| 摘要 |
Method in the excavation of rock caverns, substantially cylindrical vertical caverns, for storing liquids or dry products, or for use in storing process units, in which method an upper and a lower circumferentially extending cavern (4, 11) is formed, the caverns (4, 11) having an outer diameter which is greater than the ultimate rock cavern (1); in which the caverns (4, 11) are connected together by means of vertical holes (12) drilled in the region immediately outside the ultimate rock (1), these vertical holes (12) serving to drain water from the aforementioned region, for the purpose of minimising the extent to which water can penetrate the rock cavern (1). |
