Leaching of rock fractures: laboratory and field tests for borehole heat stores : Nordell, B; Hallberg, R O; Sjoberg, L Tunnlg Underground Space TechnolV4, N1, 1989, P99–107

Leaching of rock fractures: Laboratory a

Leaching of rock fractures: Laboratory and field tests for borehole heat stores

✍ Bo Nordell; Rolf O. Hallberg; Lennart Sjöberg 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 927 KB

The aim of this research project was to increase the hydraulic conductivity o[ ]ractured rock by pumping a leaching fluid (NaOH) through rock fractures. A 16-week field test was carried out in a borehole heat store consisting of 19 vertical boreholes to a depth of 15 m in gneissic rock. The leaching