物探技术在越岭隧道选线中所发挥的作用
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摘要
研究目的:铁路越岭段工程艰巨,且直接影响线路走向、工程投资和施工安全等重大问题,往往有多个方案进行比选。越岭段线路高程大、隧道埋深大、地形地质条件复杂,仅靠大面积区域地质调绘和钻探等地质手段很难查清方案地质问题。如何科学地、合理地发挥物探技术在铁路越岭隧道选线中的作用是我们铁路勘探者一直在思考的问题,本文以集通线越岭段勘探为例,研究物探技术在铁路隧道选线所发挥的作用。研究结论:物探技术能够查明隧道断层等不良地质构造、岩性分界、地下水发育情况,为隧道围岩分级提供依据;科学指导钻孔布设并大量减少钻探数量;大大地降低勘测成本,缩短勘测周期,提高勘测质量。物探技术在铁路越岭隧道选线中作用凸显。
Research purposes: The construction of railway watershed tunnel is a tough work with several schemes for selection and it is crucial to the railway alignment,construction investment and construction security.As in the watershed section,the track elevation is high,the tunnel is deep buried and the topographical and geological conditions are complicated,only adoption of the regional mapping and boring in large area is difficult to clearly know the geological conditions.How to scientifically and seasonably bring the geophysical prospecting into play in the route selection of railway watershed tunnel is the question facing to the railway prospector.Taking the geological prospecting for the watershed tunnel of Jining-Tonghua Railway as an example,this paper studies the role of geophysical prospecting in the route selection of railway tunnel. Research conclusions:By using the geophysical prospecting,the unfavorable geological structure of fault,the lithologic delimitation and the development of underground water can be clearly found out and it can provide the basis for grading the surrounding rock of the tunnel.The scientific arrangement of boring and reduction of boring quantities can much cut the prospecting cost,shorten the prospecting period and enhance the survey quality.So the geophysical prospecting can play great role in the route selection of the watershed tunnel.
Research purposes: The construction of railway watershed tunnel is a tough work with several schemes for selection and it is crucial to the railway alignment,construction investment and construction security.As in the watershed section,the track elevation is high,the tunnel is deep buried and the topographical and geological conditions are complicated,only adoption of the regional mapping and boring in large area is difficult to clearly know the geological conditions.How to scientifically and seasonably bring the geophysical prospecting into play in the route selection of railway watershed tunnel is the question facing to the railway prospector.Taking the geological prospecting for the watershed tunnel of Jining-Tonghua Railway as an example,this paper studies the role of geophysical prospecting in the route selection of railway tunnel. Research conclusions:By using the geophysical prospecting,the unfavorable geological structure of fault,the lithologic delimitation and the development of underground water can be clearly found out and it can provide the basis for grading the surrounding rock of the tunnel.The scientific arrangement of boring and reduction of boring quantities can much cut the prospecting cost,shorten the prospecting period and enhance the survey quality.So the geophysical prospecting can play great role in the route selection of the watershed tunnel.
引文
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[2]李志华,朱旭东.复杂地质隧道的综合物探技术[J].铁道工程学报,2008(8):58-61.Li Zhihua,Zhu Xudong.The Application of IntegratedGeophysical Exploration Technology in the TunnelUnder the Complicated Geological Conditions[J].Journal of Railway Engineering Society,2008(8):58-61.
[3]郝明,董晨.牡绥线初测综合物探[J].铁道勘察,2008(6):67-71.Hao Ming,Dong Chen.Integrated GeophysicalProspecting for Preliminary Surveying of Mudanjiang-Suifenhe Railway[J].Railway Investigation andSurveying,2008(6):67-71.
[4]李志华.路基稳定性无损检测方法技术研究[J].铁道工程学报,2007(2):28-31.Li Zhihua.Research on the Method of SubgradeStability None-damaged Testing[J].Journal ofRailway Engineering Society,2007(2):28-31.
[5]周海滨,李志华.困难地形条件下地震反射在煤矿采空区的技术研究[J].铁道工程学报,2010(2):18-21.Zhou Haibin,Li Zhihua,Technical Research on theSeismic Reflection in Coal Seam Gob under DifficultTerrain Condition[J].Journal of Railway EngineeringSociety,2010(2):18-21.
[6]郝明,李玮,郭志强.采用物探技术进行路基挡土墙质量检测的研究与应用[J].地球物理学进展,2003(3):440-444.Hao Ming,Li Wei,Guo Zhiqiang.Physical ProspectingUsed to Test the Quality of Retaining Walls in RoadebedProject[J].Progress in Geophysics,2003(3):440-444.
[7]董晨,郝明.一种简便的反演数据连接方法[J].工程地球物理学报,2009(S1):159-161.Dong Chen,Hao Ming.A Simple Method of InversionData Linking[J].Chinese Journal of EngineeringGeophysics,2009(S1):159-161.
[8]郝明,许广春,郭志强.高寒区铁路工程物探作业的研究与实践[J].铁道工程学报,2010(10):15-19.Hao Ming,Xu Guangchun,Guo Zhiqiang.Researchand Practice of Railway Geophysical Exploration inCold area[J].Journal of Railway Engineering Society,2010(10):15-19.
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