The CERCHAR abrasivity test is very popular for determination of rock abrasivity. An accurate estimation of the CERCHAR abrasivity index (CAI) is useful for excavation operation costs. This paper presents a model to calculate CAI based on the gene expression programming (GEP) approach. This model is trained and tested based on a database collected from the experimental results available in the ...

the microscopic and geomechanical properties of igneous building stones include the level of alteration, presence of micro cracks, peak strength, porosity, proportion of detrimental minerals, etc. porosity is reportedly of a devastating impact on the peak strength of igneous rocks. the quartz diorite rock samples in this study were selected from five quarries in natanz, iran and subject to micr...

A significant portion of the world's oil reserves is contained in carbonates reservoirs. Because complex hydro-thermo-geomechanical-geochemical processes uptake from these reservoirs difficult. In recent decades, many efforts have been made to model fractured rocks. But on stochastic nature there has done only a few studies. Geochemical models deal with chemical reactions that take place into f...

This study evaluates the in-situ stress field and the potential risk of fault reactivation and seal breach in the Mutineer and Exeter fields, Australian North West Shelf. Stress determinations are undertaken using pumping pressure test, rock mechanical, and log data from twelve wells. Subsequent geomechanical modelling uses the stress data to assess pore pressure changes that may induce slip on...

Abstract. A decisive criterion for the selection and long-term safety of a deep geological repository high radioactive waste is crustal stress state its future changes. The basis any prognosis recent state, but knowledge in Germany quite low this respect. There are orientation data provided by World Stress Map (WSM, Heidbach et al., 2018) magnitude from database (Morawietz 2020) Germany, both p...