Identifikasi Lapisan Litologi Akifer Sumur No.1 Menggunakan Metode Geolistrik 2 Dimensi dan Log Pemboran Kawasan Padang Sebang Gadek Melaka Malaysia

Sailani, Venny Maifransiska (2019) Identifikasi Lapisan Litologi Akifer Sumur No.1 Menggunakan Metode Geolistrik 2 Dimensi dan Log Pemboran Kawasan Padang Sebang Gadek Melaka Malaysia. Undergraduate thesis, Universitas Islam Riau.

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Abstract

location of the research is geographically included in Skema Irigasi Padang Sebang II Gadek, Negeri Malaka, Malaysia. The coordinates of the study area are located between 2° 18'41.39 "N 102 ° 15 ° 11.68" E. The objectives of the research to determine the aquifer layer, aquifer modeling, aquifer lithology and aquifer capability. Method of study are obtaining data is geoelectric measurement with dipole-dipole configuration, drilling and pumping test. he results of study Skema Irigasi Padang Sebang II Gadek aquifer has lithology composition of 0.5 - 100 Ωm is the alluvium deposits (clay, sand), claystone, groundwater containing sandstones at a distance of 0 - 400 m at a depth of 0 – 125 m and 100-1000 Ωm is a igneous rock as bedrock at a distance of 170 - 310 m with a depth of 25-150 m. Groundwater aquifers in this area in alluvium deposits (sand and clay) with a value of 0.5 - 30 Ωm at a distance of 100-220 m with a depth of with avalue 25-100 msec chargeability ranging from 0 - 3 msec which is groundwater and alluvium, 3 - 10 msec is gravel and 10 - 75 msec is granite and granodiorite. Composite lithology is sand and granite with aquitard type. Constant discharge test obtained transmisivity value 0.7471 m2/ day, and permeability value 0.0077, recovery test obtained obtained transmivability value 19.72 m2/ day with recovery results of 60.57%, permeability value obtained for 0.20 indicates a very low aquifer capability.

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