外文翻譯---電阻率測量瑞典南部的enemossen尾礦壩的安全評價

1、Using resistivity measurements for dam safety evaluation at Enemossen tailings dam in Southern SwedenInternal erosion is a major Reason for embankment dam failures. Resistivity measurements is an essentially non-destruct

2、ive technique, which may have the possibility of detecting internal erosion processes and anomalous seepage at an early stage before the safety of. The dam is at stake. This paper presents results from part of a dam Safe

3、ty investigation conducted at the Enemossen tailings dam in southern Sweden. Longitudinal resistivity sections, 2D measurements along the dam crest, provided an overview of the whole dam and served to detect Anomalous zo

4、nes. In selected areas, additional cross-sectional 2D surveys gave detailed information about the geoelectrical situations in the embankments. This information is valuable for similar investigations as information about

5、resistivity in embankment construction material is scarce. Known problem areas were associated with low resistivities, even though the resistivity measurements alone did not provide enough information to confidently come

6、 to a decision about the status of the dams.Embankment dams are made of earth or rock. Internal erosion is one of the major causes of embankment dam failures. Resistivity measurements may have the possibility of detectin

7、g internal erosion geophysical methods are of this kind. Among the methods tested, resistivity measurements were considered the most successful. A general overview of all measurements, as well as a more detailed descript

8、ion of the dams, is given by Salmon and Johansson (2003).In recent years much effort has been put into dam safety work in Sweden. During the same time a number of incidents involving tailings dam have occurred, which hav

9、e increased consciousness among the public and the authorities. As a consequence, strong focus has also been put on dam safety for tailings dam. Eight large tailings dams were in operation in Sweden in 2003, and an addit

10、ional one commenced in 2004.Three of them have been subjected to uncontrolled erosion through the dam body or the foundation over the last 10-yearperiod, and one of these incidents developed to a complete failure (Bencke

11、rt2003).When the electrical properties of the tailings distinguish from the surrounding materials, resistivity measurements can be used to assess leakage and propagation for environmental purposes. This type of investiga

12、tions has been conducted many times as regard to mine drainage (e.g. Abraheemetal. 1990; Buselli and Lu 2001; Yuval andoldenburg 1996).The technique is similar to the one used to detect leakage from land fills. Using res