THE DILATIVE ROCK AND ITS PREVENTION OF THE DIVERSION TUNNEL FOR DIRECTING THE HUANGHE RIVER IN TO SHANXI PROVINCE

On the basis of distribution of the dillative politic rock and its engineering characteristics in the construction area for directing the Huanghe River into northwestern Shanxi Province, the methods are proposed for eptimizing tunnel line arrangement and engineering control for tunnel construction in accordance with the dilative rocks special distribution. It is important and has reference value for the underground work in the dilative rock area.