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Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1, Pages 17-24 doi: 10.1007/s11465-018-0480-3

Abstract:

Shaft part rolling is an efficient and green near-net shaping technology offering many advantages,In this paper, the features of shaft part rolling are introduced along with the working principles oftwo main shaft part rolling technologies, namely, cross wedge rolling (CWR) and skew rolling (SR).Finally, the latest developments in shaft part rolling are presented, including SR steel balls, preciseAlthough the shaft part rolling technology has been widely used in China, it only accounts for about

Keywords： cross wedge rolling skew rolling near-net rolling shaft part

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Estimation of power in low velocity vertical axis wind turbine

Sampath S. S.,Sawan SHETTY,Chithirai Pon Selvan M.

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2, Pages 211-218 doi: 10.1007/s11465-015-0338-x

Abstract: The mechanical energy is converted into the electrical energy by coupling coaxially between the shaft

Keywords： wind turbine shaft design power generation generator

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The Research of Steel and Glass Fiber Reinforced Plastic Guide of Mining Shaft

Zeng Xiantao,Guo Jinpu

Strategic Study of CAE 2002, Volume 4, Issue 12, Pages 71-76

Abstract: fiber reinforced plastic has been developed and researched in view of the present situation that the shaftThe corrosion resistance of the guide can meet the needs of mining shaft use, and the corrosion resistant

Keywords： mining shaft glass fiber reinforced plastic (GFRP) guide

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Stress observation of shaft lining wall during construction and initial operation

Wen Dehua

Strategic Study of CAE 2012, Volume 14, Issue 2, Pages 80-84

Abstract:

For searching the stress and deformation law of blended shaft-liningduring construction and initial operation, sensors were buried in interior and exterior wall of shaft-liningWith the law, we can forecast the long-term safety of shaft lining and provide scientific decision evidence

Keywords： shaft lining monitoring thick topsoil strain additional force

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Monitor and control of ultra deep shaft safety and efficient construction

Shen Weian,Liang Hengchang,Zhao Guangsi

Strategic Study of CAE 2012, Volume 14, Issue 2, Pages 45-48

Abstract:

With the increase of the depth of shaft construction, shaft wall safetyTo ensure the safety and shaft wall construction safety and other factors, the real-time control andBase on the background of Benxi Dataigou Iron Mine's ultra-deep shaft with diameter of 6.5 m, depthof 1 640 m, the paper proposed methods to monitor the shaft wall safety and the condition of constructionThe monitor system implementation plan may provide detailed information for ultradeep shaft efficient

Keywords： ultra deep shaft safety information construction monitor and control

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Study on shaft drilling and blasting construction risk analysis and countermeasures of Bohai Strait tunnel

Zhang Wenxin and Zou Chong

Strategic Study of CAE 2013, Volume 15, Issue 12, Pages 101-106

Abstract:

In view of the shaft construction risk analysis of Bohai Strait tunnelthe sequence in turn from low to high is supporting structure failure risk, natural disaster risk and shaftConsidering the influences of key risk and other risks on the shaft construction,we put forward responsemeasures about shaft construction risk of Bohai Stiait tunnel from the geological forecast,shaft hoistingprevention, shaft supporting structure for quality control and the establishment of the shaft system

Keywords： strait tunnel shaft construction drilling and blasting method risk analysis response measures

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Construction technology of well shaft tower construction engineering

Yang Yiming,Huang Jiapin,Shen Xihua,Cao Yueqin and Ma Zhimin

Strategic Study of CAE 2012, Volume 14, Issue 2, Pages 85-89

Abstract:

Taking the construction of the main shaft hoisting in Longgu 1# CoalMine for example, the organizational characteristics of the well shaft tower and equipments, elevatorother parallel operation of installation construction were introduced, and the technologies of tower shaft

Keywords： parallel operations well tower sliding shaft equipment elevator installation construction technology

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The vertical shaft construction-technology of the cutter transformation of large-diameter shield

Wang Zhenfei,He Feng,He Shanning

Strategic Study of CAE 2010, Volume 12, Issue 12, Pages 103-107

Abstract:

Taking vertical shaft construction of the cutter transformation of theBeijing underground diameter shield for example, the design and construction of cutter structure transformationunder complex boundary conditions for large-diameter shield shaft were discussed.Practice about how to ensure the structural safety of the shaft as well as well-coordinated shield construction

Keywords： large-diameter shield transformation shaft complex conditions

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Assessment of Mechanical Characteristic for Reinforced Concrete Precast Arc Shaft Lining

Rong Chuanxin,Wang Xiuxi,Cheng Hua

Strategic Study of CAE 2005, Volume 7, Issue 7, Pages 43-49

Abstract:

Assessment of mechanical characteristic for reinforced concrete precast arc shaft lining is achievedAt the same time, the load carrying capacity of the high strength reinforced concrete precast arc shaftTherefore for designing the high and strong reinforced concrete precast arc shaft lining, the ratio of

Keywords： high strength reinforced concrete precast arc shaft lining mechanical characteristic finite element method

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The location choice and construction technology of shafts in Bohai Strait tunnel

Wang Yunlong,Tan Zhongsheng

Strategic Study of CAE 2013, Volume 15, Issue 12, Pages 85-89

Abstract: construction and operation ventilation and the research of the island sites,the feasibility of the shaftroad tunnel,a molding method of drilling and blasting was used to construct the Bohai Strait tunnel shaft; the main measure of the construction of shaft topsoil should be plugging; the main technology program

Keywords： subsea tunnel shaft ventilation construction technology

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Application of New Technology in Underground Engineering

Ma Hongqi

Strategic Study of CAE 2002, Volume 4, Issue 11, Pages 37-41

Abstract: The design principle for such kind of manifold is based on bearing the water pressure mainly by the surroundingconcrete quality control and high-pressure grouting have been taken in construction to achieve the designSuccessful performance has been achieved in inclined-shaft construction of Guangzhou Pumped-storage Projectby improving and bettering a set of interval inclined-shaft slipform imported.The self-innovated and patented XHM-7 inclined-shaft slipform equipment used in the long inclined-shaft

Keywords： hydropower underground engineering manifold inclined-shaft new technology

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Several issues to be further considered in construction of Bohai Strait crossing passage

Hong Kairong

Strategic Study of CAE 2013, Volume 15, Issue 12, Pages 80-84

Abstract:

Bohai Strait crossing passage is a strategic project, which has a significant role in boosting the development of Bohai surrounding economic zone and East China. In the paper,the construction mode,longitudinal profile, construction methods and planning of Bohai Strait crossing passage is further studied on basis of the common concept of tunnel crossing Laotieshan waterway. It is proposed that the form of full tunnel with two underground stations built in backfilled ground in the sea should be adopted for Bohai Strait crossing passage and that the tunnel should be constructed by open tunnel boring machine (TBM) method, with drill and blast as the assisting method.

Keywords： strait tunnel construction method construction planning shaft arrangement

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Time Series Diagnosing Analysis for the Fatigue Crack of Large-scale and Heavyburden Supporting Shafts

Li Xuejun,Bin Guangfu,Wang Yuqing

Strategic Study of CAE 2006, Volume 8, Issue 4, Pages 50-53

Abstract:

Because of the unobserved sudden fatigue failure of the large-scale and heavyburden supporting shafts, the normal product line is affected seriously. Based on analyzing the relation ship between this type of supporting shafts construction characteristics and vibration signal characteristic, the model of the vibration signal is established by the method of time series.Residual ( $σ_{a}^{2}$ ) and normal residue square sum (NRSS) are adopted to identify the fault state, and the degree of supporting shafts' fatigue crack is diagnosed effectively.The result of experiment shows that the method of time series using $σ_{a}^{2}$ and NRSS as the index to diagnose the fatigue crack of large-scale and heavyburden supporting shafts is more sensitive and effective than the normal method using time-frequency domain of amplitude, and has very strong practicability.

Keywords： large-scale and heavyburden machine supporting shaft concealment part fatigue crack time series

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Challenges and Thoughts on the Development of Large-Diameter Drilling Technology and Equipment

Liu Zhiqiang, Chen Xiangsheng, Cai Meifeng, Ji Hongguang, Song Zhaoyang

Strategic Study of CAE 2022, Volume 24, Issue 2, Pages 132-139 doi: 10.15302/J-SSCAE-2022.02.018

Abstract: Moreover, we pinpoint the development directions of shaft construction technology and equipment and proposeconstruction of intelligent drilling platforms and demonstration projects, thereby providing support for shaft

Keywords： underground engineering，shaft construction，mineral exploitation，underground space development and utilization

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Reliability design method for steam turbine blades

SHI Jinyuan

Frontiers in Energy 2008, Volume 2, Issue 4, Pages 363-368 doi: 10.1007/s11708-008-0073-7

Abstract: , vibration frequencies and exciting force frequencies of blades as random variables, a reliability designSome blade reliability design calculation formulas for a dynamic stress design method, a safety ratiodesign method for fatigue strength, and a vibration reliability design method for the first and secondWith these methods, the design reliability of steam turbine blades can be guaranteed in the design stageThis research may provide some scientific basis for reliability design of steam turbine blades.

Keywords： design reliability force probability purport reliability design