详情

Quantifying Impact of Rockfall on Mobility of Critical Transportation Corridors

项目名称：	Quantifying Impact of Rockfall on Mobility of Critical Transportation Corridors
摘要：	Critical transportation corridors are essential for community well-being, resilience, commerce, and tourism. The mountainous states of Alaska, Washington, Idaho, and Oregon rank among the top five states by topographic relief, with transportation corridors located in areas of significant geohazards. These hazards include landslides, rockfall, debris flows, frozen debris lobes, or slope instability due to thawing permafrost. Rockfalls and rockslides recently closed major highways in Alaska, Washington, and Oregon. During road closures, motorists and freight traffic are required to utilize limited, significantly lengthier alternative routes, which quickly become congested with increased traffic safety and efficiency. Moreover, mitigation, maintenance, and repair can take weeks to months. Understanding the frequency and magnitude of geohazards affecting transportation is the goal of this research. The research team is building a practical, data-driven framework to assess the impacts of rockfall and debris slides on highway mobility. This data and framework can aid planners, engineers, and managers with tools to make better-informed, quantitative decisions regarding mitigation and potential closures for repairs and maintenance. Specifically, the team is working towards the following with the data-drive framework: Rockfall Impacts on Mobility (RIM) database focused on the quantification of mobility impacts from rockfalls. Utilizing data-mining techniques, the team is building a database of unstable slopes. Data sources include historical records and trending news. Important to this database is mobility information such as closure times or mitigation strategies (rerouting). Develop fragility curves relating rockfall and debris volume with closure times. The risks that rockfall pose to mobility of critical corridors will be established through the development of fragility curves relating rockfall debris volume and highway closure and detour times using data available from cooperators at Oregon Department of Transportation (ODOT), Washington DOT (WSDOT), and Alaska DOT (AKDOT). Assess the effectiveness of slope mitigation techniques quantitatively and rigorously. In previous PacTrans research, the team developed detailed morphologic databases for sites that have been mitigated, and those adjacent sites that have not. Standards for mitigation techniques, such as �scaling� are often implemented and performed based on subjective judgement. Closure during these mitigation efforts can significantly impact mobility. The data-driven approach will incorporate site data and mitigation strategies on corridor closures and impacts. This framework will provide planners with the necessary tools to make better-informed, quantitative decisions about mitigation and potential closures.
状态：	Active
资金：	360000
资助组织：	Office of the Assistant Secretary for Research and Technology
管理组织：	University of Alaska Fairbanks
项目负责人：	Cunningham, Keith
执行机构：	University of Washington, Seattle
主要研究人员：	Wartman, Joseph
开始时间：	20180816
预计完成日期：	20200815
实际结束时间：	0