茅台酒厂酒坛爆破振动安全阈值试验研究

发布时间：2018-01-14 01:31

本文关键词：茅台酒厂酒坛爆破振动安全阈值试验研究　出处：《爆破》2016年04期 　论文类型：期刊论文

【摘要】：为了探究茅台酒厂陈旧酒坛在邻近三栋高楼爆破拆除过程中的振动安全允许判据而进行现场试验,利用TC-4850N测振仪对试验模拟的高楼触地振动和台阶爆破振动分别进行监测。首先通过挖掘机炮头在不同高度下冲击地面模拟高耸建筑物倒塌触地不同振动速度,确定了酒坛在模拟最大39.27 cm/s(41.67 Hz)振动作用下安全无损,通过台阶爆破振动测试得到酒坛在10.18 cm/s(34.48 Hz)爆破振动作用下没有产生破坏,然后理论验算了酒坛位置处三栋高楼触地振动和爆破振动速度均小于酒坛试验安全允许判据。结果表明:所提出的酒坛爆破振动安全阈值的确定方法能够较好的考虑工程风险,理论验算和爆破效果表明其方法是可靠有效的,可供类似工程中确定安全阈值参考研究。
[Abstract]:In order to investigate the vibration safety criterion of the old wine altar in the blasting demolition of the adjacent three tall buildings, the field test was carried out in order to explore the criterion of the vibration safety of the old wine altar in Maotai distillery. The ground contact vibration and the bench blasting vibration of the tested tall building were monitored by using TC-4850N vibration measuring instrument. Firstly, the ground was impacted by the gun head of excavator at different heights to simulate the collapse of the towering building without touching the ground. Same vibration speed. The maximum simulated vibration of 39.27 cm/s(41.67 Hz was determined to be safe and non-destructive. Through the vibration test of bench blasting, it is found that there is no damage to the wine altar under the action of 10.18 cm/s(34.48 Hz) blasting vibration. Then, the theoretical checking calculation shows that the vibration velocity of the three tall buildings at the place of the wine altar is less than that of the safety permit criterion of the wine altar test. The results show that:. The proposed method for determining the safety threshold of blasting vibration of the wine altar can better consider the engineering risk. Theoretical checking calculation and blasting effect show that the method is reliable and effective and can be used as a reference for the determination of safety threshold in similar engineering.
【作者单位】：贵州新联爆破工程集团有限公司;
【基金】：黔科合重大专项[2015]6003 黔科合高G字[2015]4004 贵州省工业和信息发展专项基金(2015030)
【分类号】：TU746.5
【正文快照】： 拆除爆破中,爆破振动和建构筑物倒塌过程产生的触地振动效应是影响邻近被保护结构的重要因素。鉴于爆破安全规程对保护结构的受振阈值不全面[1-3],保护对象的抗振指标太模糊,目前施工过程中主要通过工程经验和数值仿真计算的方式来确定合理的振动安全阈值[4-8],对相似工程中的

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