魏立恒,倪修能,郭洪雨,孙飞,葛艺超,夏兆平,王国波

• 1:上海宝冶集团有限公司
• 2:浙江数智交院科技股份有限公司
• 3:温州大学建筑工程学院

摘要(Abstract)：

隧道钻孔爆破开挖技术在城市越岭长隧道中的应用能够有效地提高施工效率，节约建造成本。然而受周边环境的影响，爆破有害效应的影响日显突出，特别是爆破振动影响成为爆破开挖制约的主要因素。根据大盘山城市越岭长隧道进出口段爆破开挖过程中对周边建筑振动影响的实际监测，分析了不同围岩爆破地震波传播衰减规律。结果表明：相同围岩等级下，围岩完整性与萨道夫斯基公式中的关键参数K、α取值存在反相关性，即在相同围岩等级下，完整性越好，关键参数取值越低。建议进口段K、α值分别为350和1.9,出口段250和1.85,并绘制了三个代表性装药量下的爆破振动速度传播曲线。根据绘制的曲线以及现场建筑对振动速度的控制要求，确定了隧道爆破开挖距离洞口的起始位置。为进出口围岩等级和完整性较差、且周边拥有密集建筑群的实际隧道开挖工程提供参考。

关键词(KeyWords)： 隧道开挖;钻孔爆破;振动速度;围岩完整性;现场测试

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52078386、51878529、51678465)

作者(Author): 魏立恒,倪修能,郭洪雨,孙飞,葛艺超,夏兆平,王国波

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