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水库坝区竖井开挖爆破技术及振动测试分析
Vibration Measurement and Analysis on Control Blasting Technology for Shaft Excavation of the Reservoir Dam Area
【摘要】 结合水库坝区竖井开挖爆破的施工实际,对竖井的爆破参数进行了设计,阐述了爆破振动的测试方法并对测试结果进行了分析。从实测典型波形图看,各段波峰基本按设计的微差间隔时间分隔开,由于雷管跳段使用,所以没有出现明显的振动峰值叠加现象,其爆破分段是合理的。测得的最大振动速度为2.68 cm/s,爆破振动不会对主要建(构)筑物产生影响。
【Abstract】 In the light of its practical construction,the blasting parameters of the shaft were designed,and the monitoring method and results of shaft blasting excavation in the reservoir are introduced.From the typical waveform graph,different wave peaks are separated as the designed millisecond delay intervals.The blasting sections are reasonable because no peak overlapping was found due to sectional blasting.The maximum vibration speed is 2.68cm/s,therefore the blasting vibration has no impact on the dam.
【关键词】 竖井;
控制爆破;
振动测试;
水库坝区;
【Key words】 shaft; control blasting; vibration measurement; reservoir dam area;
【Key words】 shaft; control blasting; vibration measurement; reservoir dam area;
- 【文献出处】 地下空间与工程学报 ,Chinese Journal of Underground Space and Engineering , 编辑部邮箱 ,2009年03期
- 【分类号】TV542
- 【被引频次】9
- 【下载频次】165