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为研究赵庄矿一次采全厚大采高工作面采动影响下留巷大变形现象,通过井下矿压实测、岩石力学参数测定、数值模拟试验、理论分析,得出留巷受采动影响的变形特征。运用FLAC3D数值模拟,得到不同煤柱宽度下留巷围岩的垂直应力集中系数,留巷在底板不支护、全断面支护2种情况下底鼓量与动压影响程度呈指数相关,最终得出对留巷进行全断面支护可有效控制底鼓量。
In order to study the large deformation phenomenon of retaining lane under the influence of mining in the fully mechanized mining face of a fully mechanized coal mining face with full thickness and large working face in Zhaozhuang Mine, the conclusion is drawn that: by the underground mine pressure measurement, rock mechanics parameter test, numerical simulation test and theoretical analysis, Deformation characteristics. By using FLAC3D numerical simulation, the vertical stress concentration coefficient of surrounding rock of roadway with different coal pillar width is obtained. Under the conditions of unsupported floor and full cross-section support, the volume of bottom drum and the influence of dynamic pressure are exponential. Finally, Out of the alley for full-face support can effectively control the amount of bottom drum.