摘要
本文是依据上榆泉煤柱逐渐缩小时,巷道围岩破坏特征及顶帮变形量进行了研究.结论是当煤柱尺寸为16 m时,煤巷围岩稳定性有明显变化;12.5～9 m时,煤柱开始出现屈服;9～5.5 m时煤柱发生明显破坏,煤巷围岩出现严重破裂,顶帮的破坏深均在3 m左右;2.0 m时直接顶和基本顶同时垮落.据此确定该矿10#煤层煤巷煤柱尺寸取为16 m .
In the paper, introduced model foundation and simulation of caved waste. When working face was pushed 150m , the front and back different distances of working face was stood by effect of mining. There were side wall rock breakage character and stress distributing character. According to that , we can confirm pillar proper dimension and proper position of gate.
出处
《矿山压力与顶板管理》
EI
北大核心
2005年第1期24-26,共3页
Ground Pressure and Strata Control
