Groundwater Characterization of Cihaur Watershed Basin, Batujajar and Adjacent, West Bandung District, West Java, Indonesia

Padjadjaran Earth Dialogues: International Symposium on Geophysical Issues

Azy, Fikri Noor^1 ; Hadian, Mohamad Sapari Dwi^1 ; Ismawan^1

Geological Engineering Dept., Universitas Padjadjaran, Jalan Raya Bandung-Sumedang KM 21, Bandung

45363, Indonesia^1

关键词: Field orientation;    Geological conditions;    Groundwater aquifer;    Measurement tools;    Physical and chemical properties;    Physico-chemicals;    Physicochemical property;    Quality assesment;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/29/1/012027/pdf
DOI  :  10.1088/1755-1315/29/1/012027

来源: IOP

【 摘 要 】

The study was conducted based on data from outcrop, well data, and springs with field orientation method assisted by the use of GPS and measurement tool physical and chemical properties of groundwater. Geological conditions investigated were geomorphology and stratigraphy, geomorphology unit study area consists of four units, namely geomorphology unit of strato volcano body, foot of strato volcano, intrusion units, and plains units and the river drainage patterns are parallel and subparallel. Stratigraphy in the study area are volcanic breccia (Qbv), Unit Andesite (Qa), Unit Tuff (Qtf) and Unit Clay Tuffan (Qlt). The characteristics of the groundwater of the study area are in form of the physico-chemical, major elements, and hydrolic parameter of the groundwater aquifers. From 27 locations, the water quality assesment by physico-chemical properties is classified as fresh water category and based on chemical major elements, has been classified 8 facies which are located in the study area. Then, there are two lithologies which act as aquifers ie, tuff and volcanic breccias. Conductivity values in the range of volcanic breccia aquifers respectively 0,128 m/day and 0,288 m/day, transmitivity (T) ranges respectively 1,9296 m2/day and 4,32 m2/day. The value of conductivity in tuff aquifer is 0,063 m/day, transmitivity (T) is 0,95 m2/day. While lithology Qlt (Clay tuffan) is lithology with very low productivity of groundwater or called groundwater rare area (akiclud) and the rock units Qa (Andesite) is a non-aquifer that is the absence of groundwater in these rock units (akifug).