The utility model relates to a wind shaft connected with a shield tunnel by a buried air tunnel in collapsible loess combined with pebble soil layer, including a double-layer structure buried air tunnel vertically connected with a shield tunnel, and a vertical open-cut air shaft is connected to the outside entrance of the buried air tunnel; a horizontal medium plate is arranged in the buried air tunnel and divided into upper and lower layers, and a shield tunnel passes through the lower layer of the buried air tunnel, and a two-way shield tunnel is between two-way shield tunnels. A vertical and vertical partition wall is arranged. The utility model first completes the construction of the underground air duct, and then carries out the internal backfilling. After the completion of the backfilling, the shield tunnels of the shield tunnels are normally excavated and through the scope of the underground air duct, and the underground cross passage is used to solve the problem that most of the existing underground tunnel air wells in the existing technology are constructed by open-cut method, resulting in large-scale tunnel air shaft engineering, traffic dredging, and large area of the road surface occupied by pipeline And the long time of ground enclosure.
【技术实现步骤摘要】
湿陷性黄土结合卵石土地层暗挖风道接盾构隧道的风井
本技术属于地铁盾构隧道
,具体涉及一种湿陷性黄土结合卵石土地层暗挖风道接盾构隧道的风井。
技术介绍
地铁隧道由于活塞风功能需求,在车站端头隧道正线上需要设置区间风井,或者由于隧道两端车站距离较大,在隧道中部需要设置区间风井。大部分地铁隧道风井两端接盾构或暗挖法区间隧道,往往明挖法隧道风井兼做盾构始发井、接收井或者暗挖法隧道的施工竖井,为了满足盾构吊出或者始发的功能需求,区间风井工程平面规模较大,施工围挡占用道路面积较大。为了满足以上功能,目前,大部分地铁隧道风井采用明挖法施工,施工期间需要进行交通疏解、管线迁改及地层加固,地铁隧道风井大部分位于闹市区、人流较大、车流密集地区,施工期间社会影响极大。另外,为了防止盾构接收或者始发时洞门涌水、涌砂,对兼做盾构井的明挖风井端头需要进行地层预加固处理措施。在湿陷性黄土地层和卵石土地层中常规的加固方式有地面旋喷桩注浆方式进行端头加固。湿陷性黄土中注浆加固需要加注水泥浆液,但是,湿陷性黄土遇水湿陷,加固过程会引起地面沉降,当工程周边有建(构)筑物时,这种加固工艺可能影响周 ...
【技术保护点】
1.湿陷性黄土结合卵石土地层暗挖风道接盾构隧道的风井,其特征在于:包括与盾构隧道(1)垂直相接的双层结构的暗挖风道(4),暗挖风道(4)外侧洞口接入竖直的明挖风井(5);暗挖风道(4)内设置有水平的中板(10)将其分成上下两层,盾构隧道(1)从暗挖风道(4)下层穿过,双向盾构隧道(1)之间设置有竖直纵向的中隔墙(11)。
【技术特征摘要】
1.湿陷性黄土结合卵石土地层暗挖风道接盾构隧道的风井,其特征在于:包括与盾构隧道(1)垂直相接的双层结构的暗挖风道(4),暗挖风道(4)外侧洞口接入竖直的明挖风井(5);暗挖风道(4)内设置有水平的中板(10)将其分成上下两层,盾构隧道(1)从暗挖风道(4)下层穿过,双向盾构隧道(1)之间设置有竖直纵向的中隔墙(11)。2.根据权利要求1所述的湿陷性黄土结合卵石土地层暗挖风道接盾构隧道的风井,其特征在于:暗挖风道(4)洞口接入明挖风井(5)的位置设置有环向的变形缝(7)。3.根据权利要求1所述的湿陷性黄土结合卵石土地层暗挖风道接盾构隧道的风井,其特征在于:双向盾构隧道(1)垂直穿过暗挖风道(4);左侧盾构隧道(1)右侧设置...
【专利技术属性】
技术研发人员:安应选,刘富强,刘寒,姜燕,盖磊,邹鑫,文保军,朱启东,张艳鸽,白涛,白杨,杨海,余璞,杨硕,周磊,
申请(专利权)人:中铁西安勘察设计研究院有限责任公司,
类型:新型
国别省市:陕西,61
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