Groundwater Geophysics in Hard Rock

ISBN: 9780415664639 出版年：2015 页码：376 Chandra, Prabhat Chandra CRC Press

In hard rock terrain, shallow water wells generally have a poor to moderate yield. Sinking wells deeply to tap yielding fracture zones often backfires, because the borehole may miss the saturated fracture zones at depths. A wrong approach to groundwater exploration in hard rock has therefore often led to unnecessary recurring expenditures and waste