本文關(guān)鍵詞： 爆破地震波 爆破振動(dòng) 波動(dòng)方程 微差延期時(shí)間 干擾降振　出處：《中國鐵道科學(xué)研究院》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著爆破工程在國民基礎(chǔ)建設(shè)中的廣泛應(yīng)用,爆破振動(dòng)對周圍環(huán)境和建筑物的影響也越來越受到人們的廣泛關(guān)注。長期以來,國內(nèi)外學(xué)者對干擾降振的研究看法不一,提出了不同的控制爆破振動(dòng)的觀點(diǎn)。本文主要從理論和試驗(yàn)兩方面對巖石爆破干擾降振進(jìn)行探討,為今后類似工程的爆破施工提供借鑒和參考。本文首先從能夠綜合反應(yīng)爆破地震波傳播過程中振動(dòng)強(qiáng)度的振速機(jī)制出發(fā),研究巖石爆破振動(dòng)的衰減規(guī)律,得出實(shí)現(xiàn)干擾降振的關(guān)鍵在于確定合理的微差延期時(shí)間;然后從錯(cuò)相減振機(jī)理、諧波疊加和球面波的疊加進(jìn)行分析得出微差延期時(shí)間和爆破振動(dòng)主振周期密切相關(guān);進(jìn)而通過深圳地鐵11號線明挖基坑和隧道爆破試驗(yàn)論證了理論分析微差延期時(shí)間的合理性,同時(shí)確定了現(xiàn)場試驗(yàn)條件下的最佳微差延期時(shí)間;在隧道群孔爆破試驗(yàn)基礎(chǔ)上保持最佳微差延期時(shí)間不變,合理地調(diào)整爆破參數(shù),從試驗(yàn)角度證明微差延期時(shí)間是影響干擾降振最重要的因素。
[Abstract]:With the wide application of blasting engineering in national infrastructure construction, the impact of blasting vibration on the surrounding environment and buildings has attracted more and more attention. For a long time, scholars at home and abroad have different views on disturbance and vibration reduction. Different viewpoints of controlling blasting vibration are put forward. In this paper, the disturbance and vibration reduction of rock blasting are discussed from the aspects of theory and experiment. This paper first studies the attenuation law of rock blasting vibration based on the mechanism of vibration velocity which can synthesize the vibration intensity in the process of seismic wave propagation in response blasting, which provides reference and reference for the blasting construction of similar projects in the future. It is concluded that the key to realize disturbance reduction is to determine the reasonable delay time of slight difference, and then from the analysis of the mechanism of staggered phase damping, harmonic superposition and spherical wave superposition, it is concluded that the delay time of slight difference is closely related to the main vibration period of blasting vibration. Then, the rationality of the delay time of slight difference is proved by blasting test of open excavation foundation pit and tunnel of Shenzhen Metro Line 11, and the optimum delay time of differential delay is determined under the condition of field test. On the basis of tunnel group hole blasting test, the optimum delay time of millisecond delay is kept constant, and the blasting parameters are adjusted reasonably. From the point of view of test, it is proved that the delay time of slight difference is the most important factor affecting disturbance and vibration reduction.
【學(xué)位授予單位】：中國鐵道科學(xué)研究院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U455.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 蘇波;高可帥;宋瑞富;;毫秒延時(shí)爆破振動(dòng)疊加作用的數(shù)值模擬研究[J];工程爆破;2012年03期

相關(guān)碩士學(xué)位論文 前1條

1 李瑞濤;爆破地震波疊加規(guī)律實(shí)驗(yàn)研究[D];東北大學(xué);2008年

，

本文編號：1542748