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austempered ductile iron (ADI) 1

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Theory and practice of integrated pillarless coal production and methane extraction in multiseams of low permeability

Yuan liang

Strategic Study of CAE 2009, Volume 11, Issue 5,   Pages 72-80

Abstract: fill technologies are developed, and technological innovations in methane extraction are made with the retained

Keywords: coal seams of low-permeability     integrated pillarless     retained roadway     methane     coal production and    

A review of sustainability metrics for the construction and operation of airport and roadway infrastructure

Sarah M. L. HUBBARD, Bryan HUBBARD

Frontiers of Engineering Management 2019, Volume 6, Issue 3,   Pages 433-452 doi: 10.1007/s42524-019-0052-1

Abstract: relatively little attention has focused on metrics for the construction and operation of airport and roadwaySustainability is also important in airport and roadway infrastructure projects, which have significantthis paper is to provide an overview and discussion of sustainability rating systems for airport and roadway

Keywords: sustainable construction     infrastructure     airport     roadway     resiliency     sustainability    

Research on bolt-cable reducing span support technology in large span roadway of fully-mechanized coal

Zhu Yongjian,Luo Yixin,Zhang Daobing

Strategic Study of CAE 2010, Volume 12, Issue 3,   Pages 51-55

Abstract:

Aiming at the locale facts of difficult roof controlling for large span gateway of fully-mechanized coal faces, based on analysis of the influence factors of monolayer strata stability, the numerical simulation soft UDEC3.0 is employed to deeply research influence factors and changing rules of roof stability of the gateway which is composed by some monolayer strata. A new supporting idea of reducing span supporting function by bolts cooperating with anchor cables is brought forward by disposing anchor cables at the appropriate locations, the traditional supporting theory such as suspensory and compounding beam (arch) are still operated at the same time. A good result is achieved after the new supporting idea is applied in the large span gateway of Bulianta Colliery in Shendong diggings.

Keywords: large span     roadway     roof     bolt—cable     reducing span support    

Mechanical properties of vanadium-alloyed austempered ductile iron for crankshaft applications

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0746-2

Abstract: comprehensively, and the results were correlated with their microstructures and the stability of the retainedMoreover, the X-ray diffraction results revealed that the retained austenite volume and the carbon enrichmentThe increase in volume fraction of retained austenite and its carbon content provided favorable ductility

Keywords: austempered ductile iron (ADI)     vanadium alloying     mechanical properties     crankshafts     retained austenite    

Classification Model and Its Application of Stability of Roadway Driving Along Next Goaf for Fully-mechanized

Zhu Chuanqu,Wang Weijun,Shi Shiliang

Strategic Study of CAE 2006, Volume 8, Issue 3,   Pages 35-38

Abstract:

The stability of roadway driving along next goaf for fully-mechanized caving face is syntheticallydepth, joint and crack of surrounding rock, mining operation, top coal thickness, width of pillar and roadwayexperience and observation data, the subordination functions of the factors influencing the stability of roadwayaccurate and reliable, and plays an important part in the support design, construction and management of roadway

Keywords: roadway driving along next goaf for fully-mechanized caving face     stability of surrounding rock     classification    

The research and application of large power roadheader

Zhang Lansheng,Wei Jingsheng,Yang Yang,Song Yuehui

Strategic Study of CAE 2011, Volume 13, Issue 11,   Pages 50-58

Abstract:

Developing rock roadway of coal mine is a hard task at present.Mechanized drivage of rock roadway has become a common technical problem of every coal mine.,Ltd. has researched and developed a rock roadway roadheader that has proprietary intellectual propertyrights and advanced technology, and can meet rock roadway drivage demand in China.We have achieved breakthrough in many aspects, such as heavy rocky roadway roadhead in the overall design

Keywords: rock roadway roadhead     overall design technology     stepless speed regulation     full remote control     intelligent    

Application research of Q&P concept in hot rolled AHSS production

Yuan Guo,Kang Jian,Zhang He,Li Yunjie,Hu Hongling and Wang Guodong

Strategic Study of CAE 2014, Volume 16, Issue 1,   Pages 59-65

Abstract: process was favorable for significantly refining the microstructure and obtaining a certain amount of retained

Keywords: advanced high strength steel     Q&P     DQ&P     hot rolling     retained austenite    

An Innovative Non-Pillar Coal-Mining Technology with Automatically Formed Entry: A Case Study Article

Xingyu Zhang, Manchao He, Jun Yang, Eryu Wang, Jiabin Zhang, Yue Sun

Engineering 2020, Volume 6, Issue 11,   Pages 1315-1329 doi: 10.1016/j.eng.2020.01.014

Abstract: The field application results showed that the retained entry was under the pressure-relief zone due toAfter going through a provisional dynamic pressure-bearing zone, the retained entry entered the stability

Keywords: Non-pillar mining     Entry support     Retained entry     Rock engineering     Industrial test    

Title Author Date Type Operation

Theory and practice of integrated pillarless coal production and methane extraction in multiseams of low permeability

Yuan liang

Journal Article

A review of sustainability metrics for the construction and operation of airport and roadway infrastructure

Sarah M. L. HUBBARD, Bryan HUBBARD

Journal Article

Research on bolt-cable reducing span support technology in large span roadway of fully-mechanized coal

Zhu Yongjian,Luo Yixin,Zhang Daobing

Journal Article

Mechanical properties of vanadium-alloyed austempered ductile iron for crankshaft applications

Journal Article

Classification Model and Its Application of Stability of Roadway Driving Along Next Goaf for Fully-mechanized

Zhu Chuanqu,Wang Weijun,Shi Shiliang

Journal Article

The research and application of large power roadheader

Zhang Lansheng,Wei Jingsheng,Yang Yang,Song Yuehui

Journal Article

Application research of Q&P concept in hot rolled AHSS production

Yuan Guo,Kang Jian,Zhang He,Li Yunjie,Hu Hongling and Wang Guodong

Journal Article

An Innovative Non-Pillar Coal-Mining Technology with Automatically Formed Entry: A Case Study

Xingyu Zhang, Manchao He, Jun Yang, Eryu Wang, Jiabin Zhang, Yue Sun

Journal Article