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Geotechnical profiling of a surface mine waste dump using 2D Wenner–Schlumberger configuration
Open Geosciences ( IF 2 ) Pub Date : 2021-01-01 , DOI: 10.1515/geo-2020-0234
Supandi Supandi 1
Affiliation  

Mapping the subsurface in slope stability analysis of disposal areas is difficult, especially the disposal layering materials that are assumed to be homogeneous instead of their real conditions. Moreover, the hoarding activities on high slope form layers based on the nature of the rock mechanics with large materials or boulders rolling down to the toe of the slope, while small ones are held at the top. Each layer formed, however, has certain geotechnical characteristics. The aim of this study is to determine the profiling of disposal material using a geoelectrical method known as Wenner–Schlumberger configuration with a line length of 450 m and also to find the resistivity value for mine waste materials based on an empirical number, which is a number that is obtained from the result reading compared to the actual condition in the field. The study was conducted on an in-pit dump with an estimated height of 150 m and a thickness of 50 m, and the data obtained were processed using RES2DINV software. The results showed that the subsurface cross-section has three layers consisting of bedrock with a resistivity of 50–70 Ωm, contact zone with 30–50 Ωm, and disposal material layer with 1–30 Ωm, which can be used for the slope stability analysis. This concept is very helpful for the geotechnical analysis on high mine waste dumps or sloping basement zone. This study focuses on the resistivity value for waste dump materials, which has not been clearly mentioned in the previous studies.

中文翻译:

使用2D Wenner–Schlumberger配置对露天矿废物场进行岩土工程剖析

在处理区的边坡稳定性分析中很难绘制地下图,尤其是假定处理层材料是均匀的,而不是其实际条件。此外,在高边坡上的the积活动根据岩石力学的性质形成层,其中大的材料或巨石滚落到边坡的脚趾,而小的则保持在顶部。但是,形成的每一层都具有某些岩土特征。这项研究的目的是使用线长为450 m的地电方法(称为Wenner–Schlumberger配置)来确定处置材料的轮廓,并根据经验值找到矿山废料的电阻率值,该值为从结果读取中获得的数字与该字段中的实际条件进行比较。该研究是在一个估计高度为150 m,厚度为50 m的露天矿场中进行的,所获得的数据使用RES2DINV软件进行处理。结果表明,地下断面分为三层,分别为电阻率50–70Ωm的基岩,接触层30–50Ωm和1–30Ωm的处理材料层,可用于提高边坡稳定性。分析。该概念对于高矿山垃圾场或倾斜的地下室区域的岩土工程分析非常有帮助。这项研究的重点是废物堆放材料的电阻率值,在先前的研究中并未明确提及。结果表明,地下断面分为三层,分别为电阻率50–70Ωm的基岩,接触层30–50Ωm和1–30Ωm的处理材料层,可用于提高边坡稳定性。分析。该概念对于高矿山垃圾场或倾斜的地下室区域的岩土工程分析非常有帮助。这项研究的重点是废物堆放材料的电阻率值,在先前的研究中并未明确提及。结果表明,地下断面分为三层,分别为电阻率50–70Ωm的基岩,接触层30–50Ωm和1–30Ωm的处理材料层,可用于提高边坡稳定性。分析。该概念对于高矿山垃圾场或倾斜的地下室区域的岩土工程分析非常有帮助。这项研究的重点是废物堆放材料的电阻率值,在先前的研究中并未明确提及。
更新日期:2021-01-01
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