甘塔斯隧道膨胀岩刚性支护设计与施工
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摘要
详细讨论了阿尔及利亚甘塔斯隧道膨胀岩支护设计与施工所遇到的主要问题,指出初支设计应基于对实际地质情况的真正认识。施工过程发现,及早封闭仰拱、隔离围岩与空气的接触是减少膨胀性的有效措施;多层刚性支护是限制围岩膨胀性、简化施工、提高进度的较好支护形式。
Main difficulties and problems encountered in the design of the primary supports for and construction of the Ganntas Tunnel in the swelling rock stratum in Algeria are talked about in detail in the paper,with an important point of view dealt with that the primary supports should be based on the real understanding of the true geological conditions.In the course of construction,to find the swelling rock,to perform the early closure of the inverted arch and to prevent the surrounding rock from contacting the air are effective measures to keep the surrounding rock from swelling.And the multi-course rigid supports are good supporting forms to counter swelling,simplify construction and accelerate the progress.
Main difficulties and problems encountered in the design of the primary supports for and construction of the Ganntas Tunnel in the swelling rock stratum in Algeria are talked about in detail in the paper,with an important point of view dealt with that the primary supports should be based on the real understanding of the true geological conditions.In the course of construction,to find the swelling rock,to perform the early closure of the inverted arch and to prevent the surrounding rock from contacting the air are effective measures to keep the surrounding rock from swelling.And the multi-course rigid supports are good supporting forms to counter swelling,simplify construction and accelerate the progress.
引文
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[2]曹峰,范春林.综合地质勘察方法在甘塔斯隧道的应用实例[J].铁道工程学报,2011(8):31-37
[3]张永平.安康膨胀土隧道的设计和施工[J].铁道工程学报,2013,30(10):77-80
[4]黄建华.膨胀岩的特性以及对隧道稳定性的影响[J].铁道工程学报,2004(1):56-57
[5]史彦文,丁小军,韩常领.极软岩隧道沉降变形的控制措施[J].中外公路,2009,29(4):397-400
[6]温利强.软弱围岩大跨隧道施工技术[J].山西建筑,2009,35(13):298-299
[7]莫勋涛.阿尔及利亚甘塔斯隧道FGP支护类型计算报告[R].石家庄:石家庄铁道大学,2014
[8]黄强.中强膨胀性围岩隧道施工技术[J].公路隧道,2013,39(1):52-54
[9]中华人民共和国铁道部.TB10204—2002铁路隧道施工规范[S].北京:中国铁道出版社,2002