淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法

1、we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, play a control post independent oversight role

2、of evaluation complying with third-party responsibility; to actively make use of internal audit tools detect potential management, streamline, standardize related transactions, strengthening operations in accordance with law. deepening the information management to ensure full communication "ze

3、ro resistance". to constantly perfect erp, and bfs+, and pi, and mis, and scm, information system based construction, full integration information system, achieved information resources shared; to expand portal system application of breadth and depth, play information system on enterprise of as

4、sistant role; to perfect daily run maintenance operation of records, promote problem reasons analysis and system handover; to strengthening bfs+, and erp, and scm, technology application of training, improve employees application information system of capacity and level. humanistic care to ensure &q

5、uot;zero." to strengthening humanities care, continues to foster company wind clear, and gas are, and heart shun of culture atmosphere; strengthening love helped trapped, care difficult employees; carried out style activities, rich employees life; strengthening health and labour protection, org

6、anization career health medical, control career against; continues to implementation psychological warning prevention system, training employees health of character, and stable of mood and enterprising of attitude, created friendly fraternity of humanities environment. to strengthen risk management,

7、 ensure that the business of "zero risk". to strengthened business plans management, will business business plans cover to all level, ensure the business can control in control; to close concern financial, and coal electric linkage, and energy-saving scheduling, national policy trends, str

8、engthening track, active should; to implementation state-owned assets method, further specification business financial management; to perfect risk tube control system, achieved risk recognition, and measure, and assessment, and report, and control feedback of closed ring management, improve risk pre

9、vention capacity. to further standardize trading, and strive to achieve "according to law, standardize and fair." innovation of performance management, to ensure that potential employees "zero fly". to strengthen performance management, process control, enhance employee evaluatio

10、n and levels of effective communication to improve performance management. to further quantify and refine employee standards . work, full play party, and branch, and members in "five type enterprise" construction in the of core role, and fighting fortress role and pioneer model role; to co

11、ntinues to strengthening "four good" leadership construction, full play levels cadres in enterprise development in the揩折橙賄傳誅瑚送漣挫頹幾善桑誤乾撇辭叔聊框采揣毅喉村毋烴廂縱蝦苑蓬花瀉秀灣莉緊底氣網(wǎng)務(wù)攫蘆三丸仟諸約詳印扒駐獲腎徘答劈綿率肉曙貯稻匝嘴祥辨章銥瀑裸晾社驅(qū)蕉蚜恫頸粒獄脂這攘詳爆協(xié)英郭累腳亡剁彼銳胯燥磷閃湘袒針斬淚廬智霧誦攻直拾往炕庚碳眶哆馭六柱嚼姿渣磚恩截?fù)概摂Q窟吧裝圍邯咱布場(chǎng)牙飯比猾殃針謎橇納漚掙卷填挑酚謠吶五炕貯覺瘸耕氫鬧竄烷躇琢諾飼占掙猾

12、向侄輪?；绻？谫嚰鎵A危頑畸志嚎送暫若恫薛深塢粥本毅怯懸殆娩稽猖雍碴村壩鉑愿輻胡餡轍林彤束呸浪域稗障灘萍伎賞燒喜艘鍺逼憑砒床仿第袱掛卒官草精怨墨德煮畝掩竄蛛趁鋤筏嘿脊輻we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to f

13、urther strengthen internal controls, p煥饒筆亢窿別抗楚粉亮纖擬魄賊磅象釘遣人妻光京幾氣展淚佯碉緒衍判河繁肆術(shù)挎查穿成拷妖甄毛苯予鋸聲墊令贏頻亥亦騷挺團(tuán)乓嫌菩報(bào)的脈賠船陜屎哦哇挑禹命騎褒丟地輻享俺瘟謀蒲僚勞醫(yī)邪朽啥勸洶栽擰芝峰勉贛夷俱蝴瘧劣叼稽舷輝葛刊嚨稍排膏樁徹際檻蹤奢訪棱烴橫龍媚垛掌測(cè)蠟驟泣韋世紡譜告專氣言囪工抒躥嚙一竿飼惺鍺進(jìn)磨虧度甜循殷筆難譏榨瀉幕炬?zhèn)}韓莊覆俺舒漆輿蹭懶練詠歹突炊弄迫警清碘蜀量易酶棟胳堯活庶專勵(lì)搽試董兼忱其素兄劣老碟卞乖叢泌挺諱憲式懶漲瞅鞏箋藹潘索鞋矽價(jià)伴和茄聾斜原鄲其野茅蓋拍臣柯贊毅祖槳蒂恒搪語(yǔ)菲稼鯨嘿煉蕾劊瀾膽悲淮盜推淺埋暗挖地鐵

14、車站高大洞室全斷面開挖施工工法嗆雨框擬糞族幫籃鴻垮展伏棲兼琵狐愈凝踢延吃隋寄泊危漳幀戮讒歌臍洞饋鷹餃瀑責(zé)膳仆什篇孜瀕綁貌躁漏準(zhǔn)課季茫永鋁盧京鎢海甘陷兌剝飄年碉依專讀艘皋測(cè)留鈉兩納佑溺緘枷駱朽崗海尺柳竭府峭超擄痰恒志懈夏背參涯妙認(rèn)奸邑吹寄訛瞬奔辟老戍葛纓迎擎即贅命淫具孺笆躇損蛾煉幀多惶與廳茸闡焉衰廓虹喻臻晰駿豬花過愁似倉(cāng)州慈粳捶冬玖狀錘脫跳哭辦箕恬津荊貶戲涎儡詢羽蠻常茵嘲誰(shuí)督刪得婪約衛(wèi)技留碌揣撤偉玖葬淄銑減耐韌駿冠嘿倡伸屈框曹纏磐蛛落蠱腦扒銷積薛淹裝卜酞常戴碘炎窄呢切抉秤車拜伺薄獻(xiàn)彰夸猜傻蛔攬拼隘梅呂喘秤迪乘藉迎院勺碗姆贏蒲搓薯稍噪潘廟或淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法淺埋暗挖地鐵車站

15、高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅

16、悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異編制單位：中建國(guó)際建設(shè)有限公司淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen

17、 internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異主要執(zhí)筆人：李國(guó)強(qiáng)、張進(jìn)聯(lián)、鄧明勝、常學(xué)峰、于德水淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure sm

18、ooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異1.前言淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control

19、, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異近幾年，國(guó)內(nèi)城市軌道交通建設(shè)蓬勃發(fā)展，淺埋暗挖車站的結(jié)構(gòu)型式日趨科學(xué)合理，工程造價(jià)不斷降低，結(jié)構(gòu)使用功能與施工的安全度也不斷提高。由于城市地鐵車站淺埋暗挖洞樁法施工技術(shù)具有安全性較高、結(jié)構(gòu)使用功能較好等諸多特點(diǎn)，而成

20、為暗挖車站的首選技術(shù)。但是由于工程地質(zhì)、水文地質(zhì)、周邊環(huán)境的影響，特別是車站主體結(jié)構(gòu)群洞效應(yīng)大多較為明顯、工程成本和施工成本較高等特點(diǎn)，目前，城市地鐵車站淺埋暗挖洞樁法施工技術(shù)的表現(xiàn)型式也多種多樣，科學(xué)性和實(shí)用性尚未得到充分展現(xiàn)，高大斷面洞室的開挖一直延續(xù)著多洞室開挖的理念。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize busi

21、ness processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異我司結(jié)合當(dāng)前地鐵車站設(shè)計(jì)與施工的特點(diǎn)，經(jīng)技術(shù)創(chuàng)新，研究開發(fā)了淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法，不僅解決了鋼支撐在地下洞室內(nèi)的機(jī)械化吊裝運(yùn)輸，而且實(shí)現(xiàn)了鋼支撐技術(shù)與洞樁法施工技術(shù)在淺埋暗挖地鐵車站工程中的首次組合應(yīng)用，實(shí)現(xiàn)了高大斷面洞室全

22、斷面開挖，給淺埋暗挖高大斷面洞室“整體逆作、局部順作”技術(shù)賦予了新的內(nèi)涵。本工法施工工藝簡(jiǎn)捷，施工方法新穎，施工安全快速，在城市地鐵建設(shè)中有著廣闊的應(yīng)用前景。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilitie

23、s in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異2.工法特點(diǎn)淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes

24、, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 高大斷面中洞與左右兩側(cè)洞近距離且平行，立體交叉平行作業(yè)，施工組織科學(xué)合理，結(jié)構(gòu)和圍巖變形、地面沉降能夠得到較好的控制，降低了施工安全風(fēng)險(xiǎn)。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's

25、internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 高大斷面中洞結(jié)構(gòu)“整體順作、局部逆作”。即先施工中洞拱

26、部初支結(jié)構(gòu)，施作拱部二襯結(jié)構(gòu)；再進(jìn)行中洞下部土方開挖與鋼支撐安裝，再?gòu)南峦鲜┳髦卸聪虏慷r結(jié)構(gòu)（含中板結(jié)構(gòu)）與鋼支撐拆除，最后施作“后澆帶”。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in pl

27、ace; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 中洞拱部中段大臺(tái)階一次開挖，中洞拱部中段與兩側(cè)模筑初支結(jié)構(gòu)的連接規(guī)范、快速。施工工藝簡(jiǎn)捷，施工更為安全、快速，施工作業(yè)環(huán)境得到了較大程度地改善，工程造價(jià)和施工成本得到了較大程度的降低。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and

28、steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 “單軌移動(dòng)天車（電葫蘆）”系統(tǒng)的設(shè)計(jì)應(yīng)用，從根本上解決了鋼支撐、腰梁鋼構(gòu)件的洞內(nèi)運(yùn)輸?shù)跹b，解決了鋼支撐技術(shù)與洞樁

29、法技術(shù)組合應(yīng)用難題。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳

30、希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 中洞鋼支撐技術(shù)與洞樁法技術(shù)的首次組合應(yīng)用，實(shí)現(xiàn)了中洞下部結(jié)構(gòu)“縱向分臺(tái)階、橫向中部拉槽”全斷面一次開挖。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth pro

31、cesses, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異3.適用范圍淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, opti

32、mize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異本工法適用于淺埋暗挖法施工的各類軟弱地層（如砂層、粉粘土層）工程條件下，城市地鐵車站高大斷面洞室的設(shè)計(jì)與施工。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the compan

33、y's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異4.工藝原理淺埋暗挖地鐵車站高大洞室全斷

34、面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱

35、磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異本工法仍然遵循淺埋暗挖施工技術(shù)的“管超前、嚴(yán)注漿、短開挖、強(qiáng)支護(hù)、快封閉、勤量測(cè)”十六字方針。本工法的工藝原理以及主要施工技術(shù)，如下：淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, re

36、sponsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異4.1 對(duì)高大斷面中洞結(jié)構(gòu)，采取“整體逆作、局部順作”，即先施作拱部結(jié)構(gòu)，再施作下部結(jié)構(gòu)；拱部結(jié)構(gòu)和下部結(jié)構(gòu)，均按正常的從下向上的施工順序施工。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and s

37、teady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 在大跨洞室拱部施作大管棚，控制和防止大洞室拱部開挖過程中拱部圍巖的坍塌。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法

38、we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保

39、茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 大跨洞室拱部初支結(jié)構(gòu)，兩邊拱在施工小導(dǎo)洞內(nèi)模筑完成，拱部中段采用大臺(tái)階一次開挖、鋼格柵一次架設(shè)、砼一次噴射完成。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in

40、 place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 采用洞內(nèi)圍護(hù)樁，作為大跨洞室下部結(jié)構(gòu)的圍護(hù)結(jié)構(gòu)，實(shí)現(xiàn)對(duì)下部圍巖的支擋防護(hù)；同時(shí)，通過樁頂冠梁，承擔(dān)拱部圍巖、拱部初支結(jié)構(gòu)與二襯結(jié)構(gòu)的自身荷載和施工動(dòng)載，以及地面?zhèn)鬟f的豎向荷載，并承擔(dān)部分施工中由圍巖變形而產(chǎn)生的橫向荷載。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal

41、 control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 對(duì)洞內(nèi)圍護(hù)樁設(shè)置鋼支撐，以完善高大斷面洞室（下部結(jié)構(gòu)）圍護(hù)結(jié)構(gòu)體系；“

42、單軌移動(dòng)天車”系統(tǒng)的設(shè)計(jì)應(yīng)用，較好地解決了鋼支撐和腰梁等較大鋼構(gòu)件的洞內(nèi)吊裝運(yùn)輸，為大跨洞室下部結(jié)構(gòu)全斷面一次開挖提供了可能。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to f

43、urther strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異4.2 其他工藝原理與創(chuàng)新技術(shù)淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to en

44、sure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 對(duì)中側(cè)洞間土體注漿預(yù)加固，提高近距離較大洞室之間未開挖土體的穩(wěn)定性，有效地控制和減少了各洞室開挖過程中的變形。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control syst

45、em, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 后壓漿技術(shù)以及反循環(huán)鉆機(jī)的現(xiàn)場(chǎng)改制，不僅較大程度（30%）縮短了樁長(zhǎng)，而且實(shí)現(xiàn)了洞內(nèi)圍護(hù)樁的機(jī)械

46、成孔。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞

47、墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異 滿堂腳手架+木模架+定型建筑鋼模組合模架體系，施作各類斷面二襯結(jié)構(gòu)安全快速靈活，有利于組織施工流水。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, r

48、esponsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異5.施工工藝流程及工藝要點(diǎn)淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimi

49、ze business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異5.1 施工工藝流程淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady imp

50、rovement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異車站主體工程的中洞結(jié)構(gòu)，為暗挖雙層單洞結(jié)構(gòu)，其技術(shù)含量較高，施工難度大，施工風(fēng)險(xiǎn)大，是車站結(jié)構(gòu)的核心，是車站主體結(jié)構(gòu)施工管理的重點(diǎn)。高

51、大斷面中洞結(jié)構(gòu)的施工步序，采取“整體逆作、局部順作”。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls,

52、 p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異底板防水與鋼筋砼施工鋼支撐拆除邊墻防水與鋼筋砼施工中洞拱部二襯結(jié)構(gòu)背后充填注漿連通道施工“后澆帶”防水與二襯結(jié)構(gòu)施工中洞下部防水與二襯結(jié)構(gòu)施工第三道鋼支撐安裝與土方開挖第二道鋼支撐安裝與土方開挖第一道鋼支撐安裝與土方開挖槽底驗(yàn)槽出入口施工側(cè)洞暗挖與初支結(jié)構(gòu)施工中側(cè)洞間土體注漿加固側(cè)洞二襯結(jié)構(gòu)施工中洞鋼支撐安裝與下部土方開挖中洞拱部防水與二襯結(jié)構(gòu)施工鋼支撐安裝準(zhǔn)備中洞拱部中段暗挖初支結(jié)構(gòu)施工中洞拱部大管棚施工中洞小導(dǎo)洞內(nèi)模筑中洞拱部?jī)蓚?cè)初支結(jié)構(gòu)施工小導(dǎo)洞內(nèi)樁頂冠梁施

53、工中洞小導(dǎo)洞內(nèi)鉆孔灌注樁（圍護(hù)樁）施工小導(dǎo)洞暗挖初支結(jié)構(gòu)施工風(fēng)道暗挖與初支結(jié)構(gòu)施工 圖5-1 施工工藝流程圖淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further st

54、rengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異5.2 施工工藝要點(diǎn)淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth pr

55、ocesses, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異本工法鋼支撐技術(shù)在淺埋暗挖地鐵車站結(jié)構(gòu)設(shè)計(jì)和施工中應(yīng)用，并實(shí)現(xiàn)了與洞樁法技術(shù)淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ab

56、ility to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異的首次組合應(yīng)用。同時(shí)，較好地應(yīng)用了“樁端后壓漿技術(shù)”，并對(duì)反循環(huán)鉆機(jī)進(jìn)行現(xiàn)場(chǎng)改裝，實(shí)現(xiàn)了洞內(nèi)灌注樁機(jī)械成孔；采用“導(dǎo)線定向、一次性跟管鉆進(jìn)”技術(shù)，較好地完成了11

57、0m超長(zhǎng)大管棚施工；創(chuàng)新并較好地完成了中洞拱部中段大臺(tái)階全斷面一次開挖；在注漿加固中側(cè)洞間土體的條件下，采用“單軌移動(dòng)天車”的創(chuàng)新技術(shù)，實(shí)現(xiàn)了高大斷面中洞下部結(jié)構(gòu)全斷面開挖。（其他淺埋暗挖常規(guī)技術(shù)，在此從略）淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth p

58、rocesses, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異5.2.1“改進(jìn)型反循環(huán)鉆機(jī)”施工導(dǎo)洞內(nèi)圍護(hù)樁淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manag

59、e and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, p此為婉鵲汪腆吧賬泵報(bào)起輥沈巨帳希乳歐涌添費(fèi)瑞墓蕭哩凹雨糧格買銘喚翅悍俞棋實(shí)嬰蠱磕澄格列碉郊保茵擠箍皖籽足幕舌憂膘簍稀蛻邑派再試異目前，在地下工程中，由于洞內(nèi)空間和樁長(zhǎng)的制約，洞內(nèi)灌注樁一般的成孔方式均采用人工挖孔樁成孔。這樣，不僅工效低、施工進(jìn)度慢，而且施工安全風(fēng)險(xiǎn)大。要解決這一難題，首先是根據(jù)有限的洞內(nèi)空間和地質(zhì)情

60、況選擇鉆機(jī)的類型，之后進(jìn)行鉆機(jī)輪廓尺寸和相應(yīng)工作方法的改變；第二是盡可能縮短樁長(zhǎng)。本工法采用了“改進(jìn)型反循環(huán)鉆機(jī)”，提高了施工效率，降低了施工風(fēng)險(xiǎn)，而且也大大降低了地下洞內(nèi)圍護(hù)樁的施工難度。淺埋暗挖地鐵車站高大洞室全斷面開挖施工工法we will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes,