李晨,李明慧,吴帅峰,王蒙,刘殿书

• 1:中国矿业大学(北京)力学与建筑工程学院
• 2:中建交通建设集团投资管理公司

摘要(Abstract)：

为了研究巷道爆破掘进过程中掏槽空腔直径对崩落孔爆破效果的影响,运用ANSYS/LS-DYNA对掏槽空腔附近崩落孔的爆破效果进行模拟计算。建立崩落孔孔距A为450 mm、崩落孔抵抗线L和掏槽空腔直径B均为400 mm的初始模型,并以该模型为基础,保持L和A不变,逐步增大B建立额外4个模型。计算并绘制崩落区岩石的塑性应变图,分析得出:随着掏槽空腔直径的增大,岩石塑性应变区域开始增大,爆破效果逐渐改善,当B/L=2时炮孔之间的塑性应变区域连通,掏槽空腔直径对爆破的改善效果达到最优水平;提取掏槽空腔外一系列监测点的拉、压应力值进行分析后得到相同的结论。研究结果可为巷道爆破孔网参数设计提供理论依据和技术参考。

关键词(KeyWords)： 巷道掘进;参数优化;LS-DYNA;掏槽空腔直径;崩落孔

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金资助项目(2010QL05);; 教育部博士点基金项目(20100023110001)

作者(Author): 李晨,李明慧,吴帅峰,王蒙,刘殿书

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