This paper presents the investigation of surface geology and subsurface engineering to analyze excavation method stand-up time DK99-DK100 Jakarta-Bandung high-speed railway Tunnel, Indonesia. Rock mass quality, tunnel method, determined using Geological Strength Index (GSI), Basic Quality (BQ) systems, converted Mass Rating (RMR) The Japan Society Civil Engineering (JSCE) for comparison. result...

iron oxide minerals in soils provide valuable insights into pedogenic processes. a wealth of such information has been obtained by rock magnetic investigations on temperate soils but similar studies on tropical soils are rare. here, we report rock magnetic data on pristine soil profiles and surficial soils from five catchments in the tropical southern india and throw light on the pedogenic pro...

Abstract Rock moisture in the vadose zone, while recognized as important, is rarely monitored—in part because adequate instrumentation and installation techniques are lacking. The objectives of this work were (a) to test applicability a commercially available capacitance soil sensor (EC‐5, METER Group) for continuously monitoring water content weathered limestone; (b) contrast dynamics rock mat...

Landslides are caused by changes in the structure of subsurface materials on steep slopes due to weathered rock conditions and soil pores saturated conditions. This study used geoelectric resistivity method identify type landslide-susceptible areas Pacet-Trawas road corridor, Pacet District, Mojokerto Regency. The research location was an area with undulating mountainous morphology. geoelectric...

A low-clearance tunnel portal in the shallow-buried, joint-developed, broken, and loose surrounding rock slope deposit may cause safety issues during construction. In this study, Guanyin Mountain Tunnel of Chong-Ai expressway was taken as a case characteristics broken rocks, their low clearance, shallow buried bias were comprehensively studied. The three-dimensional numerical model section cons...

Limestone aquifers constitute important drinking water resources but are vulnerable to groundwater contaminations. They also known be often heterogeneous. However, the hydraulic properties of their entire vadose zone and relationship these with mineralogical geochemical characteristics remain rarely studied. The soft (soil, powdery limestone, calcareous sand) hard (limestone rock) materials sam...

A geophysical method of investigation has been deployed in order to give a quick overview the nature and rapidly changing subsurface lithologies that characterized Yikpata, Share, Kwara State, Nigeria. total nine (9) vertical electrical soundings (VES), using Schlumberger Array uniformly divided into three groups: basement, basement/sedimentary boundary sedimentary terrain, horizontal profiling...

Abstract The Dohol formation is predominantly composed of sedimentary rocks; however, the black shales attract much attention because their potential to generate hydrocarbons. Black generally have a high organic matter content and can serve as good source rocks for hydrocarbon generation. Therefore, this study was conducted characterize rocks, including shales, which are great importance discov...

In the last five years, need for materials to build infrastructure in Kulon Progo Regency has increased with construction of an international airport. process, strong earth or rock are needed make buildings resistant earthquakes, one which is andesite rock. This study aims determine rocks' resources using a three-dimensional model based on value resistivity Kalirejo district Kokap Progo. The re...