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原文传递 Web-Based Monitoring of Piezometers for the U.S. Army Corps of Engineers Moose Creek Dam, North Pole, Alaska.

题名：	Web-Based Monitoring of Piezometers for the U.S. Army Corps of Engineers Moose Creek Dam, North Pole, Alaska.
作者：	Gelvin, A. B.; Williams, C. R.; Saari, S. P.
关键词：	Piezometers, Remote sensing, Groundwater, Earth dams, Erosion, Seepage, Alaska, Rivers, Flood control, Pressure, Antennas, Radio equipment, Radio frequency, Lessons learned, Computer programs, Energy consumption, Water table, Chena river (alaska), Moose creek dam (alaska), Data-logging systems, Power budgets, Rf (radio frequency), Rf link budgets, Fade margins
摘要：	The Moose Creek Dam, completed in 1979, is a 7.5-mile long earthen dam located in North Pole, Alaska designed to protect the Fairbanks and North Pole areas from flooding by regulating flow on the Chena River. The earth-filled embankment and a concrete control structure regulates flow with four gated bays. In 2014, two minor flood events took place within 1 month of each other. Flood observations discovered over 1,000 pin/small sand boils down-stream of the stability berm, which could signify the initiation of backward erosion and piping with a vertical exit through the boil. The location of greatest distress was mostly within areas of permafrost, some of which have degraded since the dams construction. During operation, groundwater levels are measured manually at more than 150 piezometers. In 2018, the Corps of Engineers Alaska District tasked the Cold Regions Research and Engineering Laboratory (CRREL) to automate-groundwater levels measurement by installing 21 piezometers. CRREL added instrumentation and monitoring to a network system that aggregates all data. The web-based monitoring system provides a new tool that allows remote Corps personnel to monitor groundwater levels and seepage in areas of significant concern and receive notifications of developing distress during a flooding event.
报告类型：	科技报告