关键词: 地压活动, 钢架混凝土, 软弱岩层, 自稳隐形拱, 钢筋拱架

Abstract: In order to summarize a set of support schemes suitable for the actual mine,More than 20 years of mine production in Erlihe Leadzinc Mine,various support technologies have been introduced for testing.According to the engineering environment of mine roadway and chamber,the scheme of single or combined support of bolt,steel bar,steel frame and concrete is determined,especially the support mode and parameters of hoist chamber with 12.4 m span in phyllite.It has reference value for the support of largespan chamber engineering in weak rock stratum of mine.According to the example of phyllite support in the upper wall of steeply inclined and gently inclined orebodies,the engineering schemes of bolt,bolt and cable support are listed respectively.The temporary support of pillars and crossbeams is used in the areas of stope connection roadway and mining room pedestrian passage.It not only improves the safety of stope operation,but also reduces the mining loss rate by 5% and the dilution rate by 7%.

Key words: Ground pressure activity, Steel frame concrete, Soft rock stratum, Selfstable invisible arch, Steel bar arch