埋地管道爆破振动安全允许判据试验探究Experimental Investigation of Blasting Vibration Safety Criterion on Buried Pipeline
张紫剑,赵昌龙,张黎明,赵明生
摘要(Abstract):
为了探究埋地管道的爆破振动安全允许判据而进行现场监测试验,试验利用TC-4850N测振仪和DH3820应变测试系统对埋地管道的爆破振动和管道应变分别进行监测。首先通过不同主振频率下的管道最大轴向应变分析发现最大应变主要集中在35 Hz以下,然后将主振频率小于35 Hz和大于35 Hz的峰值振速统计量分别拟合分析。结果表明:不同频率段的相关参数和萨氏公式有所不同,因此应在一定频率范围内分别确定爆破振动安全允许峰值振速。实际施工过程中应结合具体情况确定爆破施工方案,而不能仅根据模糊的法律规范条款简单决定爆破施工方案。
关键词(KeyWords): 爆破振动;埋地管道;主振频率;拟合分析;安全判据
基金项目(Foundation): 黔科合重大专项字[2015]6003;; 黔科合高G字[2015]4004;; 贵州省工业和信息化发展专项基金计划(2015030);; 贵州省优秀青年科技人才培养项目:黔科合人字[2013(30)]
作者(Author): 张紫剑,赵昌龙,张黎明,赵明生
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