钱营孜矿32煤层开采顶底板变形破坏的数值模拟分析
Numerical Model of Deformation and Failure of Roof and Bottom in 32 Coal Seam Mining in Qianyingzi Mine Quasi Analysis
摘要:
运用FLAC
3D数值模拟技术分析钱营孜煤矿3
2煤层在采动影响下顶、底板岩体变形破坏和矿压显现分布规律。预测得出3
2煤层底板最大破坏深度为15.2 m,导水裂缝带高度为46.0 m,垮落带高度为14.8 m。预测值与相邻矿区的实测值相近,故通过数值模拟获取的预测值较可靠,可在3
2煤层的后续开采工作中对防治水有一定的指导作用。
Abstract:
The article analyzes the mining effect under the influence of the top floor rock deformation damage and strata behavior of 32 coal seam in Qinyingzi by FLAC3D numerical simulation techniques. It is predicted that the maximum failure depth of 32 coal seam floor is 15.2 m, height of water flowing fractured zone is 46.0 m, and the caving zone height is 14.8 m. Predictive value is similar to the measured value of the adjacent properties which prove that the predicted values obtained by numerical simulation is more reliable, and can play a security role in guiding the follow-up of 32 coal seam mining work.
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