新型土压平衡盾构用泥浆研究
详细信息    本馆镜像全文|  推荐本文 |  |   获取CNKI官网全文
摘要
随着城市轨道交通建设的高速发展,地铁盾构施工以其独特的优势得到了广泛的应用。渣土改良技术作为土压平衡盾构的关键技术之一,在当今盾构的研究中日益受到重视。对盾构土体进行改良所用的改良剂主要为泡沫和泥浆两大类,各自都有其最适宜的地层。而针对于粒径较大的卵砾石地层,泥浆应用较为广泛,但施工现场所用泥浆纯膨润土泥浆,为了提高泥浆粘度,大多增大膨润土用量,这导致泥浆稠度系数过大,流动性差,重新开泵困难等不利因素,并且使泥浆造价升高。为改良现在泥浆在盾构应用中存在的缺陷,本文以北京地铁十号线为工程背景,利用理论分析、室内试验、现场试验等手段,针对砂卵石地层的工程特性,从稳定开挖面和渣土运输两方面入手,通过正交试验优选出了性能良好的泥浆配制方案,并通过现场试验中盾构参数的研究,确定了新型泥浆在工程现场的实用性。论文主要研究成果如下:
     ⑴通过室内试验研究确定了对泥浆具有最佳改良性能的添加剂及其加入量;
     ⑵通过正交试验对不同方案泥浆的性能进行综合分析,并得出具有最优性能的泥浆配制方案;
     ⑶通过室内模拟实验,对工地用泥浆和新型泥浆在卵石/圆砾和砂土中应用时改良效果进行对比分析,评价新型泥浆的改良效果;
     ⑷通过现场试验,分析新型泥浆在盾构现场应用时的盾构参数,并与工地用泥浆进行对比,确定其现场实用性。
     本课题理论与试验相结合,室内模拟试验和施工现场试验相结合,确定了新型泥浆配制方案和其实用性,并对其造价与工地泥浆进行比较,对以后新型泥浆的研究具有一定指导意义。
With the rapid development of city track traffic construction,EPBS(EarthPressure Balanced Shield tunneling) is widely used by its unique advantages.Muck conditioning technology in EPBS, which is one of the key technology, hasbeen paid more and more attention. There are two kinds of muck conditioningagents, one is foam and the other one is slurry, and each have their own mostappropriate layer. But in the larger particle size of gravel stratum, slurry is widelyused. But what is used in construction site is pure betonies slurry. In order toimprove the viscosity of slurries, most increase the dosage of betonies, which led theslurry consistency coefficient is too large, reopen pump becoming difficult,increasing the slurry cost and so on. In order to improve these defects, with theBeijing subway line ten backgrounds, this paper through theoretical analysis,laboratory tests and field test methods, according to the engineering characteristicsof sand and gravel stratum, optimized the best slurry preparation program byorthogonal test. And through the field test research on shield parameters, determinedthe useful of new slurry in EPBS. The main research results of this paper is asfollows:
     (1) Optimized the best additive which has the best Improve performance toslurry by indoor test and determined it’s optimum adding amount;
     (2) Optimized the best slurry preparation program by orthogonal test ondifferent scheme of comprehensive performance analysis of slurry;
     (3) Evaluation of novel slurry amelioration effects through comparison andanalysis of the two kinds of slurry ‘s improvement effects in pebble/round gravel and sand by Indoor simulation test;
     (4) Determined the new slurry’s practical application through analysising ofshield parameters when it is used in EPBS and comparing with the commonslurry by field test.
     By Combining the theory with practice, indoor simulation experiment and fieldtest, this topic determined a novel slurry preparation plan and practicality. And make a cost comparison with site slurry. It may have certain guiding significance to thelater new slurry research.
引文
Babendererde. L. H..(1998)“Developments in polymer application for soil conditioning inEPB-TBMs”[J].Tunnels and Metropolises, Negro J r. and Ferreira (eds.),Balkema,Rotter2dam,vol.2.
    Fran ois Xavier BORGHI, Soil conditioning for pipe-jacking and tunneling, University OFCambridge,2006.
    Feng, Q. L. Soil conditioning for modern EPBM drives. Tunnel.2004,36(12):18-20.
    G Anagnostou and K.Kovori. Face stability conditions with earth pressure balanced shields.Tunnelling and Underground Space Technology.1996,Vol11,No.22,pp165-163.
    Herrenknecht M,Rehm U. Slurry shield technology[C] Internal lecture in Colorado Schoolof mine, U.S.A,2003
    HE Qi-ping. Shield machine type selection,2003,(1):43–47.
    Horn M. Horizontaler Erddruck auf senkrechte Abschluβfl hen von Tunneln.Landeskonferenz derungarischen Tiefbauindustrie, Budapest (Deutsche überarbeitung STUVA,Düsseldorf)(1961).
    L. Langmaack. Europe&Asia: App location of new TBM Conditioning Additives.Technical Paper of MBT International
    Sotiris Psomas, Properties of foam/sand mixtures for tunneling applications, St Hugh'sCollege
    戴燕超,张国京.加泥式土压平衡盾构机及其配套技术研究.市政技术,2005,23(4):244-248.
    高功林.盾构在砂性土层中的施工措施.山西建筑[J].2008,34(14):333.
    韩月旺,钟小春,朱伟,虞兴福.压力舱土体改良对盾构开挖面稳定影响研究.岩土力学(增刊),2007,28:516-520.
    侯晓敏.泥浆配制和指标的测定.施工技术-河南水利与南水北调[J].2008,9:91,93.
    华东,李乐,杜文库.北京典型地层条件下土压平衡盾构施工[J].建筑机械化.2004,27-30.
    俭济斌.多因素试验正交选优法,科学出版社,北京,1976.
    丛恩伟.北京地铁十号线砂卵石地层盾构法隧道施工关键技术[J].铁道标准设计,2008,(12):168-170.
    乐贵平,赵宏伟,周秀普,孟学文.穿越全断面砾石层的盾构施工[J].现代隧道技术.2001,38(5):9-13.
    乐贵平,苏艺.三论北京地区地铁施工用盾构机选型.都市快轨交通[J].2008,21(2):44-48.
    乐贵平,江玉生.北京地区盾构施工技术[J].都市快轨交通.2006,19(2).
    刘仁鹏.土压平衡盾构技术综述[J].世界隧道,2000,(1):1-7.
    孔恒等.砂卵石地层盾构隧道关键施工技术[J].市政技术(增刊),2005,23(12):100
    姜厚停等.土压平衡盾构施工中泡沫改良圆砾地层试验研究.现代隧道技术(增刊),2008:187-190.
    牛生洋,郝峰鸽.YP-2的应用进展[J].安徽农业科学.2006,34(15):3574-3575.
    郭涛.盾构用发泡剂性能评价方法研究,[学位论文],河海大学,2005年
    叶旭洪.砂卵石地层泥水盾构泥浆特性对开挖面稳定性影响研究,[学位论文],北京交通大学,2008年
    申海鹏.新型泥浆对土压平衡盾构土体改良作用评:[硕士学位论文].北京:中国地质大学(北京),2011.
    汪国锋.北京地铁十号线土压平衡盾构土体改良技术应用研究.现代隧道技术,2009,46(4):77-82.
    魏康林.土压平衡盾构施工中理想状态土体的探讨[J].城市轨道交通研究,2007,(1):70.
    魏康林.土压平衡盾构施工中泡沫和膨润土改良土体的微观机理分析.现代隧道技术,2007,4(1):73-77.
    王军利,陈夫山,刘忠.YP-1的应用研究.天津造纸[J].2002,3:10-12.
    王益扬.砂卵石地层土压平衡盾构新型改良剂的研制:[硕士学位论文].北京:中国地质大学(北京),2010.
    朱伟,陈仁俊.盾构隧道施工技术现状及展望(第一讲):盾构隧道基本原理及在我国的使用情况[J].岩土工程界,2001,(11):19-21
    张振宇.盾构法施工技术在我国的应用与发展[J].武汉工程职业技术学院学报.2005,17(4):26-28.
    《正交试验法》编写组.正交试验法,北京国防工业出版社,1976.
    张国京.土压平衡盾构施工中土的塑流化技术[期刊论文]《市政技术》,2005年
    张明晶.土压平衡式盾构施工闭塞问题的发生机理及防治措施研究[学位论文],河海大学,2004年
    周秀普.盾构法施工技术在无水砂卵石地层中的应用.市政技术,2003,21(4):195-203
    朱伟,秦建设,魏康林.土压平衡盾构喷涌发生机理研究.岩土工程学报,2004,26(5):589-593.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700