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- blast vibration damage 爆破震动灾害
- New method for determining blasting vibration damage criterion on open-pit slope and its application 露天矿边坡爆破振动破坏判据新方法及其应用
- In millisecond blast engineering,the key to achieving initiative control of vibration damages by means of wave interference is to ascertain reasonable delay time interval. 在微差爆破工程中,用干扰降震法实现爆破震动灾害主动控制的关键在于确定合理的微差延期时间。
- With extensive application of blast techniques, more and more attentions are focused on the influence of blast vibration. 随着爆破技术的广泛应用，人们越来越关注爆破震动，爆破震动危害己成为国民经济建设中一个重要的环保问题。
- The dominant blast vibration frequency affects the evaluation of slope stability under the condition of blast vibration via its being close to the natural frequency of slope. 爆破振动主频就是通过对边坡自振频率的接近程度来影响其对边坡的稳定性评价,故求得边坡自振频率具有十分重要的意义。
- In the drilling construction of submarine tunnel,the damage and fragment of surrounding rocks must be induced by blasting vibration to endanger the safety of tunnel construction. 海底隧道掘进爆破开挖岩石的过程中,爆破振动必然会对隧道覆盖岩石造成损伤和破坏,危及隧道施工安全。
- The landslip of rock slope with the influence of blasting vibration often results in serious disasters, frequently with heavy losses of life and damage to property. 针对山区露天开挖和岩石边坡工程实际,根据极限平衡理论和模糊数学理论,建立了相应的理论分析模型。
- The results show that the dominant frequency componems of single deck blast vibration signals are concentrated at the higher frequency band(39 Hz-156Hz)and the ratio of the energy of low frequency components(less than 39 Hz) to the total energy is lower. 结果表明,在单段爆破中,爆破震动信号成分主要以中高频(39Hz~156Hz)为主,低频成分(39Hz以下)所占比例极少。
- Secondly, three single deck blast vibration signals were analyzed by wavelet packet based on software MATLAB and the change of energy distribution curve at different frequency bands was obtained. 其次，基于MATLAB时爆破振动信号进行小波包分析，得到了爆破振动信号在不同频带上的能量分布图。
- In this paper,the method for optimizing the blasting parameters so as to minimize the damage of backfilling caused by blasting vibration and to improvethe safety under the backfilling is expounded. 为正确应用充填技术，做到安全生产，着重阐述了通过优化爆破参数，减小了爆破振动对充填体产生的危害，从而提高了井下职工在充填体下工作的安全性，并为减少矿山伤亡事故提供了经验。
- Blast Vibration Monitoring and Shock-proof Measures 爆破震动监测与防震
- The study of blast vibration effect and safety 地震效应及安全研究
- With the progress of the mining operation in Lanjian Iron Ore year on year the effect of blasting vibration on safety of adit is increasing. 随着兰尖铁矿采场水平逐年下降,爆破震动对平硐的安全影响日益突出。
- The calculation results and open-pit slope stability under blasting vibration influence are analyzed and appraised. 以计算结果为参照来分析、评价爆破震动对边坡稳定性的影响。
- The accordion was in full blast in the hall. 在大厅里手风琴拉得非常响亮。
- We also studied the influence of blasting vibration on the people and studied the laws o... 并针对爆破震动对人的影响,以及爆破震动频率的衰减规律进行探讨。
- So the study of the influence of blasting vibration on underground chambers is of great importantance both in theory and practice. 因此,研究爆破振动对地下洞室的影响,不仅具有重要的理论意义,同时也具有重要的工程意义。
- The flood did a lot of damage to the crops. 洪水毁坏了大量农作物。
- To determine rational microsecond delay time is both the requirement of ensuring blasting quality and the key to achieve blasting vibration reduction. 确定合理的微差间隔时间,既是保证爆破质量的需要,又是达到爆破降震的关键。
- The party was going on in full blast. 聚会进行得热闹非凡。
