【摘要】：石油是重要的戰(zhàn)略物質(zhì),更是經(jīng)濟(jì)社會(huì)穩(wěn)定運(yùn)轉(zhuǎn)的潤滑劑,管道運(yùn)輸是當(dāng)下石油運(yùn)送與調(diào)配的主要方式。隨著國家基礎(chǔ)設(shè)施建設(shè)的逐步推進(jìn),在隧道爆破施工中難免會(huì)對(duì)隧道鄰近的輸油管道產(chǎn)生爆破振動(dòng),給管道的安全性帶來了很大的威脅。輸油管道一旦因爆破振動(dòng)而破裂,不僅造成大量的資源浪費(fèi),還會(huì)釋放大量的有害物質(zhì)污染環(huán)境,甚至還會(huì)引發(fā)火災(zāi)等次生災(zāi)害危及人民群眾生命安全。因此,確保輸油管道安全至關(guān)重要。西成客專仙女巖隧道在施工過程中會(huì)對(duì)隧道頂部的輸油管道產(chǎn)生爆破振動(dòng),可能會(huì)危及輸油管道的安全運(yùn)營。本文以此工程背景為基礎(chǔ),利用LS-DYNA軟件建立三維有限元模型進(jìn)行數(shù)值模擬,將模擬計(jì)算結(jié)果與現(xiàn)場實(shí)測數(shù)據(jù)進(jìn)行對(duì)比,驗(yàn)證了模型的準(zhǔn)確性。本文主要分析管道、管周土體、地表土體以及石油的振動(dòng)波形圖,研究管、土、油三者的耦合關(guān)系,分析了不同爆心距和管道內(nèi)壓下的管道振速、地表土體振速以及管道的環(huán)向應(yīng)力、軸向應(yīng)力和當(dāng)量應(yīng)力,發(fā)現(xiàn)管道振速、地表土體振速以及管道當(dāng)量應(yīng)力均隨著爆心距的增大而減小,隨著管道內(nèi)壓的增大而增大。通過曲線擬合的方式得到函數(shù)關(guān)系式,為現(xiàn)場施工提供指導(dǎo),節(jié)約施工成本,保障輸油管道的安全運(yùn)營。
[Abstract]:Oil is an important strategic material and a lubricant for the stable operation of economy and society. Pipeline transportation is the main way of oil transportation and distribution. With the gradual development of the national infrastructure construction, blasting vibration will inevitably occur in the tunnel blasting construction, which will bring a great threat to the safety of the pipeline. Once the pipeline breaks down due to blasting vibration, it will not only cause a lot of waste of resources, but also release a large amount of harmful substances to pollute the environment, and even cause secondary disasters such as fire to endanger the lives of the people. Therefore, it is very important to ensure the safety of oil pipeline. The blasting vibration of the oil pipeline at the top of the tunnel will be produced during the construction of Xicheng Guanghuanyan tunnel, which may endanger the safe operation of the pipeline. Based on the engineering background, a three-dimensional finite element model is established by using LS-DYNA software for numerical simulation. The accuracy of the model is verified by comparing the simulation results with the field measured data. This paper mainly analyzes the vibration waveform of pipeline, soil around pipe, surface soil and oil, studies the coupling relationship among pipe, soil and oil, and analyzes the vibration velocity of pipeline under different burst center distance and pipeline internal pressure. It is found that the vibration velocity of the pipeline, the soil vibration velocity and the equivalent stress of the pipeline decrease with the increase of the distance between the detonation centers, and increase with the increase of the internal pressure of the pipeline, as well as the circumferential stress, the axial stress and the equivalent stress of the pipe. The function relation is obtained by curve fitting, which provides guidance for field construction, saves construction cost and ensures safe operation of oil pipeline.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TE88;U455.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鄭爽英;楊立中;;下穿隧道爆破地震作用下埋地輸氣管道的動(dòng)力響應(yīng)規(guī)律研究[J];爆破;2015年04期

2 鄭爽英;鄒新寬;;下穿隧道爆破振動(dòng)作用下石油管道的安全性評(píng)價(jià)[J];爆破;2015年02期

3 李立云;王成波;韓俊艷;侯本偉;許成順;杜修力;;埋地管道-場地地震反應(yīng)振動(dòng)臺(tái)試驗(yàn)研究的場地響應(yīng)[J];地震工程與工程振動(dòng);2015年03期

4 杜修力;韓俊艷;李立云;;長輸埋地管道振動(dòng)臺(tái)試驗(yàn)設(shè)計(jì)中相似關(guān)系的選取[J];防災(zāi)減災(zāi)工程學(xué)報(bào);2013年03期

5 彭星煜;梁光川;張鵬;喻建勝;何莎;宋日生;;人工爆破地震作用下輸氣管道動(dòng)力響應(yīng)分析[J];天然氣工業(yè);2012年11期

6 楊建華;盧文波;陳明;周創(chuàng)兵;;巖石爆破開挖誘發(fā)振動(dòng)的等效模擬方法[J];爆炸與沖擊;2012年02期

7 張志超;王進(jìn)廷;徐艷杰;;跨斷層地下管線振動(dòng)臺(tái)模型試驗(yàn)研究Ⅱ:試驗(yàn)成果分析[J];土木工程學(xué)報(bào);2011年12期

8 郝婷s，

本文編號(hào)：2226688