利用地球物理技术估算尼日利亚南部尼日尔三角洲部分地区所选社区的砂矿床变化情况

IF 2 4区 地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY
Esi Emmanuel Oghenevovwero , Akpoyibo Ogheneovo , Nwankwo Rufus Chigozie , Vwavware Oruaode Jude
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引用次数: 0

摘要

细砂和粗砂是建筑施工中最重要的原材料。许多钻探工作都是在没有适当地下信息的情况下进行的,造成了资源和时间的浪费。地球物理方法可提供地下岩性信息,从而成功定位区域。因此,本研究对地下沉积物进行了地球物理调查,以确定细砂/粗砂的数量或具有可开采细砂/粗砂的区域,在开采(疏浚)之前,利用斯伦贝谢配置、偶极子-偶极子(2D)和测井技术,在尼日利亚三角洲州 Okpe 和 Ughelli North LGA 的部分地区进行开采(疏浚),以利于开发和发展。这项工作是通过评估研究地区细沙/粗沙的地质电成层深度和厚度来完成的。应用斯伦贝谢阵列获得了七次垂直电测深(VES)、七次二维测深和三次测井,以评估研究区域内砂矿的可行性。这些技术具有探测近层地层的重要分辨率。通过使用 WIN RESIST 和 Dipro 软件进行部分曲线匹配和计算机迭代,对从实地获得的数据进行了说明,以获得显示四至六层的测深曲线。这些地层包括表土、红土粘土和粘土质砂、细砂沉积、中粗粒砂和粗砂。阿格巴霍的 VES 站点中的细沙/粗沙厚度为 18.0 至 55.6 米,电阻率范围为 223.7 至 572.9 Ωm;奥苏比的细沙/粗沙厚度为 13.5 至 59.9 米,电阻率范围为 211.9 至 891.0 Ωm;奥哈镇的细沙/粗沙厚度为 46.6 至 83.7 米,电阻率范围为 145.9 Ω-m 至 466.4 Ω-m。因此,最适合采砂的 VES 站是 VES 1、5 和 7 站,这些站在研究区域内有相对巨大的可开采砂矿,深度超过 80 米。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Estimation of the variability of sand deposits in chosen communities in parts of Niger delta, Southern-Nigeria using geophysical techniques

Fine and coarse typical sand are among the most vital raw materials in building construction. A lot of drilling has been done without appropriate subsurface information resulting to a waste of resources and time. Geophysical methods give information on subsurface lithologies to locate areas with huge success. Thus, a geophysical investigation of subsurface deposits was carried out in this research to ascertain the quantity of fine/Coarse sand or areas with viable fine/Coarse sand utilizing Schlumberger configuration, Dipole–Dipole (2D) and well logging in parts of Okpe and Ughelli North LGA of Delta State, Nigeria, before extraction (dredging) for the benefit of exploitation and development. This was done by assessing the geo-electric formation of fine/coarse sand in the studied areas concerning their depths and thicknesses. Seven Vertical Electrical Sounding (VES) were obtained with the application of Schlumberger array, seven 2D and three well logging to estimate the viability of sand deposits in the study areas. These techniques have the efficacy of detecting near-bed formation with vital resolution. The data obtained from the field were illustrated by partial curve matching coupled with computer iteration using the WIN RESIST and Dipro Software to obtain sounding curves which revealed four to six layers. The layers consist of topsoil, lateritic clay and clayey sand, fine sand deposit, medium to coarse grain sand and coarse sand. For Agbarho, thicknesses of fine/coarse sand in the VES stations ranges from 18.0 to 55.6 m with resistivity varying from 223.7 to 572.9 Ωm, Osubi Fine/Coarse sand thickness ranges from 13.5 to 59.9 m with resistivity values within 211.9–891.0 Ωm and Oha town locations have fine/coarse sand thickness varied from 46.6 to 83.7 m with resistivity interval computed between 145.9 Ω-m and 466.4 Ω-m. Thus, the best VES stations that are more viable for sand mining are VES 1, 5 and 7 which contain relatively huge viable sand deposits in the study areas to a depth above 80 m.

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来源期刊
Solid Earth Sciences
Solid Earth Sciences GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
3.60
自引率
5.00%
发文量
20
审稿时长
103 days
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