Risk identification of subway tunnel shield construction based on WBS-RBS method

2023 ◽  
Vol 19 (4) ◽  
pp. 1
Author(s):  
Zhiwei Zhang ◽  
Haitao Wang ◽  
Qiang You ◽  
Mingyang Xu
Keyword(s):  
Risk Identification ◽  
Subway Tunnel ◽  
Tunnel Shield

scholarly journals Study on Deformation Law of Subway Construction under Passing Existing Line in Short Distance

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Cong-Shuang Luo ◽  
Yi-Hong Cheng ◽  
Zhe Bai ◽  
Tong Shen ◽  
Xu-Yang Wu ◽  
...  
Keyword(s):  
Large Scale ◽  
Subway Tunnel ◽  
Deformation Law ◽  
Space Projects ◽  
Development And Utilization ◽  
Grouting Reinforcement ◽  
Track Surface ◽  
Shield Machine ◽  
Safety And Stability ◽  
Tunnel Shield

With the large-scale development and utilization of underground space projects, the subway-led Rail Transit Project is developing vigorously, and the safety and stability of subway under passing existing projects have become a key issue for the future. In this paper, the deformation law of subway tunnel under the existing track is studied by using the method of ROCSCIENCE software and field measurement, which is based on the construction of a new double-tunnel shield-driven subway tunnel under the existing city of pile rapid track project. In the crossing area, the distance between the top of the tunnel and the pile foundation is 6.2 m and the distance between the tunnel and the existing track surface is 19.6 m. It is required that the settlement of track caused by the new tunnel construction should not exceed 2 mm. The results show that the settlement of the existing track is greatly influenced by the new tunnel without reinforcement and grouting, and the maximum settlement is more than 9.92 mm. The settlement of the existing track can be controlled to 1.93 mm by adjusting the construction parameters of the shield machine and grouting reinforcement at different stages during construction.

The Monitoring and Analysis of Surface Subsidence of Soft Soil Rock Large Section of Subway Tunnel Shield Construction

2013 ◽  
Vol 848 ◽  
pp. 78-82
Author(s):  
Jin Kui Li ◽  
Bing Wei Yan ◽  
Yong Jian Shi
Keyword(s):  
Surface Deformation ◽  
Soft Soil ◽  
Reference Value ◽  
Lateral Position ◽  
Surface Subsidence ◽  
Subway Tunnel ◽  
Tunnel Excavation ◽  
Working Face ◽  
Shield Machine ◽  
Tunnel Shield

In this paper use the shield construction of Dalian subway 202 bid section as an example, carried out the monitoring measurement of surface subsidence and crown surface subsidence during the shield construction, detailed analysis the monitoring data, explored the characteristics and distribution of surrounding rock and surface deformation of large cross section shield construction. Construction transverse deformation has a relationship with lateral position and the tunnel excavation length. The closer from shield machine working face, the closer to the center line of the tunnel, the greater impact is. The research results have reference value for the future similar engineering design and construction.

Modern Approaches to the Teaching of Risk Scienceat a University

2020 ◽  
Vol 17 (5) ◽  
pp. 94-110
Author(s):  
V. V. Gamukin
Keyword(s):  
Rating Scale ◽  
Human Life ◽  
Risk Identification ◽  
Individual Risk ◽  
Professional Activities ◽  
Basic Competencies ◽  
Internal Rating ◽  
Rating Method ◽  
Intuitive Method ◽  
Numeric Rating

Purpose. Disclosure of the peculiarities of the organization of modern training of university students with a risky perception of reality in order to form basic competencies for future professional activities.Methods. As part of the study, the following were used: the systematization method, the structural analysis method and the numeric rating method.Results. The peculiarities of riskology training in the construction of an individual educational route are determined, in which the possibility of students independently choosing disciplines to realize their own interests in various fields of knowledge is used. Methods of obtaining risk identification skills from trainees are formulated. It is determined that using the intuitive method of risk formalization is the most accessible and expeditious way to remember the possibility of risks. The need to develop a sustainable habit of assessing risks in the future and in fact is justified. This skill is successfully developed using a numeric rating method. The need to develop an internal rating scale for each student is justified, which is useful for making decisions. Disclosed is a method of assimilating risk analysis skills in dynamics. This allows you to identify the development of forecast estimates in comparison with the fact for each individual risk and compile several risks.Conclusion. An educational experiment on the introduction of the Riskology discipline for students ofTyumenStateUniversity suggests that they have successfully overcome the stage of high risk of perception of reality that arose during the COVID-19 pandemic. The acquired knowledge and practical skills will ensure a similar perception of other events in their lives and professional activities. It is necessary to fully expand such practices and find an opportunity to supplement educational programs in universities, regardless of their orientation, with disciplines that directly reveal the nature of risk in human life and give them the ability to manage them.

Methodological bases and practice of risk management of regional development (part 1)

2020 ◽  
Vol 18 (2) ◽  
pp. 114-126
Author(s):  
Valery V. Karpov ◽  
Anna G. Breusova ◽  
Anna A. Korableva
Keyword(s):  
Risk Management ◽  
Regional Development ◽  
Regional Economy ◽  
Full Range ◽  
Risk Identification ◽  
Territorial Development ◽  
Public Authorities ◽  
Strategic Risk ◽  
Risk Committee ◽  
State Programs

The article is devoted to the theoretical foundations and analysis of the experience of subjects of the Russian Federation in the field of regional development risk management. The article examines the concept of risk, its difference and relationship with the concepts of uncertainty, threat, danger, security and others. It is determined that dangers are constantly present in the regional economy. And risk, as a measurable uncertainty with multiple outcomes, for which the probability of occurrence of a risk event is calculated, is manifested as a result of the occurrence of a hazard. When comparing the concepts of risk and security, this means that the security of the regional economy is manifested in the ability to resist threats and manage risks, and not in the complete absence of dangers. It is revealed that ISO standards distinguish between the concepts of risk management and risk management. For further discussion, risk management is understood as a systematic approach to using the full range of mechanisms available to public authorities to reduce emerging risks and threats to the socio-economic development of the region. Further, the analysis of risk management in the practice of regional management on the example of the Omsk, Novosibirsk and Tyumen regions is carried out. The relevant tools in the activities of government bodies, such as territorial development strategies, state programs and projects, were identified, which allowed us to introduce a classification of risks with the allocation of strategic, tactical risks of territorial development and project management risks, among which there is a strategic level. The analysis of the implemented tools for compliance with the mandatory stages of risk management showed mainly the absence of risk identification, unified requirements for risk accounting and systematic risk management of regional development. Among the assessed regions, the Tyumen region has the best practices in terms of risk management. For a more detailed analysis authors highlighted the key institutional and instrumental elements of risk management such as risk committee, strategic risk map, risk register, action plan for risk management, and defined logical relationships between them.

CONCEPTUALISING RISK CULTURE ON ERM IMPLEMENTATION IN CONSTRUCTION COMPANIES

2020 ◽  
Vol 17 (1) ◽  
pp. 59
Author(s):  
Ching Ching Wong
Keyword(s):  
Risk Management ◽  
Risk Identification ◽  
The Body ◽  
Risk Indicators ◽  
Construction Companies ◽  
Risk Appetite ◽  
Risk Culture ◽  
Risk Treatment ◽  
Managing Risk ◽  
The Relationship

Enterprise Risk Management (ERM) is an effective technique in managing risk within an organization strategically and holistically. Risk culture relates to the general awareness, attitudes and behaviours towards risk management in an organisation. This paper presents a conceptual model that shows the relationship between risk culture and ERM implementation. The dependent variable is ERM implementation, which is measured by the four processes namely risk identification and risk assessment; risk treatment; monitor and consult; communicate and consult. The independent variables under risk culture are risk policy and risk appetite; key risk indicators; accountability; incentives; risk language and internal relationships. This study aims to empirically test the relationship between risk culture and ERM implementation among Malaysian construction public listed companies. Risk culture is expected to have direct effects and significantly influence ERM. This study contributes to enhance the body of knowledge in ERM especially in understanding significant of risk culture that influence its’ implementation from Malaysian perspective.

Effect and acceptability of AKI education using peer review audit in primary care

2018 ◽  
Vol 68 (suppl 1) ◽  
pp. bjgp18X696977
Author(s):  
Mufaza Asrar ◽  
Joanna McKinnell ◽  
Nitin Kolhe ◽  
Lynn Woods ◽  
Sally Bassett ◽  
...  
Keyword(s):  
Primary Care ◽  
Peer Review ◽  
Secondary Care ◽  
Group Discussion ◽  
Risk Groups ◽  
Risk Identification ◽  
Care Staff ◽  
Small Group Teaching ◽  
Post Intervention ◽  
Early Management

BackgroundThis was part of the Southern Derby shire CCG AKI awareness and improved management in primary and secondary care. The programme involved educating the primary care staff (GPs nurses) about AKI, identifying and early management in at risk groups. The secondary care aspect involved protocol development for AKI risk/identification to reduce morbidity.AimAs two-thirds of AKI originates in the community we aimed to increase awareness and knowledge levels of AKI in primary care via a CCG wide education programme. This included nephrology a peer review audit of cases with an evaluation of the programme’s acceptability and impact.MethodOver a 12month period, peer review audit sessions were delivered to GPs and the primary care MDT. These sessions consisted of a short presentation by a consultant nephrologist followed by discussion of cases. Qualitative feedback was collected from all participants. Web-based, CCG-wide questionnaires incorporating factual and clinical questions were used to assess baseline and post-intervention knowledge level.Results93% of participants (94 responses) found the peer review audit sessions useful, particularly the presence of nephrologist. 45% of participants were anxious about group discussion of cases, although 36% thought they were the most useful component of the sessions. Formal presentations were ranked as the most popular format of receiving education. 996 individuals completed the questionnaires. At baseline 61% were GPs, 27% practice nurses and 8% Advanced Practitioners, with similar proportions at 1yr. Exposure to AKI teaching, self-reported awareness and confidence levels were higher in the second questionnaire and there was a significant improvement in test scores.ConclusionPrimary care education can improve knowledge and awareness of AKI. Small group teaching with involvement of a nephrologist was popular. These results suggest that there is a need to tailor education styles to individual preferences, and peer review audit may not be universally acceptable in primary care.

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