Investigation of the Liquefaction Potential of Coal Ash Due to Seismic Loading

IF 0.6 Q4 ENGINEERING, CIVIL
I. Slávik
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引用次数: 0

Abstract

Abstract Coal ash is a geomaterial with a metastable structure. This type of geomaterial is significantly susceptible to liquefaction as a result of seismic loads. An investigation of ash that is susceptible to liquefaction due to a seismic load can use the CPT penetration test. This method of investigating liquefaction was developed based on numerous penetration tests of sandy or silty–sandy soils and was developed at the Workshop on the Evaluation of Soil Liquefaction Resistance, NCEER, Salk Lake City, Utah, USA, 1996. In the present article, the results of the CPT penetration test conducted at the Rosina ash tailings pond in Žilina in Slovakia, are analyzed using the NCEER methodology. The safety factor for ash liquefaction was expressed based on the penetration resistance values measured in the CPT tests using the ‘LiquefyPro’ software. The safety factor in the liquefaction of the ash sediment was expressed by changing the level of seeping water in the body of the tailings pond, the unit weight of coal ash, and the seismic acceleration.
粉煤灰在地震荷载作用下的液化潜力研究
摘要粉煤灰是一种具有亚稳态结构的岩土材料。由于地震荷载,这种类型的土工材料极易液化。对因地震荷载而易液化的灰的调查可以使用CPT渗透试验。该液化调查方法是在砂质或粉砂质土壤的大量渗透试验的基础上开发的,并在1996年美国犹他州索尔克湖市NCEER土壤液化阻力评估研讨会上开发。本文采用NCEER方法对在斯洛伐克日利纳的罗西纳灰尾矿库进行的CPT渗透试验结果进行了分析。灰液化的安全系数是根据CPT试验中使用“LiquefyPro”软件测得的渗透阻力值表示的。粉煤灰液化的安全系数通过改变尾矿库体内的渗水位、粉煤灰的单位重量和地震加速度来表示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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21
审稿时长
29 weeks
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