1) preliminary supporting system
初期支护系统
2) early support
初期支护
1.
Combined with practical project,it introduces the fixing of constructing plans,elaborates the constructing methods during the secondary bricking course after the formation of large cross-section digging contacting line early supporting structure,discusses constructing supervision of each supervising item in the cave,so as to offer reference for familiar project.
结合工程实例,对其施工方案的确定进行了介绍,着重阐述了采用暗挖法施工的联络线多变大断面初期支护结构形成后,二次衬砌形成过程的施工方法,并对洞内各监测项目的施工监测进行了论述,从而为其他类似工程提供了参考。
2.
Analyzing reasons of large deformation of early supports of Liangfengya Tunnel,the author states treatment measures of large deformation of early supports of the tunnel.
通过凉风垭隧道初期支护大变形的原因分析,阐述了隧道初期支护大变形的整治措施。
3) preliminary bracing
初期支护
1.
Aften preliminary bracing,support deformation and cracking occurred in partial sections.
初期支护后部分地段发生支护变形、开裂。
2.
Combined with major works of covered culverts in south-to-north water transfer project, from reinforcement treatment, soil excavation, preliminary bracing, monitoring measurement and other aspects the construction technology of shallow underground excavation method is introduced in order to promote the application of this method in hydraulic tunnel works in city.
结合南水北调西四环暗涵主体工程的概况及其工程特点,从地层加固、土体开挖、初期支护、监控量测等方面对浅埋暗挖法施工技术进行了阐述,以推广该技术在城市水工隧洞施工中的应用。
3.
Taking the Fenghuangling Tunnel as an example,this paper introduces the bracing method for the loess tunnel and the requirements for the apparent smoothness quality control of the preliminary bracing,and connecting with the construction practice,puts forward some suggestions and opinions.
以凤凰岭隧道为例,详细介绍了黄土隧道的支护方法及初期支护外观平整度质量控制要求,并结合施工实践,提出了一些建议。
4) primary support
初期支护
1.
Wide span underground chamber excavation and primary supportin intensely weathered rocks;
强风化岩中大跨度硐室开挖与初期支护
2.
Treatment technology of clearance-intrusion in primary support of Huangguoshu tunnel;
黄果树隧道初期支护侵限处理技术
3.
FLAC~(3D) program and its applications in couple problem between primary support design and rock wall condition in double-arch tunnel;
FLAC~(3D)在隧道初期支护与原岩条件的“耦合”问题的应用
5) initial support
初期支护
1.
Optimum analysis on the initial support structure of double-arch tunnel in partial pressure;
偏压连拱隧道初期支护结构优化研究
2.
Discussion on influence of initial support to stability and deformation of surrounding rock mass in soft rock tunnel;
初期支护对软岩隧道围岩稳定性和位移影响分析
3.
Initial Support for Qinling Railway Tunnel Constructed by Open TBM;
秦岭隧道开敞式TBM施工的初期支护
6) preliminary support
初期支护
1.
This paper based on a engineering example about Nanwutai tunnel(The fifth bidding section) s construction,including excavation,preliminary support,measurement in-situ and secondary lining,the application of NATM theory in the tunnel s design and construction is introduced.
结合西安南五台隧道(第五标段)的开挖、初期支护、现场量测及二次衬砌施工的工程实例,介绍了新奥法在隧道设计施工中的应用。
2.
But considering the actual traffic need,in the course of construction,we widen the tunnel,meanwhile the tunnel has been constructed by the preliminary support.
因受各种条件限制隧道设计为窄隧道,但在施工过程中考虑到实际交通量需要拓宽隧道,而此时已进行了初期支护,如何充分利用旧支护体系并进行改造成为施工的关键步骤。
补充资料：地下工程施工支护
地下工程施工支护
temporary support for underground works
cilxr‘】90119〔一}1户11Q，14一()仁}11日·111{1一地下工程施工支护(rom一)orarys、，I)I，‘，rtf〔，runderground work、)在地下1几程施1‘!，为维护围岩稳定，保证施1_安全的临时措施地下l_程施I_支护可以在围岩出现有害的松弛变形之前迅速提供-定抗力，改善围岩受力条件、控制开挖后的1祠岩变形增长，支承落石，保护施工安全施工_支护的结构.迈常要求有足够强度和稳定性，能适时控制变形和承载变形后所产生的载荷，‘j围岩接触良好并允许在支护后围岩能产生有限变形以利用其自身承载能力，结构简单，造价低廉.施卜方便.所占空间较小 地下工程施J几的支护类型.根据地质条件、洞室结构、断面尺寸、开挖方法、围岩暴露时间等因素决定.一般分描喷支护和构架支撑两类 锚喷支护有锚杆支护、喷混凝土支护、锚杆喷混凝土与金属网联合支护及预应力锚索深孔锚固支护等。①锚杆支护。单一锚杆支护施工方便.能‘川月宕紧密接触及时提供抗力。系统锚杆一般布置成正方形或梅花形，锚人深度较浅.间排趴约为深度之平且不大于1.sm。局部锚杆深度要超过围岩松弛区必喷混凝上支护。能对不稳定围岩提供支护抗力.封闭旧岩表而和充填裂隙，阻隔涌水。护锚喷联合支护。锚杆深人稳定岩层.围岩松弛范围较大或高边墙不稳定洞室常采川长短锚杆相结合表面喷混凝土支护。如预应力锚索支护。索体用钻孔穿过lFl岩浴动面或不稳定区进行预张拉，并维持所需载荷对岩体施加压力.适川于大跨度洞室顶拱、高边墙、岩柱、岩墙、洞脸及高边坡等不稳定岩体。(见描喷) 构架支撑要求支撑材料经济.易于拆装.连接牢固，安全可靠。按结构型式分拱形、梯形、扇形、多边拱形和棚架等几种。按制作材料分钢、预制混凝上和木3类。①钢支撑。由立柱、顶梁、垫板、于众杆、连接件及楔块组成，适用于围宕稳定性差的‘!，、小卿断面地下工程。在地压力不稳定和lFl岩变形城大的软弱宕层或断层破碎带，也有用可缩性金属支架的，钢支撑承载能力大.坚固耐久.体积小.构件轻.但成本较高卫预制混凝土支撑。适川于中、小利断而地卜!_程、j〔优点是成本低，但构件笨重，运输、安装困难_·:飞木支撑适用于中、小型断面和进行分部汗挖的地卜l_程「、J七优点是重量轻，加工、安装方便，出现险情前有征候预示且易抢工，但木材强度较低。④棚架。各类支撑材料均可制作，常用在地下工程进出口及井下导洞出渣处，一般顶部铺设垫板和柔性材料或石渣，梁的端部除临空面外均与岩壁顶紧。 所有地下工程施工的支撑柱基均安置在平整岩面或加设的垫梁、垫板上，每排支撑各构件保持在同一平面且与洞轴垂直，各排间相互连接成整体，支撑与围岩之间用背板、楔等背材塞紧，并在施工过程经常检查支撑受力情况。使用完毕及时拆除，预计支撑受力后难以拆除时，要将支撑设在建筑物设计断面以外或用非有机质材料制成的支撑。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条