利用信号处理计算技术评估从爆炸引起的地面振动中获得的地震能量

V. Sastry, G. R. Chandra
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引用次数: 3

摘要

该国对煤炭和矿物的需求增加,使人们对环境问题产生了兴趣,这些问题可能有潜在的危害和造成干扰。矿山和采石场爆破引起的地面振动是研究人员关注的一个重要环境问题。很明显,爆破只利用了一小部分爆破总能量来破坏岩体,而其余的能量都被浪费了。大量的能源被浪费,导致各种环境问题,如地面振动、空气过压和飞岩。爆破引起的地面振动不能完全消除,但可以通过适当的爆破方法尽可能地将其最小化。人们已经做了大量的工作来识别地面振动,并根据地面振动强度评估爆炸性能。然而,关于地震能量以及利用地震能量来理解爆炸弹性能的研究并不多。本文尝试利用DADiSP和Advanced Blastware软件,在石灰岩、砂岩和地下煤矿三种不同地层中,利用信号处理技术估算离爆炸地点不同距离的地震能量耗散。利用地面振动监测仪采集了石灰岩矿山116个爆炸振动事件,地下煤矿96个爆炸振动事件,砂岩矿山43个爆炸振动事件,用于地震能量信号处理分析。在三个正交方向上记录爆炸引起的地面振动,每个方向收集2100-2500个粒子运动样本。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of seismic energy obtained from blast induced ground vibrations using signal processing computation techniques
Enhanced demand for coal and minerals in the country has developed an interest on the environmental problems, which may have potential harm and cause disturbance. Ground vibrations generated due to blasting operations in mines and quarries are very important environmental aspect to be looked into by the researchers. It is clear that a small amount of total explosive energy is being utilized in blasting for breakage of rock mass while the rest is being wasted. The amount of energy which is wasted causes various environmental issues such as ground vibrations, air over pressure and fly rock. Ground vibrations caused by blasting cannot be totally eliminated, yet they can be minimized as far as possible through a suitable blasting methodology. Considerable amount of work has been done to identify ground vibrations and assess the blast performance in terms of the intensity of ground vibrations. However, not much research has gone into the seismic energy and utilizing this energy in understanding performance of blast rounds. In this paper, an attempt was made for the estimation of seismic energy dissipated at different distances from the blast site using Signal Processing Techniques with the help of DADiSP and Advanced Blastware software in three different formations, viz. Limestone, Sandstone and Underground Coal Mine. In total, 116 blast vibration events from Limestone Mines, 96 blast vibration events from Underground Coal Mine and 43 blast vibration events from Sandstone Mines were collected using ground vibration monitors for Signal Processing Analysis of Seismic Energy. Blast induced ground vibrations were recorded in three orthogonal directions collecting 2100–2500 particle motion samples for each.
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