综合勘察与超前地质预报技术在兰渝铁路长寿山隧道中的应用研究

长寿山隧道为特长隧道,其工程规模大,埋深大,需勘察范围广,地形地质条件十分复杂,为了详细查清隧道的工程地质与水文地质条件,并及时对地质勘察资料进行补充和完善,指导并保证隧道施工的安全顺利进行,通过在勘察阶段采用遥感、大面积地质调绘、物探、钻探、综合试验、测试相结合的地质综合勘察技术,在施工阶段,采用地质编录、TSP、地质雷达、红外探测、超前水平钻探等相结合的综合地质超前预报技术,提高勘察效率及质量,补充地质资料、指导及保证安全施工,取得很好的效果。实践证明,山区长大、深埋、地形地质复杂隧道,在勘察及施工阶段分别采用综合勘察与地质超前预报技术,其方法是必要、合理、恰当的。

Application of Comprehensive Survey and Advanced Geological Prediction in Changshoushan Tunnel

Changshoushan tunnel is a extra-long tunnel,characterized by large project scale,great buried depth,wide range of survey,complex topographic and geologic conditions. In order to identify the detailed engineering geological and hydrogeological conditions of the tunnel,and supplement and improve information about geological survey in a bid to guide and ensure the safety of the tunnel construction,applied are such integrated geological survey techniques as remote sensing,large area geological survey mapping,geophysical drilling,comprehensive test. During the construction phase,the geological record,TSP,radar,infrared detection,advanced horizontal drilling and other relative comprehensive geological prediction technologies are used to improve the efficiency and quality of the survey,supplement geological information,guide and guarantee the safety of the construction,and good results are achieved. Practice has proved that it is necessary,reasonable and appropriate to use comprehensive survey and advanced geological prediction technologies respectively during the survey and construction phases for extra-long tunnels in mountain area with great buried depth,complex topographic and geological conditions,.