Understanding the excavation-induced fractured zone (EFZ) around drifts is paramount in context of deep geological disposal for nuclear waste since fractures can introduce pathways migration radionuclides. Drifts Meuse/Haute-Marne Underground Research Laboratory (URL) have been essentially excavated following two main directions major and minor horizontal stresses. Field observations on GCS (pa...

Recent studies indicate that volcanism may be a potentially important factor in the formation of karstic bauxite, but more evidence is needed. Six billion tons bauxite formed upon paleo-karstic terrain within short time Late Carboniferous North China Basin (NCB) and Permian Youjiang (YB) China. The factors trigger their apace remain unclear. Herein, we proposed extensive volcanic eruptions have...

Geoelectric is the most popular geophysical method for groundwater exploration. This based on measuring electric current injected into earth and potential generated at surface. research was carried out Mount Tunak, island of Lombok, using Wenner electrode configuration. The data then processed Res2div software. survey conducted two lines obtained parameters, namely injection measured surface th...

A mixture of the MX80 bentonite and the Callovo-Oxfordian (COx) claystone were investigated by carrying out a series of experiments including determination of the swelling pressure of compacted samples by constant-volume method, pre-swell method, zero-swell method and swell–consolidation method. Distilled water, synthetic water and humidity controlled vapour were employed for hydration. Results...

Abstract. The site selection procedure for a high-level radioactive waste repository in Germany is based on the Repository Site Selection Act (StandAG, 2017), which comprises three phases. In phase 2 Federal Company Radioactive Waste Disposal (BGE) will conduct surface exploration. Based exploratory findings, further developed preliminary safety analyses, common requirements and criteria, poten...

Kegiatan peledakan merupakan salah satu aktivitas utama dalam kegiata pemberaiaan batuan. Banyak faktor yang dapat mempengaruhi hasil tersebut, satunya kondisi geologi batuan setempat. Kondisi material berlapis antara claystone dan sandstone menyebabkan kurang optimum karena tidak tersebarnya energi secara merata pada memiliki berlapis, hal tersebutlah fragmentasi optimal atau memenuhi target p...

The Diffusion Poisson Coupled Model describes the evolution of a dense oxide layer appearing at surface carbon steel canisters in contact with claystone formation. This model is one dimensional free boundary problem involving drift-diffusion equations on density species (electrons, ferric cations and oxygen vacancies), coupled equation electrostatic potential moving equations, which describe po...