本文關鍵詞：土壓平衡盾構(gòu)高含水量渣土出渣技術(shù)研究　出處：《中南大學》2014年碩士論文　論文類型：學位論文

  更多相關文章： 土壓平衡盾構(gòu) 渣土運輸 固液分離 螺旋擠壓過濾 篩分技術(shù)

【摘要】：摘要：在運用土壓平衡盾構(gòu)施工的隧道工程中,當遇到含水量較高的地層時,渣土排出、運輸困難,泥漿飛散在隧道及市內(nèi)交通干線,影響施工環(huán)境和市容環(huán)衛(wèi),產(chǎn)生高昂的清潔費用,而棄土也很難達到環(huán)保部門廢棄物消納標準。土壓平衡盾構(gòu)高含水量地層出渣問題,成為土壓平衡盾構(gòu)施工中亟待解決的問題。 本文在總結(jié)盾構(gòu)出渣運輸技術(shù)與固液分離技術(shù)的基礎上,創(chuàng)新性的提出了隧道內(nèi)預分離泥水的施工方法。本文的主要工作如下： (1)從盾構(gòu)施工法的發(fā)展現(xiàn)狀、施工勘察、盾構(gòu)類型及結(jié)構(gòu)特點等方面,對盾構(gòu)施工法進行了介紹。對土壓平衡和泥水平衡兩種盾構(gòu)的優(yōu)缺點及適用性進行了對比分析,為盾構(gòu)機型的選擇提供了依據(jù)。 (2)通過對盾構(gòu)出渣運輸技術(shù)與泥水平衡盾構(gòu)渣土處理技術(shù)的研究,分析了現(xiàn)有土壓盾構(gòu)渣土運輸方式的優(yōu)劣及存在的問題,結(jié)合盾構(gòu)工程實際,提出了隧道內(nèi)預分離方法需要滿足的要求。 (3)分別對篩分技術(shù)、壓濾技術(shù)、螺旋擠壓技術(shù)三種常見的連續(xù)分離方法進行了可行性研究,選擇出可應用于盾構(gòu)施工的合適設備,并提出其用于盾構(gòu)高含水量渣土隧道內(nèi)預分離和運輸?shù)母倪M設計。 (4)選取最具有可行性的螺旋擠壓過濾機、振動篩兩種設備進行了具體方案設計,實現(xiàn)了隧道內(nèi)渣土泥漿預分離工藝,使盾構(gòu)施工更為潔凈環(huán)保。結(jié)合盾構(gòu)渣土出渣量大、粘性大的特點,為振動篩設備設計了多功能刮離運輸設備,提高了振動篩的處理能力和防堵塞能力。 (5)以某土壓平衡盾構(gòu)施工案例為例,設計了盾構(gòu)整體出渣系統(tǒng)。
[Abstract]:Absrtact: in the tunnel construction with earth pressure balance shield, when the formation with high water content is encountered, the residual soil is discharged, the transportation is difficult, the mud is scattered in the tunnel and the main traffic line of the city. Affecting the construction environment and city appearance and sanitation, resulting in high cleaning costs, and the disposal of soil is difficult to meet the environmental protection department waste acceptance standard, earth pressure balance shield high water content formation slag problem. It is an urgent problem to be solved in the construction of earth pressure balance shield. On the basis of summing up the technology of slag transportation and solid-liquid separation technology of shield tunneling, this paper innovatively puts forward the construction method of pre-separating mud water in tunnel. The main work of this paper is as follows: 1) from the development status of shield construction method, construction survey, shield type and structural characteristics, and so on. The method of shield construction is introduced. The advantages, disadvantages and applicability of earth pressure balance and mud water balance are compared and analyzed, which provides the basis for the selection of shield machine type. 2) through the research on the technology of slag transportation in shield tunneling and mud water balance shield soil treatment technology, the advantages and disadvantages of the existing soil pressure shield residual soil transportation mode and the existing problems are analyzed, combined with the reality of shield engineering. The requirement of pre-separation method in tunnel is put forward. 3) the feasibility of three common continuous separation methods, sieving technology, pressure filtration technology and spiral extrusion technology, were studied, and the suitable equipment which could be used in shield construction was selected. An improved design for pre-separation and transportation of residual soil tunnel with high water content in shield tunneling is proposed. 4) selecting the most feasible spiral squeeze filter and vibrating screen two kinds of equipment to carry on the concrete scheme design, has realized the residual soil mud pre-separation process in the tunnel. The shield construction is more clean and environment-friendly. Combined with the characteristics of large amount of slag and large viscosity of residual soil in shield machine, a multi-function scraping and transportation equipment is designed for the vibrating screen equipment, which improves the handling ability and anti-clogging ability of the vibrating screen. Taking a case of earth pressure balance shield as an example, the whole slag extraction system of shield is designed.
【學位授予單位】：中南大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U455.43

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