A METHOD IN THE EXCAVATION OF UNDERGROUND CAVERNS IN ROCK

摘要

PCT No. PCT/SE84/00001 Sec. 371 Date Jul. 24, 1984 Sec. 102(e) Date Jul. 24, 1984 PCT Filed Jan. 9, 1984 PCT Pub. No. WO84/02741 PCT Pub. Date Jul. 19, 1984.The present invention relates to a 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 diameter of 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 cavern (1), these vertical holes (12) serving to drain water from the aforementioned region, for the purpose of minimizing the extent to which water can penetrate the rock cavern (1). (FIG. 1).