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首页> 外文期刊>E3S Web of Conferences >Study On The Law Of Ground Strata Subsidence And Movement Induced By Caving Mining Of Slowly Inclined Large And Thick Ore Body
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Study On The Law Of Ground Strata Subsidence And Movement Induced By Caving Mining Of Slowly Inclined Large And Thick Ore Body

机译：缓倾斜大厚矿体崩落开采引起的地层沉陷与运动规律研究

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摘要

Taking the Western District of Chengchao Iron Mine as engineering background, based on the GPS monitoring data of nearly 8 years and the record of the ground surface movement, the law of ground strata subsidence and movement is studied. The studies have shown that the surface movement caused by underground mining has the characteristics of time delay and displacement angle development has the law of jumping. The strata movement caused by mining is divided into the stage of overlying strata collapse and the collapse stage of surrounding rock to 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, which respectively included 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.
机译：以成潮铁矿西区为工程背景，以近8年来的GPS监测数据和地表运动记录为基础，研究了地层沉降和运动规律。研究表明，地下开采引起的地表运动具有时延特性，位移角的发展具有跳跃规律。采矿引起的地层运动分为上覆岩层塌陷阶段和围岩-采空区塌陷阶段。在第一阶段，垂直应力起主要作用，岩石破坏表现为规则的桶坍塌。在第二阶段，水平构造应力起着主导作用，岩层的崩塌机理可以用悬臂梁理论来解释。根据地层运动的机理，将成潮铁矿地层运动分为垂直沉降区，倾覆滑动区，倾倒区，变形区，累积变形区和未扰动区六个区域。研究结果可为相似金属矿山崩落地表运动预测提供理论依据。

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