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| 浅埋湿陷性黄土隧道下穿民居施工技术 | |
| 引用本文： | 冯敏,孙韶峰,林安宁,王勇.浅埋湿陷性黄土隧道下穿民居施工技术[J].隧道建设,2010,30(2):212-215. |
| 作者姓名： | 冯敏 孙韶峰 林安宁 王勇 |
| 作者单位： | 1. 中铁十九局集团兰渝铁路项目部, 甘肃 定西743001； 2. 兰渝铁路有限责任公司, 兰州730050 |
| 摘 要： | 在兰渝铁路黑山隧道出口湿陷性黄土浅埋段下穿民居施工中，综合考虑湿陷性黄土的变形特性，以控制地表沉降变形、保证施工安全为主要目的，采用中管棚配合小导管超前预支护，使用双侧壁导坑法开挖，加密型钢架加强支护，通过围岩监控量测动态调整支护参数，并配套采取初期支护增设套拱、初期支护喷射混凝土变更为模筑(吊模)C45混凝土、增设锁拱锚管等措施，安全顺利通过下穿民居段。 |
| 关 键 词： | 湿陷性黄土隧道 浅埋 下穿民居 中管棚 小导管超前支护 |
| 收稿时间： | 2010-01-04 |
| 修稿时间： | 2010-03-12 |
Construction Technology for Shallow-buried Wet-subsidence Loess Tunnel Running underneath Residential Area |
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| FENG Min,SUN Shaofeng,LIN Anning,WANG Yong.Construction Technology for Shallow-buried Wet-subsidence Loess Tunnel Running underneath Residential Area[J].Tunnel Construction,2010,30(2):212-215. | |
| Authors: | FENG Min SUN Shaofeng LIN Anning WANG Yong |
| Institution: | 1. Lanzhou Chongqing Railway Project Headquarters of China Railway 19th Bureau Group, Dingxi 743001, Gansu, China； 2. Lanzhou Chongqing Railway Co., Ltd., Lanzhou 730050, China |
| Abstract: | The exit section of Heishan tunnel on Lanzhou-Chongqing railway runs in wet subsidence loess and beneath residential area with shallow cover.Advance reinforcement by medium-diameter pipe roof and small-diameter pipes,excavation by double side drift method,reinforcement by closely-spaced steel ribs,monitoring and reinforcement parameters adjustment,as well as assistant primary reinforcement such as cooperated arch and cast-in-situ C45 concrete and arch foot anchoring pipes,are executed.In the end,the tunnel ... |
| Keywords: | tunnel in wet subsidence loess shallow cover tunneling underneath residential area medium-diameter pipe roof advance reinforcement by small-diameter pipes |
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