EXCAVATIONS

作品数：44被引量：80H指数：6
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Hybrid stacking ensemble algorithm and simulated annealing optimization for stability evaluation of underground entry-type excavations
《Underground Space》2024年第4期25-44,共20页Leilei Liu Guoyan Zhao Weizhang Liang Zheng Jian 
supported by the National Natural Science Foundation of China(Grant No.52204117);the Natural Science Foundation of Hunan Province,China(Grant No.2022JJ40601).
The stability of underground entry-type excavations(UETEs)is of paramount importance for ensuring the safety of mining operations.As more engineering cases are accumulated,machine learning(ML)has demonstrated great po...
关键词：Underground entry-type excavations(UETEs) Hybrid stacking ensemble Machine learning Simulated annealing Critical span graph Base and meta learners 
Reliability-based robust geotechnical design of braced excavations considering multiple failure modes
《Underground Space》2023年第2期43-52,共10页Li Hong Xiangyu Wang Wengang Zhang 
supported by the National Natural Science Foundation of China(Grant No.52078086);Program of Distinguished Young Scholars,Natural Science Foundation of Chongqing,China(Grant No.cstc2020jcyj-jq0087).
Reliability design of braced excavation is still a challenge for geotechnical community.Optimization design is a normal method to control the safety and cost of braced excavations.This study presents an advanced relia...
关键词：Robust geotechnical design Multi-objective optimization Multiple failure modes Genetic algorithm Statistical uncertainty 
Stability prediction of underground entry-type excavations based on particle swarm optimization and gradient boosting decision tree被引量：3
《Underground Space》2023年第2期234-249,共16页Jian Zhou Shuai Huang Ming Tao Manoj Khandelwal Yong Dai Mingsheng Zhao 
the National Science Foundation of China(Grant No.42177164);the Distinguished Youth Science Foundation of Hunan Province of China(Grant No.2022JJ10073);the Innovation-Driven Project of Central South University(Grant No.2020CX040).
The stability of underground entry-type excavations will directly affect the working environment and the safety of staff.Empirical critical span graphs and traditional statistics learning methods can not meet the requ...
关键词：Stability Entry-type excavations Critical span graph Gradient boosting decision tree Particle swarm optimization 
Undrained stability of pit-in-pit braced excavations under hydraulic uplift被引量：1
《Underground Space》2022年第6期1139-1155,共17页Fengwen Lai Fuquan Chen Songyu Liu Suraparb Keawsawasvong Jim Shiau 
financially supported by the National Natural Science Foundation of China(Grant No.41972269);Fundamental Research Funds for the Central Universities of China(Grant No.2242022 k30055);Postgraduate Research&Practice Innovation Program of Jiangsu Province(Grant No.KYCX20_0118);Scientific Research Foundation of Graduate School of Southeast University(Grant No.YBPY2041);CSC Scholarships.
Pit-in-pit(PIP)excavations in an aquifer–aquitard system likely undergo catastrophic failures under the hydraulic uplift,the associated undrained stability problem,however,has not been well analyzed in the past.To th...
关键词：Pit-in-pit excavation Hydraulic uplift Undrained stability Finite element limit analysis Multivariate adaptive regression splines 
Assessment of basal heave stability for braced excavations in anisotropic clay using extreme gradient boosting and random forest regression被引量：1
《Underground Space》2022年第2期233-241,共9页Wengang Zhang Runhong Zhang Chongzhi Wu Anthony T.C.Goh Lin Wang 
supported by Chongqing Construction Science and Technology Plan Project(2019-0045);Science and Technology Research Program of Chongqing Municipal Education Commission(Grant No.KJZDK201900102);Chongqing Engineering Research Center of Disaster Prevention and Control for Banks and Structures in Three Gorges Reservoir Area(SXAPGC18YB01,SXAPGC18ZD01).
A finite-element analysis considering the anisotropy for the undrained shear strength was performed to examine the effects of the total stress-based anisotropic model NGI-ADP(developed by Norwegian Geotechnical Instit...
关键词：ANISOTROPY NGI-ADP Basal heave Braced excavation Ensemble learning 
Effects of jet grouting slabs on responses for deep braced excavations被引量：3
《Underground Space》2021年第2期185-194,共10页Wengang Zhang Li Hong Yongqin Li Runhong Zhang Anthony T.C.Goh Hanlong Liu 
the Chongqing Construction Science and Technology Plan Project(No.2019-0045);National Natural Science Foundation of Chongqing,China(No.cstc2018jcyjAX0632);Science and Technology Research Program of Chongqing Municipal Education Commission(No.KJZDK201900102).
Jet grouting slabs are widely used in deep excavations owing to their effectiveness for reducing the deflection of the diaphragm wall and the prop forces acting on the struts and improving the basal-heave stability.In...
关键词：Jet grouting slab Deep excavation Soft clay Finite-element analysis 
Effects of soil spatial variability on structural reliability assessment in excavations被引量：2
《Underground Space》2020年第1期71-83,共13页Zhe Luo Honggui Di Mehrad Kamalzare Yixiang Li 
The second author would like to thank the support received from the National Natural Science Foundation of China through Grant No.51808405.
In this study,the effects of soil spatial variability in braced excavations are investigated by focusing on three structural responses:wall bending moments,wall shear forces,and strut forces.The soil spatial variabili...
关键词：Braced excavations Soil spatial variability Random field modeling Finite element method 
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