本文關(guān)鍵詞： 花崗巖地區(qū) 地鐵隧道 鉆爆法 振動(dòng)傳播規(guī)律　出處：《工程地質(zhì)學(xué)報(bào)》2014年05期 　論文類型：期刊論文

【摘要】：青島為典型花崗巖地區(qū),地鐵隧道開挖采用鉆爆法。本文首先采用現(xiàn)場(chǎng)實(shí)測(cè)與統(tǒng)計(jì)分析的方法分析了青島地鐵3號(hào)線3個(gè)工點(diǎn)的隧道爆破監(jiān)測(cè)數(shù)據(jù),較為系統(tǒng)地研究了鉆爆法施工條件下地表及鄰近構(gòu)筑物的最大振速、主頻分布與爆破參數(shù)的相關(guān)關(guān)系,采用線性回歸法擬合出包含上述因素的經(jīng)驗(yàn)公式。采用數(shù)值模擬手段,模擬爆破條件下地表及臨近建筑物的振動(dòng)的響應(yīng),并將模擬結(jié)果與實(shí)測(cè)數(shù)據(jù)進(jìn)行對(duì)比,研究主要結(jié)論如下:(1)最大振速隨比例距離基本呈指數(shù)的形式衰減,隨著比例距離的增加,最大振速值逐漸減小;(2)爆破引起的振動(dòng)主頻隨比例距離分布較為隨機(jī),無(wú)法建立兩者之間的數(shù)學(xué)模型,主頻多在20~70Hz范圍內(nèi);(3)建筑物內(nèi)部中三矢量方向上的最大振速均隨著樓層的增高呈一定的增加趨勢(shì),建筑物外部的地表振速要大于內(nèi)部質(zhì)點(diǎn)的速度。
[Abstract]:Qingdao is a typical granite area and underground tunnel excavation adopts drilling and blasting method. In this paper, the monitoring data of tunnel blasting at 3 working points of Qingdao Metro Line 3 are analyzed by the method of field measurement and statistical analysis. The relationship between the maximum vibration velocity, the main frequency distribution and the blasting parameters of the surface and adjacent structures under drilling and blasting construction conditions is systematically studied. The empirical formula containing the above factors is fitted by linear regression method, and the numerical simulation method is used. By simulating the vibration response of the surface and adjacent buildings under blasting conditions, and comparing the simulation results with the measured data, the main conclusions of the study are as follows: (1) the maximum vibration velocity decreases exponentially with the proportional distance, and increases with the proportional distance. The maximum vibration velocity decreases gradually) the main frequency of vibration caused by blasting is more random with the proportional distance, so it is impossible to establish a mathematical model between the two. Most of the main frequencies are in the range of 20 ~ 70 Hz) the maximum vibration velocity in the three vector directions of the building tends to increase with the increase of the floor, and the velocity of the surface vibration outside the building is larger than that of the interior particle.
【作者單位】： 中國(guó)海洋大學(xué)海洋地球科學(xué)學(xué)院;中國(guó)海洋大學(xué)環(huán)境科學(xué)與工程學(xué)院;同濟(jì)大學(xué)巖土及地下工程教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(41202204) 同濟(jì)大學(xué)巖土及地下工程教育部重點(diǎn)實(shí)驗(yàn)室開放研究基金資助項(xiàng)目(KLE-TJGE-B1107)資助
【分類號(hào)】：O382;U455.41

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 章濤;于廣明;邢賓;井征博;楊鑫欣;;城市隧道開挖爆破對(duì)地表建筑物影響的安全評(píng)價(jià)[J];青島理工大學(xué)學(xué)報(bào);2011年05期

2 鄧華鋒;張國(guó)棟;王樂華;鄧成進(jìn);周濟(jì)芳;;某水電站導(dǎo)流隧洞開挖爆破振動(dòng)監(jiān)測(cè)與分析[J];水電能源科學(xué);2010年09期

3 禹海濤;陳之毅;袁勇;朱毅敏;喬恒昌;;拆撐振動(dòng)對(duì)周邊環(huán)境和結(jié)構(gòu)影響的測(cè)試與分析[J];施工技術(shù);2008年07期

4 梁永寬;;巖溶地區(qū)江底隧道施工技術(shù)[J];施工技術(shù);2009年09期

5 孫西o，

本文編號(hào)：1513585