臨近邊坡爆破微差時(shí)間優(yōu)化及實(shí)驗(yàn)研究
[Abstract]:With the wide application of blasting technology in engineering, millisecond blasting, as an effective blasting vibration reduction technology, has received great attention. At the same time, the large-scale production of digital detonators also provides a material basis for the realization of precise millisecond blasting. Therefore, the study of the optimal millisecond time of near slope blasting is beneficial to the protection of slope stability. It is of great significance to maintain the safe operation of capital construction projects. In this paper, aiming at the problem that the difference of optimal differential time between different methods is large, taking the project of National Natural Science Foundation (51174147) as the background, based on the indoor concrete slope experiment, Firstly, wavelet packet analysis technique is used to study the wavelet packet energy spectrum of the blasting vibration signal under different millisecond difference time. The energy distribution diagram of the vibration signal in different frequency bands is obtained, and the optimal differential time under the experimental background is obtained. Then, the velocity signal of blasting vibration is treated by differential and de-noising, and the acceleration and standard acceleration response spectrum of the signal are obtained by Fourier transform, and the magnitude of response acceleration is compared. From another point of view, the optimal differential time of the slope model is determined, and the results obtained by the two methods are basically consistent. It is shown that it is feasible and practical to determine the optimal differential time by using the wavelet packet analysis of blasting vibration signal and the comprehensive analysis method of response spectrum analysis. This paper provides a new analysis method for the determination of optimal differential time, in addition, combining with the slope modal analysis, the possible resonance region on the slope is obtained, which has certain guiding significance for the blasting engineering near the slope.
【學(xué)位授予單位】:武漢科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TU751.9;TB41
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 文潮;王占江;李運(yùn)良;門朝舉;陳立強(qiáng);;預(yù)制溝槽對爆破震動(dòng)阻隔效應(yīng)的實(shí)驗(yàn)研究[J];地下空間與工程學(xué)報(bào);2012年02期
2 徐全軍,張慶明,惲壽榕;爆破地震峰值的神經(jīng)網(wǎng)絡(luò)預(yù)報(bào)模型[J];北京理工大學(xué)學(xué)報(bào);1998年04期
3 朱傳統(tǒng);劉宏根;梅錦煜;;地震波參數(shù)沿邊坡坡面?zhèn)鞑ヒ?guī)律公式的選擇[J];爆破;1988年02期
4 吳騰芳,王凱;微差爆破技術(shù)研究現(xiàn)狀[J];爆破;1997年01期
5 彭樂平;露天礦高臺(tái)階深孔爆破施工改進(jìn)實(shí)例[J];爆破;2001年01期
6 甄育才,朱傳云;中遠(yuǎn)區(qū)微差爆破振動(dòng)疊加效應(yīng)影響因素分析[J];爆破;2005年02期
7 郭學(xué)彬;張繼春;劉泉;蒲傳金;;微差爆破的波形疊加作用分析[J];爆破;2006年02期
8 王在泉,,陸文興;高邊坡爆破開挖震動(dòng)傳播規(guī)律及質(zhì)量控制[J];爆破;1994年03期
9 李啟發(fā);爆破地震波對巖質(zhì)邊坡穩(wěn)定性的影響[J];爆破;1995年03期
10 宋光明,曾新吾,陳壽如,吳從師;基于波形預(yù)測小波包分析模型的降振微差時(shí)間選擇[J];爆炸與沖擊;2003年02期
相關(guān)博士學(xué)位論文 前1條
1 李洪濤;基于能量原理的爆破地震效應(yīng)研究[D];武漢大學(xué);2007年
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