采空塌陷（mined out area breakdown）是指由于地下挖掘形成空间，造成上部岩土层在自重作用下失稳而引起的地面塌陷现象。
采空塌陷区处治技术是矿区高速公路建设的技术难题之一。
Mined-out region, as a difficult geotechnical problem, has been encountered in the construction of highway recently.
内因决定了采空塌陷的分布区域，外因则控制它的发育程度。
The former controls distribution of the collapse and the lattter its development degree.
枣庄市市中区主要地质灾害有喀斯特塌陷、采空塌陷和崩塌。
Major hazards in middle district of Zaozhuang city are karst collapse, stope out collapse and break down.
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