Rock Mech Rock Eng (2018) 51:639–645 https://doi.org/10.1007/s00603-017-1351-7 TECHNICAL NOTE Electrical Resistivity Evolution and Brittle Failure of Sandstone After Exposure to Different Temperatures 1 1 Chao Lü · Qiang Sun Received: 19 May 2017 / Accepted: 27 October 2017 / Published online: 3 November 2017 © Springer-Verlag GmbH Austria 2017 Keywords Sandstone · Electrical resistivity · Brittle and Habberjam 1986; Busby and Jackson 2006; Wang et al. failure · Temperature · Yield stress 2012; Brantut et al. 2013; Oh 2013). In the past few decades, considerable efforts have been made to carry out experi - List of symbols ments that quantify the relationship between electrical resis- ρ Electr ical resistivity of the pore water (Ω m) tivity and cracks (or stress) in rocks (see e.g., Morrow and ρ (Δρ) Electrical resistivity of the rock (increment) Brace 1981; Skagius and Neretnieks 1986; Wang et al. 1978; (Ω m) Chen and Lin 2004; Kahraman and Yeken 2010; Zhang et al. ϕ (Δϕ) Porosity of the rock (increment) 2016b). S (ΔS) Water saturation of the rock (increment) However, studies on the variations in rock resistivity after m (Δm) Rock cementation index (increment) exposure to different temperatures are rare. Therefore, the n (Δn) A constant related to the water content of the effects of variations in the resistivity
Rock Mechanics and Rock Engineering – Springer Journals
Published: Nov 3, 2017
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