山西榆次地裂缝形变微动态的观测与研究

通过对山西榆次地裂缝及墙体裂缝的动态监测，发现如下特征：地裂缝总体趋势为增大，年速率小于等于1mm/a。东部地裂缝带地裂平均速率为0．6mm/a，且大于西部地裂缝带，地裂有向东南方向（榆次市区）扩展的态势；从曲线形态看，无论是地面测点还是建筑物上的测点，都不同程度地受气温变化和降水的干扰。裂缝与温度的变化呈负相关，与降水的变化呈正相关。从地裂的分布形状、区域形变场特征及新构造运动的角度看，附近的断裂活动与地裂的发展似有一定的关系。

Measurement and Analysisfor Dynamic Stateof Deformation of Ground Fissure in Yuci of Shanxi Province

Through the dynamic survey for the ground fissure and the fissure of the wall bodies of Yuci,Shanxi,it is found that the general trend of the ground fissure is increasing,its annual rate is equal to 1 mm/a or less than 1 mm/a.The average rate of the ground fissure in the east part is 0 6 mm/a,and it is more than the ground fissure in the west part.The ground fissure shows the spreading trend toward ES.Based on the shape of the survey curve,the survey point of the ground or the survey point of the buildings are disturbed by the air temperature and the rainfall.The relation between the fissure and the air temperature is normal correlation,and the fissure with the rainfall is negative.Based on the distribution shape of the fissure,the feature of the regional deformation field and the geotectonic movement,the additional faulting with the development of the fissure may be relative.