[1]王社光①②,杨志强①②,王立杰①②,等.地下中深孔爆破的最佳减振延期时间研究[J].爆破器材,2024,53(03):58-64.[doi:10.3969/j.issn.1001-8352.2024.03.009]
　WANG Sheguang,YANG Zhiqiang,WANG Lijie,et al.Optimal Vibration Reduction Delay Time in Medium-Deep Hole Blasting Underground[J].EXPLOSIVE MATERIALS,2024,53(03):58-64.[doi:10.3969/j.issn.1001-8352.2024.03.009]
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地下中深孔爆破的最佳减振延期时间研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
53
期数:
2024年03
页码:
58-64
栏目:
爆破技术
出版日期:
2024-06-04

文章信息/Info

Title:
Optimal Vibration Reduction Delay Time in Medium-Deep Hole Blasting Underground
文章编号:
5828
作者:
王社光①②; 杨志强①②; 王立杰①②; 杨曦③; 王福全①②; 王庆刚①②
①河北钢铁集团沙河中关铁矿有限公司（河北邢台，054100）
②河北省复杂铁矿低碳智能高效开采技术创新中心（河北邢台，054100）
③华北理工大学矿业工程学院（河北唐山，063210）
Author(s):
WANG Sheguang①②; YANG Zhiqiang①②; WANG Lijie①②; YANG Xi③; WANG Fuquan①②; WANG Qinggang①②
①Shahe Zhongguan Iron Mine Co., Ltd., Hebei Iron and Steel Group (Hebei Xingtai, 054100)
②Hebei Complex Iron Ore Low Carbon Intelligent and Efficient Mining Technology Innovation Center (Hebei Xingtai, 054100)
③College of Mining Engineering, North China University of Science and Technology (Hebei Tangshan, 063210)
关键词:
中深孔爆破; 孔间最佳延期时间; Matlab数据拟合; 高频次子周期; 减振
Keywords:
medium-deep hole blasting;  optimal delay time between holes;  Matlab data fitting;  high frequency subcycle;  vibration reduction
分类号:
TD235
DOI:
10.3969/j.issn.1001-8352.2024.03.009
文献标志码:
A
摘要:
以地下铁矿扇形中深孔爆破为研究对象，对实际采集的爆破振动波进行全波段的频率分析，在Matlab拟合叠加分析的基础上，提出了以高频次子周期对应的半周期为最佳延期时间的方法，并进行了数值模拟与现场验证。研究表明：将爆破振动波主频对应的半周期进行错相相减，减振效果并不明显，甚至有振动增强的现象；孔间最佳延期时间主要与爆破振动波有效波段内所包含的高频次子周期相关。以高频次子周期确定延期时间准确性更高。多次叠加减振强度的大小仍与高频次子周期相关。只是在低叠加次数条件下，两者之间的敏感性不高，次高频次子周期也可以起到一定的降振效果。但是，随着叠加次数的增加，两者之间的关联性不断增强，故只有高频次子周期才有良好的连续叠加减振效果。
Abstract:
Taking fan-shaped medium-deep hole blasting of underground iron ore as the research object, a full band frequency analysis was conducted on the actual collected blasting vibration waves. Based on Matlab fitting and superposition analysis, a method was proposed with the half-cycle corresponding to the high-frequency sub-cycle as the optimal delay time. It was verified by numerical simulation and field test. Results show that, by subtracting the half-cycle corresponding to the main frequency of blasting vibration waves in a staggered manner, the vibration reduction is not significant, and vibration enhancement is observed. The optimal delay time between holes is mainly related to the high-frequency sub-cycle contained within the effective band of the blasting vibration wave. Determining the delay time with the high-frequency sub-cycle is more accurate. The strength of multiple stacking is still related to the high-frequency sub-cycle. Under the condition of low stacking times, the sensitivity between the two is not high, and the sub-period of sub high frequencies can also have a certain vibration reduction effect. However, as the number of stacking increases, the correlation between the two continues to strengthen, so only high-frequency sub-cycles have good continuous superposition vibration reduction effects.

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备注/Memo

备注/Memo:
收稿日期：2023-03-02
基金项目：河北省重点研发计划项目（20374103D）
第一作者：王社光（1986—），男，高级工程师，主要从事采矿技术研究。Email：406752459@qq.com
通信作者：王福全（1987—），男，高级工程师，主要从事采矿技术工作。Email：876855218@qq.com
更新日期/Last Update: 2024-06-04