本文選題：爆炸力學(xué) + 擠淤爆破��； 參考：《爆破》2017年03期

【摘要】：為了研究擠淤爆破規(guī)律以及爆破地震波的傳播特性,結(jié)合連云港連云新城示范區(qū)填海造地及基礎(chǔ)設(shè)施建設(shè)項(xiàng)目的擠淤爆破工程實(shí)例,對(duì)擠淤爆破的全過(guò)程進(jìn)行高速攝影錄像和爆破地震波監(jiān)測(cè)與分析。高速攝影再現(xiàn)了擠淤爆破過(guò)程中"水—淤泥—圍堰"系統(tǒng)相互作用的運(yùn)動(dòng)過(guò)程,有效解釋了擠淤爆破過(guò)程中預(yù)埋石料與淤泥置換的作用機(jī)理。利用實(shí)測(cè)的爆破地震波數(shù)據(jù)修正與地形地質(zhì)條件有關(guān)的系數(shù)K和衰減系數(shù)α,獲得了適于擠淤爆破過(guò)程中計(jì)算質(zhì)點(diǎn)振動(dòng)速度隨距離衰減的Sadovsk計(jì)算公式,為有效預(yù)測(cè)類似工程中爆破地震波的傳播規(guī)律特征提供了一種方法參考。擠淤爆破過(guò)程中測(cè)得的爆破地震波主振頻率范圍在8~50 Hz之內(nèi),說(shuō)明淤泥介質(zhì)對(duì)爆破地震波不同頻率成分的傳播具有選擇性:高頻地震波通過(guò)淤泥時(shí)產(chǎn)生大幅度的衰減,低頻地震波通過(guò)淤泥后對(duì)建(構(gòu))筑物造成破壞。
[Abstract]:In order to study the rule of silting blasting and the propagation characteristics of blasting seismic wave, combined with the example of silt blasting in Lianyungang Lianyun Xincheng demonstration area, The whole process of silting blasting is monitored and analyzed by high-speed photographic video recording and blasting seismic wave. The motion process of the interaction between "water-silt-silt-cofferdam" system during silting blasting is reproduced by high-speed photography, and the action mechanism of pre-buried stone and silt replacement during silting blasting is effectively explained. Using the measured blasting seismic wave data to correct the coefficient K and attenuation coefficient 偽 related to the topographic and geological conditions, the Sadovsk formula suitable for calculating the attenuation of particle vibration velocity with distance in the process of silting blasting is obtained. It provides a method reference for predicting the propagation characteristics of blasting seismic waves in similar projects. The main vibration frequency range of blasting seismic wave measured during silting blasting is less than 850 Hz, which indicates that silt medium has selectivity to the propagation of different frequency components of blasting seismic wave: high frequency seismic wave has a large attenuation when it passes through silt. Low frequency seismic waves through the silt cause damage to the building.
【作者單位】： 解放軍理工大學(xué)野戰(zhàn)工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51304218、51508569) 江蘇省自然科學(xué)基金面上項(xiàng)目(BK20151449)
【分類號(hào)】：U655.52

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