Taking caving mining method in Chengchao Iron Mine as engineering background, based on GPS monitoring data, deep rock mass deformation and collapse monitoring data and on-the-spot surface movement record, the collapse and movement rules of rock strata in the mining area were studied. The studies have shown the following: Underground mining has the law of delay of surface movement and jump of limit angle development. The roof caving of concealed goaf in Chengchao Iron Mine experienced the process of slow caving (caving stop) → sudden caving → slow caving (caving stop) → sudden caving. The strata movement caused by mining can be divided into the stage of overburden rock collapse in the goaf and the stage of surrounding surrounding rock dumping and failure in the goaf. In the first stage, the vertical stress plays a leading role and rock failure is shown as a regular barrel collapse. In the second stage, horizontal tectonic stress plays a leading role and the collapse mechanism of rock strata can be explained by the cantilever beam theory. According to the mechanism of strata movement analysis, strata movement of Chengchao Iron is divided into six regions: vertical subsidence area, toppling sliding zone, dumping area, deformation zone, cumulative deformation area, and undisturbed zone. The results of this paper can provide a theoretical basis for the surface movement prediction of caving mining in similar metal mine.

以程潮铁矿崩落开采法为工程背景，基于GPS监测数据、深部岩体变形坍塌监测数据和现场地表运动记录，研究了矿区岩层的坍塌和运动规律。 . 研究表明： 地下开采具有地表运动延迟和极限角发展跳跃的规律。程潮铁矿隐蔽采空区顶板崩落经历了慢崩（停止崩落）→突然崩落→慢崩（停崩）→突然崩落的过程。开采引起的地层运动可分为采空区上覆岩崩塌阶段和采空区围岩倾倒破坏阶段。在第一阶段，垂直应力起主导作用，岩石破坏表现为规则的桶形坍塌。在第二阶段，水平构造应力起主导作用，岩层的坍塌机制可以用悬臂梁理论来解释。根据地层运动机理分析，程潮铁矿地层运动可划分为六个区域：垂向沉降区、倾覆滑动区、倾倒区、变形区、累积变形区和原状区。研究结果可为同类金属矿山崩落开采地表运动预测提供理论依据。根据地层运动机理分析，程潮铁矿地层运动可划分为六个区域：垂向沉降区、倾覆滑动区、倾倒区、变形区、累积变形区和原状区。研究结果可为同类金属矿山崩落开采地表运动预测提供理论依据。根据地层运动机理分析，程潮铁矿地层运动可划分为六个区域：垂向沉降区、倾覆滑动区、倾倒区、变形区、累积变形区和原状区。研究结果可为同类金属矿山崩落开采地表运动预测提供理论依据。