| 发明名称 |
METHOD OF MAKING IMPERMEABLE WATER BEARING LOOSE AND COHERENT LAYERS OF GEOLOGICAL FORMATION AROUND A SHAFT BEING DRIVEN WHILE USING THE FORMATION FREEZING METHODKH SLOEV GORNOGO MASSIVA VOKRUG STVOLA,UGLUBLJAEMOGO S PRIMENENIEM TEKHNOLOGII ZAMORAZHIVANIJA GORNOGO MASSIVA |
