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| Optimization Study on Pile of Debris Flow Tunnel Surrounding Rock Reinforcement and Construction Program |
| ZHU Zheng-guo1，ZHU Yong-quan1，WU Guang-ming2, WANG Jin-tao1, WANG Dao-yuan1，LI Xin-zhi1 |
| 1 .Shijiazhuang Tiedao University Shijiazhuang， Hehei 050043，China;2. CCCC Second Highway Engineering Co.Ltd，Xi'an，Shanxi 710065，China |
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Abstract Research purposes: Lanzhou-Chongqing railway Cangyuan tunnel through the debris flow that are loose structure and moisture content , tunnel’s minimum depth is 14 m，its basal stability is poor , and has low bearing capacity of foundation，so the tunnel construct is very difficult and risky. The range of surrounding rock reinforcement of the debris flow tunnel , reasonable construction method and step parameters are identified by the three-dimensional numerical simulation. It provide a scientific basis for the construction and technical guidance，and it is available for the reference design and construction of similar projects.
Research conclusions:(1)A combination of surface grouting curtain grouting ,pipe shed advanced support and inside tunnel face reinforcement can make the control of large deformation zones tunnel construction on debris flow deposits and the force of structure best. Especially the tunnel surrounding displacement control effect is very obvious by reinforced tunnel face strata. (2) In order to ensure the safety and construction period the surface strata and tunnel face grouting large basement arch and tunnel reinforcement root piles supporting measures are used as construction auxiliary measures. Through a variety of construction methods comparison，three-steps-seven-footwork tunneling method is chosen as the final method. (3) The reasonable steps parameters of three-steps-seven-footwork tunneling method are as follows:the appropriate length of the step is about 4 m，not more than 6m each step's height is 3 .5 m, the length of dislocation is 2～3m; bench excavation footage is not more than 0.6～1.2m.(4) Research results can be used to cross the debris flow body formation and similar types of loose strata tunnel project.
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Received: 08 July 2013
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[1]魏秀丽.大管棚整治隧道泥石流技术[J].铁道建筑技术，2009 (5) :28-30.
Wei Xiuli. Application of Shed for Mud-Rock Flow Treatment in Tunnel [J].Railway Construction Technology, 2009 (5) :28-30.
[2]沈军辉，李永林，王小群，等.二郎山公路隧道泥石流地质灾害及防治[J].中国地质灾害与防治学报，2005(2):58-62.
Shen Junhui，Li Yonglin, Wang Xiaoqun, etc. The Debris Flow Hazards of the Tunnel in Erlang Mountain and Its Prevention [J].The Chinese Journal of Geological Hazard and Control, 2005 (2) :58-62.
[3]张梅，张民庆，黄鸿健，等.龙厦铁路象山隧道岩溶区段施工技术研究[J].铁道工程学报，2011(9):75-82.
Zhang Mei, Zhang Minqing, Huang Hongjian, etc. Research on Construction Technology in Karst Area of Xiangshan Tunnel of Longyan-Xiamen Railway [J}. Journal of Railway Engineering Society, 2011 (9) :75- 82.
[4]陈洪凯，马康，马永泰，等.公路泥石流防治工程施工指南(Ⅰ) [J].重庆交通学院学报，2006 (4) :26-29
Chen Hongkai, Ma Kang, Ma Yongtai, etc. Construction Guidbook of Civil Engineering Against Debris Flow along Highway(I)[J].Journal of Chongqing Jiaotong University, 2006 (4) :26-29.
[5]陈洪凯，唐红梅，吴四飞.公路特大型泥石流灾害控制技术研究田公路，2004 ( 3 ) :1-5.
Chen Hongkai, Tang Hongmei, Wu Sifei. Research on Countermeasures for Giant Debris Flow Disaster Along Highways[J].Highway, 2004 (3) :1-5.
[6]唐红梅，陈洪凯.公路特大型泥石流治理综合模式及应用[J].重庆交通学院学报，2005 (6) :112-115.
Tang Hongmei, Chen Hongkai. Research on General Control Models of Giant Debris Flow along Highway and Application [J].Journal of Chongqing Jiaotong University, 2005 (6) :112-115.
[7]齐甦，何金星，王立英，等.兰渝铁路杨家坝隧道穿越泥石流沟施工技术田施工技术，2012 (6) :91-95.
Qi Su, He Jinxing, Wang Liying, etc. Construction Technology of Debris Flow Gully in Yangjiaba Tunnel on Lanzhou-Chongqing Railroad [J].Construction Technology, 2012 (6) :91-95.
[8]陈洪凯，唐红梅，鲜学福关姑河流域牛牛坝公路泥石流灾害防治[J].兰州大学学报(自然科学版)，2009 (3):18-23
Chen Hongkai, Tang Hongmei, Xian Xuefu. Hazard Control for Niuniuba Debris Flow along the High Way in Meigu River Basin [J].Journal of Lanzhou University (Natural Seiences) ,2009 (3) :18-23.
[9]王林峰，唐红梅，陈洪凯泥石流隧道结构计算原理 [J].重庆交通大学学报(自然科学版)，2008 ( 3 ) 387-391.
Wang Linfeng, Tang Hongmei, Chen Hongkai. Calculating Principle of Tunnel in Debris Flow’s Structure[J].Journal of Chongqing Jiaotong University (Natural Seience)，2008 ( 3 ) : 387-391.
[10]侯敏.浅埋隧道穿越泥石流沟关键技术[J].山西建筑， 2012 (21): 181-182
Hou Min. The Key Technology of Shallow Buried Tunnel through the Debris Flow Gully [J].Shanxi Architecture, 2012 (21) :181-182.
[11]徐林荣，王磊，苏志满.隧道工程遭受泥石流灾害的工程 易损性评价[J].岩土力学，2010 (7) :2153-2158
Xu Linrong, Wang Lei, Su Zhiman. Assessment of Engineering Vulnerability of Tunnel Suffering from Debris Flow[J].Rock and Soil Mechanics, 2010 ( 7 ): 2153-2158.
[12]陈野鹰，石晋旭，唐红梅，等.天山公路地质灾害防治 及应用研究[J].公路，2007 (2) :38 -42.
Chen Yeying, Shi Jinxu, Tang Hongmei, etc. Research on Pervention and Application of Geological Disaster in Tianshan Highway[J].Highway, 2007 (2) :38-42.
[13]陈洪凯，唐红梅，叶四桥中国公路泥石流研究[J].中 国地质灾害与防治学报，2008 (1) :1 – 5.
Chen Hongkai, Tang Hongmei, Ye Siqiao. Study on Debris Flows along Highways in China[J].The Chinese Journal of Geological Hazard and Control, 2008(1): 1-5.
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2013, Vol. 30 
