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application of the real-time monitoring system for filling construction process of high core rock-fill dam

Cui Bo,Hu Lianxing,Liu Donghai

Strategic Study of CAE 2011, Volume 13, Issue 12, Pages 91-96

Abstract:

In this paper, on the basis of research on high core rock-fill dam fillingmonitoring is determined; the solution scheme is proposed; the monitoring system of core rock-fill damand rolling on dam surface.The monitoring system is applied in the construction field of the highest earth rock-fill dam in Asia, Nuozhadu core rock-fill dam, as the core component of the construction process control architecture

Keywords： high core rock-fill dam filling construction process real-time monitoring transportation to dam rollingon dam surface development and application

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Two-sided ultrasonic surface rolling process of aeroengine blades based on on-machine noncontact measurement

Shulei YAO, Xian CAO, Shuang LIU, Kaiming ZHANG, Xiancheng ZHANG, Congyang GONG, Chengcheng ZHANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2, Pages 240-255 doi: 10.1007/s11465-019-0581-7

Abstract: The ultrasonic surface rolling process (USRP) is a novel surface treatment technique that can highly

Keywords： aeroengine blades on-machine noncontact measurement point cloud processing path planning surface strengthening

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A rolling 6U parallel mechanism

Zhihuai MIAO, Yanan YAO

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1, Pages 96-98 doi: 10.1007/s11465-011-0214-2

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Novel probabilistic rolling regular tetrahedron mechanism

Yonghan GUAN, Yan’an YAO, Chao LIU, Ruiming LI

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2, Pages 363-378 doi: 10.1007/s11465-020-0628-9

Abstract: In this study, a novel mechanism that can conduct probabilistic rolling is proposed to reach a designatedAccording to mobility and kinematic analyses, the mechanism can implement probabilistic rolling.Each rolling gait has three probable rolling directions, and the mechanism rolls in one of the threeFurthermore, the mathematical principle of probabilistic rolling is revealed in terms of probabilityTo achieve the rolling function, the design of the linear actuators is improved, and the extension ratio

Keywords： mobile mechanism probabilistic motion rolling mechanism stochastic motion

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A rolling 3-UPU parallel mechanism

Zhihuai MIAO, Yan’an YAO, Xianwen KONG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4, Pages 340-349 doi: 10.1007/s11465-013-0282-6

Abstract:

A novel rolling mechanism is proposed based on a 3-UPU parallel mechanism in this paper.The rolling mechanism is composed of two platforms connected by three UPU (universal-prismatic-universalFour rolling modes of the mechanism are discussed and simulated.The feasibility of the rolling mechanism is verified by means of a physical prototype.Finally, its terrain adaptability is enhanced through planning the rolling gaits.

Keywords： parallel mechanism rolling mechanism screw theory

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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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SH-Mode Seismic-Reflection Imaging of Earthfill Dams Article

Edward W. Woolery

Engineering 2018, Volume 4, Issue 5, Pages 694-701 doi: 10.1016/j.eng.2018.08.009

Abstract: ., faults, cavities, low-velocity layers, etc.) are typical problems in near-surface geophysics.Dam-related issues are becoming more frequent in the United States, because a large part of this majorAddressing dam-related problems solely with traditional invasive drilling techniques is often inadequateHowever, strategic geotechnical drilling integrated with the broad utility of near-surface geophysics

Keywords： Geophysics Seismic reflection Shear-wave Near-surface Dam safety

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Key Technologies of the Hydraulic Structures of the Three Gorges Project

Xinqiang Niu

Engineering 2016, Volume 2, Issue 3, Pages 340-349 doi: 10.1016/J.ENG.2016.03.006

Abstract: Many key technological problems regarding hydraulic structures have been overcome, such as a gravity dam

Keywords： Three Gorges Project Large orifice gravity dam Penstock on dam downstream surface Tailrace tunnel with

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Engineering Characteristics and Design of the Crushed Stones and Earth as Impervious Material for the Dam

Wang Shougen

Strategic Study of CAE 2004, Volume 6, Issue 7, Pages 88-93

Abstract:

The dam of Qiaoqi Hydropower Project is 123m high, in which it is the first time for the spreadinggradation crushed stone-earth to be adopted as the impervious material for so high an earth — rock damSecond, the representative earth sample is selected to verify if the control standard is reasonable by rollingFinally, the three -dimension stress and strain and seepage about the dam body and foundation are calculatedto analyze the rationality of the control standard for these materials and the safety factor of the dam

Keywords： Project spreading gradation crushed stones and earth impervious material engineering characteristics rolling

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Outline of Strip Rolling Technological Control Theory

Zhang Jinzhi

Strategic Study of CAE 2001, Volume 3, Issue 4, Pages 46-55

Abstract:

Classical rolling theory, which is based on the law of the lowest resistance,the condition of constantvolume and the condition of equal flow per second,has formed a fairly integrated rolling applied technologyThis system reflects only the static law of rolling process,so it is necessary to control dynamic rollingtheory, classical rolling theory based on mechanics took the lead before the establishment of springA new theory system, which is based on fundamental rolling technology control theory, is set up.

Keywords： continuous rolling process control tension in continuous rolling gauge control shape stiffness springequation for rolling mill comprehensive equal reserves for load distribution

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Long-term dam safety monitoring of Punt dal Gall arch dam in Switzerland

M. WIELAND, G.F. KIRCHEN

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1, Pages 76-83 doi: 10.1007/s11709-012-0144-z

Abstract: The 130 m high Punt dal Gall dam is located at the Swiss-Italian border in the South-eastern part ofThe dam is founded on highly folded and partially crushed dolomite and limestone formations.For the monitoring of the dam deformations five inverted pendulums were installed in the dam and threein the rock foundation of the right abutment outside of the dam.The paper describes the long-term safety monitoring of this 42 years old arch dam.

Keywords： dam safety concept arch dam dam instrumentation dam safety monitoring

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Rolling-element bearings in China: From ancient times to the 20th century

Lie SUN,Ang LI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1, Pages 33-43 doi: 10.1007/s11465-016-0373-2

Abstract:

The development of rolling-element bearings in China has spanned a long period.Based on several typical and important cases, the present article reconstructs the history of rolling-elementThe first stage represents the origin of rolling bearings in China, which remains controversial becauseAnother type of spherical thrust bearings with rolling elements, which is a key component of a traditionalMoreover, over the last 100 years, the modern rolling bearing industry was gradually established in China

Keywords： bearing movement rolling-element bearing China early rolling bearings technology transfer

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China's High Dams Construction and Research on Science and Technology

Chen Zongliang

Strategic Study of CAE 2000, Volume 2, Issue 12, Pages 84-89

Abstract: The scientific and technological achievements and their application in geologic exploration, dam construction, flood discharging and energy dissipation, treatment of dam foundation and treatment of high rock slopeThey in elude the 181 m-high concrete gravity dam in the Three Gorges Project, the 240 m — highCFRD, the 233 m~high Shuibuya CFRD, the 130 m- high Shapai RCC arch dam, the 131 m- high Jiangya RCCgravity dam, etc.

Keywords： hydroelectric power high dam gravity dam arch dam roller compacted concrete dam (RC-CD) concrete facerockfill dam (CFRD)

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simulation and analysis of periodically oscillating pressure characteristics of inviscid flow in a rolling

Yan GU, Yonglin JU

Frontiers in Energy 2012, Volume 6, Issue 1, Pages 21-28 doi: 10.1007/s11708-012-0173-2

Abstract: in order to understand the periodically oscillating pressure characteristics of inviscid flow in the rollingThe computational model of the circular pipe flow is established with the excitated rolling motion, atFurthermore, theoretical analyses of the flow in the rolling circular pipe are conducted and the results

Keywords： pressure fluctuation rolling floating production storage and offloading unit for liquefied natural gas

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Features of seismic hazard in large dam projects and strong motion monitoring of large dams

Martin WIELAND,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1, Pages 56-64 doi: 10.1007/s11709-010-0005-6

Abstract: Earthquakes can affect large dam projects in many different ways.Among these dams were the 132-m-high Shapai RCC arch dam and the 156-m-high Zipingpu concrete face rockfilldam.These recently completed dams are dam types which, up to now, have not experienced strong ground shakingThe widespread mass movements have caused substantial damage to dams and surface powerhouses in Sichuan

Keywords： seismic hazard arch dam concrete face rockfill dam strong motion instrumentation reservoir-triggered