【摘要】：隨著城市電力需求的加大,當(dāng)前有限的電力網(wǎng)已無法滿足日益增長的擁擠的城市人口的需求。因此,在當(dāng)前大背景下,興建電壓等級高,網(wǎng)絡(luò)復(fù)雜的電力電纜隧道成為一種趨勢。本文以湘潭中心220kV變配套電纜工程為依托,通過文獻(xiàn)調(diào)研、工程類比、數(shù)值分析等多種手段,對隧道選線、橫斷面設(shè)計(jì)、縱斷面設(shè)計(jì)、隧道主體結(jié)構(gòu)及附屬結(jié)構(gòu)設(shè)計(jì)和現(xiàn)場施工風(fēng)險(xiǎn)控制進(jìn)行了相應(yīng)的研究,主要內(nèi)容與成果如下： (1)湘潭中心變電站電纜隧道,具有埋深淺、地層主要為素填土和砂卵石層、自穩(wěn)能力差、隧道上方市政管線密布以及地表存在交通荷載等特點(diǎn),通過方案比選,確定采用淺埋暗挖法進(jìn)行電力隧道施工； (2)基于工程類比法,結(jié)合地質(zhì)條件,確定隧道走向、橫、縱斷面,并對隧道襯砌結(jié)構(gòu)、分支口段主隧道結(jié)構(gòu)、豎井、防排水系統(tǒng)等進(jìn)行結(jié)構(gòu)設(shè)計(jì)； (3)采用三維數(shù)值軟件對圍巖、拱部加固區(qū)穩(wěn)定性及隧道襯砌結(jié)構(gòu)、分支口主隧道結(jié)構(gòu)、豎井結(jié)構(gòu)安全性進(jìn)行計(jì)算分析,結(jié)果表明：本文設(shè)計(jì)方案滿足要求； (4)總結(jié)了電力隧道施工過程中控制措施,并結(jié)合本工程特點(diǎn),歸納了施工風(fēng)險(xiǎn)源清單,提出了相應(yīng)的風(fēng)險(xiǎn)控制措施及注意事項(xiàng)。
[Abstract]:With the increase of urban power demand, the current limited power grid can no longer meet the increasing demand of the crowded urban population. Therefore, it is a trend to build power cable tunnel with high voltage level and complex network under the current background. In this paper, based on the Xiangtan Center 220kV transformer cable project, through literature investigation, engineering analogy, numerical analysis and other means, the tunnel line selection, cross-section design, vertical section design, The design of the main structure and subsidiary structure of the tunnel and the risk control of the site construction are studied accordingly. The main contents and results are as follows: (1) the cable tunnel of Xiangtan central substation has shallow buried depth. The stratum is mainly composed of plain fill and sand pebbles, with poor self-stability, dense municipal pipelines above the tunnel and traffic load on the ground, etc. Through comparison and selection of schemes, shallow burying excavation method is adopted to carry out electric tunnel construction. (2) based on the engineering analogy method, combined with geological conditions, the tunnel direction, transverse section and vertical section are determined, and the tunnel lining structure, the main tunnel structure of the branch section, the shaft and the waterproof and drainage system are designed. (3) the stability of surrounding rock, arch reinforcement zone, tunnel lining structure, main tunnel structure and shaft structure safety are calculated and analyzed by using 3D numerical software. The results show that the design scheme meets the requirements; (4) the control measures in the construction process of electric power tunnel are summarized, and combined with the characteristics of the project, the list of construction risk sources is summarized, and the corresponding risk control measures and matters needing attention are put forward.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U455.4;TM757.3

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