“夺命陷阱”和城市“变矮”是我国“地陷”的两种主要表现形式。前者多处于人口密集的城市,稍有不慎即酿成重大突发事件;后者潜移默化,严重者导致海水倒灌形成“水城”。中国工程院院士呼吁,谨防地面沉降与塌陷的复合灾害。 “Life trap ” and the city “dwarf ” is the two main manifestations of China “land subsidence ”. The former is mostly located in a densely populated city, with a slight accident resulting in a major accident; the latter is subtle and in severe cases, the seawater is invaded to form a “water city.” Chinese Academy of Engineering urged to guard against the composite subsidence and collapse of the disaster.