METHOD FOR DRIVING UNDERWATER MINE WORKING OR TUNNEL Russian patent published in 1998 - IPC

FIELD: mining industry. SUBSTANCE: this relates to development of oil and gas deposits in sea shelf and to construction of tunnels in sea bottom. According to method, created are sections of support according to cast-in-situ technology by means of sectional shuttering and then joining aforesaid sections within mother ship. Joint-together sections which create continuous chain are lowered to sea bottom and placed in trench which is made in sea bottom simultaneously with placement of support sections and covering them with ground. Prior to placement on bottom, support sections can be filled with water which is then pumped out before operating of mine working or tunnel. Aforesaid method allows for reducing period of constructing underground mine working or tunnel at simultaneous increase of their lying depth. EFFECT: higher efficiency. 1 cl, 17 dwg