U.S.-Philippines SGER Planning Visit: Reconnaissance Survey of the February 17 2006 Leyte, Philippines, Landslide

美国-菲律宾 SGER 计划访问：对 2006 年 2 月 17 日菲律宾莱特岛山体滑坡进行勘察

• 批准号: 0630446
• 负责人: Vernon Schaefer
• 金额: $ 4.99万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2008-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0630446&HistoricalAwards=false
• 关键词: U.S.; Philippines; SGER; Planning; Visit

Schaefer0630446This award supports a project to enable Dr. Vernon Schaefer of the Iowa State University in Ames and Dr. Marte Gutierrez of the Virginia Polytechnic Institute in Blacksburg to meet with Dr. Gil Cardiel in the School of Earth and Material Science at Mapua Institute of Technology in Manila, Philippines. They plan to undertake a reconnaissance survey of the February 17, 2006 Southern Leyte, Philippines landslide. This landslide was one of the most significant to have occurred in the world over the past several decades. The town of Guinsaugon located at the foot of Mt. Can-abag with a population of about 1,857 was completely inundated by the slide debris and at least 1,328 persons are missing and presumed dead. The slide followed extensive rain with an accumulated rainfall of 674 mm from February 8 to 17, which is about five times higher than during normal rainy seasons. Unlike most landslides where a block-like failure occurs, this was a mud/debris flow where massive amounts of material flowed downhill at an incredible speed. Because so many areas of the world are prone to landslides like this, it is important to gather information about each major event. The United States has considerable losses from landslides each year. The survey will consist of geological mapping, surveying and characterization of the scarp and the debris, in situ testing and soil/rock sampling. The survey will be facilitated by the use of advanced technologies such as Global Positioning System (GPS), digital photogrammetry, LIDAE and portable testing devices. Soil and rock classification and laboratory tests for index, physical properties, permeability and shear strength will be carried out on samples to be collected from the site. Finally, 3D slope stability analysis will be performed to back-calculate shear strength and water conditions in the site, and to predict future movements at the site. A particular benefit expected from the project is improving the understanding of rainfall-induced slope failures in partly saturated weathered and fractured rock masses. The study will also help improve the understanding of the geological effects of severe weather conditions due to global warming. Determining the causes for the landslide could lead to predictive techniques that can be used to identify other areas where landslides are likely, and ways to identify critical factors that trigger this type of landslide. In addition the PIs will endeavor to make presentations in schools, civil defense and emergency management and other government officials to explain catastrophic slope failures and what can be done to reduce their occurrence and mitigate their impact. In addition, several US graduate students will be involved in the project and will be working in demanding conditions and environments in remote areas of the Philippines. It is anticipated that, following this project, the US and Philippine researchers will continue long-term collaborations in this important geohazards research area.

Schaefer 0630446该奖项支持一个项目，使艾姆斯的爱荷华州州立大学的弗农·谢弗博士和布莱克斯堡的弗吉尼亚理工学院的Marte Gutierrez博士能够在菲律宾马尼拉的马普阿理工学院的地球与材料科学学院与Gil Cardiel博士会面。 他们计划对2006年2月17日菲律宾南莱特滑坡进行勘察。 这次滑坡是过去几十年来世界上发生的最重大的滑坡之一。 Guinsaugon镇位于山脚下。人口约1，857人的Can-abag完全被滑坡碎片淹没，至少有1，328人失踪，据推测已经死亡。 此次滑坡是在大范围降雨之后发生的，2月8日至17日期间累计降雨量为674毫米，约为正常雨季的五倍。 与大多数发生块状破坏的山体滑坡不同，这是一种泥浆/泥石流，大量的物质以令人难以置信的速度向下流动。 由于世界上有如此多的地区容易发生这样的山体滑坡，因此收集有关每个重大事件的信息非常重要。 美国每年都有相当大的滑坡损失。 调查将包括地质测绘、陡坎和碎片的测量和定性、现场测试和土壤/岩石取样。 将利用全球定位系统、数字摄影测量、激光数字摄影和AE以及便携式测试设备等先进技术，为调查提供便利。 对现场采集的样品进行土石分类，并进行指标、物理性质、渗透性和抗剪强度的室内试验。 最后，将进行三维边坡稳定性分析，以反算现场的抗剪强度和水条件，并预测现场的未来运动。 预计该项目的一个特别好处是提高了对部分饱和风化和破碎岩体中岩石引起的边坡破坏的认识。 这项研究还将有助于提高对全球变暖导致的恶劣天气条件的地质影响的认识。 确定滑坡的原因可能会导致预测技术，可用于确定其他可能发生滑坡的地区，以及确定触发这种类型滑坡的关键因素的方法。 此外，PI将奋进在学校，民防和应急管理以及其他政府官员中进行演讲，以解释灾难性的边坡破坏以及可以采取哪些措施来减少其发生并减轻其影响。 此外，几名美国研究生将参与该项目，并将在菲律宾偏远地区的苛刻条件和环境中工作。 预计，在该项目之后，美国和菲律宾的研究人员将继续在这一重要的地质灾害研究领域进行长期合作。