Overview on survey of water installations underground: underground water-conveyance and storage facilities

摘要

In 1997, Working Group No. 4 'Subsurface Planning' of the International Tunnelling Association (ITA), decid- ed to made an investigation of underground water supply and storage facilities, including underground works for floss control. Sadly enough, we have only in the last few decades Experienced many times when uncontrollable amounts of Rain water (or melting water) have caused major catas- Trophes for both nature, animals and human beings. In Some of these cases, no tunnels in the world would have Helped the situation.