| 摘要: | According to the investigations performed in 1998, there were 272 waste landfill sites in Taiwan. More than half of the sites were located on the hillside, coast, or riverside where they were prone to nature disasters. From 1996 to 2000, landfill incidents resulted in casualties directly and also had negative effect on economic, environment, society and ecology indirectly.
Using the data collected after six major natural disasters in recent years (1996 - 2000) , we investigated the effects of those disasters and analyzed the damages inflicted on facilities of landfill sites. Seventy percent of those damages were done to the main constructions, and the storage facilities were hit the worst, 34%. The rest were road structures (17%), synthetic liners (14%), leachate treatment facilities (8%), storm water collections and drainage systems (7%), respectively. According to the meteorological and geological data of those natural disasters, the damage factors were typhoon and rainfall intensities and earthquake magnitude. The stronger the intensity of the typhoons and rainfalls were, the more damages to the landfills were. The main damages were inflicted on the retaining wall. According to the analysis of the damages resulted from 921 earthquake, we have learned that earthquake magnitude 5 and over can damage landfill sites that are located in a fault or its surrounding areas.
In our analysis, most of the damaged landfill sites, 60%, were found to be located on the hillside, 21% were on the coast or riverside and the remaining 19% on the plain. There were incidents, which occurred to landfill sites under construction, in use or, closed, and before, during and after typhoon attacks. The potential hazard factors of landfill sites include location, distribution, usage life, landfill depth, landfill capacity, and timing of a disaster. Our analysis clearly indicates that for landfill sites struck by disasters, damages are accumulative and chain reactive; moreover, the potential hazard factors can still exist after the landfill sites are recovered. Therefore, enhanced maintenance and preventive measures carried out in normal days are far more important than repairing the hardware after a disaster strikes us. |
如有問題歡迎與系統管理員聯繫 
