ANALYSIS ON THE MOVEMENT TENDENCY OF XIAN GROUND FISSURES

The formation and movement of Xian ground fissures are mainly caused by geotectonic movement and human activities. The extraording movement of the ground fissures mainly resulted from uneven ground subsidence that caused by the over pumping of ground water. According to analyses of compaction consolidation process of sediments layers, ground water variation tendency, and result of Verhulst model prediction, it is concluded that the movement intensity of Xian ground fissures tends to gradually become weaken. The resent observation data on ground fissures movement show some indicatons to reduction in its rate.