边坡爆破开挖中减震沟合理尺寸的确定Determination of Damping Ditch Size in Slope Blasting Excavation
王晨龙,张世平,张昌锁
摘要(Abstract)：
开挖减震沟是降低爆破地震效应的有效措施,而其合理尺寸的确定不仅能够节约成本,而且也能加快施工进度。通过数值模拟对太原西山某边坡台阶爆破开挖时,减震沟的合理尺寸的确定进行了研究并指导实际施工,结果表明:对于该边坡,单排炮孔作用时,减震沟的合理长度约为炮孔覆盖区域长度的2.5倍,而其合理深度超过炮孔深度或者更深;减震沟的减震率与其长度和深度有很大关系,但减震率并不是随着长度和深度的增加而无限增加,当其达到某一值时,减震率趋于恒定。
关键词(KeyWords)： 减震沟;合理尺寸;减震率;数值模拟
基金项目(Foundation): 国家自然科学基金项目(50774054)
作者(Author): 王晨龙,张世平,张昌锁
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