本文選題：盾構(gòu)施工 + 組段劃分��； 參考：《北京交通大學(xué)》2015年碩士論文

【摘要】：為了解決日趨惡化的城市道路交通問題,世界各國(guó)普遍開始使用立體化快速軌道交通的方式來(lái)代替?zhèn)鹘y(tǒng)的平面交通方式。目前,許多大城市逐漸形成了以地下鐵路交通為主,多種軌道交通并存的城市軌道交通體系。其中,占據(jù)主體地位的地下鐵路交通具有噪音小、速度快、運(yùn)輸量大、污染輕、能耗低等優(yōu)點(diǎn)。盾構(gòu)工法在地鐵隧道建設(shè)中得到了越來(lái)越廣泛的應(yīng)用。但是盾構(gòu)施工過程中存在著大量的風(fēng)險(xiǎn)因素需要控制,例如盾構(gòu)施工控制參數(shù)設(shè)置不當(dāng)引起的地表塌陷,盾構(gòu)操作不當(dāng)引起盾構(gòu)刀具劇烈磨損、崩齒等。這些由于盾構(gòu)施工過程中施工控制參數(shù)設(shè)置不當(dāng)、操作失誤或者判斷錯(cuò)誤所導(dǎo)致的風(fēng)險(xiǎn)隨時(shí)都有可能發(fā)生,必須對(duì)盾構(gòu)施工過程進(jìn)行有效的安全風(fēng)險(xiǎn)控制、管理,才能有效規(guī)避盾構(gòu)施工過程中的風(fēng)險(xiǎn),保證盾構(gòu)施工安全。因此,尋求一種既能夠考慮盾構(gòu)隧道圍巖特性,又能考慮到環(huán)境風(fēng)險(xiǎn)條件的盾構(gòu)隧道安全風(fēng)險(xiǎn)組段劃分方法,對(duì)盾構(gòu)施工過程的安全風(fēng)險(xiǎn)控制有重要的意義�？梢哉f(shuō)組段劃分是盾構(gòu)施工過程風(fēng)險(xiǎn)控制的基礎(chǔ),只有確定合理的組段劃分理論和方法,才能確定盾構(gòu)主要施工參數(shù)的控制范圍,從而有效地規(guī)避盾構(gòu)施工過程中的風(fēng)險(xiǎn)。 本文在參考大量文獻(xiàn)的基礎(chǔ)上,以蘭州地鐵1號(hào)線1期工程盾構(gòu)區(qū)間為工程背景,對(duì)砂卵石地層盾構(gòu)施工掘進(jìn)參數(shù)進(jìn)行了分析研究。主要工作如下： 首先對(duì)地勘資料進(jìn)行整理,通過對(duì)地勘報(bào)告、工程平面圖、地層縱面圖等資料的整理、分析,基于盾構(gòu)隧道穿越的地層特性、地下水位與隧道縱斷面的相互關(guān)系、盾構(gòu)隧道覆土厚度、盾構(gòu)隧道周邊環(huán)境及其狀態(tài)等以上幾點(diǎn)原則對(duì)盾構(gòu)區(qū)間進(jìn)行組段劃分。 其次,通過閱讀大量文獻(xiàn),了解盾構(gòu)施工控制參數(shù)的影響因素,對(duì)盾構(gòu)施工主要控制參數(shù)(土倉(cāng)壓力、刀盤扭矩、推力等)進(jìn)行理論計(jì)算。 最后,以工程試驗(yàn)為背景,通過數(shù)值模擬以及理論計(jì)算對(duì)盾構(gòu)施工控制參數(shù)進(jìn)行優(yōu)化。
[Abstract]:In order to solve the worsening problem of urban road traffic, three-dimensional rapid rail transit has been widely used in the world to replace the traditional plane traffic. At present, many big cities have gradually formed the urban rail transit system, which is dominated by the mass transit and co-existing with many kinds of rail transit. Among them, mass transit has the advantages of low noise, high speed, large volume of transportation, light pollution, low energy consumption and so on. Shield tunneling method has been applied more and more widely in subway tunnel construction. However, there are a lot of risk factors to be controlled during shield construction, such as surface collapse caused by improper setting of shield construction parameters, severe wear and tear of shield cutting tools due to improper shield tunneling operation, tooth collapse and so on. These risks may occur at any time due to improper setting of construction control parameters, misoperation or misjudgment during shield construction, so effective safety risk control and management must be carried out during shield construction. Only in order to effectively avoid the risks in the shield construction process, to ensure the shield construction safety. Therefore, it is of great significance for the safety risk control of shield tunneling to seek a method that can not only consider the surrounding rock characteristics of shield tunnel, but also take into account the environmental risk conditions. It can be said that section division is the basis of risk control in shield construction process. Only by determining reasonable theory and method of section division can the control range of main construction parameters of shield tunneling be determined and the risk in shield construction process be effectively avoided. Based on a large number of references and taking the first phase shield section of Lanzhou Metro Line 1 as the engineering background, this paper analyzes and studies the tunneling parameters of sand pebble stratum. The main tasks are as follows: First of all, the geological prospecting data are arranged and analyzed through the collation of geological prospecting report, engineering plan, stratum vertical plane, etc., based on the stratigraphic characteristics of shield tunneling, the relationship between underground water level and longitudinal section of tunnel, The section of shield tunnel is divided according to the above principles, such as the overlying soil thickness of shield tunnel, the surrounding environment and its state of shield tunnel. Secondly, through reading a large number of documents, the influence factors of shield construction control parameters are understood, and the main control parameters (earth chamber pressure, cutter head torque, thrust, etc.) are calculated theoretically. Finally, the control parameters of shield construction are optimized by numerical simulation and theoretical calculation.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U455.43

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