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Hehua ZHU, Qianwei XU, Wenqi DING, Feng HUANG
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 208-224 doi: 10.1007/s11709-011-0111-0
关键词: progressive failure weak-broken rock slope model test bolt
万飞,谭忠盛,杨森森,马栋
《中国工程科学》 2014年 第16卷 第8期 页码 45-53
依托关角隧道河谷浅埋段,展开富水软弱围岩隧道支护受力特征及方案的研究。对试验段的初支围岩压力、钢架应力、锚杆轴力、衬砌水压力进行现场监测,结果表明:初支应力不能得到有效控制、突水突泥塌方现象时有发生,现有的支护方案无法满足浅埋段安全施工要求。在监测数据基础上,经过综合分析,对支护方案作出调整。在Ⅴ级围岩区段,拱部120°范围设超前管棚和小导管,宽大节理掌子面超前小导管注浆加固,初期支护取消系统锚杆,采用I20 型钢钢架和拱墙设双层钢筋网;在Ⅵ级围岩区段,超前支护采用管棚工作室施作拱部180°及以下1 m范围的0°角长管棚,全断面超前水平钻孔注浆,初期支护取消系统锚杆,采用I20 型钢钢架、三台阶型钢临时横撑和双层防水板。研究成果可为河谷浅埋隧道支护方案的确定提供理论依据和基础数据,为同类工程的设计与施工决策提供借鉴。
《能源前沿(英文)》 2022年 第16卷 第6期 页码 943-955 doi: 10.1007/s11708-021-0793-5
关键词: weak grids voltage source (VS) control wind turbine (WT) stabilization control wind farm inertial response
Enhancement of sludge gravitational thickening with weak ultrasound
Panyue ZHANG, Tian WAN, Guangming ZHANG
《环境科学与工程前沿(英文)》 2012年 第6卷 第5期 页码 753-760 doi: 10.1007/s11783-011-0368-5
关键词: activated sludge sonication settlability dry weight extracellular polymeric substances polyelectrolyte
Modeling and analysis of magnetic dipoles in weak magnetic field
WANG Zhaoxia, ZHANG Weimin, LIU Hongguang
《机械工程前沿(英文)》 2008年 第3卷 第2期 页码 222-225 doi: 10.1007/s11465-008-0028-z
关键词: geomagnetic theory important criterion magnetic leakage normal component
Stability analysis on Tingzikou gravity dam along deep-seated weak planes during earthquake
Weiping HE, Yunlong HE
《结构与土木工程前沿(英文)》 2012年 第6卷 第1期 页码 69-75 doi: 10.1007/s11709-012-0146-x
关键词: gravity dam deep-seated weak planes stability against sliding earthquake
Rahul SHARMA,Sathans SUHAG
《能源前沿(英文)》 2020年 第14卷 第2期 页码 400-409 doi: 10.1007/s11708-017-0459-5
关键词: PV system grid interface feedback linearization inverter LCL filter
Computational methods for fracture in rock: a review and recent advances
Ali JENABIDEHKORDI
《结构与土木工程前沿(英文)》 2019年 第13卷 第2期 页码 273-287 doi: 10.1007/s11709-018-0459-5
关键词: numerical modelling method development rock mechanics fractured rock rock fracturing
Wavelet design for extracting weak fault feature based on lifting scheme
JIANG Hong-kai, WANG Zhong-sheng, HE Zheng-jia
《机械工程前沿(英文)》 2006年 第1卷 第2期 页码 199-203 doi: 10.1007/s11465-006-0009-z
Extended stochastic resonance (SR) and its applications in weak mechanical signal processing
Niaoqing HU, Min CHEN, Guojun QIN, Lurui XIA, Zhongyin PAN, Zhanhui FENG,
《机械工程前沿(英文)》 2009年 第4卷 第4期 页码 450-461 doi: 10.1007/s11465-009-0072-3
关键词: extended stochastic resonance (SR) stability analysis of SR scale transform weak signal detection incipient fault detection envelope analysis
Weak characteristic information extraction from early fault of wind turbine generator gearbox
Xiaoli XU, Xiuli LIU
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 357-366 doi: 10.1007/s11465-017-0423-4
Given the weak early degradation characteristic information during early fault evolution in gearbox of wind turbine generator, traditional singular value decomposition (SVD)-based denoising may result in loss of useful information. A weak characteristic information extraction based on µ-SVD and local mean decomposition (LMD) is developed to address this problem. The basic principle of the method is as follows: Determine the denoising order based on cumulative contribution rate, perform signal reconstruction, extract and subject the noisy part of signal to LMD and µ-SVD denoising, and obtain denoised signal through superposition. Experimental results show that this method can significantly weaken signal noise, effectively extract the weak characteristic information of early fault, and facilitate the early fault warning and dynamic predictive maintenance.
关键词: wind turbine generator gearbox µ-singular value decomposition local mean decomposition weak characteristic information extraction early fault warning
陈斌,和铁柱,赵明生
《中国工程科学》 2014年 第16卷 第11期 页码 53-57
分析了在软弱夹层地质条件下爆破飞石产生的原因及机理,根据软弱夹层产生爆破飞石的特点,区分了在软弱夹层和一般岩体条件下飞石产生的差别。在软弱夹层的地质条件下以及城镇复杂的爆破环境下,给出了合理有效控制爆破飞石的措施。
《结构与土木工程前沿(英文)》 doi: 10.1007/s11709-023-0035-5
Chao WU,Lu-ping XU,Hua ZHANG,Wen-bo ZHAO
《信息与电子工程前沿(英文)》 2015年 第16卷 第9期 页码 796-804 doi: 10.1631/FITEE.1500058
关键词: Threshold detection Discrete chirp-Fourier transform Block zero-padding High dynamic Weak L1 signal acquisition
标题 作者 时间 类型 操作
Experimental study on the progressive failure and its anchoring effect of weak-broken rock vertical slope
Hehua ZHU, Qianwei XU, Wenqi DING, Feng HUANG
期刊论文
Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions
期刊论文
Enhancement of sludge gravitational thickening with weak ultrasound
Panyue ZHANG, Tian WAN, Guangming ZHANG
期刊论文
Modeling and analysis of magnetic dipoles in weak magnetic field
WANG Zhaoxia, ZHANG Weimin, LIU Hongguang
期刊论文
Stability analysis on Tingzikou gravity dam along deep-seated weak planes during earthquake
Weiping HE, Yunlong HE
期刊论文
Feedback linearization based control for weak grid connected PV system under normal and abnormal conditions
Rahul SHARMA,Sathans SUHAG
期刊论文
Wavelet design for extracting weak fault feature based on lifting scheme
JIANG Hong-kai, WANG Zhong-sheng, HE Zheng-jia
期刊论文
Extended stochastic resonance (SR) and its applications in weak mechanical signal processing
Niaoqing HU, Min CHEN, Guojun QIN, Lurui XIA, Zhongyin PAN, Zhanhui FENG,
期刊论文
Weak characteristic information extraction from early fault of wind turbine generator gearbox
Xiaoli XU, Xiuli LIU
期刊论文
Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite
期刊论文