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连城山隧道

连城山隧道
概览
地点 中国陕西省汉中市
经纬度33°14′12″N 106°56′29″E / 33.2368°N 106.9414°E / 33.2368; 106.9414
状况使用中
道路G85 坪汉高速
起点汉台区河东店镇麻坪寺村
终点勉县褒城镇堡子沟村
运营数据
动工于2014年7月
贯通于2017年9月28日
启用于2017年12月28日
業主陕西交通控股集团
施工单位中交第四公路工程局
中交二公局第三工程有限公司
运营单位陕西交通控股集团宝川分公司
通行类别高速公路
收费
技术数据
长度左线:5779米
右线:5798米
车道双向六车道
运营速度80公里/小时
限界高度5米
限界宽度14米
坡度0.5%

连城山隧道,原名“牛头山隧道”,位于中华人民共和国陕西省汉中市境内,是中国国家高速公路网纵向主线 G85 银昆高速坪坎至汉中段的控制性工程“两隧一桥”之一,设计为双向六车道分离式公路隧道,单洞总长11577米(左线长5779米,右线长5798米)。围岩绿泥石云母片岩,含少量方解石、云母及滑石成分,岩石呈片状构造,属高地应力软弱大变形围岩条件下的特长隧道[1]。于2017年9月28日双幅贯通[2],12月28日随坪汉高速建成通车[3]

工程规模

隧道采用双向六车道分离式设计,单洞总长11.577公里,其中左线长5.779公里,右线长5.798公里,属特长隧道,隧道净宽14米、净高5米,最大开挖宽度19.6米。设置1座通风斜井,长度811米,净宽4米,净高5.2米,纵坡-13%[4]。分为PH15、PH16两个标段建设:

  • PH15标段:起讫桩号K191+798~K194+800,全长3002米[5],起点接石门隧道出口,包括石门大桥1座及连城山隧道0.5座[6]。由中交第四公路工程局有限公司承建[7]
  • PH16标段:起讫桩号K194+800~K199+855.46,全长5055.5米,包括连城山隧道0.5座(包含3号斜井及便道),石门服务区1处,桥梁6座730.4米,天桥1座[5]。由中交二公局第三工程有限公司承建隧道左洞3120米、右洞3152米。2014年10月开工,2017年6月贯通[1]

建设历程

2013年12月20日,陕西宝汉高速公路建设管理有限公司发布《宝汉高速公路坪坎至汉中(石门)段路基桥隧施工及监理服务招标资格预审公告》,其中PH15、PH16标段涉及连城山隧道[5]

2014年6月25日,中交二公局第三工程有限公司中标PH16标段[8]。7月,隧道开工建设;8月开始进洞双向掘进[2];10月开始斜井掘进[9];10月27日,中交第四公路工程局有限公司中标PH15标段[7]。12月24日,宝汉高速坪坎至汉中段施工图设计获得陕西省交通运输厅以陕交函〔2014〕1057号文件批复[10]

由于隧道出口至斜井段为软弱大变形围岩,虽然施工前期采取了多种施工方案及措施,但仍未能有效地控制隧道的有害变形。2016年11月19日,建设方邀请专家召开了“连城山隧道极软岩大变形段设计施工技术方案咨询会”,对施工技术方案进行会诊。11月26日,成立了驻连城山隧道现场指挥部。2017年5月14日,专家技术方案论证会召开,对试验段的施工方案及支护参数给予肯定,并对隧道前期出现病害处理给出建议方案[4]

2017年5月21日,隧道左洞6#-8#掌子面贯通;6月26日,右洞5#-7#掌子面贯通;8月10日,右洞1#-3#掌子面贯通,至此,右洞全线贯通;9月28日,左洞2#-4#掌子面贯通,至此,隧道双幅全面贯通[11]

参考文献

  1. ^ 1.0 1.1 宝汉高速连城山隧道. 中交二公局第三工程有限公司. 2018-04-21 [2023-03-26]. (原始内容存档于2019-05-28). 
  2. ^ 2.0 2.1 马虎振、杜延军. 喜讯!陕西汉坪高速连城山特长隧道实现贯通. 华商报. 2017-09-29 [2023-03-26]. (原始内容存档于2023-03-26). 
  3. ^ 刘望. 宝汉高速坪坎至汉中段通车. 西部网. 2017-12-28 [2018-01-20]. (原始内容存档于2018-06-19). 
  4. ^ 4.0 4.1 杜延军. 攻坚连城. 陕西交通报. 2017-09-12 [2023-03-26]. (原始内容存档于2023-03-26). 
  5. ^ 5.0 5.1 5.2 宝汉高速公路坪坎至汉中(石门)段路基桥隧施工及监理服务招标资格预审公告. 陕西省交通运输厅. 2013-12-20 [2023-03-26]. (原始内容存档于2023-03-26). 
  6. ^ 宝汉高速公路坪坎至汉中(石门)段PH-15标. 中交四公局第五工程有限公司. 2022-02-23 [2023-03-26]. (原始内容存档于2023-03-26). 
  7. ^ 7.0 7.1 宝汉高速公路坪坎至汉中(石门)段路基桥隧工程PH-15标段施工招标中标单位及施工投标信用加分情况公示. 陕西省交通运输厅. 2014-10-27 [2023-03-26]. (原始内容存档于2023-03-26). 
  8. ^ 宝汉高速公路坪坎至汉中(石门)段路基桥隧工程施工及施工监理招标中标单位及施工投标信用加分情况公示. 陕西省交通运输厅. 2014-06-25 [2023-03-26]. (原始内容存档于2023-03-26). 
  9. ^ 汉坪高速公路项目连城山特长隧道右幅顺利贯通. 陕西省人民政府国有资产监督管理委员会. 2017-08-16 [2023-03-26]. 
  10. ^ 关于宝鸡至汉中高速公路坪坎至汉中段施工图设计的批复. 陕西省交通运输厅. 2014-12-26 [2023-03-26]. (原始内容存档于2023-03-26). 
  11. ^ 陕西:汉坪高速连城山特长隧道实现贯通. 央广网. 2017-09-29 [2023-03-26]. (原始内容存档于2023-03-26). 

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