综合超前地质灾害预报方法在椿树垭隧道中的应用
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摘要
由于地质条件的复杂性,隧道工程在开挖过程中面临着断层、溶洞、涌水、涌泥等各种地质灾害。隧道超前地质预报能够探测隧道前方不良地质条件,优化隧道开挖和支护设计方案,确保工程安全快速施工。但目前各种预报方法都有其不足之处。单一预报方法预报精度较低,不能保证安全施工要求。隧道综合超前预报方法能发挥多种预报手段的优点,提高预报精度,当预报方法与地质条件相适应时更是如此。结合椿树垭隧道工程实际,采用工程地质调查分析、TSP、GPR等手段进行综合超前地质预报,并通过与开挖情况对比,分析综合超前地质预报系统的合理性,同时提出改进意见,为相关工程提供借鉴。
As the complexity of the geological conditions,various geological disasters such as fault,rock burst,karst caves and so on in the tunnel excavating will be faced.Tunnel geological prediction can explore the geological disasters in advance and then optimize the excavation and the scheme so as to ensure the construction safe and efficient.However,all the prediction methods have their disadvantages,for the accuracy of a single method is low,which can't meet the requirements of safe construction.However,tunnel comprehensive geological prediction can make good use of the advantages of multiple methods to improve the accuracy,especially when the methods go with the geological conditions.Taking the Chunshuya Tunnel as an example,this paper makes a comprehensive geological prediction using geological engineering survey,TSP,GPR and other methods.By comparing the excavating condition,it analyzes the comprehensive geological prediction method.Meanwhile,it puts forward some suggestions.
As the complexity of the geological conditions,various geological disasters such as fault,rock burst,karst caves and so on in the tunnel excavating will be faced.Tunnel geological prediction can explore the geological disasters in advance and then optimize the excavation and the scheme so as to ensure the construction safe and efficient.However,all the prediction methods have their disadvantages,for the accuracy of a single method is low,which can't meet the requirements of safe construction.However,tunnel comprehensive geological prediction can make good use of the advantages of multiple methods to improve the accuracy,especially when the methods go with the geological conditions.Taking the Chunshuya Tunnel as an example,this paper makes a comprehensive geological prediction using geological engineering survey,TSP,GPR and other methods.By comparing the excavating condition,it analyzes the comprehensive geological prediction method.Meanwhile,it puts forward some suggestions.
引文
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[2]孙克国,李术才,张庆松,等.TSP在岩溶区山岭隧道预报中的应用研究[J].山东大学学报(工学版),2008,39(4):7~11.
[3]张庆松,许振浩,李术才,等.岩溶隧道综合超前地质预报方法与工程应用[J].山东大学学报(工学版),2008,4(4):766~771.
[4]刘志刚,赵勇.隧道施工地质技术[M].北京:中国铁道出版社,2001.189~190.
[5]白哲.地质雷达在隧道超前预报中的应用[D].武汉:武汉理工大学,2006.
[6]陈建峰.隧道施工地质超前预报技术比较[J].地下空间,2003,23(1):5~16.
[7]冯永,李永鸿,杜文哲.TSP在隧道超前地质预报的应用研究[J].西北地震学报,2006,28(4):348~351.
[8]王保,李桂林,张立国,等.超前地质预测预报在隧道中的应用[J].铁道标准设计,2007(增刊1):220~222.
[9]薛翊国,李术才,张庆松,等.TSP203超前地质预报系统探测岩溶隧道的应用研究[J].地下空间与工程学报,2007,3(7):1187~1191.
[10]吕乔森,罗学东,任浩.综合超前地质预报技术在穿河隧道中的应用[J].隧道建设,2009,29(2):189~293.
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