大断面开切眼联合支护及效果分析

An analysis of the results of combined support to open cuts with large section area

针对西部某矿大采高工作面大断面(宽8.2 m×高3.5 m)开切眼具体地质特征,提出了锚梁网索联合支护的方案,并采用有限差分数值计算程序FLAC2D及矿压监测对开切眼的支护效果进行了分析。结果表明,开切眼采用联合支护技术是合理的,所采用的支护参数能够较好地满足工作面顺利投产的要求。

Abstract According to the specific geological characteristics of open cuts with large cross-section（8.2m wide × 3.5m high） for coal faces with large mining heights in a western China mines,the paper proposes a support scheme using wire meshed beam,and undertakes in-depth analysis on the support effect to open cuts by means of the finite difference nummercial calculation program FLAC2D and mine pressure monitoring.The results showed that the combined support technology is rational for open cuts,and the main technologic parameters adopted can preferably satisfy the successful commissioning of coal faces.