lining structure%stochastic finite elements%breakage probability
针对长距离引水隧洞的工程实际，综合考虑地质条件以及围岩和衬砌结构参数的不确定性，采用随机有限元方法分析确定不同类型的衬砌结构在不同围岩下的失事概率，再由隧洞沿程岩性的分布概率得到衬砌结构的选型不匹配概率，最终由全概率公式确定隧洞沿程衬砌结构的失事概率，从而有针对性地提高隧洞衬砌结构设计的安全性和可靠性。
針對長距離引水隧洞的工程實際，綜閤攷慮地質條件以及圍巖和襯砌結構參數的不確定性，採用隨機有限元方法分析確定不同類型的襯砌結構在不同圍巖下的失事概率，再由隧洞沿程巖性的分佈概率得到襯砌結構的選型不匹配概率，最終由全概率公式確定隧洞沿程襯砌結構的失事概率，從而有針對性地提高隧洞襯砌結構設計的安全性和可靠性。
침대장거리인수수동적공정실제，종합고필지질조건이급위암화츤체결구삼수적불학정성，채용수궤유한원방법분석학정불동류형적츤체결구재불동위암하적실사개솔，재유수동연정암성적분포개솔득도츤체결구적선형불필배개솔，최종유전개솔공식학정수동연정츤체결구적실사개솔，종이유침대성지제고수동츤체결구설계적안전성화가고성。
For long-distance diversion tunnel engineering practice, considering the uncertainty of the geological conditions and the parameter of the surrounding rock and lining structure, taking advantage of the stochastic finite element analysis to ascertain the breakage probability of the different types of lining structure under the different rock, and the probability of structure type incorrect selection is determined by the distribution probability of tunnel along the lithology. Finally, we can obtain the structure breakage probability by the formula of full probability at anywhere along the tunnel, which can be targeted to improve the safety and reliability of the tunnel lining structure design and provide the basis for project risk prevention.
