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采用最小二乘配置法对苏州相城区二等水准观测数据进行处理,通过对数据进行内插和拟合,建立起苏州市相城区的地面沉降等值线图,在此基础上,对相城区2006年以来的地面沉降现状进行了分析。结果表明,该地区的地面沉降强度总体不大,与以往相比体现了一定的继承性。除个别地面沉降区域外,近年来全区的年沉降速率在10 mm左右,属于轻微程度地面沉降。
The least square collocation method was used to process the second-level observation data in Xiangcheng District, Suzhou. Based on the interpolation and fitting of the data, a contour map of land subsidence in Xiangcheng District, Suzhou City was established. Based on this, The status of land subsidence since 2006 was analyzed. The results show that the land subsidence intensity in this area is generally not large, which shows some inheritance compared with the past. In addition to individual land subsidence area, the annual sedimentation rate in recent years in about 10 mm, belonging to a slight degree of land subsidence.