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针对神东矿区浅埋工作面过山丘地形强矿压显现的问题,应用均匀设计和数值模拟的研究方法,建立山丘地形浅埋工作面应力增高系数与其主要影响因素之间的回归模型.研究结果表明:应力增高系数与山丘高度和采高成正比,与山丘坡角和工作面埋深成反比;各因素敏感性主次顺序为采高、山丘坡角、山丘高度、工作面埋深.以活鸡兔井12305面和上湾矿12206工作面在过山丘地形时的矿压监测值与回归结果进行对比,偏差最大值占监测值的4.5%,回归方程基本能够进行对山丘浅埋工作面矿压显现程度进行较为准确的预测.
Aiming at the problem of the strong ground pressure of shallow surface in Shendong mining area, a regression model was established between the stress increase coefficient and its main influencing factors in the shallow surface of the mountainous terrain by using the uniform design and numerical simulation method. The results show that the coefficient of increase of stress is proportional to the height of the hill and the height of the mining hill, and is inversely proportional to the slope angle of the hill and the buried depth of the working face. The order of the sensitivity of the factors is mining height, hill slope angle, hill height, Depth of burial depth.With the monitoring results of the ground pressure at 12305 face of live-chicken rabbit and 12206 face of Shangwan mine over the hilltop topography, the maximum of deviation is 4.5% of the monitoring value, and the regression equation can basically Carrying out a more accurate prediction of the degree of occurrence of underground pressure in the hilltop shallow caving face.