尾砂库地震砂土液化判别与分析——以铜陵市水木冲尾砂库为例

尾砂是选矿分选作业的产物之一,通过堆积处理形成的尾砂库是重大危险源。尾砂库在地震作用下极易出现液化现象,导致库体失稳,出现溃库风险。以铜陵市水木冲尾砂库为例,采用标准贯入法、静力触探法和剪切波速判断法分析尾砂库地震砂土液化,结果表明饱和尾粉砂和尾细砂易在地震作用下产生液化。提出有关建议对策,对提高城市抗震设防工作有实际意义。

Discrimination and analysis of seismic sand liquefaction of tailings reservoir: A case study of Shuimuchong tailings reservoir in Tongling city

Tailings are one of the products of ore dressing and sorting operations.The formation of tailings reservoirs through accumulation treatment is a major source of danger.The tailings reservoirs are prone to liquefaction under the action of earthquakes,leading to instability of the reservoir and the risk of reservoir collapse.Taking the Shuimuchong tailings reservoir in Tongling city as an example,the standard penetration method,static cone penetration method and shear wave velocity judgment method are used to analyze the seismic sand liquefaction of the tailings reservoir,and the data is analyzed,and relevant suggestions are put forward.It is of practical significance to improve the seismic fortification of cities.