巨厚砾岩地表斑裂产生位置理论分析及数值模拟研究

The theoretical analysis and the numerical simulation study on the surface crack location of extreme thick conglomerate

某煤矿覆岩主要特点是具有第三系巨厚砾岩层,厚度500～960m,开采时地表多处出现了斑裂现象,斑裂给区域环境带来严重影响。为预测工作面的开采宽度与地表斑裂涨裂位置的对应关系,本文利用理论分析、数值模拟、现场实测等方法,对巨厚砾岩地表斑裂产生的规律进行了研究。

The main character of Overlying strata in a coal is extreme thick conglomerate,thickness 500 ～ 960 m,mining surface multiple spots appeared crack,crack spot brings the serious influence of regional environment. For the prediction of mining working face width and surface crack corresponding relation between the crack position,based on the theoretical analysis,numerical simulation,field test and other methods,the law of the thick conglomerate of surface crack is studied.