汶川地震后两年,成都平原多个县区出现地面塌陷。就地质环境而言,成都平原不具备自然地下空洞引发大型地面塌陷的地质条件。现有地面塌陷均为人为地下空洞在自然或人为因素下引发。汶川地震缩短了产生地面塌陷的时间,致使成都平原在地震后两年内较高频率发生小规模地面塌陷。 Two years after the Wenchuan earthquake, ground subsidence occurred in a number of counties in the Chengdu Plain. In terms of the geological environment, the Chengdu Plain does not have the geological conditions that lead to large-scale ground subsidence caused by natural underground voids. The existing ground subsidence is man-made underground hole caused by natural or man-made factors. The Wenchuan earthquake shortened the time for ground subsidence, resulting in a small-scale ground subsidence at a higher frequency in the Chengdu Plain within two years after the earthquake.