scholarly journals Analysis on Operation Risk of Continuous Sunken Tunnel on Expressway

2021 ◽  
Author(s):  
Sheng Zhao ◽  
Yijia Wang ◽  
Yujian Xi ◽  
Yangyuyu Xia ◽  
Jiaming Lu

Based on the number of 519 tunnel risk incidents that occurred in the two tunnels of the Qifu Tunnel and the Zhongcun Tunnel during the period from 2018 to 2019 of Guangming Expressway, this paper studies the temporal and spatial characteristics and the risk distribution of the sunken continuous tunnel during the operation period of the expressway. Type of risk event. The results show that January, May, June and September of the year, as well as 14:00–16:00 and 16:00–18:00 during the day are periods of high tunnel risk; at the entrance section of continuous tunnels, Compared with other locations, the number of risk events in the transition section and the open section with sudden environmental changes and gradient changes is more; the types of risk events include safety hazards, roadblocks, vehicle failures, rear-end collisions, and equipment failures. The main types are vehicle failures. There are certain differences in the east-west direction. There are more vehicle breakdowns in the east-bound direction, more roadblocks in the west-bound direction, and more rear-end collisions in the east-bound direction. The main types of risk events are cars and trucks. Both cars and trucks have major risk event types. It is a vehicle failure. In rear-end collisions, small cars account for 65% of the risk models; risk identification methods include gun patrol discovery, road administration reporting, etc., of which gun patrol discovery is the most important identification method, accounting for 65% of the total. Through the analysis of the risk event characteristics of the sunken continuous tunnel of the expressway, it provides reference opinions for perfecting the research deficiencies in related fields in our country.

2013 ◽  
Vol 739 ◽  
pp. 673-677
Author(s):  
Guo Ping Cheng ◽  
Di Tang ◽  
Bei Bei Liu

Based on the study of basic risk identification method, this paper analyzes domestic factoring risk identification methods and puts forward the basic model based on business process of domestic factoring risk identification, then provides the new ideas for risk identification, the paper lays the foundation to domestic factoring risk evaluation and control system, so it is good to construct a complete, standard domestic factoring risk management system.


2019 ◽  
Vol 29 (4) ◽  
pp. 461-467
Author(s):  
Karen L. Panter ◽  
Timmothy M. Gergeni ◽  
Casey P. Seals ◽  
Andrea R. Garfinkel

High tunnels are gaining popularity for their use in horticultural crop production. However, little is known about the effect of high tunnel orientation on plant growth and development. In this set of studies, we show tunnel orientation does not necessarily affect the production of cut sunflower (Helianthus annuus) and culinary herbs oregano (Origanum vulgare), marjoram (Origanum majorana), and garlic chive (Allium tuberosum). Two high tunnels, one with the long axis oriented north-south (NS) and the other east-west (EW), were used to test the effects of high tunnel orientation on several crops over a 5-year period: cut sunflower (2012 and 2016); marjoram, oregano, and garlic chive (2013 and 2014); and garlic chive (2015). The tunnels are 12 × 16 ft, smaller than those used in commercial production. The size would be appropriate for hobby and seasonal production of horticultural crops for local markets. Cut sunflower stems were similar lengths both years in both high tunnels. Sunflower times to harvest were different between cultivars but not between high tunnels. Oregano fresh weight yields were highest in the NS tunnel in 2013 but similar between tunnels in 2014. Marjoram fresh weights were highest in 2013 in the EW tunnel but highest in 2014 in the NS tunnel. Garlic chive fresh weights were similar between tunnels all 3 years. We show that differences are more a function of innate cultivar characteristics than which way small high tunnels are oriented.


Author(s):  
Kristie L. Ebi ◽  
Frances Harris ◽  
Giles B. Sioen ◽  
Chadia Wannous ◽  
Assaf Anyamba ◽  
...  

Human health and wellbeing and the health of the biosphere are inextricably linked. The state of Earth’s life-support systems, including freshwater, oceans, land, biodiversity, atmosphere, and climate, affect human health. At the same time, human activities are adversely affecting natural systems. This review paper is the outcome of an interdisciplinary workshop under the auspices of the Future Earth Health Knowledge Action Network (Health KAN). It outlines a research agenda to address cross-cutting knowledge gaps to further understanding and management of the health risks of these global environmental changes through an expert consultation and review process. The research agenda has four main themes: (1) risk identification and management (including related to water, hygiene, sanitation, and waste management); food production and consumption; oceans; and extreme weather events and climate change. (2) Strengthening climate-resilient health systems; (3) Monitoring, surveillance, and evaluation; and (4) risk communication. Research approaches need to be transdisciplinary, multi-scalar, inclusive, equitable, and broadly communicated. Promoting resilient and sustainable development are critical for achieving human and planetary health.


2018 ◽  
pp. 1318-1336
Author(s):  
Martina Huemann ◽  
Claudia Ringhofer

The chapter describes the importance of balancing risk reduction and “taken risks” and what role a holistic risk identification plays in the context of Sustainable Development (SD). It provides a theoretical background on SD, Risk Management and the Environmental Impact Analysis (EIA). It discusses the implementation of SD in the EIA as one example for a holistic risk identification. The link between SD and risk management is discussed and the identified learning potentials for further developing traditional risk identification methods are explained. A risk identification explicitly considering SD as well as considering project and stakeholder risks is presented within a case study. The case study project is Engineering, Procurement and Construction (EPC) of a wind park farm in Brazil from the supplier perspective. Based on SD both, the risks of the project as well as the risks of the project stakeholders are considered. Whereby the chapter shares the risk identification as such as well as the process for which a systemic board constellation was applied.


Author(s):  
Martin Hromada ◽  
David Rehak ◽  
Neil Walker

In general, energy infrastructure is a basic but very complex system of elements, interconnections, functional inputs and outputs, which creates the need to break down subsystems, systems, and infrastructure areas. The aim of this chapter is therefore to discuss the possible implementation of approaches to risk assessment and risk management in relation to the application of technical security measures. This chapter of the book will therefore discuss risk analysis methods where the transition from general approaches to risk analysis, through risk identification methods and procedures and the assessment of major industrial and technological risks, to specific risk analysis methodologies for electricity infrastructures, will be presented. An important part of the chapter is also the introduction of practical approaches and methodologies that are accepted as “best practices” in connection with ensuring the technical security of electricity infrastructures.


2012 ◽  
Vol 594-597 ◽  
pp. 1993-1997 ◽  
Author(s):  
Yan Ye ◽  
Guang Wen Ma ◽  
Yuan Bo Zhang

There are many uncertain factors in the process of reservoir’s operation. For the reasons, the "deterministic theory" must turn to" probability theory", and it becomes necessary to strengthen risk analysis. Summarize the connotation of reservoir risk analysis, progress in research of risk analysis for reservoir inflow forecasting, risk analysis for reservoir operation, risk analysis for flood protection and flood discharge , and reservoir multi-objective risk analysis. There are so much influence factors and much of them uncertainly, not enough research on multiple targets and multiple factors, not much apply on new risk analysis theories and methods. Therefore, it should research more on the fields of risk identification, reducing the impact of human factors, new analysis methods and coupling methods.


Sign in / Sign up

Export Citation Format

Share Document