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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-lining, and automated monitoring system was created.With 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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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 shaftlining is very high.Therefore 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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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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Damage on lining concrete in highway tunnels under combined sulfate and chloride attack

Rongrong YIN, Chenchen ZHANG, Qing WU, Baocheng LI, He XIE

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 331-340 doi: 10.1007/s11709-017-0421-y

Abstract: The combined effect from sulfate and chloride is one of the important reasons to cause the damage of liningTo investigate the effect of chloride ions on the corrosion of lining concretes under sulfate attack,XRD patterns confirmed that the existence of chloride certainly depressed the corrosion damage on the lining

Keywords： lining concrete     sulfate     chloride     compression     ultrasonic    

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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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Deep convolutional neural network for multi-level non-invasive tunnel lining assessment

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 2,   Pages 214-223 doi: 10.1007/s11709-021-0800-2

Abstract: paper proposes a multi-level strategy, designed and implemented on the basis of periodic structural monitoring

Keywords： concrete structure     GPR     damage classification     convolutional neural network     transfer learning    

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Application of coupled XFEM-BCQO in the structural optimization of a circular tunnel lining subjected

Nazim Abdul NARIMAN, Ayad Mohammad RAMADAN, Ilham Ibrahim MOHAMMAD

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1495-1509 doi: 10.1007/s11709-019-0574-y

Abstract: XFEM-BCQO) is adopted to quantify the optimum values of four design parameters for a circular tunnel liningThe parameters are: tunnel lining thickness, tunnel diameter, tunnel lining concrete modulus of elasticityand tunnel lining concrete density.Numerical simulations of the tensile damage in the tunnel lining due to a real earthquake in the literaturecoupled approach manifested a significant capability to predict the cracks and spalling of the tunnel lining

Keywords： ovaling deformation     monte carlo sampling     XFEM-BCQO     maximum principal stress    

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Digital microfluidics: A promising technique for biochemical applications

He WANG, Liguo CHEN, Lining SUN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 510-525 doi: 10.1007/s11465-017-0460-z

Abstract:

Digital microfluidics (DMF) is a versatile microfluidics technology that has significant application potential in the areas of automation and miniaturization. In DMF, discrete droplets containing samples and reagents are controlled to implement a series of operations via electrowetting-on-dielectric. This process works by applying electrical potentials to an array of electrodes coated with a hydrophobic dielectric layer. Unlike microchannels, DMF facilitates precise control over multiple reaction processes without using complex pump, microvalve, and tubing networks. DMF also presents other distinct features, such as portability, less sample consumption, shorter chemical reaction time, flexibility, and easier combination with other technology types. Due to its unique advantages, DMF has been applied to a broad range of fields (e.g., chemistry, biology, medicine, and environment). This study reviews the basic principles of droplet actuation, configuration design, and fabrication of the DMF device, as well as discusses the latest progress in DMF from the biochemistry perspective.

Keywords： digital microfluidics     electrowetting on dielectric     discrete droplet     biochemistry    

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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 andmonitoring of the construction process is necessary.Feedback monitoring is an important method to ensure the construction safety.Base on the background of Benxi Dataigou Iron Mine's ultra-deep shaft with diameter of 6.5 m, depth

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 theconstruction of cutter structure transformation under complex boundary conditions for large-diameter shield shaftPractice 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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Progress in Study of Standard Room/Corner Fire Test of Lining Materials on Enclosure

Yang Yun,Zhang Heping,Liu Jiyang

Strategic Study of CAE 2003, Volume 5, Issue 4,   Pages 55-60

Abstract: It's mainly used to evaluate lining materials on enclosure.progress in study on fire behavior of linings, which is under this method，including the researches of liningFurthermore, the application of results on the classification and fire hazard evaluation of lining materials

Keywords： lining materials     full-scale     ISO 9705     room/corner fire test    

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Fludarabine and intravenous busulfan conditioning with post-transplantation cyclophosphamide for allogeneic peripheral stem cell transplantation for adult patients with lymphoid malignancies: a prospective single-arm phase II study

Ling Wang, Lining Wang, Xing Fan, Wei Tang, Jiong Hu

Frontiers of Medicine 2021, Volume 15, Issue 1,   Pages 108-115 doi: 10.1007/s11684-019-0730-8

Abstract: Post-transplantation cyclophosphamide (PT-Cy) alone or in combination with other immunosuppressive drugs has emerged as a promising strategy in the setting of allogeneic hematopoietic stem cell transplantation. Improved survival rate was reported in lymphoid malignancies following PT-Cy strategy compared with myeloid disease in non-myeloablative bone marrow transplant setting. Thus, we aimed to evaluate the safety and efficacy of PT-Cy combined with cyclosporine as graft-versus-host disease (GVHD) prophylaxis after myeloablative conditioning and T cell-replete peripheral stem cell transplantation in lymphoid malignancies. This single-arm phase II clinical trial (NCT01435447) involving 31 adult patients was conducted from January 2013 to June 2018. The donor-type neutrophil engraftment rate was 100%, and the overall incidence of grade II to IV and grade III to IV acute GVHD was 39% and 24%, respectively. The cumulative incidence rates of chronic GVHD (35%), including moderate to severe forms (10%), were reduced compared with those of the historical group ( =0.03 and =0.04, respectively). With a median follow-up of 18 months, the estimated 2-year overall and event-free survival was 64.8% (95% confidence interval: 47.8%–86.7%) and 58.4% (95% CI: 41.9%–81.7%), respectively. The 2-year cumulative incidence rate of relapse was 19.5% (95% CI: 9.0%–35.8%), whereas the non-relapse mortality rate was 21.8% (95% CI: 11.3%–38.1%). These results demonstrated the feasibility of PT-Cy as GVHD prophylaxis in this clinical setting. This strategy could significantly reduce the incidence of chronic GVHD and its moderate to severe forms but not of acute GVHD and results in similar survival outcomes compared with the historical group. A prospective study with additional patients is warranted to confirm the role of PT-Cy in lymphoid malignancy.

Keywords： post-transplantation cyclophosphamide     allogeneic hematopoietic stem cell transplantation     lymphoid malignancies    

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Prototype test study on mechanical characteristics of segmental lining structure of underwater railway

He Chuan,Feng Kun,Yan Qixiang,Qi Chun

Strategic Study of CAE 2012, Volume 14, Issue 10,   Pages 65-72

Abstract: Guangzhou Zhujiang River Shiziyang shield tunnel, the prototype test is carried out against its segmental liningAnd the mechanical characteristics of segmental lining structure using straight assembling and staggeredThe results show that the mechanical characteristics of segmental lining structure vary from different

Keywords： underwater railway shield tunnel     segmental lining structure     prototype test     tenon joint     failure characteristics    

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Title Author Date Type Operation

Stress observation of shaft lining wall during construction and initial operation

Wen Dehua

Journal Article

Assessment of Mechanical Characteristic for Reinforced Concrete Precast Arc Shaft Lining

Rong Chuanxin,Wang Xiuxi,Cheng Hua

Journal Article

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

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Journal Article

Damage on lining concrete in highway tunnels under combined sulfate and chloride attack

Rongrong YIN, Chenchen ZHANG, Qing WU, Baocheng LI, He XIE

Journal Article

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

Zeng Xiantao,Guo Jinpu

Journal Article

Deep convolutional neural network for multi-level non-invasive tunnel lining assessment

Journal Article

Application of coupled XFEM-BCQO in the structural optimization of a circular tunnel lining subjected

Nazim Abdul NARIMAN, Ayad Mohammad RAMADAN, Ilham Ibrahim MOHAMMAD

Journal Article

Digital microfluidics: A promising technique for biochemical applications

He WANG, Liguo CHEN, Lining SUN

Journal Article

Monitor and control of ultra deep shaft safety and efficient construction

Shen Weian,Liang Hengchang,Zhao Guangsi

Journal Article

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

Zhang Wenxin and Zou Chong

Journal Article

Construction technology of well shaft tower construction engineering

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

Journal Article

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

Wang Zhenfei,He Feng,He Shanning

Journal Article

Progress in Study of Standard Room/Corner Fire Test of Lining Materials on Enclosure

Yang Yun,Zhang Heping,Liu Jiyang

Journal Article

Fludarabine and intravenous busulfan conditioning with post-transplantation cyclophosphamide for allogeneic peripheral stem cell transplantation for adult patients with lymphoid malignancies: a prospective single-arm phase II study

Ling Wang, Lining Wang, Xing Fan, Wei Tang, Jiong Hu

Journal Article

Prototype test study on mechanical characteristics of segmental lining structure of underwater railway

He Chuan,Feng Kun,Yan Qixiang,Qi Chun

Journal Article