本文選題：水工隧洞 + 富水溶腔��； 參考：《西南交通大學(xué)》2014年碩士論文

【摘要】：對(duì)于長(zhǎng)大水工隧洞,地下水問(wèn)題伴隨著隧洞建設(shè)的各個(gè)階段。如果遇到不良地質(zhì)、水文條件,加上施工中處理措施采取不當(dāng),地下水往往成為水工隧洞施工、運(yùn)營(yíng)的安全隱患,嚴(yán)重情況下甚至誘發(fā)突水突泥事故,給施工人員和工程設(shè)備造成巨大威脅。 本論文依托工程——木里水電工程輸水隧洞沿線穿越多條富水?dāng)鄬悠扑閹?巖溶水較豐富,施工中可能存在巖溶塌陷和突發(fā)性涌水、突泥問(wèn)題。為此,本論文基于離散元模型,對(duì)該地質(zhì)條件下的注漿堵水技術(shù)及合理注漿圈形式進(jìn)行了研究,研究成果對(duì)具體依托工程和類(lèi)似工程具有一定的參考意義。本文主要研究的內(nèi)容及相應(yīng)成果如下： (1)注漿過(guò)程細(xì)觀力學(xué)模擬 注漿堵水是防止隧洞發(fā)生突水事故的一種有效方法。本文通過(guò)對(duì)不同地質(zhì)條件下,劈裂注漿和滲透注漿的細(xì)觀過(guò)程進(jìn)行研究,揭示了不同圍巖滲透系數(shù)、圍巖壓力條件下,合理的注漿壓力和注漿孔布設(shè)形式。 (2)高壓富水溶腔注漿堵水措施研究 本文針對(duì)高壓富水溶腔位于隧洞上方這一地質(zhì)條件,研究了注漿加固圈滲透性質(zhì)和結(jié)構(gòu)形式等因素對(duì)注漿堵水效果的影響,提出了本依托工程地質(zhì)條件下,合理的注漿圈范圍和厚度。 (3)富水?dāng)鄬幼{堵水措施研究 研究了富水?dāng)鄬游挥谒矶聪路綍r(shí),不同的注漿圈形式和排水泄壓對(duì)隧洞突水的影響,確定了合理的注漿圈形式和排水系統(tǒng)的有效性；然后對(duì)不同斷層傾角條件下隧洞突水過(guò)程進(jìn)行了研究,確定了不同斷層傾角條件下隧洞突水的薄弱位置。
[Abstract]:For long hydraulic tunnels, groundwater problems are accompanied by various stages of tunnel construction. If there are bad geology, hydrological conditions and improper treatment measures in construction, groundwater often becomes a hidden safety hazard in the construction and operation of hydraulic tunnels, and even induces water and mud inrush accidents in serious cases. It poses a great threat to the construction personnel and the engineering equipment. This paper relies on the project-Muli Hydropower Project water conveyance tunnel through many water-rich fault fracture zone, the karst water is abundant, there may be karst collapse and sudden water gushing, mud inrush problem in construction. Therefore, based on the discrete element model, this paper studies the grouting water plugging technology and the reasonable grouting ring form under the geological condition, and the research results have certain reference significance for the concrete supporting engineering and similar projects. The main contents of this paper and the corresponding results are as follows: 1) Meso-mechanical simulation of grouting process Grouting is an effective method to prevent water inrush in tunnel. In this paper, the mesoscopic process of split grouting and permeable grouting under different geological conditions is studied, and the reasonable grouting pressure and grouting hole layout form are revealed under different surrounding rock permeability coefficient and surrounding rock pressure. Study on Water plugging measures for High pressure and Rich Water cavity In view of the geological condition that the high pressure and rich water solution chamber is located above the tunnel, this paper studies the influence of the permeation property and structure form of the grouting reinforcement ring on the grouting water plugging effect, and puts forward a new method based on the engineering geological conditions. Reasonable range and thickness of grouting ring. Study on Water plugging measures for Water-rich Fault grouting When the water-rich fault is located under the tunnel, the influence of different grouting ring forms and drainage pressure on the tunnel water inrush is studied, and the reasonable grouting ring form and the effectiveness of drainage system are determined. Then the water inrush process of tunnel under different fault dip angle is studied and the weak position of tunnel water inrush under different fault dip angle is determined.
【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】：2014
【分類(lèi)號(hào)】：TV554

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本文編號(hào)：1985349