Debris as Resources Applied in Wild Creeks Remediation Work

Abstract

In recent years, especially after typhoon Morakot, extreme torrential rain has resulted in large amounts of landslides in Taiwan. Debris that accumulated downslope blocked the drainage way and induced debris flow very often. The large amount of debris transported to wild creeks downstream may caused elevated riverbeds and channel siltation. All nearby villages and utilities are under this threat. The cleanout work of aggregated debris is of great priority after a disaster. In processing the cleanout work for wildcreek, debris can be treated as useful resources. This is very important in the watershed management and rehabilitation work. In solving the debris blockage problem, cleanout of debris so as to recover the drainage capability of watershed and at the same time, use the earth material to form the protecting measures can meet the carbon reduction requirement. Cleanout of the debris can be used in filling low-lying land in the upstream catchment area. By applying feasible methods to improve engineering properties of the debris can be used to make a variety of protective measures, to resolve the loss of land, roads, damaged buildings and other issues. In planning, the first is to consider the location and the protected object, etc., can be planned establish of embankment, bank protection, slope protection, and berms.