白音华一号露天煤矿合理帮坡角的确定及边坡稳定性评价

 为保证白英华一号露天煤矿开采过程的边坡安全,确定了白音华煤田一号露天煤矿各帮合理帮坡角,并对其边坡稳定性进行了分析与评价。根据白音华煤田一号露天煤矿边坡各剖面分层物料的物理力学性质,应用FLAC^3D数值模拟软件计算模拟了白音华煤田一号露天煤矿各帮边坡的稳定性,确定了各帮合理帮坡角。同时,对东端帮实施内排提高帮坡角进行了研究,模拟结果表明,内排的实现提高了所压边坡的稳定性,在保证内排跟踪距离的前提下适当提高帮坡角,进而提高煤炭的回收率在露天煤矿中是可行的。

Determination of Reasonable Slope Angle and the Evaluation of Slope Stability for the No.1 Open-pit Mine in Baiyinhua

In order to guarantee the slope safety of coal mining in Baiyinhua No.1 open-pit mine, a reasonable angle of slope has been determined and slope stability has been analyzed and evaluated. On the basis of careful analysis on engineering geology, hydrogeology, slope rock's physical and mechanical properties of materials actually exposed layer of each section, combining the past landslides for the No.1 open-pit in Baiyinhua, using slope numerical calculation software FLAC^3D, the slope stability of No.1 open-pit in Baiyinhua is analyzed and researched in detail, then the reasonable slope angles for the No.1 open-pit mine in Baiyinhua are identified. At the same time, the effects on slope stability for refuse dump inward open pit mines are researched to track in the mining process. The results show that a reasonable distance from the inner row of track might increase slope angle. It is feasible to improve coal recovery in the open-pit mine. A theoretical basis is provided for the open-pit mining in Baiyinhua.